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

扫码查看

原文链接

国家科技期刊平台
NETL
NSTL
万方数据

外文摘要：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 krill.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 krill 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.

外文关键词：

Southern OceankrillEuphausia superbabiomassdataset

作者：

FANG Xiaoyue、HU Shugang、WANG Yanqing、ZHANG Zishang、TAO Zhencheng、YANG Guang

展开 >

作者单位：

College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China

Key Laboratory of Marine Ecology and Environmental Sciences,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China

Engineering Technology Department,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China

Qingdao University of Science and Technology,Qingdao 266042,China

Laboratory for Marine Ecology and Environmental Science,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China

University of Chinese Academy of Sciences,Beijing 10049,China

Center for Ocean Mega-Science,Chinese Academy of Sciences,Qingdao 266071,China

展开 >

出版年：

2024

DOI：

10.12429/j.advps.2024.0007

极地科学进展(英文版)

中国极地研究中心,国家海洋局极地考察办公室 (Polar Research Institute of China, Chinese Arctic and Antarctic Administration)

极地科学进展(英文版)

影响因子：0.145

ISSN：1674-9928

年,卷(期)：2024.35(3)