The latitudinal species richness gradient in New World woody angiosperms is consistent with the tropical conservatism hypothesis
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منابع مشابه
The latitudinal species richness gradient in New World woody angiosperms is consistent with the tropical conservatism hypothesis.
Plant diversity, like that of most other taxonomic groups, peaks in the tropics, where climatic conditions are warm and wet, and it declines toward the temperate and polar zones as conditions become colder and drier, with more seasonally variable temperatures. Climate and evolutionary history are often considered competing explanations for the latitudinal gradient, but they are linked by the ev...
متن کاملLatitudinal gradient in species richness
What is the gradient? Amongst the earliest remarked, and best documented, of broad-scale spatial patterns of life on Earth is a trend for more species to be found towards lower latitudes. The latitudinal gradient in species richness is such that most extant eukaryote, perhaps also prokaryote, species are found in the tropics. Even when counted over quite small areas in which it is present, the ...
متن کاملAn asymmetry in niche conservatism contributes to the latitudinal species diversity gradient in New World vertebrates.
The Tropical Niche Conservatism hypothesis is a leading explanation for why biodiversity increases towards the equator. The model suggests that most lineages have tropical origins, with few dispersing into temperate regions. However, biotas are comprised of lineages with differing geographical origins, thus it is unclear whether lineages that originated on different continents will exhibit simi...
متن کاملLatitudinal patterns of range size and species richness of New World woody plants
Aim Relationships between range size and species richness are contentious, yet they are key to testing the various hypotheses that attempt to explain latitudinal diversity gradients. Our goal is to utilize the largest data set yet compiled for New World woody plant biogeography to describe and assess these relationships between species richness and range size. Location North and South America. ...
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The latitudinal diversity gradient is one of the most important problems in ecology and biogeography, but there is little consensus on its causes. Broad-scale species richness gradients are usually correlated with contemporary climate, with the highest number of species in warm, wet areas (Wright et al., 1993; Hawkins et al., 2003a). Even so, such associations do not Department of Ecology and E...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2014
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1308932111