Some consequences of distributional heterogeneity of phytoplankton and zooplankton1
Some consequences of distributional heterogeneity of phytoplankton and zooplankton1
复制标题
浮游植物和浮游动物分布异质性的一些后果1
DOI：
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发表时间：
1976
期刊：
影响因子：
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通讯作者：
E. Brooks
中科院分区：
文献类型：
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作者：
M. M. Mullin;E. Brooks
关于浮游植物的小规模分布和桡足类幼虫的发育阶段的信息与摄食和呼吸的估计相结合，以检查分布异质性对桡足类营养的影响。在4月和6月的两次航行中，平均情况是，温跃层上方水中的桡足类种群至少可以通过以各种大小的浮游植物为食来满足其新陈代谢需要。尽管在4月份抽样的61个点中有25个点的人口摄取率不足以满足其要求，但在满足要求的10个站点中，每个站点都至少有一个深度。平均而言，6月份的人口营养状况比4月份更好，但在12个站点中，有5个站点的温跃层以上没有深度，在温跃层上，摄入量等于呼吸。这种斑驳的持续时间将决定其对生态的影响。
Information on the small-scale distributions of phytoplankton and the developmental stages of the copepod Calanus pacificus was combined with estimates of ingestion and respiration to examine the consequences of distributional heterogeneity on the nutrition of the copepods. During two cruises, in April and June, the average situation was such that the population of copepods in the water above the thermocline could at least meet its metabolic requirement by feeding on all sizes of phytoplankton. Although the rate of ingestion by the population was insufficient to meet its requirement at 25 of the 61 points sampled in April, there was at least one depth at each of the ten stations where the requirement was being met. In June the population was better nourished, on the average, than in April, but at five of the twelve stations there was no depth above the thermocline at which ingestion equalled respiration. The duration of this patchiness will determine its ecological impact.