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Letteratura scientifica selezionata sul tema "Biological diversity – Economic aspects"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 9 febbraio 2022

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Articoli di riviste sul tema "Biological diversity – Economic aspects"

Gowdy, John M. "Economic and biological aspects of genetic diversity". Society & Natural Resources 6, n. 1 (gennaio 1993): 1–16. http://dx.doi.org/10.1080/08941929309380804.

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Alikhanova, Shahzoda. "GENDER ASPECTS OF NATURAL RESOURCES USE". JOURNAL OF AGRO PROCESSING 6, n. 2 (30 giugno 2020): 30–34. http://dx.doi.org/10.26739/2181-9904-2020-6-5.

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This analytical article examines the issues of natural resources use and conservation of the biological diversity through the prism of a gender-based approach. In particular, the author touches upon the issues of equal access by both men and women to the management, use and protection of natural resources and biological diversity. Examples are given from different regions of the world in various sectors of environmental and economic activities. Recommendations are provided for improving the equitable use of natural resources.

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Herber, Bernard P. "Bioprospecting in Antarctica: the search for a policy regime". Polar Record 42, n. 2 (aprile 2006): 139–46. http://dx.doi.org/10.1017/s0032247406005158.

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This paper aims to elucidate the important economic and political aspects of an extremely complex policy issue involving biological prospecting (bioprospecting) in Antarctica. In addressing this rapidly growing global industry, which searches for commercially valuable biological and genetic resources in a world of biological diversity, it becomes obvious that a critical interface exists between Antarctica and the intertwined bioprospecting policies brought forth during recent decades by two treaties, the Convention on Biological Diversity and the United Nations Convention on the Law of the Sea. The analytical framework of the paper builds upon the economic concept of public goods within a political framework of international treaties and law. The concept of a national public good, associated with the sovereignty of a state (nation) over its biological and genetic resources, is the basis of such policy under the Biological Diversity Treaty. In practice, this jurisdiction applies both to the land area of a state and to the exclusive economic zone of a coastal state. The Law of the Sea Treaty, on the other hand, provides both a national public good connotation to exclusive economic zones while creating a global public good connotation for deep seabed mineral resources, with a related potential application to bioprospecting in the deep seabed. While the Antarctic Treaty System possesses several institutions that could be adapted to a bioprospecting policy regime, no such regime has been established up to the present. The paper concludes with a consideration of the critical question: is bioprospecting in Antarctica a national or global public good? While logic would appear to lead one toward the ‘global’ answer, multinational economic and political realities in today's world suggest that either a national public good approach, or a largely unregulated open access approach, is more likely to prevail.

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Charles, A., S. M. Garcia e J. Rice. "Balanced harvesting in fisheries: economic considerations". ICES Journal of Marine Science 73, n. 6 (11 settembre 2015): 1679–89. http://dx.doi.org/10.1093/icesjms/fsv161.

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Abstract This paper explores economic aspects of a recent proposal to shift fisheries to a “Balanced Harvesting” (BH) strategy, as a means to achieve the goal, set by the Convention on Biological Diversity and related to the Ecosystem Approach to Fisheries, of “conservation of ecosystem structure and functioning” within fishery ecosystems. Studies indicate that a BH strategy—broadening the range of species and sizes caught in the aquatic ecosystem, and lowering exploitation rates for some conventionally targeted species—may provide improved ecological performance relative to conventional harvesting strategies. However, the potential economic implications have received little attention to date. This paper provides a preliminary economic assessment of BH, focusing on six main themes: (i) assessing benefits and costs, (ii) factors affecting the economics of BH, (iii) economic issues in implementing the ingredients of BH, (iv) effects of incremental and/or partial implementation of BH, (v) transition options within the harvesting sector of the fishery, and (vi) distributional impacts arising across fisheries, fleet sectors, and fishing gears, and between the present and the future.

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Boot, R. G. A. "Extraction of non-timber forest products from tropical rain forests. Does diversity come at a price?" Netherlands Journal of Agricultural Science 45, n. 4 (1 dicembre 1997): 439–50. http://dx.doi.org/10.18174/njas.v45i4.504.

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Tropical rain forests are rich in plant and animal species. The sustainable extraction of non-timber forest products has been advocated as a strategy to best conserve this diversity. However, the development and implementation of such exploitation systems, which aim to reconcile conservation and economic development, are still hampered by the lack of information on the biological sustainability of these systems, the impact of these exploitation systems on the biological diversity and the insufficient knowledge of the role of forest products in the household economy of forest dependent people and hence their prospects for economic development. Whether the exploitation of non-timber forest products from tropical rain forests is sustainable or not is still open to question, but data presently available on the biological, social and economic aspects of these extraction systems point at an interesting question: does diversity come at a price? Namely, low density of conspecifics, and thus products, and hence low productivity for those involved in the collection of forest resources. The paper will further discuss whether domestication of forest species provides an alternative for some of these species. Species are part of a complex ecosystem and their functioning is partly depended on the presence of other species in the system. The attributes of the species which have to be taken into account in order to make domestication of forest species successful are considered. Finally, the paper returns to the question of how to reconcile conservation and use of tropical rain forests. It will present a case for domesticating the forest instead of the species or, in other words, changing the forest composition without changing its structure and functioning, and maintaining acceptable levels of biodiversity.

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Hrytsku, Veronika, e Olga Danilova. "Eco-Network Development in Ukraine: European, National and Regional Aspects". Present Environment and Sustainable Development 12, n. 1 (1 giugno 2018): 295–308. http://dx.doi.org/10.2478/pesd-2018-0023.

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Abstract Development of ecological network of different taxonomic ranks is a weighty contribution to regional sustainable development. It proved to be among the most efficient ways to help preserve biological and landscape diversity. National eco-network in Ukraine is being formed alongside with European network. However, its development in this country is connected with certain problems existing on both national and local levels. Our analysis of national eco-network’s present-day state showed that Ukraine is rather successful in the concept’s realization. The network’s territory dynamically increases; legal and regulatory framework and methodical/applied approaches are being developed; and neighboring states are closely and intensely cooperated with in questions of formation of econetwork elements within boundary territories. However, the major goal - formation of eco-network as an integral system with its maximally possible continuity and inter-linkage of component elements - has not yet been achieved. The situation is explained by a number of problems occurring in juridical, economic and organizational spaces.

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Genovese, Laura, Roberta Varriale, Loredana Luvidi e Fabio Fratini. "Italy and China Sharing Best Practices on the Sustainable Development of Small Underground Settlements". Heritage 2, n. 1 (8 marzo 2019): 813–25. http://dx.doi.org/10.3390/heritage2010053.

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Both Southern Italy and Central China feature historic rural settlements characterized by underground constructions with residential and service functions. Many of these areas are currently tackling economic, social and environmental problems, resulting in unemployment, disengagement, depopulation, marginalization or loss of cultural and biological diversity. Both in Europe and in China, policies for rural development address three core areas of intervention: agricultural competitiveness, environmental protection and the promotion of rural amenities through strengthening and diversifying the economic base of rural communities. The challenge is to create innovative pathways for regeneration based on raising awareness to inspire local rural communities to develop alternative actions to reduce poverty while preserving the unique aspects of their local environment and culture. In this view, cultural heritage can be a catalyst for the sustainable growth of the rural community. Through a series of projects on a national and international scale, the authors have addressed some of these problems by exchanging best practices in conservation, sustainable use and the enhancement of the underground heritage.

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Granado, José, Marianna Harmath, Umberto Tecchiati, Klaus Oeggl, Jörg Schibler e Angela Schlumbaum. "MtDNA D-Loop Diversity in Alpine Cattle during the Bronze Age". Diversity 13, n. 9 (19 settembre 2021): 449. http://dx.doi.org/10.3390/d13090449.

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The Bronze Age in Europe is characterized by major socio-economic changes, including certain aspects of animal husbandry. In the Alpine region archaeozoological data, though not very abundant, reveal that cattle were the most important domestic animals in this time period. They were probably used differently in the lowlands than at higher altitude, traction became more important and people increasingly exploited them for dairy products rather than for meat. Thus, a crucial question in this context is whether these major events are accompanied by changes in genetic diversity of cattle. Here we report partial mtDNA d-loop data (320 bp) obtained by PCR from 40 alpine cattle excavated at different sites in South Tyrol, Italy, and Grisons, Switzerland. Most cattle belong to the main European taurine T3 haplogroup, but a few members of T2 and Q haplogroups were identified. Moreover, genetic diversity measures and population genetic statistics indicate different cattle histories at different sites, including bottlenecks and potential admixture. However, Bronze Age Alpine cattle appear to be linked to modern rural cattle mainly from Italy.

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Hazarika, Arup Kumar, Unmilan Kalita, Subhash Khanna, Tarali Kalita e Sangeeta Choudhury. "Diversity of edible insects in a Natural World Heritage Site of India: entomophagy attitudes and implications for food security in the region". PeerJ 8 (16 novembre 2020): e10248. http://dx.doi.org/10.7717/peerj.10248.

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Insects not only play a significant role in the ecological process of nature but since pre-historic times have also formed a part of the human diet. With a still growing population and skewed demographic structures across most societies of the world, their role as nutrient-rich food has been increasingly advocated by researchers and policymakers globally. In this study, we examine the edible insect diversity and entomophagy attitudes of ethnic people in Manas National Park, a UNESCO Natural World Heritage Site, located in Assam (India). The study involved a field investigation through which the pattern of entomophagy and the attitude towards insect-eating was studied. Following this, we examined the edible insect diversity and abundance at different sampling points. A total of 22 species of edible insects belonging to fifteen families and eight orders were recorded from different habitat types. Out of these 22 species, Orthopterans showed a maximum number of eight species followed by Hymenoptera (four), Hemiptera (three), Lepidoptera (two), Blattodea (two) and one species each from Coleoptera, Odonata, and Mantodea. Dominance, diversity, and equitability indices were computed along with the relative abundance of the insects concerning four habitat types. Aspects of the economic significance of entomophagy were also observed during the field investigation. To manage insects in the interest of food security, more attention should be given to sustainable collecting and rearing methods emphasizing their economic, nutritional, and ecological advantages.

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Leary, David. "Greenland's new legislation on commercial and research-related use of biological resources: implications for the International Polar Year and later". Polar Record 44, n. 2 (aprile 2008): 97–106. http://dx.doi.org/10.1017/s0032247407007073.

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ABSTRACTNew possibilities for economic development have been identified by the Greenland Home Rule Government in recent years. One of these is the potential for development of biotechnology based on Greenland's biodiversity. To ensure that Greenland shares in benefits derived from the exploitation of these resources the Home Rule Parliament recently enacted legislation on commercial and research-related use of biological resources that is premised on rights recognised by the 1992 Convention on Biological Diversity. This legislation represents the first law in an Arctic jurisdiction specifically to create a mechanism for access and benefit sharing in relation to Arctic genetic resources. The main area of research and commercial interest so far relates to potential developments in biotechnology from the microbial diversity of ikaite tufa columns located in the Ikka Fjord in southwest Greenland. The legislation seeks to provide a mechanism for regulating access to such biological resources and a means for Greenland to share in the potential benefits that may come from scientific research on them and subsequent commercialisation. Much research in Greenland now falls within the scope of this legislation. The purpose of this article is to explain the provisions of the legislation to the polar research community as well as to review its implications for research in the International Polar Year and later. The legislation imposes many new obligations on researchers in Greenland including obligations to obtain survey licences, obligations on reporting and the regulation of publication of scientific research. Commercially focussed research is also tightly regulated with a particular emphasis on patent rights. However, many aspects of the legislation are uncertain and it is unclear how much of the legislation will be implemented in practice.

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Più fonti

Tesi sul tema "Biological diversity – Economic aspects"

Gerber, Nicolas Economics Australian School of Business UNSW. "Biodiversity measurement, species interactions and sustainability". Awarded by:University of New South Wales. School of Economics, 2006. http://handle.unsw.edu.au/1959.4/26796.

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Throughout the last two decades, biodiversity has been increasingly acknowledged as a valuable asset. However there are numerous challenges to managing the asset. Firstly, there is no universally accepted measure of biodiversity per se. As a consequence, rather than measuring the intrinsic value of biodiversity the focus has typically shifted to valuing biodiversity services. Secondly, biodiversity issues should not be considered in a vacuum, but rather alongside general natural resource management problems. Conservation agencies and regulators alike would greatly benefit from more transparent biodiversity targets for conservation policies and natural resource management. This thesis makes a number of contributions to meet these challenges including measuring biodiversity, modelling diverse ecosystems and considering biodiversity outcomes in the management of an environmental resource. To value biodiversity, it is essential to measure it. Focusing on pairwise genetic dissimilarities at the species level, this thesis develops two models for measuring biodiversity. An axiomatic diagnosis of the existing and new measures is presented. This comparison suggests that the adequate biodiversity measure depends on the context. The diversity measures describe the biodiversity catalogue available at a given point in time. Modelling biodiversity is important for forecasting the impact of conservation decisions and understanding the future value of biodiversity. The importance of each species, however, depends on its role in the ecosystem as well as its genetic diversity. The interactions between species are therefore investigated and described, using a new model built around CES production functions. Three existing models based on predator-prey equations are extended to the multi-species case. These interaction models provide the necessary link for biodiversity maintenance over time. The four models are compared using simulations and an axiomatic approach. This approach shows that the new model performs well, offers the flexibility required to describe different types of ecosystems and is less data intensive. Finally, a case study of natural resource exploitation is presented, illustrating the idea that biodiversity loss can have direct economic implications in natural resource management. The model shows the impact of market structures on the extraction path of the resource and the distribution of the resource rent.

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Bush, Glenn K. "The economic value of Albertine Rift Forests : applications in policy and programming". Thesis, University of Stirling, 2009. http://hdl.handle.net/1893/2309.

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The objective of this thesis is to quantitatively understand the economic performance of protected area management strategies for forest and biodiversity conservation. Examples such as integrated conservation and development and eco tourism are assessed in terms of their ability to deliver on welfare benefits to local communities, and an assessment of the opportunity costs of forest conservation as a land use strategy. In addition the contribution of forest conservation in protected areas can make to poverty alleviation and economic development is also examined. The geographical focus of this study is the Albertine Rift region of East and Central Africa, stretching north from the southern end of Lake Tanganyika through the spine of Africa to the northern end of Lake Albert. The Albertine Rift is one of Africa’s most important landscapes for the conservation of forests and biodiversity. The overarching objective is addressed using a series of case studies empirically valuing the opportunity costs of conserving forests in a selection of sites in the central part of the Albertine Rift. The success of conservation is most often measured against progress in reducing habitat or species loss and not often in terms of the contribution of the protected area to poverty alleviation and local economic development. Achieving improvements of conservation strategies in the social dimension requires objective evidence on their effects. Economic valuation of protected area resources provides a quantitative means of assessing the promise and performance of conservation policies in achieving welfare benefits to local communities. This thesis provides three case studies each addressing current valuation and social issues in conservation and sets them in a context of managing protected areas in the broad dynamic setting of poverty alleviation and economic growth from a developing economy perspective. In addition two of the empirical studies are as concerned with methodological enquiry and the performance of novel environmental economic valuation techniques, such as the contingent valuation and choice modelling approaches, as the application of results to conservation questions. The empirical studies show that the benefits to local households and communities from their local forests may be greater than at first perceived. Across all protected area categories, biomes and income groups, households derived significant amounts of their overall income from their local protected area with large proportions of the value of goods harvested from forests being consumed in the home. Amongst income groups high income households often appropriated a greater share of the value of forest goods. There was no significant difference found between the household consumption and the sale of protected area products between income groups. The findings indicate that imposing reductions in forest use may increase poverty amongst local people whilst increasing household income will not necessarily reduce forest exploitation. This indicates that community conservation and integrated conservation and development programmes must target the poor forest adjacent households more actively to ensure poverty alleviation, whilst providing improved protection and law enforcement for effective conservation. It is also shown that biodiversity conservation can have an economic return through mountain gorilla eco-tourism. Findings show a disparity between what constitutes eco-tourism and the real values of tourists towards biodiversity conservation and local social benefits from protected areas. Despite showing a high marginal utility for biodiversity conservation, consumers are unwilling to pay for local community benefits from tourism as part of the permit price to view gorillas. Clearly the link between successful conservation and the welfare status of local communities is not sufficiently established in the minds of consumers to influence their spending decisions. The challenges of effectively mobilising communities to protect biodiversity are discussed in the context of the variable impacts of integrated conservation and development programs over the last three decades. Direct payment payments for conservation services schemes are discussed as an innovative tool to add to the gamut of community approaches currently on offer. Payments for conservation schemes are viewed with cautious optimism in terms of their possibility for success. Despite their allure of being more economically and socially efficient at achieving welfare and conservation objectives, given the complex nature of any society, no less research in to social and economic dynamics of protected area use by local communities would be needed to ensure success of such schemes. However, the overwhelming majority of benefits form protected areas are tied up in ecosystem services values. Mechanisms to generate funding and distribute payments for these benefits in terms of offsetting the local opportunity costs are essential to change local behavior and reduce forest degradation and destruction.

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Moran, Dominic. "Investing in biological diversity : economic valuation and priorities for development". Thesis, University College London (University of London), 1997. http://discovery.ucl.ac.uk/1317651/.

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By all informed scientific accounts the world's biological diversity is currently in a critical condition. Biodiversity is vital for the continued existence of the global biosphere and, by extension, human wellbeing and development. It is inconceivable that a discipline predicated on the issues of scarcity and choice has nothing to contribute in terms of an understanding of either the causes and consequences of biodiversity loss, or in proposing solutions to the crisis. This thesis examines some of the economic parameters of the issue. Alongside the acknowledged root problems of market and institutional failure lies the question of economic valuation. Valuation of biodiversity puts conservation on a more level playing field with the economic forces which threaten its demise. Provided economic values can be appropriated (i.e. converted to flows of real economic resources) it becomes worthwhile for countries to invest in valuable biological assets. But the practice of economic valuation and the quantification of biodiversity are in their infancy and the complexity of the latter hinders the precise application of the former. Much of this thesis focuses on the use and development of the contingent valuation method (CV) as a flexible approach to valuing biodiversity. The method has a useful role to play in resource allocation, and, for valuing biological resources. Faced by the irreducible complexity of life which is the essence of biodiversity, CV does have its limitations. It is possible to conclude that existing valuation methods are a vital part of a "holding operation" alongside other surrogate approaches to setting priorities for global conservation. Nevertheless, the development of an interface between economic (preference-based) values, and biological values, which together can comprehensively inform conservation decisions remains the objective for the future.

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Crook, Carolyn. "Biodiversity prospecting agreements evaluating their economic and conservation benefits in Costa Rica and Peru /". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ58978.pdf.

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Omokanye, Akim Tunde, University of Western Sydney, of Science Technology and Environment College e Centre for Horticulture and Plant Sciences. "Biological and economic evaluation of maize-based cropping systems for Nigerian smallholders". THESIS_CSTE_HPS_Omokanye_A.xml, 2004. http://handle.uws.edu.au:8081/1959.7/797.

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Indigenous African shifting cultivation production systems, that were developed over many generations and took into account production potential as well as the constraints imposed by natural resources, are no longer practicable for Nigerian smallholder farmers. These systems relied on long fallow for fertility restoration after a period of cropping. Overpopulation has resulted in lower per capita land availability, necessitating a shift to sedentary cultivation systems. In such systems, fallow is short term (months) compared to shifting systems, where it lasted several years. This shift has resulted in overexploitation of land resources and despite intensification of agricultural production methods, non-sustainable demand on the natural resource base has increased and crop and animal production has declined. This study examined the performance of five maize-based cropping systems consisting of cereal-legume, cereal-cereal and cereal bare fallow rotations, to identify systems that have potential for increased agricultural production in the subhumid and mid-altitude zones of Nigeria. The study was conducted at Richmond, near Sydney, in NSW, Australia from 2000 to 2003. The trial investigated the effects of the combined use of legumes and N fertilizer in CSs to maintain or improve soil fertility, maize crop and maize storage silage production and yield and quality of all crop residues. This study showed that inclusion of a legume in the rotation is an important production and income generating strategy. Owing to their potential for increased maize productivity, to build up N-rich systems and to improve small holder levels of farm income, cropping systems with legumes should therefore be given more research attention in Nigeria
Doctor of Philosophy (PhD)

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Schelhas, John William Jr. "Socio-economic and biological aspects of land use adjacent to Braulio Carrillo National Park, Costa Rica". Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185452.

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Many national parks in lesser developed countries are threatened by adjacent human land uses. To meet both social and environmental needs, effective programs must be implemented to manage lands adjacent to national parks for conservation and development. This requires careful analysis of the socio-economic aspects of existing land use patterns and their implications for biological conservation. Research was undertaken adjacent to Braulio Carrillo National Park, Costa Rica. The biological integrity of the park depends on maintenance of natural habitats on lands adjacent to the lowland sector of the park. Existing lowland forest habitat adjacent to the park is rapidly being converted to pasture. Protecting the park's lowland biological resources depends on both stopping the influx of colonists into the area and encouraging land uses with biological conservation value outside the park. Both these issues are explored in detail. The rationale behind existing land uses in the region is discussed in relation to socio-economic variables identified from the literature on land use choice in Latin America. Large landholders generally engage in beef cattle ranching, frequently in association which land speculation. Small landholders prefer dairy cattle for cheese production is due to its low risk, stable markets, and the possibility of gradual and reversible entry. Smaller cattle operations use land more intensively, but by investing more labor appear to achieve sustainability. More intensive cash cropping is often combined with cattle to increase overall income. Timber production shows potential to partially replace cattle as an extensive, low risk land use. The impact of different adjacent land uses on park biological resources was assessed through a survey of biologists familiar with the region. The two land uses of greatest benefit to park resources were completely protected forest and natural forest management for timber production. The two land uses causing greatest harm to park resources were annual crops and pasture. Two management options for conservation and development adjacent to the park are proposed: (1) a forest buffer, and (2) a mosaic of different land uses, including pasture, perennial crops, and forest.

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Scarr, Lowell Martin. "Assessing the value of public investment into biological control research for invasive alien plants : the ARC PPRI Weeds Research Division". Thesis, Rhodes University, 2016. http://hdl.handle.net/10962/d1020604.

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This study investigates the economic impact of the ARC PPRI Weeds Research Division. The Division researches appropriate methods of biological control for invasive alien plants (IAPs). These plants pose an increasing threat to environmental integrity and ecosystem service provision impacting on economic potential. Since the work of the Division is considered a public good, a predominantly descriptive approach has been adopted for the valuation process. A combination of quantitative cost analysis and a qualitative study of the impacts of research and invasive alien plants is used to deal with the challenges associated with non-market valuation. The study found that investment into the Weeds Division is a valuable activity that supports the long-term growth potential of the South African economy. The role of a well-functioning environment is highlighted as an essential base for the creation of sustained growth opportunities in any society. It was determined that investment into the Division should be increased into the future to support efficient spending of scarce state funds. Biological control research was found to provide strategic future growth potential, creating opportunities for the development of a competitive advantage in the biotechnology and environmental management sectors. The study adds to the increasing move towards a more holistic view of economic valuation, taking factors other than pure finance and econometrics into consideration. This is an important shift in prevailing economic thought, as a realisation is reached that a single, or even triple, bottom line is an outdated and insufficient decision making basis.

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Van, der Westhuizen Robert Rolfe. "A genetic analysis of biological and economic efficiency of post-weaning feedlot performance in beef cattle". Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50249.

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Thesis (PhD (Agric))--University of Stellenbosch, 2005.
ENGLISH ABSTRACT: It is generally accepted that feed intake and growth (gain) are the most important economic components when calculating profitability in a growth test or feedlot. Feeding cost of animals is a major determinant of profitability in livestock production enterprises. Genetic selection to improve feed efficiency aims to reduce the cost of feeding in beef cattle production and thereby improve profitability. The objective of this study was to define a clear selection objective to enable South African beef breeders and especially the feedlot industry to select for post-weaning growth or feedlot performance and to identify factors influencing profitability in a feedlot environment. Because of the recording of individual feed intake and weight gain values in the South African Agricultural Research Councils' centralized growth tests, it was also possible to calculate a phenotypic value for feedlot profitability (R-value) for each bull tested in a centralized growth test. (Co)variances, using multitrait as well as random regression models, for and between feedlot profitability, weaning weight and other production, reproduction and efficiency traits were estimated. Residual feed intake (RFI) and feed conversion ratio (FCR) as efficiency traits were also compared to growth (average daily gain (ADG), weaning weight (WW) and shoulder height (SHD)), reproductive (scrotum circumference (SCR)) and profitability (feedlot profitability) traits measured in growth tests of young Bonsmara bulls. Consequently, a single post-weaning growth selection index value based on the economic and breeding values of different selection criteria related to feedlot profitability was composed. (Co)variance components, heritabilities and genetic correlations for and between initial weight (lW), final weight (FW), total feed intake (FI) and shoulder height (SHD) were estimated through the use of multitrait restricted maximum likelihood (REML) procedures. These breeding values (EBV s) were then used in a selection index to calculate a single economical value for each animal. This economical value is an indication of the gross profitability value or gross test value (GTV) of the animal in a post-weaning growth test. The heritability estimate of 0.36 for R-value, obtained from the multitrait analysis, shows that this trait is genetically inherited and that it can be selected for. The heritability for R-value obtained from the single trait random regression model varied between 0.57 and 0.62. The genetic correlations between the R-value and the other traits, obtained from the multitrait analysis, varied from negligible to high. The heritability estimated for FCR was 0.34 and for RFl 0.31 with a genetic correlation estimate of 0.75 between the traits. The estimated genetic correlation between profitability (R-value) and FCR and RFl were -0.92 and -0.59, respectively. The genetic correlation estimate of -0.92 between FCR and R-value is largely due to the part-whole relationship between these two traits. This is also shown in their genetic trends. The genetic correlations and expected correlated responses between RFl and FCR with R-value suggest that indirect selection for R-value through the direct selection for FCR and/or RFl will result in slower genetic progress in Rvalue than direct selection for R-value. However, where the R-value cannot be calculated and/or where direct selection for R-value is not possible, it would be better to select indirectly for R-value through the use of FCR rather than RF!. Consequently, a regression equation was developed (with an R2 of 0.82) to estimate a feed intake value for all performance-tested Bonsmara bulls which were group fed and whose feed intakes were unknown. These predicted feed intake values made it possible to calculate a feedlot or post-weaning growth profitability value (R-value) for all tested bulls even where individual feed intakes were unknown. Subsequently, an R-value for each bull was calculated in a favourable economic environment (FEE), an average economic environment (AEE) and in an unfavourable economic environment (VEE). The high Pearson and Spearman correlations between the EBV s based on AEE and the other two environments suggested that the average economic environment could be used to calculate EBVs for R-value or feedlot growth profitability. It is therefore not necessary to change the carcass, weaner or feed price on a regular basis to account for possible re-rankings based on R-value EBVs. Heritabilities for lW, FW, Fl and SHD were 0.41, 0.40, 0.33 and 0.51, respectively. The highest genetic correlations between these traits were the 0.78 (between lW and FW) and 0.70 (between Fl and FW). GTV values varied between -R192.l7 and R231.38, with an average of R9.31. The Pearson correlations between EBVs (for production and efficiency traits) and GTV range from -0.51 to 0.68. The lowest correlation (closest to zero) was 0.26 between the Kleiber ratio (KLB) and GTV. Correlations of 0.68 and -0.51 were estimated between average daily gain (ADG) and GTV and feed conversion ratio (FCR) and GTV, respectively. The heritabilities of the different traits included in the selection index suggest that it is possible to select for a GTV. The selection index can benefit feedlotting In selecting offspring of bulls with high GTV values to maximize profitability. The Pearson and Spearman correlations between the R-value EBVs and the index values (GTV) were very high (0.97). This high correlation of 97% indicates that it is not important which method is used to calculate a genetic post-weaning growth of feedlot profitability value. The selection index value is, however, more simplified than the feedlot profitability with less assumption. Therefore, it is recommended that the post-weaning selection index value be used as a selection objective in breeding programmes to improve post-weaning growth profitability rather than the more complex feedlot profitability value.
AFRIKAANSE OPSOMMING: 'N GENETIESE ANALIESE VAN DIE BIOLOGIESE EN EKONOMIESE DOELTREFFENTHEID VAN NASPEENSE GROEI IN VLEISBEESTE IN DIE VOERKRAAL: Dit word algemeen aanvaar dat voerinname en groei die twee ekonomies mees belangrike komponente in die berekening van 'n naspeense groei- of voerkraalwinsgewindheidswaarde is. Voerkostes is 'n bepalende faktor van winsgewindheid in enige lewendehawe boerderypraktyk. Seleksie om voerdoeltreffendheid te verbeter, verminder dus die voerkostes in vleisbeesproduksie en gevolglik 'n verhoging in die winsgewindheid. Die doelwit van die studie was om faktore te identifiseer wat 'n invloed op winsgewindheid in die voerkraaiomgewing het asook om 'n duidelike seleksiedoelwit te formuleer wat die Suid- Afrikaanse vleisbeesteiers en veral die voerkraalbedryf instaat sal kan stelom vir naspeense groeidoeltreffendheid ofvoerkraalwinsgewindheid te selekteer. As gevolg van die aantekening en rekordhouding van weeklikse individuele voennnames en gewigstoenames van alle prestasiegetoetsde bulle, in 'n gesentraliseerde groeitoets deur die Suid- Afrikaanse Landbou Navorsingsraad getoets, was dit moontlik om vir elk van hierdie bulle 'n fenotipiese voerkraalwinsgewindheidswaarde (R-waarde) te kon bereken. (Ko)variansies is vir en tussen voerkraalwinsgewindheid, speengewig en ander produksie-, reproduksie- en doeltreffendheidseienskappe bereken deur van meereienskap en ewekansige regressie modelle gebruik te maak. Twee doeltreffendheidseienskappe naamlik residuele voerinname (RFI) en voeromsetverhouding (FCR) is ook met groei (gemiddelde daaglikse toename (ADG), speengewig (WW) en skouerhoogte (SHD)), reproduksie (skrotumomvang (SCR)) en winsgewindheidseienskappe (voerkraalwinsgewindheid (R-waarde)) vergelyk, om sodoende te bepaal watter een die mees geskikte eienskap is om indirek vir voerkraalwinsgewindheid of groei, gebaseer op teeltwaardes en ekonomiese waardes vir die verskillende eienskappe, wat 'n invloed op naspeense groei winsgewindheid het, gestruktueer. (Ko)variansiekomponente, oorerflikhede en genetiese korrelasies vir en tussen begingewig (lW), eindgewig (FW), voerinname (FI) en skouerhoogte (SHD) is bereken deur van 'n meereienskap (REML) ontleding gebruik te maak. Hierdie teelwaardes (EBVs) is vervolgens in 'n seleksie-indeks gebruik om 'n enkele ekonomies of voerkraal-winsgewindheids seleksie-indekswaarde (GTV) vir elke dier te bereken. Hierdie ekonomiese waarde is 'n aanduiding van die bruto winsgewindheidswaarde ofbruto toetswaarde (GTV) van die dier in 'n naspeentoets. Die oorerflikheid, vanuit die meereienskapontleding vir R-waarde beraam, was 0.36. Hierdie oorerflikheid dui daarop dat die eienskap oorerflik is en dat dit wel moontlik is om daarvoor te selekteer. Die ooreflikhede van R-waarde, voorspel vanuit die enkeleienskap ewekansige regressieontleding varieer tussen 0.57 en 0.62. Die genetiese korrelasie tussen R-waarde en ander eienskappe, vanuit die meereienskap ontleding beraam, varieer tussen weglaatbaar klein tot hoog. Die oorerflikheid van FeR was 0.34 en van RFI 0.31 met 'n genetiese korrelasie van 0.75 tussen die twee eienskappe. Die genetiese korrelasie tussen R-waarde en FeR, en R-waarde en RFI was onderskeidelik -0.92 en -0.59. Die rede vir die hoë negatiewe genetiese korrelasie tussen R-waarde en FeR van -0.92 is omdat dieselfde komponente in die berekening van die twee eienskappe gebruik is. Dit word ook in die genetiese tendense weerspeël. Die genetiese korrelasies en verwagte gekorreleerde responsies tussen R-waarde en FeR, en tussen R-waarde en RFI dui daarop dat stadiger genetiese vordering verkry sal word in R-waarde deur direkte seleksie vir beide FeR en RFI as wat verkry sal word deur die direkte seleksie vir R-waarde. Wanneer 'n R-waarde egter nie bereken kan word nie of waar dit nie moontlik is om direk vir R-waarde te selekteer nie, sal vinniger genetiese vordering in R-waarde gemaak word deur die direkte seleksie vir FeR as vir RF!. 'n Regressievergelyking is geformuleer (met 'n R2 van 0.82) om vir alle prestasiegetoetsde bulle, waar bulle in 'n groep gevoer is en individuele voerinnames onbekend is, 'n voerinnamewaarde te voorspel. Hierdie voorspelde voerinnames maak dit moontlik om vir elke prestasiegetoetsde bul ,'n naspeengroei- of voerkraalwinswaarde (R-waarde) te bereken, al is hulle individuele voerinnames onbekend. Vervolgens is drie verskillende R-waarde vir vleisproduksie vir elke bul bereken naamlik, in 'n gunstige ekonomiese omgewing (FEE), 'n gemiddelde ekonomiese omgewing (AEE) en 'n ongunstige ekonomiese omgewing (VEE). Die hoë Pearson en Spearman korrelasies tussen die EBVs vir R-waarde, bereken in die AEE en die EBVs in die ander twee ekonomiese omgewings, dui daarop dat die AEE gebruik kan word om EBVs vir naspeense groeiof voerkraalwins te bereken. Dit is dus nie nodig om op 'n gereelde grondslag die karkasprys, lewendige speenkalfprys of die voerprys te verander nie. Oorerflikhede, vanuit die meereienskap ontledings VIr lW, FW, FI en SHD verkry, was onderskeidelik 0.41, 0.40, 0.33 en 0.51. Die hoogste genetiese korrelasies tussen die eienskappe was 0.78 tussen lW en FW en 0.70 tussen FI en FW. GTV indekswaardes varieer tussen -Rl92.17 en R231.38 met 'n gemiddelde waarde van R9.31. Die Pearson korrelasies tussen die EBVs van produksie- en doeltreffenheidseienskappe en GTV het tussen -0.51 en 0.68 gevarieer. Die korrelasie naaste aan zero, van 0.26, was die korrelasie tussen GTV en die Kleiber-verhouding. Die korrelasies tussen GTV en ADG, en GTV en FeR was onderskeidelik 0.68 en -0.51. Die oorerflikhede van die verskillende eienskappe wat in die seleksie-indeks ingesluit is, dui daarop dat die indekswaarde weloorerflik is en dat seleksie hiervoor wel moontlik is. Hierdie indekswaarde kan deur die voerkraaiindustrie gebruik word om nageslag van diere met hoë GTV waardes te selekteer om sodoende maksimum wins uit die voerkraai te genereer. Die Pearson en Spearman korrelasies tussen R-waarde EBVs en die indekswaardes (GTV) was besonder hoog (0.97). Hierdie hoë korrelasie dui daarop dat dit geen verskil sal maak watter een van die twee metodes gebruik word in die berekeninge van 'n naspeense groei- of voerkraalwinswaarde nie. Die seleksie-indeks metode is egter minder gekompliseerd met minder aannames as in die geval van die rekeningkundige fenotipiese benadering (R-waarde). As gevolg hiervan, word die naspeense seleksie-indeks waardes (GTV) aanbeveel om te gebruik as 'n teeldoelwit in telingsprogramme om naspeense groei- of voerkraaiwins geneties te verbeter, eerder as die meer gekompliseerde fenotipiese voerkraaiwins (R-waardes) metode.

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Gaika, Lindiwe. "Adequacy of existing protected areas in conserving biodiversity at global and regional levels in relation to socio-economic conditions". Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9646_1254305009.

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At a meeting of worl leaders at the United Nations Conference on Environment and Development in Rio de Janeiro in 1992, it was recognized that because of the tremendous increase in the size of the global populations (which now is estimated to exceed six billion), there were concerns that global biodiversity was at risk if insufficient land were not put aside for conservation within formal Protected Areas. The primary aim of this study was to compare investment in Protected Areas in relation to socio-economic conditions at global and regional levels.

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Olstorpe, Matilda. "Feed grain improvement through biopreservation and bioprocessing : microbial diversity, energy conservation and animal nutrition aspects /". Uppsala : Dept. of Microbiology, Swedish University of Agricultural Sciences, 2008. http://epsilon.slu.se/200877.pdf.

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Pearce, David W. The economic value of biodiversity. London: Earthscan, 1994.

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International Union for Conservation of Nature and Natural Resources., a cura di. Economics and biological diversity: Developing and using economic incentives to conserve biological resources. Gland, Switzerland: International Union for Conservation of Nature and Natural Resources, 1988.

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Paulo A. L. D. Nunes. The ecological economics of biodiversity: Methods and applications. Cheltenham, UK: Edward Elgar, 2003.

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Kothari, Ashish. Understanding biodiversity: Life, sustainability, and equity. New Delhi: Orient Longman, 1997.

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Biodiversity, Organisation for Economic Co-operation and Development Expert Group on Economic Aspects of. Economic incentive measures for the conservation and sustainable use of biological diversity: Conceptual framework and guidelines for case studies. Paris: Organisation for Economic Co-operation and Development, 1994.

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G, Willis K. Towards a methodology for costing biodiversity conservation in the UK: A report to the Department of the Environment. London: HMSO, 1996.

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Organisation for Economic Co-operation and Development., a cura di. Investing in biological diversity: The Cairns Conference : proceedings of the OECD International Conference on Incentive Measures for the Conservation and the Sustainable Use of Biological Diversity in Cairns, Australia, 25-28 March 1996. Paris, France: Organisation for Economic Co-operation and Development, 1997.

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Vickerman, Sara. National stewardship incentives: Conservation strategies for U.S. landowners. Washington, D.C: Defenders of Wildlife, 1998.

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Shiva, Vandana. Globalization's new wars: Seed, water & life forms. New Delhi: Women Unlimited, 2005.

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Seminar Tantangan dan Prospek Hayati Dalam Meningkatkan Ketahanan Ekonomi Nasional (1993 Bandung, Indonesia). Prosiding Seminar Tantangan dan Prospek Hayati Dalam Meningkatkan Ketahanan Ekonomi Nasional, 30 Juni & 1 Juli 1998. Bandung: Diterbitkan atas kerjasama LP-ITB, LPM-ITB, [dan] PPAU Ilmu Hayati LP-ITB, 1998.

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Wild, James R., Janet K. Grimsley, Karen M. Kedzie e Melinda E. Wales. "From Biological Diversity to Structure-Function Analysis: Protein Engineering in Aspartate Transcarbamoylase". In Chemical Aspects of Enzyme Biotechnology, 95–109. Boston, MA: Springer US, 1990. http://dx.doi.org/10.1007/978-1-4757-9637-7_9.

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Barrett, Scott. "Optimal economic growth and the conservation of biological diversity". In Economics and Ecology, 130–45. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1518-6_8.

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Papadopoulos, Nikos T. "Fruit Fly Invasion: Historical, Biological, Economic Aspects and Management". In Trapping and the Detection, Control, and Regulation of Tephritid Fruit Flies, 219–52. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-017-9193-9_7.

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Auld, Bruce A. "Economic Aspects of Biological Weed Control with Plant Pathogens". In Microbial Control of Weeds, 262–73. Boston, MA: Springer US, 1991. http://dx.doi.org/10.1007/978-1-4615-9680-6_14.

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Williams, Stacey M., Milena Benavides-Serrato, Jose E. García-Arrarás, Edwin A. Hernández-Delgado e Ruber Rodríguez-Barreras. "Review of Echinoderm Research in Puerto Rico, with the Focus on Biological and Ecological Aspects". In Echinoderm Research and Diversity in Latin America, 437–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-20051-9_14.

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Kakui, Keiichi. "Review of the Taxonomy, Diversity, Ecology, and Other Biological Aspects of Order Tanaidacea from Japan and Surrounding Waters". In Species Diversity of Animals in Japan, 603–27. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56432-4_23.

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Lawton, John H. "The Role of Species in Ecosystems: Aspects of Ecological Complexity and Biological Diversity". In Biodiversity, 215–28. New York, NY: Springer New York, 1997. http://dx.doi.org/10.1007/978-1-4612-1906-4_13.

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Wolfrum, Rüdiger. "The Convention on Biological Diversity: Using State Jurisdiction as a Means of Ensuring Compliance". In Enforcing Environmental Standards: Economic Mechanisms as Viable Means?, 373–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61144-5_14.

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Ødegaard, Hallvard. "Economic and Ecological Aspects of Wastewater Treatment with Biological and Chemical Means". In Chemical Water and Wastewater Treatment IV, 329–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61196-4_31.

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Hahn, Hermann H. "Economic and Ecological Aspects of Wastewater Treatment with Biological and Chemical Means". In Chemical Water and Wastewater Treatment IV, 333–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-61196-4_32.

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Atti di convegni sul tema "Biological diversity – Economic aspects"

Lanovaya, T. V. "Units Reflecting The Geographic And Biological Diversity Of The Region: Linguoculturological Aspect". In II International Conference on Economic and Social Trends for Sustainability of Modern Society. European Publisher, 2021. http://dx.doi.org/10.15405/epsbs.2021.09.02.44.

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Badamdorj, B. "DIVERSITY OF INSECTS AND OTHER ARTHROPODS IN MONGOLIA". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-5.

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The insect fauna of Mongolia includes about 12,000 species belonging to 24 orders. The only order, Orthoptera, is richer in species in Mongolia than in the Far East of Russia. All other units show greater diversity in the Russian Far East than in Mongolia. There are a significant number of very interesting endemics. Tizanuras of the family Machilidae are relic insects, represented by five species in Mongolia. As examples of widespread Central Asian insects, a number of species of darkling beetles and weevils can be indicated, most of which are endemic to Mongolia or Central Asia.

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Tshernyshev, S. E. "EVOLUTION POTENTIAL OF EOCENE ENTOMOFAUNAS IN FORMATION OF CONTEMPORARY DIVERSITY OF COLEOPTERA OF THE FAMILIES MALACHIIDAE AND DASYTIDАЕ SENSU LATUM". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-45.

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Data on Dasytidae and Malachiidae beetles recorded from Eocene fossils are presented, evolution potential of the ancestral faunas of two families is discussed. It is show that the younger family Malachiidae appear to possess more evolutionary potential in comparison with closely related Dasytidae being more conservative in taxonomic formation.

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Hartmann, M., e S. E. Tshernyshev. "EDUCATIONAL AND SCIENTIFIC PERSPECTIVES OF NATURAL HISTORY MUSEUMS IN GENERATION OF NATURAL HERITAGE KNOWLEDGE AND PRESERVATION OF BIOLOGICAL DIVERSITY VOUCHERS". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-49.

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Natural History Museums continue to play a significant role as centres for educational and scientific activity of society; as new types of research potentially evolve in the future, the importance of such Museums does not diminish but only increases. The educational and scientific perspectives of natural history museums in generating knowledge of natural heritage and preserving biological diversity vouchers, have great importance and will be in increasing demand at the nearest future. All scientists working on natural profiles and environmental change are strongly recommended to pay special attention to Museum collections, visit them and help their progress to any extent possible.

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Chenikalova, E. V., e V. A. Kolomytseva. "BIOLOGICAL FEATURES OF THE COTTON MOTH UNDER THE CONDITIONS OF WARMING CLIMATE". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-44.

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The cotton bollworm is one of the most important polyphagous pests of agricultural crops with a wide range and food connections. The increase in the number of the pest, the development of additional facultative generations, the expansion of its range to the north to the forest-steppe zone of Russia, as well as the rise to the Caucasus mountains, occurring in the current period, is due to climate warming and a number of agro-ecological reasons. Measures are proposed to regulate the number of pests, aimed at preserving the biotic and floristic diversity of agricultural landscapes.

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Hamouda, Amr, A. V. Simakova, J. S. Noskov, I. B. Babkina, R. T.-o. Baghirov e D. I. Gorn. "STRUCTURE AND DYNAMICS OF ZOOPLANKTON OF THE EASTERN MEDITERRANEAN (MATRUCH PROVINCE, EGYPT)". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-42.

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The species diversity of zooplankton in the Eastern Mediterranean (Matruh province, Egypt) is represented by 21 species, 17 of which are holoplankton and 4 are meroplankton. The tendency of an increase in the number of species and the number of copepods from the summer period (5 species) to the winter period (10 species) was noted.

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Algyyak, Sh V., E. Yu Subbotina e Yu V. Maksimova. "FUNGUS GNATS (DIPTERA, SCIAROIDEA, excl. SCIARIDAE) LARCH FOREST OF TUVA". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-1.

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The fauna of fungus gnats of larch forests of the Tyva Republic is 243 species from 40 genera of 3 families. A unique feature of the fauna is the significant role of representatives of the genus Mycomya, which rank second in diversity after the genus Mycetophila. Comparison of the taxonomic structure of the fauna of the larch forests of Tuva shows the greatest similarity with the fauna of fungus gnats of the dark coniferous taiga of the Kuznetsk Alatau.

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Prokhorova, E. E., e R. R. Usmanova. "GENETIC POLYMORPHISM OF SNAILS SUCCINEA PUTRIS (GASTROPODA, PULMONATA)". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-33.

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Genotypic diversity of snails Succinea putris L. (Linnaeus, 1758) collected in the north-west of Russia and in the Republic of Belarus was analysed. Homology between the nucleotide sequences of snails from different population made up 100% by the nucleotide sequence of ITS1-5.8S-ITS2 region of rDNA. Genetic variability based on mitochondrial markers was insignificant. Average genetic distances between samples made up 0,009 for СOI gene loci and 0.008 for CytB gene loci. Was found ten haplotypes of the mitochondrial gene CytB and nine haplotypes of the mitochondrial gene СOI. Perhaps the genetic homogeneity of snails S. putris found in the study explains a low variability of their parasites, trematodes from the genus Leucochloridium.

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Ostroverkhova, N. V. "DARK FOREST BEE APIS MELLIFERA MELLIFERA L. IN SIBERIA: CURRENT STATE AND WAYS OF POPULATION CONSERVATION". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-56.

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Screening studies of the honey bee in Siberia made it possible to identify the dark forest bee Apis mellifera mellifera populations in the Tomsk region, Krasnoyarsk and Altai territories, and the Altai Republic. A comparative analysis of the genetic diversity of the dark forest bee populations of Siberia, the Urals and Europe, carried out according to the data of the molecular genetic study of the mitochondrial and nuclear genomes, suggests the existence of the Siberian ecotype of the Middle Russian breed. The studied bee colonies are characterized by a high adaptive potential (high degree of "acclimatization") and good economically significant indicators. To preserve the gene pool of the Middle Russian breed of Siberian populations, monitoring studies, ecological and genetic analysis of bee colonies as well as selection and breeding work in the Tomsk bee farm are carried out.

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Khusainov, R. V. "CEPHALOBID NEMATODES (NEMATODA: CEPHALOBIDAE) IN AGROCENOSIS OF THE CENTRAL-EUROPEAN PART OF RUSSIA". In V International Scientific Conference CONCEPTUAL AND APPLIED ASPECTS OF INVERTEBRATE SCIENTIFIC RESEARCH AND BIOLOGICAL EDUCATION. Tomsk State University Press, 2020. http://dx.doi.org/10.17223/978-5-94621-931-0-2020-43.

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Investigations of fauna of cephalobid nematodes from field agrocenosis were carried from the territory of the Central-European part of Russia in 2016–2018. In total ten genera of the family Cephalobidae were found. Nematodes of genus Acrolobus (A. emarginatus) has been reported in Russia for the first time. Chiloplacus and Eucephalobus nematodes were presented by the most species diversity. Nematodes of genera Cephalobus and Eucephalobus founded in the samples constantly (93 & 90% samples respectively). The second by frequency of occurence was taken species from genera Acrobeloides and Chiloplacus (86 & 75% samples). Acrobeles spp. and Cervidellus spp. detected in almost half of the soil samplies (57 & 48%). Acrolobus and Heterocephalobus nematodes were most rarely discovered genus (24 & 16%). Acroucrainicus and Stegelletina nematodes founded in agrocenosis singly and only in the territory of the Chernozem Region. Species of genera Acrolobus and Heterocephalobus were registered into the roots generally, while of the rest cephalobid genera were founded both in soil and into damaged or necrotic roots.

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Rapporti di organizzazioni sul tema "Biological diversity – Economic aspects"

Rajarajan, Kunasekaran, Alka Bharati, Hirdayesh Anuragi, Arun Kumar Handa, Kishor Gaikwad, Nagendra Kumar Singh, Kamal Prasad Mohapatra et al. Status of perennial tree germplasm resources in India and their utilization in the context of global genome sequencing efforts. World Agroforestry, 2020. http://dx.doi.org/10.5716/wp20050.pdf.

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Tree species are characterized by their perennial growth habit, woody morphology, long juvenile period phase, mostly outcrossing behaviour, highly heterozygosity genetic makeup, and relatively high genetic diversity. The economically important trees have been an integral part of the human life system due to their provision of timber, fruit, fodder, and medicinal and/or health benefits. Despite its widespread application in agriculture, industrial and medicinal values, the molecular aspects of key economic traits of many tree species remain largely unexplored. Over the past two decades, research on forest tree genomics has generally lagged behind that of other agronomic crops. Genomic research on trees is motivated by the need to support genetic improvement programmes mostly for food trees and timber, and develop diagnostic tools to assist in recommendation for optimum conservation, restoration and management of natural populations. Research on long-lived woody perennials is extending our molecular knowledge and understanding of complex life histories and adaptations to the environment, enriching a field that has traditionally drawn its biological inference from a few short-lived herbaceous species. These concerns have fostered research aimed at deciphering the genomic basis of complex traits that are related to the adaptive value of trees. This review summarizes the highlights of tree genomics and offers some priorities for accelerating progress in the next decade.

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Sultana, Munawar. Culture of silence: A brief on reproductive health of adolescents and youth in Pakistan. Population Council, 2005. http://dx.doi.org/10.31899/pgy19.1006.

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Previous research on the reproductive health of adolescents and youth in Pakistan has not addressed the diversity of adolescent experiences based on social status, residence, and gender. To understand the transition from adolescence to adulthood more fully, it is important to assess social, economic, and cultural aspects of that transition. This brief presents the experience of married and unmarried young people (males and females) from different social strata and residence regarding their own attitudes and expectations about reproductive health. More young people aged 15–24 live in Pakistan now than at any other time in its history—an estimated 36 million in 2004. Recognizing the dearth of information on this large group of young people, the Population Council undertook a nationally representative survey from October 2001 to March 2002. The analysis presented here comes from Adolescents and Youth in Pakistan 2001–02: A Nationally Representative Survey. The survey sought information from youth aged 15–24, responsible adults in the household, and other community members in 254 communities. A total of 6,585 households were visited and 8,074 young people were interviewed.

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