Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s10531-010-9785-1
Titel (primär) Reassessing Neotropical angiosperm distribution patterns based on monographic data: a geometric interpolation approach
Autor Raedig, C.; Dormann, C.F.; Hildebrandt, A.; Lautenbach, S.
Quelle Biodiversity and Conservation
Erscheinungsjahr 2010
Department CLE; CHS
Band/Volume 19
Heft 6
Seite von 1523
Seite bis 1546
Sprache englisch
Keywords Angiosperm distribution patterns; Broad-scale ecology; Conservation biogeography; Interpolation; Leave-one-out-cross-validation; Monographic data; Narrow endemic species; Neotropics; Sampling effort; Species geographic ranges
Abstract Monographic data rely on specimens deposited in herbaria and museums, which have been thoroughly revised by experts. However, monographic data have been rarely used to map species richness at large scale, mainly because of the difficulties caused by spatially heterogeneous sampling effort. In this paper we estimate patterns of species richness and narrow endemism, based on monographic data of 4,055 Neotropical angiosperm species. We propose a geometric interpolation method to derive species ranges at a 1° grid resolution. To this we apply an inverse distance-weighted summation scheme to derive maps of species richness and endemism. In the latter we also adjust for heterogeneous sampling effort. Finally, we test the robustness of the interpolated species ranges and derived species richness by applying the same method but using a leave-one-out-cross-validation (LOOCV). The derived map shows four distinct regions of elevated species richness: (1) Central America, (2) the Northern Andes, (3) Amazonia and (4) the Brazilian Atlantic coast ('Mata Atlântica'). The region with the highest estimated species richness is Amazonia, with Central America following closely behind. Centers of narrow endemism are located over the entire Neotropics, several of them coinciding with regions of elevated species richness. Sampling effort has a minor influence on the interpolation of overall species richness, but it substantially influences the estimation of regions of narrow endemism. Thus, in order to improve maps of narrow endemism and resulting conservation efforts, more collection and identification activity is required.
dauerhafte UFZ-Verlinkung
Raedig, C., Dormann, C.F., Hildebrandt, A., Lautenbach, S. (2010):
Reassessing Neotropical angiosperm distribution patterns based on monographic data: a geometric interpolation approach
Biodivers. Conserv. 19 (6), 1523 - 1546 10.1007/s10531-010-9785-1