期刊
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
卷 48, 期 4-5, 页码 1063-1068出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0967-0645(00)00109-0
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Zooplankton biomass and the carbon content of vertical migrants were measured in the NE Atlantic (36.5 degreesN, 19.2 degreesW) between 11 and 18 July 1996 as part of the Plankton Reactivity in the Marine Environment (PRIME) programme. The increase in zooplankton biomass near the surface (0-100 m) at night compared to during the day suggested that diel vertical migration was an important feature at this site. For three species of vertically migrant copepods, Pleuromamma pisekii, P. gracilis and P. abdominalis, the carbon content of individuals collected at dusk was significantly less than for individuals collected at dawn, with this reduction being 6.2, 7.3 and 14.8%, respectively. This dawn-dusk reduction in carbon content is consistent with the diel pattern of feeding and fasting exhibited by vertical migrants and supports the suggestion that migrating zooplankton will cause an active export of carbon from the surface layers. (C) 2001 Elsevier Science Ltd. All rights reserved.
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