The seasonal abundance of the copepodite stages of Calanus helgolandicus and Pseudocalanus elongatus off Plymouth
The seasonal abundance of the copepodite stages of Calanus helgolandicus and Pseudocalanus elongatus off Plymouth
复制标题
普利茅斯附近的 Calanus helgolandicus 和 Pseudocalanus elongatus 桡足类阶段的季节性丰度
DOI：
10.1017/s0025315400032677
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发表时间：
1993
影响因子：
1.2
通讯作者：
A. Duncan
中科院分区：
文献类型：
--
作者：
E. Green;R. Harris;A. Duncan
1989年，在英吉利海峡的一个站记录了Calanus helgolandicus Claus（桡足目：哲水蚤）和Pseudocalanus elongatus Boeck（桡足目：哲水蚤）的6个桡足类阶段（CI-CVI）的相对丰度。早期阶段的丰度有明显的季节变化。从无节幼体增加招聘对应于这两个物种的初级生产在今年年初上升，生产小CI丰度峰值在3月。无节幼体发育的主要时期是在4月/5月春季开花后。在季节性高峰期的CI和CII阶段通常形成40%的桡足类的这些物种，但在其他时间稀缺。从5月到8月，哲水蚤和拟哲水蚤的碳重分别下降了38%和21%，表明无节幼体的食物限制增加。夏季主要在低丰度的CIV和CV阶段度过。
The relative abundance of the six copepodite stages (CI-CVI) of Calanus helgolandicus Claus (Copepoda: Calanoida) and Pseudocalanus elongatus Boeck (Copepoda: Calanoida) was recorded at a station in the English Channel throughout 1989. There was a pronounced seasonal variation in the abundance of the early stages. Increased recruitment from the nauplii corresponded in both species to rising primary production early in the year, producing small CI abundance peaks in March. The major period of naupliar development occurred after the April/May spring bloom. During seasonal peaks the CI and CII stages typically formed 40% of the copepodites of these species but were scarce at other times. The body carbon weight of Calanus and Pseudocalanus CIs decreased by 38% and 21% respectively from May to August, indicating an increase in food limitation for the nauplii. Summer was passed predominantly in the CIV and CV stage at low abundances.