DOI: 10.1111/gcb.13377
论文题名: Biological invasion by a benthivorous fish reduced the cover and species richness of aquatic plants in most lakes of a large North American ecoregion
作者: Bajer P.G. ; Beck M.W. ; Cross T.K. ; Koch J.D. ; Bartodziej W.M. ; Sorensen P.W.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 12 起始页码: 3937
结束页码: 3947
语种: 英语
英文关键词: biodiversity
; common carp
; Cyprinus carpio
; ecological impact
; ecological threshold
; ecosystem function
; macrophytes
; non-native
Scopus关键词: aquatic plant
; biodiversity
; biological invasion
; cyprinid
; ecological impact
; ecoregion
; ecosystem function
; freshwater ecosystem
; macrophyte
; species richness
; Great Plains
; Cyprinidae
; Cyprinus carpio
; animal
; biodiversity
; carp
; ecosystem
; introduced species
; lake
; North America
; plant
; theoretical model
; United States
; Animals
; Biodiversity
; Carps
; Ecosystem
; Introduced Species
; Lakes
; Models, Theoretical
; North America
; Plants
; United States
英文摘要: Biological invasions are projected to be the main driver of biodiversity and ecosystem function loss in lakes in the 21st century. However, the extent of these future losses is difficult to quantify because most invasions are recent and confounded by other stressors. In this study, we quantified the outcome of a century-old invasion, the introduction of common carp to North America, to illustrate potential consequences of introducing non-native ecosystem engineers to lakes worldwide. We used the decline in aquatic plant richness and cover as an index of ecological impact across three ecoregions: Great Plains, Eastern Temperate Forests and Northern Forests. Using whole-lake manipulations, we demonstrated that both submersed plant cover and richness declined exponentially as carp biomass increased such that plant cover was reduced to <10% and species richness was halved in lakes in which carp biomass exceeded 190 kg ha−1. Using catch rates amassed from 2000+ lakes, we showed that carp exceeded this biomass level in 70.6% of Great Plains lakes and 23.3% of Eastern Temperate Forests lakes, but 0% of Northern Forests lakes. Using model selection analysis, we showed that carp was a key driver of plant species richness along with Secchi depth, lake area and human development of lake watersheds. Model parameters showed that carp reduced species richness to a similar degree across lakes of various Secchi depths and surface areas. In regions dominated by carp (e.g., Great Plains), carp had a stronger impact on plant richness than human watershed development. Overall, our analysis shows that the introduction of common carp played a key role in driving a severe reduction in plant cover and richness in a majority of Great Plains lakes and a large portion of Eastern Temperate Forests lakes in North America. © 2016 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61234
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Fisheries, Wildlife and Conservation Biology, Minnesota Aquatic Invasive Species Research Center, University of Minnesota, 135 Skok Hall, 2003 Upper Buford Circle, St. Paul, MN, United States; Minnesota Department of Natural Resources, Fisheries Research, 20596 Hwy 7, Hutchinson, MN, United States; Ramsey Washington Metro Watershed District, 2665 Noel Drive, Little Canada, MN, United States; Gulf Ecology Division, USEPA National Health and Environmental Effects Research Laboratory, 1 Sabine Island Drive, Gulf Breeze, FL, United States
Recommended Citation:
Bajer P.G.,Beck M.W.,Cross T.K.,et al. Biological invasion by a benthivorous fish reduced the cover and species richness of aquatic plants in most lakes of a large North American ecoregion[J]. Global Change Biology,2016-01-01,22(12)