极地研究2012，Vol.24Issue(2)：143-150,8.DOI:10.3724/SP.J.1084.2012.00143
利用沉积生物标志物分析南极普里兹湾浮游植物群落结构变化
USING BIOMARKERS IN SEDIMENTS AS INDICATORS TO REBUILD THE PHYTOPLANKTON COMMUNITY IN PRYDZ BAY,ANTARCTICA
摘要
Abstract
In this study, biomarkers, including brassicasterol, dinosterol and alkenone, in sediments were used as indicators to rebuild the changes in the phytoplankton community in the upper water columns of Prydz Bay, Antarctica. Records of biomarkers in surface and core sediment samples showed obvious changes at spatial and temporal scales. The biomass of phytoplankton determined from biomarkers ranged from 391.0 to 1 470. 6 ng o g-1. The ocean primary productivity has increased in Prydz Bay over the past 100 years and this increase was closely related to the changing climate in this area. The total content of biomarkers in surface sediments from Prydz Bay and its adjacent area ranged from 215.8 to 1 294. 3 ng o g-1. The rebuilt biomass of phytoplankton in Prydz Bay was higher than that outside the bay, which agreed with the distributions of chlorophyll a (Chl a) , organic carbon and biogenic silica measured in surface waters using in situ observations. This consistency supports the use of biomarkers in sediment to reflect biogeochemical processes in the upper seawater.关键词
南极普里兹湾/沉积物/生物标志物/初级生产力/浮游植物Key words
Prydz Bay, Antarctic, sediment, biomarker, primary productivity, phytoplankton引用本文复制引用
于培松,张海生,扈传昱,卢冰..利用沉积生物标志物分析南极普里兹湾浮游植物群落结构变化[J].极地研究,2012,24(2):143-150,8.基金项目
国家自然科学基金项目(40876104,41006118,41076134)资助 （40876104,41006118,41076134）
