DISCARDED APPENDICULARIAN HOUSES AS SOURCES OF FOOD, SURFACE HABITATS AND PARTICULATE ORGANIC-MATTER IN PLANKTONIC ENVIRONMENTS
DISCARDED APPENDICULARIAN HOUSES AS SOURCES OF FOOD, SURFACE HABITATS AND PARTICULATE ORGANIC-MATTER IN PLANKTONIC ENVIRONMENTS
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DOI：
10.4319/lo.1976.21.1.0014
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发表时间：
1976-01-01
影响因子：
4.5
通讯作者：
ALLDREDGE, AL
中科院分区：
文献类型：
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作者：
ALLDREDGE, AL
使用水肺的观察表明，在加利福尼亚湾[墨西哥]，阑尾生物产生的宏观有机聚集体的密度达到了 44-1130 m-3。尽管这些聚集体占总颗粒碳的比例不到 5%，但它们的 C:N 比是周围海水中颗粒的两倍。总颗粒物的碳氮比随着阑尾虫产生的聚集体的密度的增加而直接增加。聚集体被磷虾幼虫、桡足类和食浮游鱼类广泛用作食物。这种聚集体通过将空间异质性和物理结构引入以前被认为是非结构化的环境中，影响浮游生物的适应策略和分布，并可能显着改变颗粒有机物的化学成分。
Observations using scuba reveal that macroscopic organic aggregates produced by appendicularians reached densities of 44-1130 m-3 in the Gulf of California [Mexico]. Though these aggregates constituted less than 5% of total particulate C, their C:N ratio was twice that of particles in the surrounding seawater. The C:N ratio of the total particulate matter increased directly with the density of appendicularian produced aggregates. Aggregates were utilized extensively as food by euphausiid larvae, copepods and planktivorous fish. Such aggregates affect the adaptive strategies and distribution of the plankton by introducing spatial heterogeneity and physical structure into an environment previously considered unstructured and may substantially alter the chemical composition of particulate organic matter.