Structure of the species-energy relationship

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11620%2F04%3A00012099" target="_blank" >RIV/00216208:11620/04:00012099 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Structure of the species-energy relationship
Original language description
Using data on the distribution of birds in Southern Africa, we provide an explicit determination of the structure of species distribution along the productivity gradient (which is correlated to species richness), showing that the majority of species exhibit increasing occupancy toward more productive regions, but decreasing average reporting rates per species within occupied grid cells. The mean geographical range size of species in Southern Africa decrease along the energy gradient, as most species arepresent at high productivity levels but only some can extend their ranges toward lower levels. Species turnover among grid cells consequently decreases toward high energy levels. These patterns support the hypothesis that higher productivity leads to more species by increasing the probability of occurrence of resources that enable the persistence of viable populations, without necessarily affecting local population densities.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EH - Ecology - communities
OECD FORD branch
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Publication year
2004
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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