Mesozooplankton grazing in the coastal Gulf of Alaska: Neocalanus spp. vs. other mesozooplankton
Mesozooplankton grazing in the coastal Gulf of Alaska: Neocalanus spp. vs. other mesozooplankton
复制标题
阿拉斯加湾沿岸的中生浮游动物：Neocalanus spp.
DOI：
10.1093/icesjms/fsm175
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发表时间：
2008
影响因子：
3.3
通讯作者：
R. Sato
中科院分区：
文献类型：
--
作者：
Hongbin Liu;M. Dagg;J. Napp;R. Sato
刘洪，达格，J.M.，Napp，J.M.，和Sato，R. 2008.阿拉斯加海湾沿岸的中型浮游动物吃草：新哲水蚤属。vs.其他中型浮游动物。- 海洋科学杂志，65：351- 360.三种大型哲水蚤桡足类，新哲水蚤flemingeri，新哲水蚤plumchrus和新哲水蚤cristatus，占主导地位的春季生物量在亚北极太平洋的中型浮游动物。我们比较了放牧的影响，新哲水蚤物种的浮游植物与放牧的中型浮游动物群落的其余部分在阿拉斯加湾的沿海和陆架沃茨在2003年春季和夏季。新哲水蚤属和其他中型浮游动物主要以大于20微米的颗粒为食，浮游植物以较小尺寸的颗粒为食（外陆架区为20微米，叶绿素a浓度为20微米），内陆架区和中陆架区的浮游植物日产量通常大于5毫克/立方米，大型硅藻大量繁殖。在夏季，没有新哲水蚤。在表层，中型浮游动物的摄食占整个大陆架浮游植物产量的很小比例。
Liu, H., Dagg, J. M., Napp, J. M., and Sato, R. 2008. Mesozooplankton grazing in the coastal Gulf of Alaska: Neocalanus spp. vs. other mesozooplankton. - ICES Journal of Marine Science, 65: 351-360.Three species of large calanoid copepod, Neocalanus flemingeri, Neocalanus plumchrus, and Neocalanus cristatus, dominate the spring biomass of mesozooplankton in the Subarctic Pacific. We compared the grazing impact of Neocalanus species on phytoplankton with grazing by the remainder of the mesozooplankton community in the coastal and shelf waters of the Gulf of Alaska during spring and summer 2003. Neocalanus spp. and other mesozooplankton fed mainly on particles >20 μm, and phytoplankton in the smaller size-fractions ( 20 μm in the outer-shelf region, where chlorophyll a concentrations were 20 μm daily phytoplankton production in the inner- and mid-shelf regions where chlorophyll a concentrations were typically >5 mg m −3 with blooms of large diatoms. In summer, without Neocalanus spp. in the surface layer, mesozooplankton grazing accounted for a very small proportion of phytoplankton production across the whole shelf.