文献类型：期刊文献

中文题名：Phytoplankton composition and its ecological effect in subsurface cold pool of the northern Bering Sea in summer as revealed by HPLC derived pigment signatures

英文题名：Phytoplankton composition and its ecological effect in subsurface cold pool of the northern Bering Sea in summer as revealed by HPLC derived pigment signatures

作者：Zhuang Yanpei[1];Jin Haiyan[1,2];Li Hongliang[1];Chen Jianfang[1,2];Wang Bin[1];Chen Fajin[3];Bai Youcheng[1];Lu Yong[1];Tian Shichao[1]

机构：[1]State Ocean Adm, Inst Oceanog 2, Lab Marine Ecosyst & Biogeochem, Hangzhou 310012, Zhejiang, Peoples R China;[2]State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China;[3]Guangdong Ocean Univ, Coll Ocean & Meteorol, Zhanjiang 524088, Peoples R China

年份：2014

卷号：33

期号：6

起止页码：103

中文期刊名：Acta Oceanologica Sinica

外文期刊名：ACTA OCEANOLOGICA SINICA

收录：SCI-EXPANDED(收录号：WOS:000336422900013)、CSTPCD、、Scopus(收录号：2-s2.0-84905445247)、WOS、CSCD、CSCD2013_2014

基金：Foundation item: The National Natural Science Foundation of China under contract Nos 41276198, 41076135 and 41003036; the Scientific Research Fund of Second Institute of Oceanography, SOA under contract Nos JG1323 and JG1023; the Chinese Polar Environment Comprehensive Investigation and Assessment Programs under contract Nos 20130403 and 20130304.

语种：英文

中文关键词：pigment;phytoplankton community structure;CHEMTAX;northern Bering Sea shelf;subsurface cold pool

外文关键词：pigment; phytoplankton community structure; CHEMTAX; northern Bering Sea shelf; subsurface cold pool

中文摘要：CHEMTAX analysis of high-performance liquid chromatography （HPLC） pigment was conducted to study phytoplankton community structure in the northern Bering Sea shelf, where a seasonal subsurface cold pool emerges. The results showed that fucoxanthin （Fuco） and chlorophyll a （Chl a） were the most abundant diagnostic pigments, with the integrated water column values ranging from 141 to 2160 μg/m2 and 477 to 5 535 μg/m2, respectively. Moreover, a diatom bloom was identified at Sta. BB06 with the standing stock of Fuco up to 9214 μg/m3. The results of CHEMTAX suggested that the phytoplankton community in the northern Bering Sea shelf was dominated by diatoms and chrysophytes with an average relative contribu- tion to Chl a of 80% and 12%, respectively, followed by chlorophytes, dinoflagellates, and cryptophytes. Dia- toms were the absolutely dominant algae in the subsurface cold pool with a relative contribution exceeding 90%, while the contribution of chrysophytes was generally higher in oligotrophic upper water. Additionally, the presence of a cold pool would tend to favor accumulation of diatom biomass and a bloom that occurred beneath the halocline would be beneficial to organic matter sinks, which suggests that a large part of the phytoplankton biomass would settle to the seabed and support a rich benthic biomass.

外文摘要：CHEMTAX analysis of high-performance liquid chromatography (HPLC) pigment was conducted to study phytoplankton community structure in the northern Bering Sea shelf, where a seasonal subsurface cold pool emerges. The results showed that fucoxanthin (Fuco) and chlorophyll a (Chl a) were the most abundant diagnostic pigments, with the integrated water column values ranging from 141 to 2 160 mu g/m(2) and 477 to 5 535 mu g/m(2), respectively. Moreover, a diatom bloom was identified at Sta. BB06 with the standing stock of Fuco up to 9 214 mu g/m(3). The results of CHEMTAX suggested that the phytoplankton community in the northern Bering Sea shelf was dominated by diatoms and chrysophytes with an average relative contribution to Chl a of 80% and 12%, respectively, followed by chlorophytes, dinoflagellates, and cryptophytes. Diatoms were the absolutely dominant algae in the subsurface cold pool with a relative contribution exceeding 90%, while the contribution of chrysophytes was generally higher in oligotrophic upper water. Additionally, the presence of a cold pool would tend to favor accumulation of diatom biomass and a bloom that occurred beneath the halocline would be beneficial to organic matter sinks, which suggests that a large part of the phytoplankton biomass would settle to the seabed and support a rich benthic biomass.