White background reduces the occurrence of staining, activates melanin-concentrating hormone and promotes somatic growth in barfin flounder
White background reduces the occurrence of staining, activates melanin-concentrating hormone and promotes somatic growth in barfin flounder
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DOI：
10.1016/j.aquaculture.2004.11.020
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发表时间：
2005-02
期刊：
影响因子：
4.5
通讯作者：
Takeshi Yamanome;M. Amano;A. Takahashi
中科院分区：
文献类型：
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作者：
Takeshi Yamanome;M. Amano;A. Takahashi
采用线性食物网模型研究了双壳贝类悬浮养殖的潜在承载力。调查涉及配置模型，目前的状态，使用所有可用的信息，然后通过引入双壳类养殖扰动食物网，直到达到预定的承载能力限制。这些承载力触发水平由生产承载力和生态承载力定义。生产承载力代表海湾中可支持的理论最大双壳类养殖量。这被定义为当生态系统崩溃到一个营养-浮游植物-文化-碎屑主导的系统。这一养殖水平被认为是整个海湾平均310 t km− 2 year − 1的双壳类养殖产量。相比之下，生态承载力被定义为在不显著改变食物网的主要能量通量或结构的情况下可以引入的文化水平。这一限制对应于海湾平均65 t km− 2 year − 1的双壳类养殖产量。引入大规模的双壳类养殖导致生态系统的平均营养水平下降，总产量，吞吐量和效率的增加，和双壳类取代浮游动物作为主要的草食动物在模拟系统。
An investigation into the potential carrying capacity of suspended bivalve culture was undertaken using a linear food web model. The investigation involved configuring the model for the present state using all available information, and then perturbing the food web by introducing the bivalve culture until pre-determined carrying capacity limits were achieved. These carrying capacity trigger levels were defined by the production carrying capacity and the ecological carrying capacity. The production carrying capacity represents the theoretical maximum bivalve culture that could be supported in the embayment. This is defined as when the ecosystem collapses down to a nutrient–phytoplankton–culture–detritus dominated system. This level of culture was found to be a yield of bivalve culture of 310 t km−2year−1averaged across the bays in question. By contrast, the ecological carrying capacity was defined as the level of culture that could be introduced without significantly changing the major energy fluxes or structure of the food web. This limit was found to correspond to a bivalve culture yield of 65 t km−2year−1averaged across the bays. Introducing the large-scale bivalve culture resulted in a decrease in the mean trophic level of the ecosystem, an increase in the total yield, throughput and efficiency, and the bivalves replaced zooplankton as the major grazers in the modelled system.