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Littérature scientifique sur le sujet « Biodiversity level »

Auteur : Grafiati
Publié le 9 mars 2023
Mis à jour le 10 mars 2023

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Articles de revues sur le sujet "Biodiversity level"

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Lindenmayer, David B. « Continental-level biodiversity collapse ». Proceedings of the National Academy of Sciences 112, no 15 (6 avril 2015) : 4514–15. http://dx.doi.org/10.1073/pnas.1502766112.

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Debusk, George H., W. H. Martin, S. G. Boyce et A. C. Echternacht. « A Community-Level View of Biodiversity ». Biodiversity Letters 1, no 5 (septembre 1993) : 158. http://dx.doi.org/10.2307/2999690.

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Husin, Norhayati Mat, Azrinawati Mohd Remali et Bakhtiar Alrazi. « Biodiversity Reporting Among Malaysian Companies : does the Risk Level Matter ? » International Journal of Engineering & ; Technology 7, no 4.35 (30 novembre 2018) : 198. http://dx.doi.org/10.14419/ijet.v7i4.35.22731.

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As Malaysia launched its National Key Economic Areas, biodiversity has been identified as one of the entry point projects for one of the sectors that will drive Malaysia towards high-income status i.e. tourism. Biodiversity, however, is facing a crisis, due to the development of business operation that has direct or indirect contribution to biodiversity loss. Despite the growing concern on biodiversity issue, previous studies have put more focus on general sustainability or environmental reporting issues. This paper aims to provide an analysis on the extent of biodiversity information disclosed by the top 100 Malaysian public listed companies and to see whether there is significant difference, in terms of reporting, between companies from different categories of biodiversity risk. The findings show 80 of the Malaysian companies disclose information regarding biodiversity with ‘mission statement’ being the highest reported biodiversity related item. There is also significant difference, in the context of biodiversity reporting, between companies from different categories of biodiversity risk. Further analysis shows companies with higher biodiversity risk (red-zone) provide more reports on biodiversity related information leading to a statistically significant difference from companies with lower biodiversity risk i.e. amber-zone and green-zone.
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Kiley, Heather M., Gillian B. Ainsworth et Michael A. Weston. « Modest levels of interpretability of the term ‘biodiversity’, mediated by educational level, among the Australian public ». Pacific Conservation Biology 25, no 2 (2019) : 208. http://dx.doi.org/10.1071/pc18056.

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Effective worldwide efforts to conserve flora and fauna rely on engaging the public, and thus on public appreciation of the object of conservation activities (most commonly, ‘biodiversity’). We examined alignment of interpretation of the term ‘biodiversity’ with generally accepted definitions in a representative sample (n=499) of the public from the State of Victoria in Australia, a country with an explicit biodiversity conservation strategy (which defines the term) and the capacity to invest heavily in conservation. However, almost half of respondents did not know what ‘biodiversity’ meant, 32% and 18% expressed an ecological and conceptual interpretation, respectively. The probability of having at least some interpretation of the term was higher among university-educated respondents, but otherwise did not vary with sex or income. Broadening the base of conservation efforts would likely be facilitated by better aligning interpretations of the term ‘biodiversity’ among the public or by adopting more intuitive language when engaging with the public.
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Talwar, Neetika, et Jatinder Kishtwaria. « Preservation of Biodiversity-Efforts at Household Level ». Journal of Human Ecology 17, no 2 (février 2005) : 149–51. http://dx.doi.org/10.1080/09709274.2005.11905770.

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Legra, Leo, Xingong Li et A. Townsend Peterson. « Biodiversity consequences of sea level rise in New Guinea ». Pacific Conservation Biology 14, no 3 (2008) : 191. http://dx.doi.org/10.1071/pc080191.

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Climate change poses a growing threat to biodiversity globally. Under changing conditions, affected species must either shift spatially to track changing conditions, adapt in terms of ecological tolerances, or become extinct. Currently, most climate change studies focus on direct climate effects on biodiversity and little attention is paid to the effects of sea level rise. We explore two scenarios of sea level rise (1 m and 6 m) and their implications for biodiversity across a major biodiversity hotspot, New Guinea. Marine intrusion at just 1 m of sea level rise is widespread, affecting large sectors of New Guinea. Protected areas (0?58.3% loss), ecoregions (0?90.0% loss) and endemic species (e.g., Pitohui incertus, 41?50% loss) across New Guinea would be affected by sea level rise within the projected range of likely occurrence.
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F. Recher, Harry. « National Biodiversity Council ». Pacific Conservation Biology 4, no 1 (1998) : 3. http://dx.doi.org/10.1071/pc980003.

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The NBC continues to increase its level of activity. Since the last report in Pacific Conservation Biology, among other actions, the Council has commented on the Commonwealth Governments "Native Title" legislation the "10 Point Plan" and made submissions on the proposed changes to Commonwealth Environment Legislation. Pierre Horwitz made a submission on behalf of the Council concerning the Western Australian Regional Forest Agreement process. Each submission received a high level of media attention with national coverage on the ABC for the Council's views on native title and on proposed new biodiversity legislation.
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FERRIER, SIMON, et ANTOINE GUISAN. « Spatial modelling of biodiversity at the community level ». Journal of Applied Ecology 43, no 3 (juin 2006) : 393–404. http://dx.doi.org/10.1111/j.1365-2664.2006.01149.x.

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Kallimanis, Athanasios S., Antonios D. Mazaris, Dimitrios Tsakanikas, Panayotis Dimopoulos, John D. Pantis et Stefanos P. Sgardelis. « Efficient biodiversity monitoring : Which taxonomic level to study ? » Ecological Indicators 15, no 1 (avril 2012) : 100–104. http://dx.doi.org/10.1016/j.ecolind.2011.09.024.

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Gotelli, Nicholas J., Hideyasu Shimadzu, Maria Dornelas, Brian McGill, Faye Moyes et Anne E. Magurran. « Community-level regulation of temporal trends in biodiversity ». Science Advances 3, no 7 (juillet 2017) : e1700315. http://dx.doi.org/10.1126/sciadv.1700315.

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Thèses sur le sujet "Biodiversity level"

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Karunarathna, Kolombugamage Muditha Rathnamala. « Agricultural biodiversity, farm level technical efficiency and conservation benefits : an empirical investigation ». Thesis, Queensland University of Technology, 2012. https://eprints.qut.edu.au/57990/1/Kolombugamage_Karunarathna_Thesis.pdf.

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The issues involved in agricultural biodiversity are important and interesting areas for the application of economic theory. However, very little theoretical and empirical work has been undertaken to understand the benefits of conserving agricultural biodiversity. Accordingly, the main objectives of this PhD thesis are to: (1) Investigate farmers’ valuation of agricultural biodiversity; (2) Identify factors influencing farmers’ demand for agricultural biodiversity; (3) Examine farmers’ demand for biodiversity rich farming systems; (4) Investigate the relationship between agricultural biodiversity and farm level technical efficiency. This PhD thesis investigates these issues by using primary data in small-scale farms, along with secondary data from Sri Lanka. The overall findings of the thesis can be summarized as follows. Firstly, owing to educational and poverty issues of those being interviewed, some policy makers in developed countries question whether non-market valuation techniques such as Choice Experiment (CE) can be applied to developing countries such as Sri Lanka. The CE study in this thesis indicates that carefully designed and pre-tested nonmarket valuation techniques can be applied in developing countries with a high level of reliability. The CE findings support the priori assumption that small-scale farms and their multiple attributes contribute positively and significantly to the utility of farm families in Sri Lanka. Farmers have strong positive attitudes towards increasing agricultural biodiversity in rural areas. This suggests that these attitudes can be the basis on which appropriate policies can be introduced to improve agricultural biodiversity. Secondly, the thesis identifies the factors which influence farmers’ demand for agricultural biodiversity and farmers’ demands on biodiversity rich farming systems. As such they provide important tools for the implementation of policies designed to avoid the loss agricultural biodiversity which is shown to be a major impediment to agricultural growth and sustainable development in a number of developing countries. The results illustrate that certain key household, market and other characteristics (such as agricultural subsidies, percentage of investment of owned money and farm size) are the major determinants of demand for agricultural biodiversity on small-scale farms. The significant household characteristics that determine crop and livestock diversity include household member participation on the farm, off-farm income, shared labour, market price fluctuations and household wealth. Furthermore, it is shown that all the included market characteristics as well as agricultural subsidies are also important determinants of agricultural biodiversity. Thirdly, it is found that when the efficiency of agricultural production is measured in practice, the role of agricultural biodiversity has rarely been investigated in the literature. The results in the final section of the thesis show that crop diversity, livestock diversity and mix farming system are positively related to farm level technical efficiency. In addition to these variables education level, number of separate plots, agricultural extension service, credit access, membership of farm organization and land ownerships are significant and direct policy relevant variables in the inefficiency model. The results of the study therefore have important policy implications for conserving agricultural biodiversity in Sri Lanka.
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Charlier, Johan. « Monitoring gene level biodiversity - aspects and considerations in the context of conservation ». Doctoral thesis, Stockholms universitet, Zoologiska institutionen, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-62796.

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The objectives of this thesis relate to questions needed to be addressed in the context of genetic monitoring for implementing the Convention on Biological Diversity for the gene level. Genetic monitoring is quantifying temporal changes in population genetic metrics. Specific goals of this thesis include i) synthesizing existing information relevant to genetic monitoring of Swedish species, ii) providing a genetic baseline for the Swedish moose, iii) evaluating the relative performance of nuclear versus organelle genetic markers for detecting population divergence, iv) actually monitoring the genetic composition, structure, level of variation, and effective population size (Ne) and assessing the relation between Ne and the actual number of individuals for an unexploited brown trout population. The concept of conservation genetic monitoring is defined and Swedish priority species for such monitoring are identified; they include highly exploited organisms such as moose, salmonid fishes, Norway spruce, Atlantic cod, and Atlantic herring. Results indicate that the Swedish moose might be more genetically divergent than previously anticipated and appears to be divided into at least three different subpopulations, representing a southern, a central, and a northern population. The relative efficiency of nuclear and organelle markers depends on the relationship between the degree of genetic differentiation at the two types of markers. In turn, this relates to how far the divergence process has progressed. For the monitored brown trout population no indication of systematic change of population structure or allele frequencies was observed over 30 years. Significant genetic drift was found, though, translating into an overall Ne-estimate of ~75. The actual number of adult fish (NC) was assessed as ~600, corresponding to an Ne/NC ratio of 0.13. In spite of the relatively small effective population size monitoring did not reveal loss of genetic variation.
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Guthrie, Gené. « Impacts of the invasive reed Arundo donax on biodiversity at the community-ecosystem level ». Thesis, University of the Western Cape, 2007. http://hdl.handle.net/11394/2313.

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Magister Scientiae - MSc (Biodiversity and Conservation Biology)
Arundo donax is an invasive species that mostly impacts on sensitive riparian ecosystems. Arundo is also invasive in South Africa, though less is known about its ecology, biology, and impacts. Since California and the Western Cape of South AFrica have similar Mediterranean-type climates, we could assume that the impacts of Arundo on ecosystems in California are likely to be similar in the Western Cape, and that control methods used could be extrapolated for use in South Africa. This thesis attempted to determine what impact Arundo has on biodiversity at the community-ecosystem level.
South Africa
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Supp, Sarah R. « Local and Regional Drivers of Biodiversity : From Life-History Traits to System-Level Properties ». DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1503.

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Biodiversity research aims to understand and predict the occurrence, abundance, and distribution of species and the diversity of species traits, body sizes, and functional roles in a community. Ecologists lack a comprehensive understanding of the interplay between processes driving biodiversity at differing spatiotemporal scales, hindering the ability to predict response to change. A crucial challenge facing ecologists is to incorporate knowledge of the regional dynamics and temporal stability of communities in biodiversity research. This dissertation investigates the role that species traits and system-level properties play in determining biodiversity at local sites and evaluates biodiversity response to change. Local and regional processes may regulate biodiversity via their different influences on core (common, temporally persistent) and transient (rare, temporally intermittent) species. In Chapter 2, we tested the hypothesis that core vs. transient species have fundamentally different life-history traits that are associated with survival strategies targeted at local vs. regional habitat use. Using long-term mark-recapture data from a rodent community, we found that core species generally had high ecological specialization, high survival, low dispersal rates, and low reproductive effort compared to transient species. Life-history trade-offs may correspond to differing roles in maintaining species richness and responses to environmental change. Macroecology describes patterns of biodiversity in communities without respect to species identities or traits. Diversity patterns (i.e., species-abundance distribution-SAD, species-area relationship-SAR, species-time relationship-STR) are well-studied, but drivers of these patterns are poorly understood. In Chapter 3, we tested the hypothesis that local-scale interactions influence the form of SADs, SARs, and STRs using long-term data from annual plant communities. Our results suggest that patterns are directly influenced by system-level properties (species richness, total abundance) and respond indirectly to local-scale processes. In Chapter 4, we analyzed data from a global-span database and found the SAD and species richness generally resilient to environmental change. This work suggests that local processes are important determinants of species composition and abundance and may set an upper limit to species richness, but that regional processes are responsible for maintaining richness and community structure. This insight may partially explain why many biodiversity metrics are often invariant under environmental change scenarios.
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Eriksson, Björn. « Biodiversity at the ecosystem level : structural variation among food webs in temperate and tropical areas ». Thesis, Linköpings universitet, Biologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108120.

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Biodiversity is a fundamental part of the functioning of ecosystems and their ability to provide ecosystem services. It has been shown that a high biodiversity increases the robustness of an ecosystem according to the insurance hypothesis. I propose that a similar effect can be seen on a higher scale, where a high diversity of ecosystem types might stabilize the ecological functionality of a region. By comparing eleven network characters in 70 tropical and temperate ecosystems, their diversity was measured as Euclidean distance between the systems in the 11-dimensional room defined by these characters.  The diversity of ecosystems was shown to be significantly higher in tropical latitudes than in temperate. A possible explanation to this result could be that the higher species diversity in the tropics allows for more types of ecosystems. A higher diversity of ecosystems in a region might indicate a larger amount and variation of possible ecosystem goods and services as well as provide the region with an increased robustness. The measurement of ecosystem diversity between regions might also be of importance in a conservation perspective, where unique and vulnerable ecosystems can be discovered and protected.
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Walter, Martina. « Ekosystemansatsen : på nationell och regional nivå ». Thesis, Södertörn University College, School of Life Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-666.

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Att bevarandet av biologisk mångfald är en grundpelare för att nå en hållbar utveckling enades världens länder om i Konventionen om biologisk mångfald (CBD) som upprättades under toppmötet i Rio de Janeiro 1992. I konventionen förespråkas den s.k. ekosystemansatsen (EA), vilket är en strategi som innebär en helhetssyn på ekosystem. Syftet med denna uppsats är att undersöka i vilken grad EA tillämpas på nationell och regional nivå. Frågan är också om EA är en bra utgångspunkt för att upprätthålla biologisk mångfald på landskapsnivå samt vad som kan öka tillämpningen av EA på regional nivå. På nationell nivå analyserades två delar i miljömålspropositionen och på regional nivå analyserades de landskapsstrategier som sju län har fått i uppdrag av regeringen att upprätta i ett pilotprojekt. Min teoretiska utgångspunkt har varit ekosystemansatsen och dess principer och vägledande punkter. Metoden bestod av främst en kvantitativ innehållsanalys med kvalitativa inslag och som komplement utfördes fyra intervjuer.

Resultatet visade att de delar av miljömålspropositionen som analyserades i hög grad följde ekosystemansatsen. En brist i propositionen var dock att det saknades riktlinjer om att det behövdes involvering av olika aktörer när den ursprungliga definitionen av landskapsavsnittet i strategierna skulle bestämmas. Att denna aspekt var implicit ledde troligtvis till det faktum att den även var implicit i landskapsstrategierna. Tillämpningen av EA i landskapsstrategierna skedde, trots att länsstyrelserna endast tillämpade den indirekt, i ganska hög grad och särskilt togs hänsyn till sociala aspekter som involvering av olika aktörer i själva processen och kontakt med vetenskapliga discipliner. Det som däremot var bristfälligt gällde tillämpningen av komplexa aspekter, vilka inte klart hade uttryckts i riktlinjerna till länsstyrelserna från regeringen. Dessa faktorer var beaktande av förvaltning av ekosystem inom ramen för dess funktion, processer i ekosystem samt adaptiv förvaltning. Alla intervjupersoner var överens om att EA är övergripande och ganska luddig, men det måste den vara för att gälla globalt. Av vikt är att konkretisera den på nationell och regional nivå. Ett förslag är att Naturvårdsverket i detta projekt ger tydliga riktlinjer angående tillämpningen av EA i landskapsstrategierna och att det är en tvåvägskommunikation mellan Naturvårdsverket och länsstyrelserna så att det blir en iterativ process. Genom en konkretisering kan tillämpningen av EA öka och därmed ett steg tas mot en hållbar utveckling.


The Convention on Biological Diversity (CBD) promotes the Ecosystem Approach (EA), which is a strategy that endeavours to take a comprehensive approach to managing ecosystems. The aim of this report is to study to what degree the EA is being followed on a national and regional level. A key question of the research is whether EA is conceptually sound and whether it has been operationalised effectively at both national and regional scale. Using articulated EA principles and operational guidelines from the CBD this study analyzed the Government's national environmental directive concerning biodiversity. The same approach was also applied to an analysis of several regional landscape strategies that are being developed as part of a pilot project. The results show that the national biodiversity directive is largely consistent with an EA. Although one area of inadequacy was the level of involvement by different stakeholders in the original decision about defining the landscape area in the pilot studies. This was also a weakness in the landscape strategies- perhaps because communication on this issue was not explicit in the directive from the government.

The implementation of EA in the landscape strategies at the regional level was also found to be good, especially the participation from different stakeholders (especially local stakeholders) in the process and scientific institutions. However inadequate factors not represented in these strategies were complex ecological aspects such as principle 6 (ecosystem must be managed within the limits of their functioning) and operational guideline 1 (focus on the functional relationships and processes within ecosystems). Adaptive management (operational guideline 3), a relatively new approach in Sweden, was also found to be deficient. All the respondents agreed that the EA needed to be made more concrete on a national and regional level. A suggestion from the research to improve the development and adoption of the EA would be to develop iterative mechanisms between regional and national authorities to ensure national guiding principles are informed by more concrete regional experience. When the EA is implemented more effectively we will take one step further on the way to reaching a sustainable development.

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Pert, Petina Lesley, et petina pert@bigpond com. « Biodiversity Conservation at the Bioregional Level : a case study from the Burt Plain Bioregion of Central Australia ». RMIT University. Mathematical and Geospatial Sciences, 2006. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20070209.120654.

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This thesis considers ways to improve biodiversity conservation at the bioregional level in Australia through the use of geospatial science technologies and biological modelling techniques. Following a review of approaches to biodiversity conservation at the bioregional level, including the roles and potential of geospatial science technologies in this regard, I consider biodiversity modelling using a case study of the Burt Plain bioregion in central Australia that focuses on selected taxa, ecosystems and landscapes. The Burt Plain bioregion was chosen since it is one of 19 bioregions nationally that has been given a 'very high' priority status for biological survey, assessment and potential reservation of land for conservation purposes. The specific research objectives for the Burt Plain bioregion study were to: · describe the species composition, distribution and nature of the dominant vegetation communities within the bioregion; · characterise environmental niche of communities with respect to selected environmental and management variables - latitude, longitude, climate, land systems and land units, geology, hydrography, topography, and tenure; · analyse how well or otherwise taxa have been sampled (during previous ground surveys) with respect to geographical and environmental variables; Biodiversity conservation at the bioregional level · develop and compare quantitative habitat models of the potential distribution of selected species based on presence-only distributional data; and · examine the significance of radiometric data as a potential correlate and predictor of the distribution of those selected species. National conservation initiatives such as the bioregional approach and international initiatives such as the biosphere reserves program to support the planning and management of biodiversity conservation are discussed in chapter two. The scientific and related processes underpinning the development of bioregions and strategies across the Australian states and territories are then considered. An important finding arising from this review is the need to improve biological information, especially through systematic surveys and on-going monitoring of ecosystems and populations of species, at the bioregional level to inform land use allocation and management. This finding is consistent with one of the general aims of the thesis to improve the spatial modelling techniques available for bioregional assessment and biodiversity conservation. In chapter three I review the role and limitations of geospatial technologies currently employed for biodiversity conservation management. Current developments and applications of GIS and remote sensing to wildlife research, conservation gap analysis and conservation reserve design are considered. Geographic information systems (GIS) are now routinely used by ecologists to Biodiversity conservation at the bioregional level analyse spatial data. Although various forms of GIS have been available for 15 to 25 years, the biological applications of GIS have figured most prominently in the ecological literature only in the past 15 years. The use of computer-generated models to simulate environmental events can provide a greater understanding of ecosystems, and offers improved predictive powers to conservation and land managers. The decision support offered by computer-based modelling techniques appears likely to underpin conservation and management decisions much more into the future providing that adequate biological and other datasets are available for this purpose. Dominant vegetation communities and various environmental gradients were analysed to characterise environmental niches at the bioregional scale for the Burt Plain bioregion (Chapter 4) and more locally at the catchment scale for the Upper Todd River Catchment (Chapter 5). In Chapters four and five I describe in detail the land tenure and use, land systems, climate soil, geology, topography, hydrology, vegetation and biodiversity of the Burt Plain bioregion and Upper Todd River Catchment. The bioregion contains some ephemeral watercourses, which are generally in fair to good condition, but are afforded little protection from a range of threatening processes, including grazing and trampling by feral animals and livestock and weed infestation. The major river systems occurring in the bioregion include parts of the Plenty, Hanson, Sandover and Lander Rivers. In the Upper Todd River Catchment the major watercourses Biodiversity conservation at the bioregional level are the Todd River and Station Creek, which exit the area via two narrow gaps in the low rocky hills on the southern boundary of the bioregion. The dominant geology can be summarised as plains and low rocky ranges of Pre-Cambrian granites on red earths. The bioregion has approximately 200 - 250 mm of summer rainfall, with rainfall occurring on 20 - 30 days per year. There is a high variability and range of temperatures, with an annual mean temperature of approximately 22-23°C. In Chapter six I consider a range of species found within the Burt Plain bioregion using existing survey data and techniques that enables the prediction of the spatial distribution of taxa. Using GLM and GAM models, Black-footed Rock- Wallaby (Petrogale lateralis), Spinifex Hopping Mouse (Notomys alexis) and Spencers Frog (Limnodynastes spenceri) were chosen for a more in-depth analysis. Environmental variables correlated with the presence of each species are then described and prediction maps showing the probability or likelihood of the presence of the species within the bioregion developed. In Chapter seven I examine the utility of radiometric data for wildlife habitat modelling. Statistical relationships are tested between the concentrations of the elements uranium, thorium and potassium and terrain characteristics such as position in the landscape, slope and aspect as well as other climatic variables. Radiometric data were found to be useful for developing statistical predictive Biodiversity conservation at the bioregional level models of six species: Red Kangaroo (Macropus rufus), Desert Dunnart (Sminthopsis youngsoni), Rabbit (Orcytolagus cuniculus), Brown Honeyeater (Lichmera indistincta), Little Spotted Snake (Suda punctata) and Southern Boobook (Ninox novaeseelandiae). I suggest that the utility of radiometric data for wildlife habitat modelling would appear significant and should be explored further using alternative quantitative modelling techniques and presence/ absence records for target faunal species. Predictions of species distributions may be useful for prioritising land acquisitions for reservation as well as in the future design of biological surveys. The thesis concludes with a synthesis of the major research findings, discussion of the limitations of the datasets available for the study, perspectives on management issues in the Burt Plain bioregion, and possible future research directions. It is important that purposefully-designed biological survey research be undertaken across the bioregions of the arid zone of Australia to enhance basic understanding of biodiversity patterns and their relationships to environmental heterogeneity and site-landscape level processes. Geospatial modelling techniques can assist such biodiversity survey and evaluation and make their conduct more cost-efficient and the inferences drawn from subsequent data analyses more powerful. This knowledge is required to contribute to the emergent concepts and theory of ecosystem dynamics and associated biodiversity patterns in arid Australia and, most significantly, to enhance the conservation and management of the unique biological complement and systems found in this region.
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Bellard, Céline. « Effets des changements climatiques sur la biodiversité ». Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112269/document.

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Nous traversons actuellement une crise de perte de la biodiversité sans précédant. La dégradation des sols et la perte d’habitat, la pollution, la surexploitation et les invasions biologiques contribuent à cette perte mondiale de biodiversité. Par ailleurs, le changement climatique et ses interactions avec les autres menaces, sont probablement l’un des défis majeurs des prochaines décennies pour la biodiversité. À l’heure actuelle, en raison de la multiplication des études et des approches employées, il est difficile d’avoir une vision synthétique des conséquences potentielles de ces changements sur la biodiversité. L’objectif principal de ce travail de thèse a été d’améliorer la caractérisation et la quantification des différents impacts des changements climatiques sur la biodiversité, à l’échelle mondiale par des approches de modélisations et de méta-analyses. Une première partie de mes travaux a ainsi porté sur les conséquences potentielles de la hausse du niveau des mers sur les hotspots insulaires, au cours de laquelle j’ai mis en évidence les conséquences majeures d’une telle hausse pour certains de ces hotspots. Je me suis ensuite intéressée à l’étude des effets conjugués des changements climatiques et des changements d’utilisation des sols sur les invasions biologiques à l’échelle mondiale. Cette partie a permis de mettre en évidence que les conséquences des changements climatiques et des changements d’utilisation des sols sur les espèces invasives dépendent de la région, du taxon et de l’espèce considérée. Ainsi, j’ai mis en évidence que certaines régions pourraient être moins favorables à la présence d’espèce invasives dans le futur. En outre, cette partie a également mis en évidence que les hotspots majoritairement composés d’îles étaient particulièrement favorables à la présence de ces espèces invasives. Finalement, dans une dernière partie, j’ai étudié les conséquences des menaces futures pour les hotspots de biodiversité dans une perspective de conservation. Cette partie a notamment permis d’établir des priorités de recherche et de conservation entre les hotspots de biodiversité en tenant compte des futures menaces qui pèsent sur la biodiversité à l’échelle des hotspots, mais également au sein même des hotspots de biodiversité. Cependant, la mise en œuvre de plans de gestion de sauvegarde d’habitats ou d’espèces ne pourra se faire qu’en intensifiant les collaborations avec l’ensemble des acteurs impliqués. Plus généralement, la mise en œuvre de stratégies d’atténuation et d’adaptation efficaces aux changements climatiques ne pourra pas avoir lieu sans un soutien du grand public
Global biodiversity is changing at an unprecedented rate due to loss of habitat, biological invasions, pollution, overexploitation. Furthermore, climate changes and their synergies with other threats will probably become the main drivers of biodiversity loss in the next century. Nowadays, the multiplicity of approaches and the resulting variability in projections make it difficult to get a clear picture of the future of biodiversity due to climate change. Yet, the majority of models indicate alarming consequences for biodiversity, with the worst- case scenarios leading to an increase of extinction rates. The aim of this thesis was to improve the knowledge about of the different consequences of climate change on biodiversity worldwide. To do that I mainly used modelisation and meta-analyses approaches. The first part of my work was to investigate the consequences of sea level rise for the ten insular biodiversity hotspot and their endemic species, during which I highlighted that between 6 and 19% of the islands would be entirely submerged. Then I studied the effects of climate and land use changes on biological invasions worldwide. The results showed that invasives species response to climate and land use changes depend on region, taxa and species considered. We also emphasized that some regions could lose a significant number of invasive alien species. Besides, we also found that hotspot that are mainly islands or group of islands are highly suitable for invasive species. Finally, in the last part, I quantified the exposure of biodiversity hotspots to the combined effects of climate change, land use change and biological invasions. This work highlighted the pressing need to consider different drivers of global change in conservation planning. In addition, we established some prioritization framework among the hotspot. Finally, conservation strategies to protect habitat and species under global changes, can only be achieved through closed collaboration with park managers. Overall, implementation of effective adaptation strategies to climate change can only succeed with public support
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Hulley, Sarah May. « The food-energy-water-land-biodiversity (FEWLB) nexus through the lens of the local level : an agricultural case study ». Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/19958.

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There is a recognised need to turn the abstract concept of resilience thinking into practical action for resource management. This is often difficult as resource management is complex and multifaceted. Nexus thinking attempts to address this by promoting a framework that integrates and coordinates resource management across many different but interlinked resource pillars and sectors. This research focuses on the local level implementation of the food, energy, water, land and biodiversity (FEWLB) nexus framework, and assesses farmers' understanding and implementation of nexus thinking in relation to the support of the Bergrivier Municipality. Agriculturalists (farmers) have been described as significant custodians of natural resources, as they sit in a key position when it comes to implementing and practising sustainable development. There has been little research into the relationship between farmers and local municipalities, or into the role that local government can play in supporting holistic resource management through agriculture. While there are many different actors contributing towards resource management, this research focuses on the agricultural sector within the municipality. Qualitative research methods, including semi-structured interviews, participant observation and surveys, were used to undertake a case study of the agricultural sector within the Bergrivier Municipality. In a context where local government struggles to find its role in supporting socio-ecological resilience, the FEWLB nexus framework offers an opportunity to implement effective planning and policies that could enable more efficient resource use.
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Bulinski, Katherine V. « Relationship of sample-level properties to biodiversity at multiple scales analyses of Upper Ordovician and Cenozoic ecological and latitudinal gradients / ». Cincinnati, Ohio : University of Cincinnati, 2008. http://rave.ohiolink.edu/etdc/view.cgi?acc_num=ucin1212001254.

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Thesis (Ph.D.)--University of Cincinnati, 2008.
Advisor: Arnold I. Miller. Title from electronic thesis title page (viewed Sep. 4, 2008). Keywords: fossil biodiversity; richness; evenness; Cincinnatian; rarity; ecological gradient; latitudinal diversity gradient. Includes abstract. Includes bibliographical references.
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Livres sur le sujet "Biodiversity level"

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Nagaland, (India) Department of Forest Ecology Environment and Wildlife. State level biodiversity strategy and action plan of Nagaland. [Kohima] : Department of Forest, Environment, Ecology, and Wildlife, Government of Nagaland, 2005.

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McMillan, Helen. Planning for sea level rise in the Northeast : Considerations for the implementation of tidal wetland habitat restoration projects : workshop report. [Silver Spring, Md.] : NOAA Restoration Center, Northeast Region, 2011.

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Lanka, IUCN Sri, et National Institute of Education (Sri Lanka), dir. Resource material on biodiversity : For general certificate of education (advanced level). Colombo : IUCN Sri Lanka, 1999.

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India. Dept. of Biotechnology., India. Dept. of Space. et Indian Institute of Remote Sensing., dir. Biodiversity characterisation at landscape level using satellite remote sensing and GIS. Dehradun : Indian Institute of Remote Sensing, National Remote Sensing Agency, Dept. of Space, Govt. of India, 2003.

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Zhang, Zhi-Qiang. Animal biodiversity : An outline of higher-level classification and survey of taxonomic richness. Auckland, N.Z : Magnolia Press, 2011.

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Pokharel, Mamata. Sensitization of district level political leaders on policy discourse of biodiversity conservation : Report January 1 to December 30, 2015. Sous la direction de National Federation of Youth NGOs, Nepal. Kathmandu : National Federation of Youth NGOs, Nepal (NFYN), 2015.

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India. Dept. of Biotechnology., India. Dept. of Space. et Indian Institute of Remote Sensing., dir. Biodiversity characterisation at landscape level in Western Ghats, India, using satellite remote sensing and geographic information system. Dehradun, Uttaranchal : Indian Institute of Remote Sensing, Dept. of Space, Govt. of India, 2002.

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India. Dept. of Biotechnology., India. Dept. of Space. et Indian Institute of Remote Sensing., dir. Biodiversity characterisation at landscape level in Western Ghats, India, using satellite remote sensing and geographic information system. Dehradun, Uttaranchal : Indian Institute of Remote Sensing, Dept. of Space, Govt. of India, 2002.

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Terry, De Lacy, et Birckhead Jim, dir. Culture, conservation, and biodiversity : The social dimension of linking local level development and conservation through protected areas. Chichester : John Wiley, 1996.

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High-Level Roundtable on "Cultural Diversity and Biodiversity for Sustainable Development" (2002 Johannesburg, South Africa). Cultural diversity and biodiversity for sustainable development : A jointly convened UNESCO and UNEP high-level roundtable held on 3 September 2002 in Johannesburg, South-Africa during the World Summit on Sustainable Development. Nairobi, Kenya : UNESCO, 2003.

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Chapitres de livres sur le sujet "Biodiversity level"

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Huijun, Guo, Christine Padoch, Fu Yongneng, Dao Zhiling et Kevin Coffey. « Household Level Agrobiodiversity Assessment (HH-ABA) ». Dans Cultivating Biodiversity, 70–77. Rugby, Warwickshire, United Kingdom : Practical Action Publishing, 2002. http://dx.doi.org/10.3362/9781780441092.007.

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Yongneng, Fu, Guo Huijun, Chen Aiguo et Cui Jingyun. « Diversity at household level in wet-rice fields at Daka, Xishuangbanna, Yunnan ». Dans Cultivating Biodiversity, 207–12. Rugby, Warwickshire, United Kingdom : Practical Action Publishing, 2002. http://dx.doi.org/10.3362/9781780441092.020.

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Karp, Angela, Peter G. Isaac et David S. Ingram. « Diversity and Differentiation at the Allelic Level ». Dans Molecular Tools for Screening Biodiversity, 303–6. Dordrecht : Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-009-0019-6_56.

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Karp, Angela, Peter G. Isaac et David S. Ingram. « Diversity and Differentiation at the Nucleotide Level ». Dans Molecular Tools for Screening Biodiversity, 306–11. Dordrecht : Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-009-0019-6_57.

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Ridgeway, L. « Global level institutions and processes ». Dans Governance of Marine Fisheries and Biodiversity Conservation, 139–47. Chichester, UK : John Wiley & Sons, Ltd., 2014. http://dx.doi.org/10.1002/9781118392607.ch10.

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Ridgeway, L. « Global level institutions and processes ». Dans Governance of Marine Fisheries and Biodiversity Conservation, 148–65. Chichester, UK : John Wiley & Sons, Ltd., 2014. http://dx.doi.org/10.1002/9781118392607.ch11.

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Collen, Ben, Janine Griffiths, Yolan Friedmann, Jon Paul Rodriguez, Franklin Rojas-Suàrez et Jonathan E. M. Baillie. « Tracking Change in National-Level Conservation Status : National Red Lists ». Dans Biodiversity Monitoring and Conservation, 17–44. Oxford, UK : Wiley-Blackwell, 2013. http://dx.doi.org/10.1002/9781118490747.ch2.

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Hindar, Kjetil. « Introductions at the Level of Genes and Populations ». Dans Invasive Species and Biodiversity Management, 149–61. Dordrecht : Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4523-7_10.

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Cummings, Jason, et Nick Reid. « Stand-level management of plantations to improve biodiversity values ». Dans Topics in Biodiversity and Conservation, 263–87. Dordrecht : Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-90-481-2807-5_14.

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Pereira, Henrique M., Jayne Belnap, Monika Böhm, Neil Brummitt, Jaime Garcia-Moreno, Richard Gregory, Laura Martin et al. « Monitoring Essential Biodiversity Variables at the Species Level ». Dans The GEO Handbook on Biodiversity Observation Networks, 79–105. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27288-7_4.

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Actes de conférences sur le sujet "Biodiversity level"

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de Snoo, Geert, et Anouk Cormont. « Biodiversity conservation on farmland : start at the landscape level ». Dans 5th European Congress of Conservation Biology. Jyväskylä : Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/108214.

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Fitriani, Indah, Nathaniel Aditya, Adisti Dwijayanti, Desak Gede Budi Krisnamurti, Erni Hernawati Purwaningsih et Rani Wardani Hakim. « Brain Derived Neurotrophin Factor (BDNF) Level in Aged Sprague Dawley Rats Brain after the Treatment of Centella asiatica Leaf Extracts ». Dans Bromo Conference, Symposium on Natural Products and Biodiversity. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0008357800830087.

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Lutaenko, Konstantin, et Konstantin Lutaenko. « COASTAL MARINE BIODIVERSITY OF VIETNAM : CURRENT PROBLEM ». Dans Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b9371a04467.54905418.

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A brief overview of the coastal biodiversity of Vietnam based on surveys conducted by the A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences for last 35 years. Main problems related to threats to biodiversity are discussed on the example of the intertidal communities, coral reefs, and molluscan diversity. Threats to marine biodiversity in Vietnam are summarized as follows: habitat degradation, fragmentation and loss (especially important are mangrove forest destruction, loss of coral reefs, change in landscape mosaic of wetland, estuary, sand and mud flats); global climate change including sea level rise, storm events, rainfall pattern change, warming of the coastal ocean; effects of fishing and other forms of overexploitation; pollution and marine litter; species introduction/invasions; physical alterations of coasts; tourism. Consolidated data of Vietnamese and Russian researchers on biodiversity and coastal zone management can be used in interpretations of ecosystem changes and for development of recommendations for local/national decision-makers.
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Lutaenko, Konstantin, et Konstantin Lutaenko. « COASTAL MARINE BIODIVERSITY OF VIETNAM : CURRENT PROBLEM ». Dans Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b43159228ea.

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A brief overview of the coastal biodiversity of Vietnam based on surveys conducted by the A.V. Zhirmunsky Institute of Marine Biology, Far Eastern Branch of the Russian Academy of Sciences for last 35 years. Main problems related to threats to biodiversity are discussed on the example of the intertidal communities, coral reefs, and molluscan diversity. Threats to marine biodiversity in Vietnam are summarized as follows: habitat degradation, fragmentation and loss (especially important are mangrove forest destruction, loss of coral reefs, change in landscape mosaic of wetland, estuary, sand and mud flats); global climate change including sea level rise, storm events, rainfall pattern change, warming of the coastal ocean; effects of fishing and other forms of overexploitation; pollution and marine litter; species introduction/invasions; physical alterations of coasts; tourism. Consolidated data of Vietnamese and Russian researchers on biodiversity and coastal zone management can be used in interpretations of ecosystem changes and for development of recommendations for local/national decision-makers.
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Mu¨ller, Rolf, Jianguo Ma, Zhen Yan, Cindy Grimm et Washington Mio. « Bioinspiration From Biodiversity in Sensor Design ». Dans ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64487.

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Biodiversity is a notable outcome of biological evolution. In the process of adaptive radiation, functional principles of sensing in biology have been adapted to suit different tasks and constraints. The biosonar system of bats is an example of such an adaptive radiation in sensing that also offers particularly advantageous conditions for a biodiversity-level analysis of adaptation principles with potential engineering relevance. The beam-forming capabilities of bat biosonar are tied to the geometries of external baffle structures, i.e., the outer ears used for reception and the noseleaves used to shape the emitted biosonar pulses. Since the geometries of these baffles determine their functions, which in turn can also be expressed by a shape (the beampattern), biosonar beamforming can be described by two interrelated shape spaces, one for biological form and the other for biological function. A shape space representation for the outer ears can be obtained by a cylindrical transform of the ear surfaces followed by principal component analysis. The results of this analysis are in a form that is suitable to inform the design of technical baffle shapes. However, additional analysis methods need to be developed for noseleaves, beampatterns, as well as the link between form and function.
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Andrei, Madalina-Teodora, et Tamara Simon. « WAYS TO CAPITALIZE ON BIODIVERSITY THROUGH TOURISM ». Dans 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/5.1/s21.090.

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Biodiversity can be defined as the diversity of ecosystems, expressed as symbioses, habitats, landscapes, species diversity and genetic diversity within species, i.e. the totality of the gene pool that constitutes nature at the global level. In the current period, but especially in the last half century, there has been a steady loss of biodiversity with major consequences for the living world and severe impacts on human society. Biodiversity is a fundamental basis for human existence and humanity is itself a part of biodiversity and our existence in the world would be impossible without it. Quality of life, economic competitiveness, workforce and security all rely on this biodiversity, which can be seen as natural capital. Through this prism, biodiversity can be sustainably exploited through certain types of tourism. Initially, its exploitation started with rural tourism, ecotourism. The expansion of these types of tourism beyond certain limits has led to unsustainable exploitation of natural resources, despite claims of minor impact on nature. In this context, it can be said that in the near future, the most recommended type of tourism will be nature tourism, which excludes the construction of tourist structures near or within all protected areas so as not to damage the integrity of the natural environment and not to degrade the natural capital resources on which economic and social development is based.
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Eggers, Jeannette, Ljusk Ola Eriksson, Eva-Maria Nordström et Tord Snäll. « Accounting for global drivers in landscape-level assessments of biodiversity and ecosystem services ». Dans 5th European Congress of Conservation Biology. Jyväskylä : Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/107755.

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Liepa, Sindija, Inga Grinfelde, Jovita Pilecka-Ulcugaceva, Juris Burlakovs et Anda Bakute. « OPPORTUNITIES FOR THE DEVELOPMENT OF SEASONAL ECOSYSTEM SERVICES IN THE CONTEXT OF SUSTAINABLE RIVER HYDROLOGY ». Dans 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/3.1/s12.17.

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The development of sustainable ecosystem services worldwide is one of the priority issues in the context of environmental protection. Sustainable use of ecosystem services ensures the conservation of natural resources for future generations. In the cold climate of the lowland river, there is a highly seasonal hydrological regime affecting the use of ecosystem services. Biodiversity in flood meadows depends directly on seasonal variations in water levels. Balanced hydro generation and water regulation can pose risks to biodiversity. The aim of this study is to analyse the impact of the hydroelectric power plant on the water level of flood meadows and its impact on biodiversity in the Natura2000 area. During the study nine monitoring stations were set up for the Svete River section in the administrative area of Jelgava municipality. Water level measurements were made one year at one hour interval. The flow rate measurements were performed monthly. The results of the study show that the hydroelectric power plant has a significant impact on the downstream, where increased river overgrowth wit plants is observed, because of the inability to provide ecological run-off during the summer. This study offers to optimize water flow rates by upgrading the operation of hydroelectric power.
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Primmer, Eeva. « Landscape level conservation needs more than a plan : understanding conditions for forest biodiversity governance ». Dans 5th European Congress of Conservation Biology. Jyväskylä : Jyvaskyla University Open Science Centre, 2018. http://dx.doi.org/10.17011/conference/eccb2018/108054.

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Nurhayati, Awik Puji Dyah, et Asti R. Febiyani. « The potency of curing fish waste pellet for growth and protein level of African sharptooth catfish (Clarias gariepinus) ». Dans PROCEEDING OF INTERNATIONAL BIOLOGY CONFERENCE 2016 : Biodiversity and Biotechnology for Human Welfare. Author(s), 2017. http://dx.doi.org/10.1063/1.4985419.

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Rapports d'organisations sur le sujet "Biodiversity level"

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Tsybekmitova, G. Ts, L. D. Radnaeva, N. A. Tashlykova, V. G. Shiretorova, A. K. Tulokhonov, B. B. Bazarova et M. O. Matveeva. THE EFFECT OF CLIMATIC SHIFTS ON BIODIVERSITY OF PHYTOCENOSIS : LAKE ARAKHLEY (EASTERN SIBERIA, RUSSIA). DOICODE, 2020. http://dx.doi.org/10.18411/0973-7308-2020-35-3-77-90.

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Lake Arakhley is located within the Lake Baikal basin in Eastern Siberia, Russia. The area is characterized by continental subarctic climate with considerate diurnal temperature range, long cold dry winters and short hot summers with more precipitation occurring during the latter half of the summer. Climatic shifts in high water years and low water years result in morphometric changes in the lake and in the chemical and physical parameters of the ecosystem. During low water years, concentrations of ammonium nitrogen and nitrite nitrogen are decreased, whereas nitrate concentration increases. High water years feature average concentrations of ammonium ions 1.5–2 times higher than the values of recent dry years. Redundancy analysis (RDA) of abiotic factors and biotic community indicated that the community structure shows the greatest correlation with physical and chemical parameters of water and biogenic elements (nitrites, ammonium, phosphates) along the first axis, and with the lake depth and transparency along the second axis. Changes in abiotic factors induce functioning and formation of characteristic communities of the primary producers in the trophic structure of the ecosystem. During low water years, with increased level of autochthonous organic matter, Lindavia comta dominance is observed, while during high water years, with increased allochthonous organic matter Asterionella formosa appeared as dominant. Currently, during low water years, the hydrophytes community is monodominant and composed of Ceratophyllum demersum. Meanwhile, such species indicating eutrophic conditions as Myriophyllum sibiricum, Potamogeton pectinatus are found in the lake vegetation.
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Sharma, E., N. Chettri, Birendra Bajracharya, R. Thapa, D. Choudhury, K. P. Oli, B. Shakya et K. Uddin. Biodiversity in the Eastern Himalayas : Status, Trends and Vulnerability to Climate Change ; Climate Change Impact and Vulnerability in the Eastern Himalayas - Technical Report 2. International Centre for Integrated Mountain Development (ICIMOD), 2010. http://dx.doi.org/10.53055/icimod.1006.

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Supported by the MacArthur Foundation, ICIMOD undertook a series of research activities together with partners in the Eastern Himalayas from 2007 to 2008 to provide a preliminary assessment of the impacts and vulnerability of this region to climate change. Activities included rapid surveys at country level, thematic workshops, interaction with stakeholders at national and regional levels, and development of technical papers by individual experts in collaboration with institutions that synthesised the available information on the region. A summary of the findings of the rapid assessment was published in 2009. The present publication is one of six technical papers used in the assessment. The main synthesis report is being published separately.
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Walz, Yvonne, Florence Nick, Oscar Higuera Roa, Udo Nehren et Zita Sebesvari. Coherence and Alignment among Sustainable Land Management, Ecosystem-based Adaptation, Ecosystem-based Disaster Risk Reduction and Nature-based Solutions. United Nations University - Institute for Environment and Human Security, novembre 2021. http://dx.doi.org/10.53324/mwgp9896.

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Approaches integrating environmental management practices have been gaining importance in recent years. Sustainable Land Management (SLM), Ecosystem-based Adaptation (EbA), Ecosystem-based disaster Risk Reduction (Eco-DRR) and Nature-based Solutions (NbS) are widely applied approaches that tackle certain drivers of challenges such as food insecurity, water scarcity, decline in biodiversity and threats to livelihoods, while also considering both human well-being and ecosystem functions and services. Better understanding the similarities, differences and relationships between these approaches helps to improve efficiency in implementation and leverage synergies. By shedding more light on where these approaches align, investments in land-based solutions in response to different types of environmental challenges can be more effectively designed to achieve multiple targets. In response to the United Nations Convention to Combat Desertification (UNCCD) decision 19/COP.14 paragraph 4, the main objective of this report is to understand and elaborate upon the characteristics of SLM, EbA, Eco-DRR and NbS. The report begins with an overview of the historical backgrounds and origins of SLM, EbA, Eco-DRR and NbS. Despite differences in their specific goals and targeted benefits, all approaches aim for the support of biodiversity, land-based ecosystems and ecosystem services and functions, and employ measures to conserve, restore and sustainably use land to support ecosystem services and functions, including SLM technologies. Furthermore, irrespective of their different goals, the projects developed under any approach can generate comparable co-benefits, especially due to their support of biodiversity. The capacity for all these approaches to deliver multiple co-benefits means that projects of each approach can directly contribute to implementing the specific goals of the other approaches as well. Thus, multiple global and national targets, frameworks, strategies and conventions which call for the implementation of one or more of these approaches, can benefit from this report by avoiding duplication and reducing the overall investments necessary to achieve the set targets and goals. This is critical for achieving the ambitious Agenda 2030, including voluntary land degradation neutrality (LDN) targets and climate action under the Paris Agreement. It will also be the case for the post-2020 global biodiversity framework currently under development. The added value that will come from optimizing the links among these approaches extends from national policymakers to the practitioners of SLM, EbA and Eco-DRR projects, which all share the ultimate goal of sustainable development. To capture the coherence and alignment among these approaches, their similarities and differences have been summarized in a conceptual framework. The framework has been designed to help practitioners understand the specific goals of each approach, and to link these to the relevant global and national targets, frameworks, strategies and conventions, which can support monitoring and evaluation as well as reporting processes. The synergies among these approaches are further illustrated based on three case studies in order to demonstrate opportunities for leveraging multiple co-benefits and targets at implementation level irrespective of the different objectives under each. The results of this assessment demonstrate that activities under one approach can be beneficial to achieve the specific goals of other approaches with little additional effort. It is essential for policymakers, project developers and practitioners to recognize that. This is key to the achievement of sustainable development.
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Jung, Jacob, Richard Fischer, Chester McConnell et Pam Bates. The use of US Army Corps of Engineers reservoirs as stopover sites for the Aransas–Wood Buffalo population of whooping crane. Engineer Research and Development Center (U.S.), août 2022. http://dx.doi.org/10.21079/11681/44980.

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This technical report summarizes the use of US Army Corps of Engineers (USACE) reservoirs as spring and fall migration stopover sites for the endangered Aransas–Wood Buffalo population of whooping cranes (WHCR), which proved much greater than previously known. We assessed stopover use within the migration flyway with satellite transmitter data on 68 WHCR during 2009–2018 from a study by the US Geological Survey (USGS) and collaborators, resulting in over 165,000 location records, supplemented by incidental observations from the US Fish and Wildlife Ser-vice (USFWS) and the USGS Biodiversity Information Serving Our Nation (BISON) databases. Significant stopover use was observed during both spring and fall migration, and one reservoir served as a wintering location in multiple years. Future efforts should include (a) continued monitoring for WHCR at USACE reservoirs within the flyway; (b) reservoir-specific management plans at all projects with significant WHCR stopover; (c) a USACE-specific and range-wide Endangered Species Act Section 7(a)(1) conservation plan that specifies proactive conservation actions; (d) habitat management plans that include potential pool-level modifications during spring and fall to optimize stopover habitat conditions; and (e) continued evaluation of habitat conditions at USACE reservoirs.
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Neeley, Aimee, Stace E. Beaulieu, Chris Proctor, Ivona Cetinić, Joe Futrelle, Inia Soto Ramos, Heidi M. Sosik et al. Standards and practices for reporting plankton and other particle observations from images. Woods Hole Oceanographic Institution, juillet 2021. http://dx.doi.org/10.1575/1912/27377.

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This technical manual guides the user through the process of creating a data table for the submission of taxonomic and morphological information for plankton and other particles from images to a repository. Guidance is provided to produce documentation that should accompany the submission of plankton and other particle data to a repository, describes data collection and processing techniques, and outlines the creation of a data file. Field names include scientificName that represents the lowest level taxonomic classification (e.g., genus if not certain of species, family if not certain of genus) and scientificNameID, the unique identifier from a reference database such as the World Register of Marine Species or AlgaeBase. The data table described here includes the field names associatedMedia, scientificName/ scientificNameID for both automated and manual identification, biovolume, area_cross_section, length_representation and width_representation. Additional steps that instruct the user on how to format their data for a submission to the Ocean Biodiversity Information System (OBIS) are also included. Examples of documentation and data files are provided for the user to follow. The documentation requirements and data table format are approved by both NASA’s SeaWiFS Bio-optical Archive and Storage System (SeaBASS) and the National Science Foundation’s Biological and Chemical Oceanography Data Management Office (BCO-DMO).
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Eneroth, Hanna, Hanna Karlsson Potter et Elin Röös. Environmental impact of coffee, tea and cocoa – data collection for a consumer guide for plant-based foods. Department of Energy and Technology, Swedish University of Agricultural Sciences, 2022. http://dx.doi.org/10.54612/a.2n3m2d2pjl.

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In 2020, WWF launched a consumer guide on plant-based products targeting Swedish consumers. The development of the guide is described in a journal paper (Karlsson Potter & Röös, 2021) and the environmental impact of different plant based foods was published in a report (Karlsson Potter, Lundmark, & Röös, 2020). This report was prepared for WWF Sweden to provide scientific background information for complementing the consumer guide with information on coffee, tea and cocoa. This report includes quantitative estimations for several environmental categories (climate, land use, biodiversity and water use) of coffee (per L), tea (per L) and cocoa powder (per kg), building on the previously established methodology for the consumer guide. In addition, scenarios of consumption of coffee, tea and cocoa drink with milk/plant-based drinks and waste at household level, are presented. Tea, coffee and cacao beans have a lot in common. They are tropical perennial crops traditionally grown in the shade among other species, i.e. in agroforestry systems. Today, the production in intensive monocultures has negative impact on biodiversity. Re-introducing agroforestry practices may be part of the solution to improve biodiversity in these landscapes. Climate change will likely, due to changes in temperature, extreme weather events and increases in pests and disease, alter the areas where these crops can be grown in the future. A relatively high ratio of the global land used for coffee, tea and cocoa is certified according to sustainability standards, compared to other crops. Although research on the implications of voluntary standards on different outcomes is inconclusive, the literature supports that certifications have a role in incentivizing more sustainable farming. Coffee, tea and cocoa all contain caffeine and have a high content of bioactive compounds such as antioxidants, and they have all been associated with positive health outcomes. While there is a strong coffee culture in Sweden and coffee contributes substantially to the environmental impact of our diet, tea is a less consumed beverage. Cocoa powder is consumed as a beverage, but substantial amounts of our cocoa consumption is in the form of chocolate. Roasted ground coffee on the Swedish market had a climate impact of 4.0 kg CO2e per kg powder, while the climate impact of instant coffee powder was 11.5 kg CO2e per kg. Per litre, including the energy use for making the coffee, the total climate impact was estimated to 0.25 kg CO2e per L brewed coffee and 0.16 kg CO2e per L for instant coffee. Less green coffee beans are needed to produce the same amount of ready to drink coffee from instant coffee than from brewed coffee. Tea had a climate impact of approximately 6.3 kg CO2 e per kg dry leaves corresponding to an impact of 0.064 CO2e per L ready to drink tea. In the assessment of climate impact per cup, tea had the lowest impact with 0.013 kg CO2e, followed by black instant coffee (0.024 kg CO2e), black coffee (0.038 kg CO2e), and cocoa drink made with milk (0.33 kg CO2e). The climate impact of 1kg cocoa powder on the Swedish market was estimated to 2.8 kg CO2e. Adding milk to coffee or tea increases the climate impact substantially. The literature describes a high proportion of the total climate impact of coffee from the consumer stage due to the electricity used by the coffee machine. However, with the Nordic low-carbon energy mix, the brewing and heating of water and milk contributes to only a minor part of the climate impact of coffee. As in previous research, coffee also had a higher land use, water use and biodiversity impact than tea per L beverage. Another factor of interest at the consumer stage is the waste of prepared coffee. Waste of prepared coffee contributes to climate impact through the additional production costs and electricity for preparation, even though the latter was small in our calculations. The waste of coffee and tea at Summary household level is extensive and measures to reduce the amount of wasted coffee and tea could reduce the environmental impact of Swedish hot drink consumption. For the final evaluation of coffee and tea for the consumer guide, the boundary for the fruit and vegetable group was used. The functional unit for coffee and tea was 1 L prepared beverage without any added milk or sweetener. In the guide, the final evaluation of conventionally grown coffee is that it is ‘yellow’ (‘Consume sometimes’), and for organic produce, ‘light green’ (‘Please consume). The evaluation of conventionally grown tea is that it is ‘light green’, and for organic produce, ‘dark green’ (‘Preferably consume this’). For cocoa, the functional unit is 1 kg of cocoa powder and the boundary was taken from the protein group. The final evaluation of conventionally grown cocoa is that it is ‘orange’ (‘Be careful’), and for organically produced cocoa, ‘light green’.
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Salavisa, Isabel, Mark Soares et Sofia Bizarro. A Critical Assessment of Organic Agriculture in Portugal : A reflection on the agro-food system transition. DINÂMIA'CET-Iscte, 2021. http://dx.doi.org/10.15847/dinamiacet-iul.wp.2021.05.

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Over the last few decades, the organic agriculture sector has experienced sustained growth. Globally, as well as in the European Union and Portugal, organic production accounts for just under 10% of total Utilised Agricultural Area (UAA) (FiBL, 2019; Eurostat, 2019; DGADR, 2019; INE, 2019; GPP, 2019). This growth has been seen in terms of production, number of producers, amount of retail sales, imports and exports. This article attempts to build on the multi-level perspective (MLP) of the socio-technical (ST) transitions theory by employing a whole systems analysis (Geels, 2018) of organic agriculture in Portugal, which defends an integrated vision of the systems, where multiple interactions occur within and among the niche, the regime and the landscape levels. This approach has been employed in order to develop a critical analysis of the current state of the Portuguese organic agriculture sector, stressing the multiplicity of elements that are contributing to the agro-food system´s transformation into a more sustainable one. In fact, the agro-food system is related with climate change but also has connections with other domains such as public health, water management, land use and biodiversity. Therefore, it is affected by shifts in these areas. This analysis considers developments in increasing domestic organic production, number of producers, amount of retail sales, imports, exports, market innovations, and the sector´s reconfiguration. The organic sector´s increase has been attributed to European regulation, institutionalization, standardization, farmer certification, external (government) subsidy support programs, incremental market improvements (visibility and product access), the emergence of new retailers, the rise of supporting consumers and a shift away from conventional agriculture (Truninger, 2010; DGADR, 2019; Pe´er et al, 2019). However, together with positive incentives, this sector also faces numerous barriers that are hindering a faster transformation. Difficulties for the sector to date have included: product placement; a disconnect between production, distribution and marketing systems; high transport costs; competition from imports; European subsidies focused on extensive crops (pastures, olive groves, and arable crops), entailing a substantial growth in the area of pasture to the detriment of other crops; the fact that the products that are in demand (fresh vegetables and fruit) are being neglected by Portuguese producers; expensive certification procedures; lack of adequate support and market expertise for national producers; the hybrid configuration of the sector; and price. Organic agriculture as a niche-innovation is still not greatly contributing to overall agricultural production. The low supply of organic products, despite its ever-increasing demand, suggests that a transition to increased organic production requires a deeper and faster food system reconfiguration, where an array of distinct policies are mobilized and a diversity of actions take place at different levels (Geels, 2018; Pe´er et al, 2019). This paper will attempt to contribute an overall critical assessment of the organic sector´s features and evolution and will identify some of the main obstacles to be overcome, in order to boost the sustainability transition of the agro-food system in Portugal.
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Börjesson, Patrik, Maria Eggertsen, Lachlan Fetterplace, Ann-Britt Florin, Ronny Fredriksson, Susanna Fredriksson, Patrik Kraufvelin et al. Long-term effects of no-take zones in Swedish waters. Sous la direction de Ulf Bergström, Charlotte Berkström et Mattias Sköld. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.10da2mgf51.

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Marine protected areas (MPAs) are increasingly established worldwide to protect and restore degraded ecosystems. However, the level of protection varies among MPAs and has been found to affect the outcome of the closure. In no-take zones (NTZs), no fishing or extraction of marine organisms is allowed. The EU Commission recently committed to protect 30% of European waters by 2030 through the updated Biodiversity Strategy. Importantly, one third of these 30% should be of strict protection. Exactly what is meant by strict protection is not entirely clear, but fishing would likely have to be fully or largely prohibited in these areas. This new target for strictly protected areas highlights the need to evaluate the ecological effects of NTZs, particularly in regions like northern Europe where such evaluations are scarce. The Swedish NTZs made up approximately two thirds of the total areal extent of NTZs in Europe a decade ago. Given that these areas have been closed for at least 10 years and can provide insights into long-term effects of NTZs on fish and ecosystems, they are of broad interest in light of the new 10% strict protection by 2030 commitment by EU member states. In total, eight NTZs in Swedish coastal and offshore waters were evaluated in the current report, with respect to primarily the responses of focal species for the conservation measure, but in some of the areas also ecosystem responses. Five of the NTZs were established in 2009-2011, as part of a government commission, while the other three had been established earlier. The results of the evaluations are presented in a synthesis and also in separate, more detailed chapters for each of the eight NTZs. Overall, the results suggest that NTZs can increase abundances and biomasses of fish and decapod crustaceans, given that the closed areas are strategically placed and of an appropriate size in relation to the life cycle of the focal species. A meta-regression of the effects on focal species of the NTZs showed that CPUE was on average 2.6 times higher after three years of protection, and 3.8 times higher than in the fished reference areas after six years of protection. The proportion of old and large individuals increased in most NTZs, and thereby also the reproductive potential of populations. The increase in abundance of large predatory fish also likely contributed to restoring ecosystem functions, such as top-down control. These effects appeared after a 5-year period and in many cases remained and continued to increase in the longer term (>10 years). In the two areas where cod was the focal species of the NTZs, positive responses were weak, likely as an effect of long-term past, and in the Kattegat still present, recruitment overfishing. In the Baltic Sea, predation by grey seal and cormorant was in some cases so high that it likely counteracted the positive effects of removing fisheries and led to stock declines in the NTZs. In most cases, the introduction of the NTZs has likely decreased the total fishing effort rather than displacing it to adjacent areas. In the Kattegat NTZ, however, the purpose was explicitly to displace an unselective coastal mixed bottom-trawl fishery targeting Norway lobster and flatfish to areas where the bycatches of mature cod were smaller. In two areas that were reopened to fishing after 5 years, the positive effects of the NTZs on fish stocks eroded quickly to pre-closure levels despite that the areas remained closed during the spawning period, highlighting that permanent closures may be necessary to maintain positive effects. We conclude from the Swedish case studies that NTZs may well function as a complement to other fisheries management measures, such as catch, effort and gear regulations. The experiences from the current evaluation show that NTZs can be an important tool for fisheries management especially for local coastal fish populations and areas with mixed fisheries, as well as in cases where there is a need to counteract adverse ecosystem effects of fishing. NTZs are also needed as reference for marine environmental management, and for understanding the effects of fishing on fish populations and other ecosystem components in relation to other pressures. MPAs where the protection of both fish and their habitats is combined may be an important instrument for ecosystembased management, where the recovery of large predatory fish may lead to a restoration of important ecosystem functions and contribute to improving decayed habitats. With the new Biodiversity Strategy, EUs level of ambition for marine conservation increases significantly, with the goal of 30% of coastal and marine waters protected by 2030, and, importantly, one third of these areas being strictly protected. From a conservation perspective, rare, sensitive and/or charismatic species or habitats are often in focus when designating MPAs, and displacement of fisheries is then considered an unwanted side effect. However, if the establishment of strictly protected areas also aims to rebuild fish stocks, these MPAs should be placed in heavily fished areas and designed to protect depleted populations by accounting for their home ranges to generate positive outcomes. Thus, extensive displacement of fisheries is required to reach benefits for depleted populations, and need to be accounted for e.g. by specific regulations outside the strictly protected areas. These new extensive EU goals for MPA establishment pose a challenge for management, but at the same time offer an opportunity to bridge the current gap between conservation and fisheries management.
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Brzoska, Michael, Wuyi Omitoogun et Elisabeth Sköns. The Human Security Case for Military Expenditure Reductions. Stockholm International Peace Research Institute, mars 2022. http://dx.doi.org/10.55163/tmrz9944.

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Global military expenditure has reached record levels. At the same time, hundreds of millions of people face non-traditional ‘vital’ risks and threats to their security—threats to their lives, livelihoods and dignity. Accelerating climate change and growing loss of biodiversity add unprecedented urgency to investing in people’s security. The concept of human security, as explained in this paper, emphasizes the security of people without neglecting the security of states and state order. The human security approach stresses the necessity to balance the financial needs from all vital risks and threats, regardless of their cause. It logically leads to a reassessment of spending on the military. It also seriously considers the fear that reducing military expenditure will reduce the security of states, a major barrier to past international initiatives to reduce military expenditure. As a first step to initiate the rebalancing, this paper proposes three priority fields of activity to free resources from military spending: (a) arms control and disarmament negotiations and agreements; (b) sector-wide security sector reform for conflict prevention; and (c) financial responsibility in military expenditure and arms procurement. These can be taken without impairing the security of states and state order. If successful, these steps would remove barriers to further military expenditure reductions to improve the human condition in an increasingly dangerous Anthropocene.
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Perkins, Dustin. Invasive exotic plant monitoring at Dinosaur National Monument : Results of the 2019 field season on the Green River, and the third completed monitoring rotation. Sous la direction de Alice Wondrak Biel. National Park Service, décembre 2021. http://dx.doi.org/10.36967/nrr-2284627.

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Invasive exotic plant (IEP) species are a significant threat to natural ecosystem integrity and biodiversity, and controlling them is a high priority for the National Park Service. The Northern Colorado Plateau Network (NCPN) selected the early detection of IEPs as one of 11 monitoring protocols to be implemented as part of its long-term monitoring program. We also calculated a patch management index (PMI) to quantify the extent and density of invasive patches into a single value that helps identify the scale of the problem. Park managers can use this tool to help prioritize IEP treatment. At Dinosaur National Monument, the NCPN monitors IEPs in the Green and Yampa river corridors. This report summarizes data from monitoring on the Green River in 2019, and monitoring on the Yampa River in 2017, to represent the completion of the third monitoring rotation of the entire river corridor (2002–2005, 2010–2011, 2017–2019). During surveys conducted from June 26 to July 2, 2019, NCPN staff detected 12 priority IEP species and two non-priority species in a 84.6-hectare (209-acre) area along 74.4 kilometers of the Green River above (“upper”) and below (“low-er”) its confluence with the Yampa. A total of 2,535 IEP patches were detected. Of those patches, 24.2% and 15.6% were smaller than 40 m2 on the upper and lower Green River reaches, respectively. The patch management index (PMI) was low or very low for 95.7% of patches on the upper Green River and 90.9% of patches on the lower Green River. Tamarisk (Tamarix sp.), broad-leaf pepperwort (Lepidium latifolium), and yellow sweetclover (Meli-lotus officinalis) were the most widespread species. For the first time, NCPN monitoring detected teasel (Dipsacus sylvestris) on the upper Green River. Yellow sweetclover has increased on all three river reaches during the survey years. Musk thistle (Carduus nutans) was found at considerably lower levels than yellow sweetclover but has also increased on all three river reaches. Leafy spurge is increasing on the lower Green River and Yampa River. Cheatgrass was not monitored in the first rotation, but increased substantially in cover and percent frequency on all three river sections from 2010–2011 to 2017–2019. This increase may be due to a lack of recent high-flow scouring events. The highly regulated upper Green River generally has the highest number of IEPs, while the lower Green River has a moderate amount of IEPs. The largely unregulated flows of the Yampa River continue to result in a lower number of patches per kilometer, lower percent cover, and lower percent frequency than the upper or lower Green River. Network staff will return to the monument in 2022 to begin the fourth monitoring rotation.
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