DOI: 10.1007/s00442-020-04593-0
论文题名: Diversity and temperature indirectly reduce CO2 concentrations in experimental freshwater communities
作者: Lewington-Pearce L. ; Parker B. ; Narwani A. ; Nielsen J.M. ; Kratina P.
刊名: Oecologia
ISSN: 298549
出版年: 2020
卷: 192, 期: 2 语种: 英语
英文关键词: Biodiversity
; Climate warming
; Consumer–resource interactions
; Ecosystem functioning
; Indirect effects
; Trophic interactions
Scopus关键词: carbon dioxide
; concentration (composition)
; ecosystem function
; freshwater ecosystem
; global warming
; species diversity
; trophic conditions
; zooplankton
; carbon dioxide
; fresh water
; animal
; biodiversity
; biomass
; ecosystem
; temperature
; zooplankton
; Animals
; Biodiversity
; Biomass
; Carbon Dioxide
; Ecosystem
; Fresh Water
; Temperature
; Zooplankton
英文摘要: Biodiversity loss and climate warming are occurring in concert, with potentially profound impacts on ecosystem functioning. We currently know very little about the combined effects of these changes on the links between the community structure, dynamics and the resulting in situ CO2 concentrations in freshwater ecosystems. Here we aimed to determine both individual and combined effects of temperature and non-resource diversity (species inedible for a given consumer) on CO2 concentration. Our analysis further aimed to establish both direct effects on CO2 concentrations and potential indirect effects that occur via changes to the phytoplankton and zooplankton biomasses. Our results showed that there were no interactive effects of changes in temperature and diversity on CO2 concentration in the water. Instead, independent increases in either temperature or non-resource diversity resulted in a substantial reduction in CO2 concentrations, particularly at the highest non-resource diversity. The effects of non-resource diversity and warming on CO2 were indirect, resulting largely from the positive impacts on total biomass of primary producers. Our study is the first to experimentally partition the impacts of temperature and diversity on the consumer–resource dynamics and associated changes to CO2 concentrations. It provides new mechanistic insights into the role of diverse plankton communities for ecosystem functioning and their importance in regulating CO2 dynamics under ongoing climate warming. © 2020, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159819
Appears in Collections: 气候变化与战略
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作者单位: School of Biological and Chemical Sciences, Queen Mary University of London, London, E1 4NS, United Kingdom; Department of Aquatic Ecology, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, 8600, Switzerland; National Oceanic and Atmospheric Administration, Alaska Fisheries Science Center, 7600 Sand Point Way NE, Seattle, WA 98115, United States
Recommended Citation:
Lewington-Pearce L.,Parker B.,Narwani A.,et al. Diversity and temperature indirectly reduce CO2 concentrations in experimental freshwater communities[J]. Oecologia,2020-01-01,192(2)