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首页> 外文期刊>Polar biology >Export or retention? Copepod abundance, faecal pellet production and vertical flux in the marginal ice zone through snap shots from the northern Barents Sea
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Export or retention? Copepod abundance, faecal pellet production and vertical flux in the marginal ice zone through snap shots from the northern Barents Sea

机译：导出还是保留？ Bar足类动物的丰度，粪便颗粒的产生和边缘冰区的垂直通量，来自巴伦支海北部的快照

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摘要

The balance between faecal pellet (FP) production and destruction that accelerates or diminishes vertical export has an effect on pelagic-benthic coupling, but is inadequately known. Production, export and retention of copepod FP were investigated in the marginal ice zone (MIZ) of the northern Barents Sea in July 2003. Older stages of Calanus finmarchicus and C. glacialis dominated the copepod biomass and FP production experiments revealed that more than 90% of the FP were produced in the upper 50 m where most of the copepods were located both day and night. Copepod pellets typically made up ～10% of the vertical particulate organic carbon flux, and significantly less than what was produced by the copepod community. This implies a variable but significant retention of pellets. We suggest that retention of FP is caused partly by the zooplankton themselves and that retention of FP is the rule rather than the exception in the Barents Sea, particularly during non-bloom scenarios.
机译：粪便颗粒（FP）的产生与破坏之间的平衡会加速或减少垂直出口，这对浮游-底栖动物的耦合有影响，但人们对此知之甚少。 2003年7月，在巴伦支海北部边缘冰区（MIZ）对co足类FP的生产，出口和保留进行了调查。在biomass足类生物质中，C鱼和早熟禾占主导地位，FP生产实验表明90％以上FP的产地在上层50 m处，而pe足类动物大多数白天和黑夜都位于该处。 pe足类颗粒通常占垂直颗粒有机碳通量的约10％，远低于co足类群落产生的水平。这暗示了颗粒的可变但显着的保留。我们建议，浮游生物的保留部分是由浮游动物本身引起的，而浮游生物的保留是规则，而不是巴伦支海的例外，特别是在非花海情况下。

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