J
James M. Sobel
Researcher at Binghamton University
Publications - 21
Citations - 4409
James M. Sobel is an academic researcher from Binghamton University. The author has contributed to research in topics: Mimulus & Incipient speciation. The author has an hindex of 12, co-authored 20 publications receiving 3937 citations. Previous affiliations of James M. Sobel include Michigan State University & University of Oregon.
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Journal ArticleDOI
Evolution and the latitudinal diversity gradient: speciation, extinction and biogeography
Gary G. Mittelbach,Douglas W. Schemske,Howard V. Cornell,Andrew P. Allen,Jonathan M. Brown,Mark B. Bush,Susan Harrison,Allen H. Hurlbert,Nancy Knowlton,Harilaos A. Lessios,Christy M. McCain,Amy R. McCune,Lucinda A. McDade,Mark A. McPeek,Thomas J. Near,Trevor D. Price,Robert E. Ricklefs,Kaustuv Roy,Dov F. Sax,Dolph Schluter,James M. Sobel,Michael Turelli +21 more
TL;DR: Two major hypotheses for the origin of the latitudinal diversity gradient are reviewed, including the time and area hypothesis and the diversification rate hypothesis, which hold that tropical regions diversify faster due to higher rates of speciation, or due to lower extinction rates.
Journal ArticleDOI
Is There a Latitudinal Gradient in the Importance of Biotic Interactions
TL;DR: The hypothesis that biotic interactions are more important in the tropics is supported, but additional research is needed on latitudinal comparisons of rates of molecular evolution for genes involved inBiotic interactions, estimates of gradients in interaction strength, and phylogenetic comparisons of the traits that med...
Is There a Latitudinal Gradient in the Importance of
TL;DR: This article found that biotic interactions are more important at low latitudes than high latitudes for a wide range of interactions, including herbivory and insect predation in the tropics, and predominantly tropical mutualisms such as cleaning symbioses and ant-plant interactions.
Journal ArticleDOI
The biology of speciation.
TL;DR: It is argued that natural selection is a ubiquitous part of speciation, and given the many ways in which stochastic and deterministic factors may interact during divergence, it is questioned whether the ecological speciation concept is useful.
Journal ArticleDOI
Unification of methods for estimating the strength of reproductive isolation
James M. Sobel,Grace F. Chen +1 more
TL;DR: This study provides a unified method for calculating isolation that relates the amount of gene flow experienced by taxa to random expectations in a simple linear framework that can be adjusted for use in all forms of isolation, and can accommodate cases in which null expectations for con‐ and heterospecific gene flow differ.