SEASONAL SEDIMENTATION OF PHYTOPLANKTON TO THE DEEP-SEA BENTHOS
SEASONAL SEDIMENTATION OF PHYTOPLANKTON TO THE DEEP-SEA BENTHOS
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DOI：
10.1038/302520a0
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发表时间：
1983-01-01
期刊：
影响因子：
64.8
通讯作者：
MANTOURA, RFC
中科院分区：
文献类型：
--
作者：
BILLETT, DSM;LAMPITT, RS;MANTOURA, RFC
直到最近，深海一直被认为是一个特别稳定的环境，1不受季节变化的影响。然而，大气风暴可能会导致深海洋流2和云状层3的周期性，而在马尾藻海4、5和巴拿马盆地6，已知进入深海的颗粒通量存在季节性。这里提出的证据表明，在温带半深海和深海深处，碎屑物质有类似的季节性脉动;这种物质似乎直接来自表层初级生产，并迅速沉入深海底栖生物。相当大的沉积发生在春季开花后不久，并持续整个初夏。这一过程是碳从真光层下降的途径，为深海和底栖生物群落提供了周期性的食物来源。
Until recently the deep sea was considered to be a particularly stable environment1, free from seasonal variations. However, atmospheric storms may cause periodicity in deep-ocean currents2and nepheloid layers3while seasonality in the particulate flux to the deep sea is known to occur in the Sargasso Sea4,5and Panama Basin6. Evidence is presented here of a similar seasonal pulse of detrital material to bathyal and abyssal depths in temperate latitudes; this material seems to be derived directly from the surface primary production and to sink rapidly to the deep-sea benthos. Considerable sedimentation occurs soon after the spring bloom and continues throughout the early summer. This process acts as a pathway for the descent of carbon from the euphotic zone, providing a periodic food source for the deep pelagic and benthic communities.