Effects of two ways of production enhancements due to seasonal sea ice onto
marine ecosystem at higher latitudes
Masayuki Takahashi
Department of Biology, University of Tokyo
3-8-1 Komaba, Meguro-ku, Tokyo 153-0041, Japan
Tel: 81-3-5454-6627
Fax: 81-3-5454-4321
ctkmac@komaba.ecc.u-tokyo.ac.jp
There are two possible ways of enhancing production associated with the development of seasonal sea ice. One is the development of ice algal community under and inside of sea ice during the early spring, and the other is algal bloom occurring ice edge zone during recession of sea ice in the late spring. Both enhanced production could give strong food support to marine organisms in the early part of year, which could support to develop a large size of ecosystem compared with the ecosystem without such an enhanced production. Possible effective enhancemnt on production by seasonal sea ice could be
1) timing of food supply after winter with foodshortage and
2) actual amounts of foods.
