摘要
中型浮游动物是北极海域生态系统的重要组成成分,在生物地球化学循环中起着重要作用。2017年8月,调查了北极Svalbard地区Kings Bay海域中型浮游动物的种类组成及群落特征。结果表明:Kings Bay海域共检出中型浮游动物19种,桡足类是最主要类群,占总种类的57.9%,浮游动物的种类数从湾口到湾顶总体呈现逐渐减少的趋势;浮游动物的优势种为隐长腹剑水蚤(Oithona decipiens)、飞马哲水蚤(Calanus finmarchicus)和短角长腹剑水蚤(Oithona brevicornis),占浮游动物群落丰度比分别为48.0%、6.1%和4.3%,隐长腹剑水蚤占绝对优势;各站位三者丰度之和占比均超过47%;浮游动物丰度和湿重生物量均值分别为1241.5 ind·m^(-3)和290.8 mg·m^(-3),丰度分布趋势主要受优势种丰度影响,总体呈现为湾口到湾顶逐渐增多的趋势,生物量分布整体差异不大,湾顶稍高于湾口;该海域浮游动物生物多样度、均匀度和丰富度指数均值分别为2.36、0.57和1.65,湾内浮游动物多样度和丰富度差别不大,湾口浮游动物的多样度和丰富度稍高于湾内区域;被囊动物(Tunicata)和腔肠动物(Coelenterata)主要在靠近湾口区域出现,与湾口水系复杂、受北大西洋暖流等影响较大有关;湾内浮游动物丰度高于湾口,与"气候变暖—海冰融化—湾内外源营养物质增加—浮游植物增多—浮游动物生长繁殖提升"这一连锁反应有关。
Mesozooplankton,important component of Arctic ecosystems,play key roles in the biogeochemical cycles. The species composition and community characteristics of mesozooplankton were surveyed in Kings Bay area of Svalbard in August 2017. Results showed that 19 species of mesozooplankton were recorded. Copepods were the dominant group,accounting for 57.9% of the total mesozooplankton species. The species number of mesozooplankton gradually decreased from the mouth of the bay to the inside of the bay. The dominant species of mesozooplankton were Oithona decipiens,Calanus finmarchicus and Oithona brevicornis,accounting for 48. 0%,6. 1%and 4.3% of the total abundance,respectively. The abundance of those three species accounted for more than 47% of total mesozooplankton abundance in each sampling station. The mean abundance and wet biomass of zooplankton were 1241.5 ind·m^-3 and 290.8 mg·m^-3,respectively.The mesozooplankton abundance,which was mainly influenced by dominant species,increased from the mouth of the bay to the inside of the bay. The mean Shannon diversity index,Pielou evenness index and Margalef richness index of mesozooplankton were 2. 36,0. 57 and 1. 65,respectively. Tunicata and Coelenterata occurred mainly in the mouth of the bay,which might be influenced by the north Atlantic current. The abundance of mesozooplankton was higher in the inside of the bay than in the mouth of the bay,possibly linked to the ecological chain reaction of climate change.
作者
邓邦平
蒋晓山
周红宏
曹叔楠
张昊飞
王肖波
王腾
DENG Bang-ping;JIANG Xiao-shan;ZHOU Hong-hong;CAO Shu-nan;ZHANG Hao-fei;WANG Xiao-bo;WANG Teng(East China Sea Environmental Monitoring Center,SOA,Shanghai 200137,China;Key Laboratory of Integrated Monitoring and Applied Technology for Marine Harmful Algal Blooms,SOA,Shanghai 200137,China;Polar Research Institute of China,200136,China)
出处
《生态学杂志》
CAS
CSCD
北大核心
2019年第2期486-491,共6页
Chinese Journal of Ecology
基金
国家重点研发计划"海洋环境安全保障"重点专项(2017YFC1404500)
海洋公益性行业科研专项经费项目(201505008)资助
关键词
北极黄河站
中型浮游动物
群落特征
丰度
Arctic Yellow River Station
mesozooplankton
community structure
abundance.
