DOI: 10.1111/gcb.12679
论文题名: Spatial and body-size dependent response of marine pelagic communities to projected global climate change
作者: Lefort S. ; Aumont O. ; Bopp L. ; Arsouze T. ; Gehlen M. ; Maury O.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 1 起始页码: 154
结束页码: 164
语种: 英语
英文关键词: Biogeochemical model
; Body-size of organisms
; Climate change
; Climate scenario
; High trophic level model
; Pelagic communities
; Trophic transfer
Scopus关键词: sea water
; adaptation
; animal
; aquatic species
; biomass
; biota
; body size
; chemistry
; climate change
; ecosystem
; physiology
; population dynamics
; predation
; temperature
; theoretical model
; Adaptation, Physiological
; Animals
; Aquatic Organisms
; Biomass
; Biota
; Body Size
; Climate Change
; Ecosystem
; Models, Theoretical
; Population Dynamics
; Predatory Behavior
; Seawater
; Temperature
英文摘要: Temperature, oxygen, and food availability directly affect marine life. Climate models project a global warming of the ocean's surface (~+3 °C), a de-oxygenation of the ocean's interior (~-3%) and a decrease in total marine net primary production (~-8%) under the 'business as usual' climate change scenario (RCP8.5). We estimated the effects of these changes on biological communities using a coupled biogeochemical (PISCES) - ecosystems (APECOSM) model forced by the physical outputs of the last generation of the IPSL-CM Earth System Model. The APECOSM model is a size-structured bio-energetic model that simulates the 3D dynamical distributions of three interactive pelagic communities (epipelagic, mesopelagic, and migratory) under the effects of multiple environmental factors. The PISCES-APECOSM model ran from 1850 to 2100 under historical forcing followed by RCP8.5. Our RCP8.5 simulation highlights significant changes in the spatial distribution, biomass, and maximum body-size of the simulated pelagic communities. Biomass and maximum body-size increase at high latitude over the course of the century, reflecting the capacity of marine organisms to respond to new suitable environment. At low- and midlatitude, biomass and maximum body-size strongly decrease. In those regions, large organisms cannot maintain their high metabolic needs because of limited and declining food availability. This resource reduction enhances the competition and modifies the biomass distribution among and within the three communities: the proportion of small organisms increases in the three communities and the migrant community that initially comprised a higher proportion of small organisms is favored. The greater resilience of small body-size organisms resides in their capacity to fulfill their metabolic needs under reduced energy supply and is further favored by the release of predation pressure due to the decline of large organisms. These results suggest that small body-size organisms might be more resilient to climate change than large ones. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61815
Appears in Collections: 影响、适应和脆弱性
There are no files associated with this item.
作者单位: Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL CNRS/CEA/UVSQ), Orme des Merisiers, Point Courrier 132, Bât. 712, Gif-sur-Yvette Cedex, France; Laboratoire de Physique des Océans (LPO/IRD/UMR6539), IUEM Technopôle Brest-Iroise, rue Dumont d'Urville, Plouzané, France; ENSTA-ParisTech, 828 Boulevard des Maréchaux, Palaiseau Cedex, France; LMD/X, Ecole Polytechnique, Palaiseau Cedex, France; Institut de Recherche pour le développement (IRD), UMR 212 EME, CRH, av. Jean Monnet, B.P. 171, Sète cedex, France; International Laboratory ICEMASA, Department of Oceanography, University of Cape Town, Private Bag X3, Rondebosch, Cape Town, South Africa
Recommended Citation:
Lefort S.,Aumont O.,Bopp L.,et al. Spatial and body-size dependent response of marine pelagic communities to projected global climate change[J]. Global Change Biology,2015-01-01,21(1)