Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"species-area relationship"”.
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Marine ecosystem classification and conservation targets within the Agulhas ecoregion, South Africa
… rocky substrata generally exhibited higher in species richness and were most commonly characterized by stalked crinoids, various corals and bryozoans, whereas communities found in habitats comprising unconsolidated sediment were lower in species richness and commonly characterized by …
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The application of systematic conservation planning in the succulent Karoo biome of South Africa
… perform better as surrogates than point-based species distribution data. Quarter degree square-based species distribution data cannot be used for on-the-ground conservation planning. It was demonstrated that it is possible to set biologically meaningful conservation targets to represent …
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The application of systematic conservation planning in the succulent Karoo biome of South Africa.
… perform better as surrogates than point-based species distribution data. Quarter degree square-based species distribution data cannot be used for on-the-ground conservation planning. It was demonstrated that it is possible to set biologically meaningful conservation targets to represent …
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Including biodiversity conservation in climate change decision making
… models. For this, I chose the Countryside Species-Area Relationship (cSAR) ecologic model and because of its non-linearity I propose three methods that can be used to integrate the chosen ecologic model into an optimization model. I also discuss the ethical assumptions behind the way …
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The Effects of Invasive Plants on Biodiversity Across Spatial Scales
<p>Although introduced plant species are often considered to be one of the most notable anthropogenic threats to biodiversity, their influence on biodiversity remains controversial. Some studies have shown large declines in biodiversity in plant-invaded areas, whereas others have noted that plant …
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Diversity and Density of Shelterbelt Bird Communities
The number of bird species and the density of each species were monitored in 69 shelterbelts in eastern South Dakota during spring migration and breeding seasons in 1976 and 1977. A total of 44 different species of birds were found during breeding and 68 species during spring migration. …
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Understanding drivers of long-term change in semi-natural habitats.
… for plant community extinction debts (delayed species extinctions following habitat degradation) in three of the semi-natural habitats (calcareous grassland, heathland and broadleaved woodland), thus addressing the second research question. A key knowledge gap is addressed by comparing three …
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Φυτοποικιλότητα και νησιωτική βιογεωγραφία για την αειφορική διαχείριση προστατευόμενων περιοχών του Ιονίου πελάγους
Τα νησιά αποτελούν σημαντικά φυσικά «εργαστήρια» για πολλές οικολογικές, εξελικτικές και βιογεωγραφικές μελέτες. Επίσης, αποτελούν αναγνωρισμένα κέντρα ειδών με μικρή γεωγραφική εξάπλωση (κέντρα ενδημισμού), αλλά ταυτόχρονα όμως χαρακτηρίζονται από χαμηλότερη ποικιλομορφία σε σύγκριση με τις …