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Dissertations / Theses on the topic 'Species importance'

Author: Grafiati

Published: 6 September 2023

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1

Bell, Claire L. "The measurement of radical species of atmospheric importance." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:14933fc6-5272-45b0-a281-6da35c6e42e8.

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The measurement of radical species in the atmosphere has far reaching implications. For example, it is necessary to both understand and improve our knowledge of radicals in the atmosphere to better inform the models which in many cases are the best way of predicting future air quality and climate change. Although many of these models are often not fully representative of all the processes occurring, they are the current best estimate based on the knowledge available, and can be useful in informing and directing future policy. The numerous, varied and interlinked cycles in the atmosphere are co

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2

Heard, Anne C. "Gas-phase reactions of halogen species of atmospheric importance." Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293474.

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3

Hiley, Jonathan Richard. "The importance of protected areas for species undergoing distribution changes." Thesis, University of York, 2017. http://etheses.whiterose.ac.uk/18782/.

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The value of Protected Areas for wildlife will diminish if the species for which they were originally designated are pushed out of their boundaries by changing temperatures, or if they are infiltrated by invasive species that are harmful to native species. Here, I assess the performance of Protected Areas against this background of distributional change. I found that Protected Areas have facilitated the range expansions of the six wetland bird species that have recently colonised the UK, both as sites at which breeding first occurs and as locations where substantial populations can establish b

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4

Wagner, Kirtsen. "Laboratory studies of halogen-containing and organic species of atmospheric importance." Thesis, University of Oxford, 2003. https://ora.ox.ac.uk/objects/uuid:f6009882-ad3e-4627-848d-1042c7d5e72a.

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This thesis describes laboratory studies of the kinetics of some reactions of atmospheric significance. The species of interest were Cl atoms, IO radicals and several organic compounds. In particular, the chemistry of acetone and the acetonylperoxy radical was investigated. These species are of importance in the troposphere and the stratosphere, where they may influence the concentrations of HO<sub>x</sub>, NO<sub>x</sub> and O<sub>3</sub>. The experiments were performed using low-pressure discharge-flow tubes coupled to a variety of detection techniques, including conventional methods such as

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5

Sanon, Hadja Oumou. "The importance of some Sahelian browse species as feed for goats /." Uppsala : Dept. of Animal Nutrition and Management, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200784.pdf.

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6

D'Souza, Richard Joseph. "The importance of reactive oxygen species in determining mesangial cell growth." Thesis, St George's, University of London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283240.

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7

Forgus, Juan-Jacques. "Functional importance of snakes in a strandveld ecosystem." University of the Western Cape, 2018. http://hdl.handle.net/11394/6449.

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Magister Scientiae (Biodiversity and Conservation Biology) - MSc (Biodiv & Cons Biol)<br>Gaps in our knowledge of the functional roles of snakes within ecosystems limit our ability to predict the potentially cascading effects their removal from an ecosystem might create. Extirpation of snake species could potentially result in losses of ecosystem functionality if those taxa are ecologically unique. I used pitfall and funnel trap arrays, artificial cover object surveys, active searching, and passive camera trapping, as well as pre-existing faunal diversity data to identify terrestrial tetrapod

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8

Flugge, Mark. "Laboratory studies of reactions of nitrate radicals with species of atmospheric importance." Thesis, University of Oxford, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.413082.

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9

Green, Timothy J. "A study of chlorine oxide species of potential importance in the stratosphere." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390458.

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10

Jackson, Emma Louise. "Importance of seagrass beds as a habitat for fishery species around Jersey." Thesis, University of Plymouth, 2003. http://hdl.handle.net/10026.1/521.

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Ware, Suzanne Jane. "The importance of inshore areas on the west coast of Scotland as nursery grounds for commercially important fish species." Thesis, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422344.

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12

Mangan, Scott A. "Importance of the species composition of arbuscular mycorrhizal fungi to tropical tree seedlings." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3243802.

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Thesis (Ph.D.)--Indiana University, Dept. of Biology, 2007.<br>Title from PDF t.p. (viewed Nov. 18, 2008). Source: Dissertation Abstracts International, Volume: 67-12, Section: B, page: 6842. Adviser: James D. Bever.

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13

Kamenos, Nicholas Andreas. "The importance of maerl grounds as nursery areas for commercially important species with emphasis on the Queen scallop (Aequipecten operucularis)." Thesis, University of London, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407672.

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14

Pigott, David Michael. "Mapping the global distribution of zoonoses of public health importance." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:962dc1a7-c6c1-4878-ab6f-94dcebf7b1e1.

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Medical cartography can provide valuable insights into the epidemiology and ecology of infectious diseases, providing a quantitative representation of the distribution of these pathogens. Such methods therefore provide a key step in informing public health policy decisions ranging from prioritising sites for further investigation to identifying targets for interventions. By increasing the resolution at which risk is defined, policymakers are provided with an increasingly informed approach for considering next steps as well as evaluating past progress. In spite of their benefits however, global

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15

Schneider, Lea Dominique. "Conservation ecology of the thick-shelled river mussel Unio crassus : The importance of parasite-host interactions." Doctoral thesis, Karlstads universitet, Institutionen för miljö- och livsvetenskaper, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-47636.

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Unionoid mussels are globally threatened and their conservation requires species-specific knowledge on their ecology and parasite-host interaction. Unio crassus is one of Europe’s most threatened unionoid species and has a temporary obligate parasitic life stage (glochidia) on fish. A lack of suitable hosts is probably a major limitation for mussel recruitment, but host species composition, suitability and availability in time and space have yet to be fully explored. This thesis examines different aspects of the host fish species, including their composition, suitability and ecological importa

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16

Keller, Michael. "The importance of seed source in programmes to increase species diversity in arable systems /." Zürich, 1999. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=13117.

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17

Beattie, Sally Heather. "Incidence and importance of Bacillus species in raw milk and in the dairy environment." Thesis, University of Glasgow, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363155.

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18

Gray, Alicia E. "Importance and Spatial Distribution of Phytophthora Ramorum Host Species in a Coast Redwood Forest." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500168/.

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Phytophthora ramorum, an exotic forest pathogen known as ‘sudden oak death’ (SOD), has received considerable attention in recent years because of its effects on vegetation structure, composition, and fire disturbance regimes in western U.S. coastal forests. This research examines differences in the importance (e.g., density, dominance, and frequency) and distribution of five host species of P. ramorum–– Umbellularia californica (California bay laurel), Quercus agrifolia (coast live oak), Pseudotsuga menziesii (Douglas fir), Sequoia sempervirens (Coast redwood), and Arbutus menziesii (Madrone)–

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19

Rosendale, Andrew J. "Importance of Facilitative Urea Transporters in Anuran Osmoregulation." Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1313089167.

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20

Bovy, Helene C. "Understanding and predicting impacts of invasive species : the importance of intraspecific variation and interspecific interactions." Thesis, Queen's University Belfast, 2015. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680498.

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Biological invasions continue to alter the structure and functioning of ecosystems worldwide. While the vectors and pathways of establishment of Invasive species are understood, predicting the ecological changes, or impacts, these species can exert on recipient ecosystems is lacking. Using invasive freshwater amphipods as models, this thesis aimed to investigate the role of intraspecific variation and interspecific interactions in understanding and predicting invasive species' impacts. This work first looks at the inherent variation in feeding behaviour within and between populations of an inv

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21

Massey, Daniel J. "Determining the Clinical Importance of an Unknown Species of Scorpion (Centruroides) Collected in New Mexico." The University of Arizona, 2010. http://hdl.handle.net/10150/623753.

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Class of 2010 Abstract<br>OBJECTIVES: To determine the clinical significance of a population of scorpions, C. sculpturatus, found in New Mexico. This includes the toxicity of the venom as well as the interactions of venom and antivenom. METHODS: This project will include a descriptive retrospective study of clinical and laboratory data obtained through a patient chart and analytical laboratory procedures to positively identify the species of scorpion responsible for the envenomation. Scorpion Collection Scorpions from the location of the reported sting will be collected for venom analysis. S

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22

Tavares, Joana Flor R. "Assessing the importance of biological uncertainties to the control of species introductions via ballast water /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 90 p, 2009. http://proquest.umi.com/pqdweb?did=1654487631&sid=3&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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23

Löfqvist, Zandra. "The importance of vegetation height and flower abundance for Swedish butterfly species in semi-natural grasslands." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108670.

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Changed management of semi-natural grasslands is thought to be one important factor for explaining the decline of butterfly populations in Sweden and the rest of Europe. This study explores how vegetation height, variation in vegetation height and flower abundance can help predict the occurrence of butterfly species in semi-natural grasslands in southern Sweden. My study is based on data collected by a national environmental monitoring programme (NILS) during 2006-2010. Generalized linear models showed that all three explanatory variables significantly affected 26 of the 41 species of butterfl

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24

Saito, Naoki. "Studies on CD1d-NKT system conserved among species : importance of primate models for human disease analysis." Kyoto University, 2007. http://hdl.handle.net/2433/136438.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(人間・環境学)<br>甲第13167号<br>人博第374号<br>新制||人||91(附属図書館)<br>18||D||175(吉田南総合図書館)<br>UT51-2007-H440<br>京都大学大学院人間・環境学研究科相関環境学<br>(主査)教授小松賢志, 助教授三浦智行, 助教授倉橋和義<br>学位規則第4条第1項該当

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25

Fondom, Nicolas Yebit. "PHYSIOLOGICAL AND BIOCHEMICAL ADAPTATIONS IN SOME CAM SPECIES UNDER NATURAL CONDITIONS: THE IMPORTANCE OF LEAF ANATOMY." Oxford, Ohio : Miami University, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1260552594.

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26

Maire, Eva. "Socio-ecological drivers of fish biomass on coral reefs : the importance of accessibility, protection and key species." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG027/document.

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Les récifs coralliens hébergent la plus grande biodiversité sur Terre et fournissent la nourriture, le revenu économique, la protection côtière et les valeurs culturelles pour des millions de personnes. L'accessibilité des écosystèmes via les réseaux routiers est un déterminant majeur de leurs conditions, les écosystèmes les plus accessibles étant les plus menacées. Longtemps, l’estimation de l'accessibilité par l’Homme s’est limitée à l'utilisation de la distance linéaire qui ignore l’irrégularité des côtes maritimes et les réseaux routiers, facteurs influençant le temps nécessaire pour attei

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27

Abubakar, Mohamed Rania. "Tracing a compound with ecological importance for Ficus species and profiling the chemical constituents of Ficus obtusifolia." Thesis, Uppsala universitet, Avdelningen för farmakognosi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-434985.

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28

Francis, Matthew D. "Interspecific Competition Between Hygrophila polysperma and Ludwigia repens, Two Species of Importance in the Comal River, Texas." Thesis, University of North Texas, 1999. https://digital.library.unt.edu/ark:/67531/metadc278133/.

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Hygrophila polysperma is a plant native to Asia that has been introduced into the Comal River, TX and is thriving while Ludwigia repens, a species native to the river appears to be declining. Both plants have similar morphologies and occupy similar habitats in the river. Two plant competition experiments were conducted to examine the competitive interactions between the two species. First, an experimental design was developed in which established Ludwigia plants were 'invaded' by sprigs of Hygrophila to determine if established Ludwigia populations would be negatively impacted by invasion. The

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29

Lidén, Marlene. "Restoration of endangered epiphytic lichens in fragmented forest landscapes the importance of habitat quality and transplantation techniques /." Umeå : Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200982.pdf.

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30

Nghidinwa, Kirsti C. "Why are some species invasive? : determining the importance of species traits across three invasion stages and enemy release of southern African native plants in New Zealand." Lincoln University, 2009. http://hdl.handle.net/10182/1438.

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There are many factors that have been proposed to contribute to plant invasiveness in nonnative ecosystems. Traits of invading species are one of them. It has been proposed that successful species at a certain invasion stage share particular traits, which could be used to predict the behaviour of potentially invasive plants at the respective stage. Three main stages of invasion are distinguished: introduction, naturalization, and invasion. I conducted a stageand trait-based analysis of available data for the invasion of New Zealand by the flora of southern Africa. Using 3076 southern African n

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31

Verschuyl, Jacob Pieter. "Biodiversity potential in the Pacific and Inland Northwest the relative importance of forest structure and available energy in driving species diversity /." Diss., Montana State University, 2007. http://etd.lib.montana.edu/etd/2007/verschuyl/VerschuylJ0507.pdf.

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32

Ennis, Courtney. "Spectroscopic identification of complex species containing water and ammonia and their importance to icy outer solar system bodies." University of Western Australia. Chemistry Discipline Group, 2009. http://theses.library.uwa.edu.au/adt-WU2009.0110.

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[Truncated abstract] This thesis examines the bonding interactions and chemical processes associated with irradiated water (H2O) and ammonia (NH3) molecules. The experiments conducted in the present study are designed to replicate the surface chemistry of outer Solar System bodies, particularly the icy surfaces of Saturn's inner moons. Infrared (IR) spectroscopy is used to identify the H2ONH3 complex isolated in an argon (Ar) matrix. An electric discharge is then applied to the H2O and NH3 species to produce the hydroxyl-ammonia (OHNH3) complex and the water-amidogen (H2ONH2) complex. Finally,

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33

Estrada, Hector. "Importance of the subsurface limestome and pockets of soil as sources of water for tree species in Yucatan, Mexico." Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?index=84&did=1914305761&SrchMode=1&sid=1&Fmt=7&retrieveGroup=0&VType=PQD&VInst=PROD&RQT=309&VName=PQD&TS=1270233485&clientId=48051.

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34

Rose, Jonathan Patrick. "The importance of micro-topographic heterogeneity in determining species diversity of alpine plant communities of Glacier National Park, MT." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/731.

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Alpine plant communities can be exceptionally diverse at a fine scale, and they often exhibit fine scale topographic variability. High species diversity is often attributed to spatial and temporal heterogeneity in the environment. The goal of this study was to test for a positive relationship between microtopographic heterogeneity and species diversity of alpine plants. Species diversity of vascular plants was sampled at 8 sites in Glacier National Park, MT during the summer of 2009. Species richness was assessed both within a 1 x 1 m plot and at 100 points spaced 10 cm apart within the plot.

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35

Kirkpatrick, Ryan Scott. "Nocturnal light and temperature influences on necrophagous, carrion-associating blow fly species (Diptera: Calliphoridae) of forensic importance in Central Texas." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1104.

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It is commonly thought that blow flies are nocturnally inactive. Blowflies are often important in helping to estimate post mortem intervals (PMI) for corpses found at death scenes. If blow flies oviposit during nocturnal hours, there could possibly be up to 12-hour discrepancies for estimates of PMI. Two blow fly species, Phaenicia eximia (Wiedemann) and Cochliomyia macellaria (F.), oviposited nocturnally on ground beef baits in 2003, during the onset of low-atmospheric pressure (an air mass with lower atmospheric pressure than that of the air surrounding it) at rural study sites near Sno

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36

Morales, Ernesto J. "Self-recruiting species in farmer managed aquatic systems : their importance to the livelihoods of the rural poor in Southeast Asia." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/250.

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The self-recruiting species (SRS) are aquatic animals that can be harvested regularly from a farmer managed system without regular stocking as described by Little (2002a, b). The potential and current role of self-recruiting species from farmer managed aquatic systems (FMAS) is often overlooked, whilst much attention has been given to stocked species (often associated in conventional culture ponds and cages) as well as the fisheries sector (often relates to large water bodies i.e. river lakes and reservoirs). Using the combination of qualitative and quantitative research approaches, the curren

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Kozak, Kenneth H., and John J. Wiens. "What explains patterns of species richness? The relative importance of climatic-niche evolution, morphological evolution, and ecological limits in salamanders." WILEY-BLACKWELL, 2016. http://hdl.handle.net/10150/621556.

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A major goal of evolutionary biology and ecology is to understand why species richness varies among clades. Previous studies have suggested that variation in richness among clades might be related to variation in rates of morphological evolution among clades (e.g., body size and shape). Other studies have suggested that richness patterns might be related to variation in rates of climatic-niche evolution. However, few studies, if any, have tested the relative importance of these variables in explaining patterns of richness among clades. Here, we test their relative importance among major clades

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Wilkins, Keiko W. "The Importance of Dissolved Organic Matter Source on the Survival and Growth of Juvenile Daphnia." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1578699709430677.

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39

Towner, Ronald H., Matthew W. Salzer, James A. Parks, and K. Renee Barlow. "Assessing The Importance Of Past Human Behavior In Dendroarchaeological Research: Examples From Range Creek Canyon, Utah, U.S.A." Tree-Ring Society, 2009. http://hdl.handle.net/10150/622611.

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Dendroarchaeological samples can contain three kinds of information: chronological, behavioral, and environmental. The decisions of past people regarding species selection, beam size, procurement and modification techniques, deadwood use, and stockpiling are the most critical factors influencing an archaeological date distribution. Using dendrochronological samples from prehistoric and historic period sites in the same area of eastern Utah, this paper examines past human behavior as the critical factor in dendroarchaeological date distributions.

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40

Schimanski, Kate Bridget. "The importance of selective filters on vessel biofouling invasion processes." Thesis, University of Canterbury. School of Biological Sciences, 2015. http://hdl.handle.net/10092/11299.

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The spread of exotic species is considered to be one of the most significant threats to ecosystems and emphasises the need for appropriate management interventions. The majority of marine non-indigenous species (NIS) are believed to have been introduced via ship biofouling and their domestic spread continues to take place via this mechanism. In some countries, biosecurity systems have been developed to prevent the introduction of NIS through biofouling. However, implementing biosecurity strategies is difficult due to the challenges around identifying high-risk vectors. Reliable predictors of r

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41

Susset, Eline. "Importance des agrégations de diapause dans la reproduction de la coccinelle Hippodamia undecimnotata (Schneider) : (Coleoptera Coccinellidae)." Thesis, Toulouse 3, 2016. http://www.theses.fr/2016TOU30146/document.

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Les causes évolutives de certaines formes de vie en groupe sont bien identifiées mais pas celles des agrégations de diapause des arthropodes (rassemblements monospécifiques d'adultes dans des sites à localisation constante). Dans cette thèse, j'ai testé si, selon l'hypothèse du lek caché, les arthropodes se rassemblent pour trouver leurs partenaires sexuels chez la coccinelle Hippodamia undecimnotata. J'ai montré que les coccinelles se rassemblent dans des endroits avec un repère proéminent et où le risque de pesticides est faible, puis que les conditions abiotiques dans les sites sont défavor

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Dahlsjö, Cecilia A. L. "Termite assemblage structure and function : a study of the importance of termites in lowland equatorial forests." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:28a37283-4013-4c5a-be2e-aac26d97f838.

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Termites are important ecosystem engineers in tropical and sub-tropical terrestrial regions where they influence ecosystem processes by altering the physical and chemical structure of the habitat. Termites affect nutrient availability by decomposition and comminution (shredding) of organic matter and act as agents of bioturbation as they re-work substrates during the construction of nests, tunnels and runways. At present we have a relatively good understanding of termite diversity patterns in the tropics through the extensive use of the standardised transect sampling protocol by Eggleton et al

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Näslund, Johan. "The importance of biodiversity for ecosystem processes in sediments : experimental examples from the Baltic Sea." Doctoral thesis, Stockholms universitet, Systemekologiska institutionen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-38893.

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Aquatic sediments are, by surface, the largest habitat on Earth. A wide diversity of organisms inhabit these sediments and by their actions they have a large influence on and also mediate many ecosystem processes. Several of these processes, such as decomposition and remineralisation of organic matter are important on a global scale and are essential to sustain life on Earth. The main aim of this thesis was to use an experimental ecosystem ecology approach in order to study some of these ecosystem processes in marine sediments and how they are linked to biodiversity. Paper I and II found that

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Santos, Ícaro Gonçalves. "Diversidade florística e fitossociológica dos quintais agroflorestais do reassentamento Mariana, Tocantins." Universidade Federal do Tocantins, 2017. http://hdl.handle.net/11612/389.

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Objetivou-se caracterizar a composição florística e fitossociológica do componente arbustivo-arbóreo de quatro quintais agroflorestais (QAs) no reassentamento Mariana, Tocantins, a fim de conhecer a estrutura dessas áreas e as suas contribuições para a manutenção, proteção e conservação da biodiversidade. Além disso, buscou-se subsidiar a formação de uma base de dados referentes aos quintais agroflorestais no estado do Tocantins. O levantamento foi realizado em quatro quintais agroflorestais no reassentamento Mariana, que se encontra entre os municípios de Palmas e Porto Nacional, no estado do

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Pirathiban, Ramethaa. "Improving species distribution modelling: Selecting absences and eliciting variable usefulness for input into standard algorithms or a Bayesian hierarchical meta-factor model." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/134401/1/Ramethaa_Pirathiban_Thesis.pdf.

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This thesis explores and proposes methods to improve species distribution models. Throughout this thesis, a rich class of statistical modelling techniques has been developed to address crucial and interesting issues related to the data input into these models. The overall contribution of this research is the advancement of knowledge on species distribution modelling through an increased understanding of extraneous zeros, quality of the ecological data, variable selection that incorporates ecological theory and evaluating performance of the fitted models. Though motivated by the challenge of sp

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Casties, Isabel [Verfasser], Elizabeta [Akademischer Betreuer] Briski, and Ulrich [Gutachter] Sommer. "Non-indigenous species in Northern Europe and the Great Lakes-St. Lawrence River: the importance of geographic origin / Isabel Casties ; Gutachter: Ulrich Sommer ; Betreuer: Elizabeta Briski." Kiel : Universitätsbibliothek Kiel, 2018. http://d-nb.info/1236572726/34.

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Malone, Meredith B. "Abundance, Fruit Presence, and Growth Enhancement of Prestoea montana and Roystonea borinquena, Two Palm Species of Importance to Amazona vittata (Puerto Rican Parrot), in Río Abajo Forest, Puerto Rico." NCSU, 2007. http://www.lib.ncsu.edu/theses/available/etd-05012007-121725/.

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The endangered Puerto Rican parrot (Amazona vittata) has been bred in captivity for decades, and since 2000, over 50 parrots have been released into native habitats to rebuild wild populations in Puerto Rico. One group of 21 parrots was released into Río Abajo Forest in the karstic region of Puerto Rico in November 2006, where high quality habitat resources exist, but the management of sustainable food resources, such as the fruit of Prestoea montana (sierra palm) and Roystonea borinquena (royal palm), is imperative. An inventory of accessible regions in Río Abajo Forest was conducted to asses

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Patsias, Kathrin [Verfasser], Helge [Akademischer Betreuer] Bruelheide, Isabell [Akademischer Betreuer] Hensen, and Jitka [Akademischer Betreuer] Klimešová. "The importance of gap dynamics for the reproduction of clonal plant species in natural forests in the Harz National Park / Kathrin Patsias. Betreuer: Helge Bruelheide ; Isabell Hensen ; Jitka Klimešová." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2011. http://d-nb.info/1025301463/34.

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Thomas, Marc Merlin. "The effects of defoliation on seasonal growth dynamics, the importance of internal nitrogen-recycling and the availability of soil nutrients: implications for the invasive potential of Buddleia davidii (Franch.)." Thesis, University of Canterbury. Biological Sciences, 2007. http://hdl.handle.net/10092/1477.

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ABSTRACT Assessing the impact of herbivory on plant growth and reproduction is important to predict the success of biocontrol of invasive plants. Leaf area production is most important, as photosynthesis provides the foundation for all plant growth and fitness. High levels of defoliation generally reduce the productivity of plants. However, leaf area production fluctuates during the season and compensational growth may occur, which both complicate accurate estimations of defoliation impacts. Under field conditions the interaction with neighbouring species and the availability of soil nutrient

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Monteiro, Lúcia Maria Oliveira. "Modelação e parametrização de índices de importância ecológica (IIE): um contributo para gestão e conservação da natureza." Master's thesis, Universidade de Évora, 2013. http://hdl.handle.net/10174/16080.

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Modelação e parametrização de Índices de Importância Ecológica (IIE): um contributo para gestão e conservação da natureza Uma das principais estratégias necessárias para reduzir a perda de biodiversidade é a criação e gestão adequada de áreas protegidas bem como a definição de prioridades de conservação através da valorização das espécies. O objetivo deste trabalho foi cartografar a importância ecológica avifaunística no território continental, avaliando o grau de correspondência entre as áreas de maior importância ecológica e as áreas classificadas como Zona de Proteção Especial (ZPE). Para o

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