DOI: 10.1111/gcb.12545
论文题名: Environmental change drives long-term recruitment and growth variation in an estuarine fish
作者: Morrongiello J.R. ; Walsh C.T. ; Gray C.A. ; Stocks J.R. ; Crook D.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 6 起始页码: 1844
结束页码: 1860
语种: 英语
英文关键词: Climate change
; Density dependence
; Drought
; Hierarchical model
; Hydrology
; Life history
; Macquaria colonorum
; Otolith biochronology
; Percichthyidae
; Primary and secondary production
; Zero-inflated negative binomial mixed model
Scopus关键词: biochronology
; climate change
; climate effect
; drought
; environmental change
; environmental conditions
; estuarine ecosystem
; fish
; growth rate
; hierarchical system
; juvenile
; life history
; population density
; recruitment (population dynamics)
; spawning
; Australia
; Macquaria colonorum
; Percichthyidae
; Pisces
; animal
; Australia
; biological model
; climate change
; environment
; estuary
; female
; growth, development and aging
; male
; Perciformes
; physiology
; population dynamics
; season
; temperature
; Animals
; Climate Change
; Environment
; Estuaries
; Female
; Male
; Models, Biological
; Perciformes
; Population Dynamics
; Seasons
; Temperature
; Victoria
英文摘要: How individuals respond to environmental change determines the strength and direction of biological processes like recruitment and growth that underpin population productivity. Ascertaining the relative importance of environmental factors can, however, be difficult given the numerous mechanisms through which they affect individuals. This is especially true in dynamic and complex estuarine environments. Here, we develop long-term otolith-based indices of recruitment and growth for estuary perch Percalates colonorum (Bemm River, Australia), to explore the importance of intrinsic (individual, demographic) and extrinsic (hydrologic, climatic, density-dependent) factors in driving estuarine fish productivity. Analyses involved a novel zero-inflated specification of catch curve regression and mixed effects modelling. The 39 years of recruitment and 46 years of growth data, spanning a period of environmental change including severe drought, displayed considerable inter-annual variation. Recruitment success was strongly related to high freshwater inflows during the spawning season, suggesting that these conditions act as spawning cues for adults and potentially provide favourable conditions for larvae. Individuals displayed age-dependent growth, with highest rates observed at younger ages in years characterized by warm temperatures, and to a lesser degree, greater magnitude base inflow conditions. We detected systematic among-year-class growth differences, but these were not attributable to year class strength, suggesting that environmental conditions experienced by individuals as juveniles can have long-lasting effects of greater importance to population productivity than density-dependent growth responses. The primacy of temperature in driving growth variation highlights that under-appreciated climatic variation can affect estuarine fish productivity through direct physiological and indirect food web mechanisms. We predict that climatic warming will promote individual growth in southerly populations of P. colonorum but concurrently limit recruitment due to forecast reductions in spawning season river discharge. Disparate trait responses are likely in other fishes as they respond to multiple and changing environmental drivers, making predictions of future population productivity challenging. © 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/62184
Appears in Collections: 影响、适应和脆弱性
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作者单位: Wealth from Oceans Flagship, CSIRO Marine and Atmospheric Research, GPO Box 1538, Hobart, TAS, 7001, Australia; Batemans Bay Fisheries Centre, NSW Department of Primary Industries, PO Box 17, Batemans Bay, NSW, 2536, Australia; WildFish Research, Sydney Institute of Marine Science, Building 19 Chowder Bay Road, Mosman, NSW2088, Australia; Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, NT, 0909, Australia
Recommended Citation:
Morrongiello J.R.,Walsh C.T.,Gray C.A.,et al. Environmental change drives long-term recruitment and growth variation in an estuarine fish[J]. Global Change Biology,2014-01-01,20(6)