DOI: 10.1111/ele.13606
论文题名: Shifting limitation of primary production: experimental support for a new model in lake ecosystems
作者: Olson C.R. ; Solomon C.T. ; Jones S.E.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2020
卷: 23, 期: 12 起始页码: 1800
结束页码: 1808
语种: 英语
中文关键词: Dissolved organic matter
; eutrophication
; lake
; light
; limitation
; model
; nutrients
; phosphorus
; primary production
; stoichiometry
英文关键词: carbon
; ecosystem
; lake
; Carbon
; Ecosystem
; Lakes
; Nutrients
英文摘要: The limits on primary production vary in complex ways across space and time. Strong tests of clear conceptual models have been instrumental in understanding these patterns in both terrestrial and aquatic ecosystems. Here we present the first experimental test of a new model describing how shifts from nutrient to light limitation control primary productivity in lake ecosystems as hydrological inputs of nutrients and organic matter vary. We found support for two key predictions of the model: that gross primary production (GPP) follows a hump-shaped relationship with increasing dissolved organic carbon (DOC) concentrations; and that the maximum GPP, and the critical DOC concentration at which the hump occurs, are determined by the stoichiometry and chromophoricity of the hydrological inputs. Our results advance fundamental understanding of the limits on aquatic primary production, and have important applications given ongoing anthropogenic alterations of the nutrient and organic matter inputs to surface waters. © 2020 The Authors. Ecology Letters published by John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166689
Appears in Collections: 气候变化与战略
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作者单位: Department of Biological Sciences, University of Notre Dame, Notre Dame, IN 46556, United States; Cary Institute of Ecosystem Studies, Millbrook, NY 12545, United States
Recommended Citation:
Olson C.R.,Solomon C.T.,Jones S.E.. Shifting limitation of primary production: experimental support for a new model in lake ecosystems[J]. Ecology Letters,2020-01-01,23(12)