Distribution and abundance of krill in various areas of the Southern Ocean: dataset compilation based on samples collected in CHINARE during 2009-2019  

作　　者：FANGGXiaoyue HU Shugang WANG Yanqing HANG Zishang TAO Zhencheng YANG Guang 

机构地区：[1]College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China [2]Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [3]Engineering Technology Department,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China [4]Qingdao University of Science and Technology,Qingdao 266042,China [5]Laboratory for Marine Ecology and Environmental Science,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China [6]Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China [7]University of Chinese Academy of Sciences,Beijing 10049,China

出　　处：《Advances in Polar Science》2024年第3期370-384,共15页极地科学进展（英文版）

基　　金：supported by Marine S&T Fund of Shandong Province for Qingdao Marine Science and Technology Center(Grant no.2022QNLM030002-1);National Natural Science Foundation of China(Grant no.42276238);National Polar Special Program“Impact and Response of Antarctic Seas to Climate Change”(Grant no.IRASCC 01-02-01D)and Taishan Scholars Program.

摘　　要：This study investigates the composition,abundance,and basic biological parameters of krill in Prydz Bay,Antarctic Peninsula and Amundsen Sea by analyzing samples and environmental data from the Chinese National Antarctic Research Expeditions conducted between 2009/2010 and 2019/2020.The predominant krill species observed were Euphausia superba,Euphausia crystallorophias,and Thysanoessa macrura.T.macrura,although the most widespread,exhibited the lowest mean abundance 9.96 ind:(1000 m^(-3))and biomass 0.31 g(1000 m^(-3)),predominantly found in low-latitude regions of the Amundsen Sea while E.crystallorophias was most concentrated in polynyas of Prydz Bay.E.superba,with an average abundance of 34.05 ind(1000 m^(-3))and biomass of 11.80 g:(1000 m^(-3)),was mainly distributed in the Antarctic Peninsula and Prydz Bay.This study also identified regional variations in mean body length and frequency distributions of kril.The relationship between krill body length and wet weight followed a power-law pattern.Regional differences were observed in the relationship between krill abundance,biomass,and environmental factors with varying correlations.In the Amundsen Sea,no significant correlation was found between krill abundance and environmental factors.Notably,E.crystallorophias in Prydz Bay demonstrated a significant positive correlation with chlorophyll a concentration,while T.macrura abundance and biomass in the Antarctic Peninsula exhibited a significant negative correlation with ice-free days.The findings contribute valuable regional data on krll distribution,abundance,and biomass in the Southern Ocean,serving as foundational information for the conservation of the Southern Ocean ecosystem and Antarctic krill fishery management on a circumpolar scale.

关 键 词：Southern Ocean KRILL Euphausia superba biomass DATASET 

分 类 号：S931[农业科学—渔业资源]