Effect of permanent sea ice cover and different nutrient regimes on the phytoplankton succession of fjords of the Vestfold Hills Oasis, eastern Antarctica

被引：31

作者：

McMinn, A ^{[1
]}

Bleakley, N

Steinburner, K

Roberts, D

Trenerry, L

机构：

[1] Monash Univ, Dept Geog & Environm Sci, Ctr Palynol & Palaeoecol, Clayton, Vic 3168, Australia

[2] Univ Tasmania, Inst Antarctic & So Ocean Studies, Hobart, Tas 7001, Australia

来源：

JOURNAL OF PLANKTON RESEARCH | 2000年 / 22卷 / 02期

关键词：

D O I：

10.1093/plankt/22.2.287

中图分类号：

Q17 [水生生物学];

学科分类号：

071004 ;

摘要：

Early season phytoplankton communities in both Omega and Taynaya Bays are characterized by diatoms sedimenting out of the overlying sea ice. Initial nitrate, phosphate and silicate levels are high and the bay waters are covered with ice and well mixed. In Taynaya Bay the ice cover is retained throughout the season while Omega Bay is ice free for 6-8 weeks. After ice break out in Omega Bay, the phytoplankton community changes from one dominated by diatoms to one dominated by the phytoflagellates, Pyramimonas spp., Cryptomonas sp. and Gymnodinium sp. In Taynaya Bay the ice remained and even though phytoflagellates became more common, diatoms still dominated. These differences in community composition result from differences in light climate, extent of stratification and nutrient levels.

引用

页码：287 / 303

页数：17

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