首页|The potential distribution of adult Antarctic krill in the Amundsen Sea
The potential distribution of adult Antarctic krill in the Amundsen Sea
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国家科技期刊平台
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Antarctic krill is the key species of ecological system in the Amundsen Sea.At present,the suitable distribution is unobtainable by scientific surveys or data from the fishery.In this paper,the maximum entropy algorithm(Maxent)was used to obtain the potential distribution of adult Antarctic krill in order to provide useful information and reasonable reference for the policy on protecting potential krill habitats around the Amundsen Sea.Occurrence points and 17 environmental variables were used to simulate the distributions.Results show that the high and moderate suitable habitats lie between 65°S and 72°S in the Amundsen Sea.The high suitable habitat accounts for 8.1％of the total area of the Amundsen Sea.The sea ice persistence(ICE),total phytoplankton(PHYC),and the minimum value of dissolved iron(Fe_min)are the three dominant contributors to the model.Results from the response curves show that Antarctic krill preferred habitats with ICE of 0.42-0.93,PHYC of 2.48-2.77 mmol/m3 and Fe min of(7.10×10-5)-(9.45×10-5)mmol/m3.Positive trends existed in the PHYC of the high and moderate suitable habitat,and a positive trend existed in the Fe min of moderate suitable habitat.However,the probability of presence of Antarctic krill will decrease if the increase of the PHYC and Fe min continues.
krillAmundsen SeaMaxentpotential distribution
Jianlong FENG、Lulu LIU、Qiulin LIU、Liang ZHAO
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Key Laboratory of Marine Resource Chemistry and Food Technology(TUST),Ministry of Education,Tianjin University of Science and Technology,Tianjin 300457,China
College of Marine and Environmental Science,Tianjin University of Science and Technology,Tianjin 300457,China
National Marine Data&Information Service,Tianjin 300457,China
Impact and Response of Antarctic Seas to Climate Change from Polar Research Institute of ChinaNational Science Foundation of TianjinNational Natural Science Foundation of China
国家科技期刊平台
NSTL
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