DOI: 10.1016/j.gloplacha.2020.103128
论文题名: Global physical controls on estuarine habitat distribution during sea level change: Consequences for genetic diversification through time
作者: Dolby G.A. ; Bedolla A.M. ; Bennett S.E.K. ; Jacobs D.K.
刊名: Global and Planetary Change
ISSN: 9218181
出版年: 2020
卷: 187 语种: 英语
英文关键词: Continental margins
; Diversification
; Earth-life evolution
; Estuaries
; Geographic Information Systems (GIS)
; Origination
; Paleobiology
; Species-area relation
Scopus关键词: Biodiversity
; Climate change
; Climate models
; Ecosystems
; Estuaries
; Geographic information systems
; Information systems
; Information use
; Population statistics
; Sea level
; Tectonics
; Continental margin
; Diversification
; Life evolution
; Origination
; Paleobiology
; Species-area relation
; Population distribution
; abundance
; biodiversity
; continental margin
; estuarine environment
; genetic variation
; geomorphology
; GIS
; global perspective
; paleobiology
; sea level change
; species richness
; species-area relationship
英文摘要: Determining the extrinsic (physical) factors controlling speciation and diversification of species through time is of key interest in paleontology and evolutionary biology. The role of sea-level change in shaping species richness patterns of marginal marine species has received much attention, but with variable conclusions. Recent work combining genetic data and Geographical Information Systems (GIS)-based habitat modeling yielded a framework for how geomorphology of continental margins mediates genetic connectivity of populations during sea-level change. This approach may ultimately yield insights on how distinct lineages, species, and biodiversity accumulate in coastal settings. Here, we expand this GIS work globally to different geomorphic settings to model estuarine habitat in a larger geographic framework and test how tectonic setting, oceanographic setting, climate, and margin age affect habitat distribution during sea-level change. In addition, independent of estuaries we explore paleobiologic (e.g. Olsson, 1961) and neontolologic effects of sea-level change on evolution, and test the relation between overall shelf area and species richness using data of 1721 fish species. We find 82% global reduction of estuarine habitat abundance at lowstand relative to highstand, and find large habitats change in size much more than small habitats. Consistent with prior work, narrow continental margins have significantly less habitat at highstand and lowstand than wide margins, and narrow margins significantly associate with fore-arc settings, effectively linking tectonic setting to habitat abundance. Surprisingly, narrow margins host greater species richness, a finding which violates the canonical species-area relation. This finding can be explained if: 1) the physical isolation imposed by narrow margins facilitates the formation of new species over time; 2) the size-stability of small habitats, which disproportionately occur on narrow margins, accumulate and retain species extirpated in the more variable habitats on wide margins; or 3) the smaller habitats on narrow margins facilitate greater species richness through greater habitat heterogeneity. These results are generally at odds with prior interpretations, but the combination of richness data and population genetic principles offer a different perspective on these long-studied questions. Finally, we emphasize that the nuance of Pleistocene-Holocene sea level oscillations should be more explicitly considered in genetic studies. © 2020 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158433
Appears in Collections: 气候变化与战略
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作者单位: School of Life Sciences, Arizona State University, Tempe, AZ 85287, United States; Center for Mechanisms of Evolution, Biodesign Institute, Tempe, AZ 85287, United States; U.S. Geological Survey, Geology, Minerals, Energy, and Geophysics Science Center, P.O. Box 158, Moffett Field, CA 94035, United States; Department of Ecology and Evolutionary Biology, UCLA, Los Angeles, CA 90068, United States
Recommended Citation:
Dolby G.A.,Bedolla A.M.,Bennett S.E.K.,et al. Global physical controls on estuarine habitat distribution during sea level change: Consequences for genetic diversification through time[J]. Global and Planetary Change,2020-01-01,187