DOI: 10.1111/gcb.13346
论文题名: Bivalve aquaculture-environment interactions in the context of climate change
作者: Filgueira R. ; Guyondet T. ; Comeau L.A. ; Tremblay R.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2016
卷: 22, 期: 12 起始页码: 3901
结束页码: 3913
语种: 英语
英文关键词: aquaculture
; bivalve
; climate change
; estuarine functioning
; modelling
Scopus关键词: aquaculture
; bivalve
; climate change
; ecosystem function
; environmental impact
; hydrodynamics
; precipitation (climatology)
; primary production
; sea level change
; warming
; Bivalvia
; Crassostrea virginica
; Mytilus edulis
; animal
; aquaculture
; bay
; bivalve
; climate change
; ecosystem
; estuary
; Animals
; Aquaculture
; Bays
; Bivalvia
; Climate Change
; Ecosystem
; Estuaries
英文摘要: Coastal embayments are at risk of impacts by climate change drivers such as ocean warming, sea level rise and alteration in precipitation regimes. The response of the ecosystem to these drivers is highly dependent on their magnitude of change, but also on physical characteristics such as bay morphology and river discharge, which play key roles in water residence time and hence estuarine functioning. These considerations are especially relevant for bivalve aquaculture sites, where the cultured biomass can alter ecosystem dynamics. The combination of climate change, physical and aquaculture drivers can result in synergistic/antagonistic and nonlinear processes. A spatially explicit model was constructed to explore effects of the physical environment (bay geomorphic type, freshwater inputs), climate change drivers (sea level, temperature, precipitation) and aquaculture (bivalve species, stock) on ecosystem functioning. A factorial design led to 336 scenarios (48 hydrodynamic × 7 management). Model outcomes suggest that the physical environment controls estuarine functioning given its influence on primary productivity (bottom-up control dominated by riverine nutrients) and horizontal advection with the open ocean (dominated by bay geomorphic type). The intensity of bivalve aquaculture ultimately determines the bivalve–phytoplankton trophic interaction, which can range from a bottom-up control triggered by ammonia excretion to a top-down control via feeding. Results also suggest that temperature is the strongest climate change driver due to its influence on the metabolism of poikilothermic organisms (e.g. zooplankton and bivalves), which ultimately causes a concomitant increase of top-down pressure on phytoplankton. Given the different thermal tolerance of cultured species, temperature is also critical to sort winners from losers, benefiting Crassostrea virginica over Mytilus edulis under the specific conditions tested in this numerical exercise. In general, it is predicted that bays with large rivers and high exchange with the open ocean will be more resilient under climate change when bivalve aquaculture is present. © 2016 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61230
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Fisheries and Oceans, Gulf Fisheries Centre, Science Branch, 343 Université Avenue, P.O. Box 5030, Moncton, NB, Canada; Marine Affairs Program, Dalhousie University, 1355 Oxford St., P.O. Box 15000, Halifax, NS, Canada; Institut des sciences de la mer (ISMER), Université du Québec à Rimouski (UQAR), 310, allée des Ursulines, CP 3300, Rimouski, QC, Canada
Recommended Citation:
Filgueira R.,Guyondet T.,Comeau L.A.,et al. Bivalve aquaculture-environment interactions in the context of climate change[J]. Global Change Biology,2016-01-01,22(12)