Zooplankton volume trends off Peru between 1964 and 2001
Zooplankton volume trends off Peru between 1964 and 2001
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DOI：
10.1016/j.icesjms.2004.03.027
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发表时间：
2004-06-01
影响因子：
3.3
通讯作者：
Guevara-Carrasco, R
中科院分区：
文献类型：
--
作者：
Ayón, P;Purca, S;Guevara-Carrasco, R
浮游动物样品收集Hensen网（300针）垂直拖曳从50米的深度在57调查沿着秘鲁海岸在冬季和夏季从1961年至2001年。在一般情况下，总浮游动物体积的纬度分布表现出最高值内60海里（I I I公里）的海岸。主要是在1960年代，在南纬4 - 6度和南纬14 - 16度之间发现了大量浮游动物，与狭窄的大陆架区域相吻合。1990年代，在这些区域观察到浮游动物数量急剧下降。从长期来看，秘鲁外海的浮游动物数量在“寒冷”的几十年中，特别是在1960年代，要高于“温暖”的几十年。这项研究支持以前在秘鲁沿海上升流观察到的制度转变，并与在太平洋和北大西洋盆地其他地方的低层和高层营养水平观察到的全球变化一致。(C)2004年由爱思唯尔有限公司代表国际海洋勘探理事会出版。
Zooplankton samples were collected by Hensen net (300 pin) vertical hauls from a depth of 50 m in 57 surveys along the Peruvian coast during winter and summer from 1961 to 2001. In general, the latitudinal distribution of total zooplankton volumes showed highest values within 60 nmi (I I I km) of the coast. Predominantly during the 1960s, high zooplankton volumes were found between 4degreesS-6degreesS and 14degreesS-16degreesS, coinciding with narrow continental shelf areas. Strong declines of zooplankton volumes were observed in these regions in the 1990s. In the long term, zooplankton volumes off Peru were higher during "cold" decades, particularly in the 1960s, than during "warm" decades. This research supports the regime-shift previously observed in the Peruvian coastal upwelling, and is in agreement with global changes observed in lower and upper trophic levels elsewhere in the Pacific and North Atlantic basins. (C) 2004 Published by Elsevier Ltd on behalf of International Council for the Exploration of the Sea.