DOI: 10.1111/gcb.12480
论文题名: Global reductions in seafloor biomass in response to climate change
作者: Jones D.O.B. ; Yool A. ; Wei C.-L. ; Henson S.A. ; Ruhl H.A. ; Watson R.A. ; Gehlen M.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 6 起始页码: 1861
结束页码: 1872
语种: 英语
英文关键词: Benthic
; Deep-sea
; Macroecology
; Macrofauna
; Megafauna
; Meiofaunal
; Size structure
; Standing stock
Scopus关键词: biodiversity
; biogeochemistry
; biomass
; carbon flux
; climate change
; climate effect
; deep-sea benthos
; ecosystem function
; ecosystem service
; food web
; global change
; macroecology
; meiofauna
; particulate organic carbon
; seafloor
; Atlantic Ocean
; Atlantic Ocean (Northeast)
; Anthozoa
; animal
; biodiversity
; biological model
; biomass
; carbon cycle
; climate change
; ecosystem
; invertebrate
; physiology
; sea
; time factor
; vertebrate
; Animals
; Biodiversity
; Biomass
; Carbon Cycle
; Climate Change
; Ecosystem
; Invertebrates
; Models, Biological
; Oceans and Seas
; Time Factors
; Vertebrates
英文摘要: Seafloor organisms are vital for healthy marine ecosystems, contributing to elemental cycling, benthic remineralization, and ultimately sequestration of carbon. Deep-sea life is primarily reliant on the export flux of particulate organic carbon from the surface ocean for food, but most ocean biogeochemistry models predict global decreases in export flux resulting from 21st century anthropogenically induced warming. Here we show that decadal-to-century scale changes in carbon export associated with climate change lead to an estimated 5.2% decrease in future (2091-2100) global open ocean benthic biomass under RCP8.5 (reduction of 5.2 Mt C) compared with contemporary conditions (2006-2015). Our projections use multi-model mean export flux estimates from eight fully coupled earth system models, which contributed to the Coupled Model Intercomparison Project Phase 5, that have been forced by high and low representative concentration pathways (RCP8.5 and 4.5, respectively). These export flux estimates are used in conjunction with published empirical relationships to predict changes in benthic biomass. The polar oceans and some upwelling areas may experience increases in benthic biomass, but most other regions show decreases, with up to 38% reductions in parts of the northeast Atlantic. Our analysis projects a future ocean with smaller sized infaunal benthos, potentially reducing energy transfer rates though benthic multicellular food webs. More than 80% of potential deep-water biodiversity hotspots known around the world, including canyons, seamounts, and cold-water coral reefs, are projected to experience negative changes in biomass. These major reductions in biomass may lead to widespread change in benthic ecosystems and the functions and services they provide. © 2013 The Authors Global Change Biology 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/62132
Appears in Collections: 影响、适应和脆弱性
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作者单位: National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH, United Kingdom; Ocean Science Centre, Memorial University of Newfoundland, St. John's, A1C 5S7, Canada; Institute for Marine and Antarctic Studies Taroona, University of Tasmania, Private Bag 49, Hobart, Tasmania , 7001, Australia; LSCE/IPSL, Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ Orme des Merisiers, Bât. 712, CEA/Saclay 91198, Gif-sur-Yvette, Cedex, France
Recommended Citation:
Jones D.O.B.,Yool A.,Wei C.-L.,et al. Global reductions in seafloor biomass in response to climate change[J]. Global Change Biology,2014-01-01,20(6)