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首页> 外文期刊>Marine biology >Annual population development and production by small copepods in Disko Bay, western Greenland
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Annual population development and production by small copepods in Disko Bay, western Greenland

机译：小co足类在格陵兰岛西部迪斯科湾的年度人口发展和生产

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The population of small copepod species (approximately <1 mm) were investigated during an annual cycle in Disko Bay, western Greenland. The small species considered were Acartia longiremis, Pseudocalanus spp., Oithona spp., Oncaea spp., Microsetella spp., and Micro-calanus spp. Most of the small species were present in the surface waters year round and numerically dominated the community, and in biomass from late summer and throughout winter. Oithona spp. was numerically the main contributor, while Pseudocalanus spp. dominated in terms of biomass. In the uppermost 50 m, maximum abundance, biomass and secondary production were observed in late September after the phytoplankton production practically had terminated and the winter initiated. The free spawning Acartia longiremis showed a strong seasonal fluctuation in biomass and egg production, in contrast to the egg carrying species Pseudocalanus spp. and Oithona spp. These had a long spawning season and maintained a more stable biomass year round. Secondary production was estimated by three different ways: (1) based on the obtained specific egg production rates, (2) a temperature dependent equation, and (3) a multilinear regression taking temperature, body weight and chlorophyll into consideration. The contribution of the small species was insignificant when compared to the large Calanus species during the spring- and post-bloom. However, during late summer and winter, where Calanus had left the upper water strata for hibernation, the small species played a crucial role in the pelagic carbon cycling.
机译：在格陵兰岛西部迪斯科湾的年度循环中，对小型co足类物种（约<1 mm）的种群进行了调查。所考虑的小种是A螨属，假单胞菌属，Oithona菌种，Oncaea菌种，Microsetella菌种和Micro-calanus菌种。大部分小物种常年存在于地表水域，在数量上占主导地位，从夏末到整个冬季都存在于生物质中。 Oithona spp。在数值上是主要贡献者，而假单胞菌属。在生物量方面占主导地位。在最上面的50 m，9月下旬观察到最大的丰度，生物量和二次生产，这是因为浮游植物的生产实际上已经终止并且冬天开始了。与产卵种Pseudocalanus spp相比，自由产卵的长car螨显示出生物量和产蛋量的强烈季节性波动。和Oithona spp。这些产卵季节长，全年生物量保持稳定。通过三种不同的方式估算次生产量：（1）基于获得的特定卵的产卵率；（2）温度相关方程；（3）考虑温度，体重和叶绿素的多元线性回归。在春季和春季之后，与大型卡努斯物种相比，小物种的贡献微不足道。然而，在夏末和冬季，卡纳努斯离开了上层水层进行冬眠，这些小物种在中上层碳循环中起着至关重要的作用。

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