DOI: 10.1111/gcb.13625
论文题名: Animal pee in the sea: consumer-mediated nutrient dynamics in the world's changing oceans
作者: Allgeier J.E. ; Burkepile D.E. ; Layman C.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2017
卷: 23, 期: 6 起始页码: 2166
结束页码: 2178
语种: 英语
英文关键词: biodiversity loss
; ecological stoichiometry
; eutrophication
; excretion
; fish
; food web
; nitrogen
; overfishing
; phosphorus
Scopus关键词: Animalia
英文摘要: Humans have drastically altered the abundance of animals in marine ecosystems via exploitation. Reduced abundance can destabilize food webs, leading to cascading indirect effects that dramatically reorganize community structure and shift ecosystem function. However, the additional implications of these top-down changes for biogeochemical cycles via consumer-mediated nutrient dynamics (CND) are often overlooked in marine systems, particularly in coastal areas. Here, we review research that underscores the importance of this bottom-up control at local, regional, and global scales in coastal marine ecosystems, and the potential implications of anthropogenic change to fundamentally alter these processes. We focus attention on the two primary ways consumers affect nutrient dynamics, with emphasis on implications for the nutrient capacity of ecosystems: (1) the storage and retention of nutrients in biomass, and (2) the supply of nutrients via excretion and egestion. Nutrient storage in consumer biomass may be especially important in many marine ecosystems because consumers, as opposed to producers, often dominate organismal biomass. As for nutrient supply, we emphasize how consumers enhance primary production through both press and pulse dynamics. Looking forward, we explore the importance of CDN for improving theory (e.g., ecological stoichiometry, metabolic theory, and biodiversity–ecosystem function relationships), all in the context of global environmental change. Increasing research focus on CND will likely transform our perspectives on how consumers affect the functioning of marine ecosystems. © 2017 John Wiley & Sons Ltd 资助项目: Funding was provided by a National Science Foundation Postdoctoral Research Fellowship in Biology to J.E. Allgeier, National Science Foundation OCE #0746164 and #1405198 to C.A. Layman, and National Science Foundation OCE #1130786 and #1547952 to D.E. Burkepile.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60951
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Ecology, Evolution, and Marine Biology, University of California, Santa Barbara, CA, United States; Department of Applied Ecology, North Carolina State University, Raleigh, NC, United States
Recommended Citation:
Allgeier J.E.,Burkepile D.E.,Layman C.A.. Animal pee in the sea: consumer-mediated nutrient dynamics in the world's changing oceans[J]. Global Change Biology,2017-01-01,23(6)