The Contributions of Sea Ice Algae to Antarctic Marine Primary Production
The Contributions of Sea Ice Algae to Antarctic Marine Primary Production
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DOI：
10.1093/icb/41.1.57
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Michael P. Lizotte
中科院分区：
文献类型：
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作者：
Michael P. Lizotte
概要。由于海冰中微藻的生长，南大洋季节性冰层覆盖的区域具有独特的生态系统。虽然在南大洋的大多数近海区域，海冰微藻的产量每年都超过浮游植物的产量，但海冰藻类大量繁殖的时间和分布与浮游植物有很大的不同。因此，海冰藻类在水体生物生产力低或可忽略不计的季节和地区为高营养级生物提供食物资源。海冰融化后，生物物质从海冰流向水柱和底栖生物，一些藻类物种已知会在随后的浮游植物大量繁殖中出现。对浮冰和近海浮游生物中藻类物种的审查表明，优势常见于三个物种：南极棕囊藻、柱状脆藻和短脆藻。这些物种的优势程度是海冰群落演替过程的产物，这可能是确定它们对南大洋的生物地球化学贡献及其在边缘冰区繁殖的能力的重要因素。
SYNOPSIS. The seasonally ice-covered regions of the Southern Ocean have distinctive ecological systems due to the growth of microalgae in sea ice. Although sea ice microalgal production is exceeded by phytoplankton production on an annual basis in most offshore regions of the Southern Ocean, blooms of sea ice algae differ considerably from the phytoplankton in terms of timing and distribution. Thus sea ice algae provide food resources for higher trophic level organisms in seasons and regions where water column biological production is low or negligible. A flux of biogenic material from sea ice to the water column and benthos follows ice melt, and some of the algal species are known to occur in ensuing phytoplankton blooms. A review of algal species in pack ice and offshore plankton showed that dominance is common for three species: Phaeocystis antarctica, Fragilariopsis cylindrus and Fragilariopsis curta. The degree to which dominance by these species is a product of successional processes in sea ice communities could be an important in determining their biogeochemical contribution to the Southern Ocean and their ability to seed blooms in marginal ice zones.