3 documents found, page 1 of 1
Changes in potential mammal diversity in national parks and their implications ...
Estrada, Alba; Barbosa, A. Márcia; Real, RaimundoObserved species richness (OSR) is a widely used and well-studied biodiversity metric. However, non-observed species in favorable ecosystems are also relevant. Two metrics that include observed and potential species were recently defined: potential biodiversity (hereafter potential species richness—PSR) and geometric mean of favorabilities (GMF). We used these metrics to evaluate the national park network of ma...
Calcular corotipos sin dividir el territorio en OGUs: una adaptación de los índ...
Barbosa, A. Márcia; Estrada, AlbaLa definición de patrones de distribución característicos (corotipos) tiene aplicaciones importantes en biogeografía y conservación. Se basa en la comparación de presencias y ausencias de especies en distintas localidades o en una malla de unidades geográficas operativas (OGUs) como, por ejemplo, cuadrículas. El tipo y tamaño de las OGUs afecta a los corotipos resultantes, y cualquier parcelación del territorio...
Atlas versus range maps: robustness of chorological relationships to distributi...
Barbosa, A. Márcia; Estrada, Alba; Marquez, Ana L.; Purvis, Andy; Orme, C. David L.Aim Chorological relationships describe the patterns of distributional overlap among species. In addition to revealing biogeographical structure, the resulting clusters of species with similar geographical distributions can serve as natural units in conservation planning. Here, we assess the extent to which temporal, methodological and taxonomical differences in the source of species’ distribution data can affe...