DOI: 10.1111/ele.12812
Scopus记录号: 2-s2.0-85026375757
论文题名: Gradual changes in range size accompany long-term trends in species richness
作者: Batt R.D. ; Morley J.W. ; Selden R.L. ; Tingley M.W. ; Pinsky M.L.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期: 9 起始页码: 1148
结束页码: 1157
语种: 英语
英文关键词: Bottom trawl
; detectability
; marine
; MSOM
; occupancy
; range size
; regional
; species distribution
; species richness
; time series
Scopus关键词: biodiversity
; ecosystem
; island (geological)
; North America
; Biodiversity
; Ecosystem
; Islands
; North America
英文摘要: Species richness has long been used as an indicator of ecosystem functioning and health. Global richness is declining, but it is unclear whether sub-global trends differ. Regional trends are especially understudied, with most focused on island regions where richness is strongly impacted by novel colonisations. We addressed this knowledge gap by testing for multi-decade trends in species richness in nine open marine regions around North America (197 region-years) while accounting for imperfect observations and grounding our findings in species-level range dynamics. We found positive richness trends in eight of nine regions, four of which were statistically significant. Species' range sizes generally contracted pre-extinction and expanded post-colonisation, but the ranges of transient species expanded over the long-term, slowly increasing their regional retention and driving increasing richness. These results provide more evidence that sub-global richness trends are stable or increasing, and highlight the utility of range size for understanding richness dynamics. © 2017 John Wiley & Sons Ltd/CNRS
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107572
Appears in Collections: 气候减缓与适应
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作者单位: Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ, United States; Department of Ecology and Evolution, University of Connecticut, Storrs, CT, United States
Recommended Citation:
Batt R.D.,Morley J.W.,Selden R.L.,et al. Gradual changes in range size accompany long-term trends in species richness[J]. Ecology Letters,2017-01-01,20(9)