Contribution of zooplankton grazing to the decline of a Ceratium bloom
Contribution of zooplankton grazing to the decline of a Ceratium bloom
复制标题
浮游动物的放牧对角藻藻华减少的贡献
DOI：
10.4319/lo.1991.36.6.1091
复制
发表时间：
1991
影响因子：
4.5
通讯作者：
T. Nielsen
中科院分区：
文献类型：
--
作者：
T. Nielsen
优势种蜡蚧的生长速率和垂直分布。在丹麦沃茨的8 - 9月水华期间进行了调查。研究了潜在捕食者的垂直分布。由于纤毛虫的放牧压力很低。实验室实验表明，只有最大的桡足类物种（钩胸刺水蚤和典型刺水蚤）和枝角类才能吃角藻。在调查期间，Copcpod生物量几乎保持不变，但枝藻生物量增加，并最终占主导地位的中型浮游动物。这些种类的垂直分布与角藻属的垂直分布相关。甲壳类动物每天吃掉30%到70%的角藻产量，因此大部分角藻细胞在水中被吃掉，而不是沉积到底部，
Growth rates and vertical distributions of dominant Cerutium spp. were investigated during their August-September bloom in Danish waters. Vertical distributions of potential predators were also studied. Grazing pressure due to ciliates was low. Laboratory experiments show that only the largest copepod species (Centropages hamatus and Centropages typicus) and cladocerans are able to graze Ceratium. Copcpod biomass remained almost constant during the investigation period, but cladoceran biomass increased and eventually dominated the mesozooplankton. The vertical distribution of these species was correlated with that of Ceratium spp. The crustaceans grazed from 30 to 70% of the Cerutium production per day, so that a large fraction of the Ceratium cells was grazed in the water rather than sedimenting to the bottom,