The adaptation of Arctic phytoplankton to low light and salinity in Kongsfjorden (Spitsbergen)

Shikai, CUI and Jianfeng, HE and Peimin, HE and Fang, Zhang and Ling, LIN and Yuxin, MA The adaptation of Arctic phytoplankton to low light and salinity in Kongsfjorden (Spitsbergen). Advances in Polar Science.

Abstract

The basic environmental variables and adaptability of phytoplankton communities to low light and salinity were studied using incubation experiments in Kongsfjorden, a high Arctic fjord of Spitsbergen, in late summer 2006. Chlorophylla concentrations were steady or decreased slightly in darkness after one day or one week incubation. Chlorophyll aconcentrations showed an initial decline when exposed to natural light after one week incubation in darkness, and then increased significantly. In a salinity experiment, the maximal growth rate was observed at a dilution ratio of 10%, however, higher dilution ratios (=40%) had an obvious negative effect on phytoplankton growth. We suggest that the phytoplankton communities in fjords in late summer are darkness adapted, and the inflow of glacial melt water is favorable for phytoplankton growth in the outer fjords where the influence of freshwater is limited.

Item Type: Article
Related URLs:
    Subjects: Natural Environment > Fauna
    Natural Resources and Industry > Fisheries
    Natural Environment > Space
    Organizations: Unspecified
    Date Deposited: 25 Jun 2012 14:07
    URI: http://library.arcticportal.org/id/eprint/1686

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