Testing which axes of species differentiation underlie covariance of phylogeographic similarity among montane sedge species.

Autor: Hodel RGJ; Department of Ecology and Evolutionary Biology, Biological Sciences Building, University of Michigan, Ann Arbor, Michigan, 48109.; Present Address: Department of Botany, National Museum of Natural History, MRC166, Smithsonian Institution, Washington, DC, 20013., Massatti R; U.S. Geological Survey, Southwest Biological Science Center, Flagstaff, Arizona, 86001., Bishop SGD; Department of Ecology and Evolutionary Biology, Biological Sciences Building, University of Michigan, Ann Arbor, Michigan, 48109., Knowles LL; Department of Ecology and Evolutionary Biology, Biological Sciences Building, University of Michigan, Ann Arbor, Michigan, 48109.
Jazyk: angličtina
Zdroj: Evolution; international journal of organic evolution [Evolution] 2021 Feb; Vol. 75 (2), pp. 349-364. Date of Electronic Publication: 2021 Jan 12.
DOI: 10.1111/evo.14159
Abstrakt: Co-distributed species may exhibit similar phylogeographic patterns due to shared environmental factors or discordant patterns attributed to the influence of species-specific traits. Although either concordant or discordant patterns could occur due to chance, stark differences in key traits (e.g., dispersal ability) may readily explain differences between species. Multiple species' attributes may affect genetic patterns, and it is difficult to isolate the contribution of each. Here we compare the relative importance of two attributes, range size, and niche breadth, in shaping the spatial structure of genetic variation in four sedge species (genus Carex) from the Rocky Mountains. Within two pairs of co-distributed species, one species exhibits narrow niche breadth, while the other species has broad niche breadth. Furthermore, one pair of co-distributed species has a large geographical distribution, while the other has a small distribution. The four species represent a natural experiment to tease apart how these attributes (i.e., range size and niche breadth) affect phylogeographic patterns. Investigations of genetic variation and structure revealed that range size, but not niche breadth, is related to spatial genetic covariation across species of montane sedges. Our study highlights how isolating key attributes across multiple species can inform their impact on processes driving intraspecific differentiation.
(© 2021 The Authors. Evolution © 2021 The Society for the Study of Evolution.)
Databáze: MEDLINE
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