Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
Dead heat: copepod carcass occurrence along the Japanese coasts and implications for a warming ocean
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平热：日本沿海桡足类尸体的出现及其对海洋变暖的影响
DOI：
10.1093/icesjms/fsz017
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发表时间：
2019
影响因子：
3.3
通讯作者：
Takahashi K
中科院分区：
文献类型：
--
作者：
Tang K W;Ivory J A;Shimode S;Nishibe Y;Takahashi K
了解全球变暖对海洋浮游动物的影响是正确管理海洋资源和渔业的关键。这对日本来说尤其紧迫，因为在过去十年中，日本沿海水温的上升速度超过了全球平均水平。传统的采样和监测方案由于忽视了浮游动物在现场的生命状态，因此产生了关于生态系统状况的不完整信息。我们发现，海洋桡足类尸体是无处不在的沿着纬度梯度的34-39°N的日本海岸。平均而言，4.4-18.1%的主要桡足类属（蜱螨属、拟哲水蚤属、长刺水蚤属和拟哲水蚤属）的个体是尸体，相当于19-250 µg Cm −3。较高比例的死亡桡足类往往发生在较高的水温，温度依赖性非捕食死亡率。尸体的出现可能代表了桡足类生产的传统捕食为基础的食物链的损失。平均而言，49.5%的尸体碳将通过细菌呼吸作用在水柱中分解，其余的可能会输出到海底。日本海岸的持续变暖预计将加速非捕食性桡足类动物的死亡，对当地海洋食物网的影响尚不清楚。
Understanding global warming effects on marine zooplankton is key to proper management of marine resources and fisheries. This is particularly urgent for Japan where the coastal water temperature has been increasing faster than the global average over the past decade. Conventional sampling and monitoring programmes, by ignoring thein situvital status of the zooplankton, produce incomplete information about the state of the ecosystem. We showed that marine copepod carcasses were ubiquitous along a latitudinal gradient of 34–39°N of the Japanese coasts. On average, 4.4–18.1% of the individuals of the main copepod genera (Acartia, Paracalanus,Oithona, andPseudocalanus) were carcasses, equivalent to 19–250 µg C m−3. Higher fractions of dead copepods tended to occur at higher water temperatures, implicating temperature-dependent non-predation mortality. Carcass occurrence may represent a loss of copepod production for the traditional predation-based food chain. On average, 49.5% of the carcass carbon would be remineralized in the water column via bacteria respiration, with the remainder potentially exported to the seafloor. Continuous warming in the Japanese coasts is expected to accelerate non-predation copepod mortality, with unknown consequences for the local marine food web.
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DOI：
10.5928/kaiyou1942.20.24
发表时间：
1964
期刊：
Journal of the Oceanographical Society of Japan
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
Y. Nishibe;H. Isami;H. Fukuda;S. Nishida;T. Nagata;Aiko Tachibana;A. Tsuda
影响因子：
2.4
作者：
Bickel, Samantha L.;Tang, Kam W.
通讯作者：
Tang, Kam W.
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DOI：
10.2520/myco1975.1999.9
发表时间：
1999
期刊：
Mycotoxins
影响因子：
--
作者：
H. Narita;Sinya Nakamura;Tutomu Kubota;K. Sugiyama;Tomoko Kageyama;T. Noguchi
通讯作者：
T. Noguchi