Modelling the potential impacts of climate change on the distribution of ichthyoplankton in the Yangtze Estuary, China

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Zhang , Z , Mammola , S , Xian , W & Zhang , H 2020 , ' Modelling the potential impacts of climate change on the distribution of ichthyoplankton in the Yangtze Estuary, China ' , Diversity and Distributions , vol. 26 , no. 1 , pp. 126-137 . https://doi.org/10.1111/ddi.13002

Title: Modelling the potential impacts of climate change on the distribution of ichthyoplankton in the Yangtze Estuary, China
Author: Zhang, Zhixin; Mammola, Stefano; Xian, Weiwei; Zhang, Hui
Contributor: University of Helsinki, Finnish Museum of Natural History
Date: 2020-01
Language: eng
Number of pages: 12
Belongs to series: Diversity and Distributions
ISSN: 1366-9516
URI: http://hdl.handle.net/10138/309072
Abstract: Aim Species distribution models (SDMs) are an effective tool to explore the potential distribution of terrestrial, freshwater and marine organisms; however, SDMs have been seldom used to model ichthyoplankton distributions, and thus, our understanding of how larval stages of fishes will respond to climate change is still limited. Here, we developed SDMs to explore potential impacts of climate change on habitat suitability of ichthyoplankton. Location Yangtze Estuary, China. Methods Using long-term ichthyoplankton survey data and a large set of marine predictor variables, we developed ensemble SDMs for five abundant ichthyoplankton species in the Yangtze Estuary (Coilia mystus, Hypoatherina valenciennei, Larimichthys polyactis, Salanx ariakensis and Chelidonichthys spinosus). Then, we projected their habitat suitability under present and future climate conditions. Results The ensemble SDMs had good predictive performance and were successful in estimating the known distributions of the five species. Model projections highlighted two contrasting patterns of response to future climates: while C. mystus will likely expand its range, the ranges of the other four species will likely contract and shift northward. Main conclusions According to our SDM projections, the five ichthyoplankton species that we tested in the Yangtze Estuary are likely to respond differently to future climate changes. These projected different responses seemingly reflect the differential functional attributes and life-history strategies of these species. To the extent that climate change emerges as a critical driver of the future distribution of these species, our findings provide an important roadmap for designing future conservation strategies for ichthyoplankton in this region.
Subject: 1181 Ecology, evolutionary biology
1172 Environmental sciences
climate change responses
distribution range shifts
ensemble forecasting
fish larvae
habitat suitability
species distribution modelling
PERFORMANCE
VALIDATION
ABUNDANCE
ACCURACY
LARVAE
FISHES
SAMPLE-SIZE
AREAS
PHENOLOGY
WATER
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