Production and Fate of Dissolved and Particulate Organic Matter During Antarctic Phytoplankton Blooms

From the abstract of one of the papers:Phytoplankton biomass and speciation were monitored at an inshore site near Davis Station, East Antarctica during three consecutive summer seasons (December-February, 1992-5). Four distinct phytoplankton assemblages were identified in which the dominant species were: Phaeocystis sp., an undescribed Cryptomonas species, Thalassiosira dichotomica, and a mixed assemblage containing Fragilariopsis spp. and Nitzschia spp. Little interannual consistency was found in either the timing of the appearance or disappearance of the various assemblages. Similarly, the seasonal trends in biomass varied dramatically from year to year. Variations in the phytoplankton community can be ascribed, to some extent, to the random variation in a number of factors, including the date of fast ice break out, water column stratification, temperature and salinity, zooplankton grazing and strong winds. Periods of strong wind result in the introduction of offshore or deeper water masses into the shallow inshore environment, where the physical and chemical conditions allow blooms to develop.A number of the papers listed in the reference section are available as pdf's in the download section.

来自某篇论文的摘要：在东南极洲戴维斯站附近的一个近岸站点，连续三个夏季（1992-1995年12月至次年2月）对浮游植物生物量及种类组成进行了监测。研究识别出四个不同的浮游植物群落，其优势种分别为：棕囊藻属（Phaeocystis sp.）、一种未描述的隐藻属（Cryptomonas）物种、二歧海链藻（Thalassiosira dichotomica），以及包含脆杆藻属（Fragilariopsis spp.）和菱形藻属（Nitzschia spp.）的混合群落。各群落出现或消失的时间在年际间几乎无一致性；同样，生物量的季节趋势每年也存在显著差异。浮游植物群落的变化在一定程度上可归因于多种因素的随机波动，包括固定冰破裂日期、水柱分层、温度与盐度、浮游动物摄食及强风。强风期间，外海或深层水体被带入浅近岸环境，该环境的理化条件有利于水华形成。参考文献部分列出的多篇论文可在下载区获取PDF版本。