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Quantifying the effects of climate change and water abstraction on a population of barramundi (Lates calcarifer), a diadromous estuarine finfish

Tanimoto, M. and Robins, J. B. and O'Neill, M. F. and Halliday, I. A. and Campbell, A. B. (2012) Quantifying the effects of climate change and water abstraction on a population of barramundi (Lates calcarifer), a diadromous estuarine finfish. Marine and Freshwater Research, 63 (8). pp. 715-726. ISSN 13231650

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Article Link(s): http://dx.doi.org/10.1071/MF11246

Abstract

Many aquatic species are linked to environmental drivers such as temperature and salinity through processes such as spawning, recruitment and growth. Information is needed on how fished species may respond to altered environmental drivers under climate change so that adaptive management strategies can be developed. Barramundi (Lates calcarifer) is a highly prized species of the Indo-West Pacific, whose recruitment and growth is driven by river discharge. We developed a monthly age- and length-structured population model for barramundi. Monte Carlo Markov Chain simulations were used to explore the population's response to altered river discharges under modelled total licenced water abstraction and projected climate change, derived and downscaled from Global Climate Model A1FI. Mean values of exploitable biomass, annual catch, maximum sustainable yield and spawning stock size were significantly reduced under scenarios where river discharge was reduced; despite including uncertainty. These results suggest that the upstream use of water resources and climate change have potential to significantly reduce downstream barramundi stock sizes and harvests and may undermine the inherent resilience of estuarine-dependent fisheries. © 2012 CSIRO.

Item Type:Article
Business groups:Animal Science
Keywords:fish growth management population model recruitment river discharge Sea Bass simulation stock assessment climate change climate effect diadromy estuarine ecosystem finfish fishery management growth rate perciform population modeling quantitative analysis recruitment (population dynamics) spawning Indian Ocean Indonesia Pacific Ocean Pacific Ocean (Central) Pacific Ocean (West)
Subjects:Aquaculture and Fisheries > Fisheries > Fishery research
Aquaculture and Fisheries > Fisheries > Fishery meteorology. Climatic factors
Deposited On:19 Nov 2013 04:31
Last Modified:19 Nov 2013 04:31

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