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Impact of climatic change on the biological production in the Barents Sea

机译：气候变化对巴伦支海生物生产的影响

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摘要

The Barents Sea is a high latitude ecosystem and is an important nursery and feeding area for commercial fish stocks such as cod, capelin and herring. There is a large inter-annual variability both in physical and biological conditions in the Barents Sea. Understanding and predicting changes in the system requires insight into the coupled nature of the physical and biological interactions. A coupled physical and biological ocean model is used to study the impact of postulated future atmospheric changes on the physical and biological conditions in the Barents Sea. Results from this simulation not only show that there is a large variability in the physical conditions on a wide range of time scales, but also that the temperature in the Barents Sea is increasing. The corresponding ice cover decrease is most noticeable in the summer months. The changes in physical properties will most likely have an impact on the biotope. On average, the primary production increases slightly over a 65 year long period, about 8%, partly due to an increased production in the northern Barents Sea. The model further simulates that the production of Atlantic zooplankton species increases approximately 20% and becomes more abundant in the east. The Arctic zooplankton biomass decreases significantly (50%) causing the total simulated production to decrease.
机译：巴伦支海是一个高纬度的生态系统，是鳕鱼，毛鳞鱼和鲱鱼等商业鱼类种群的重要苗圃和取食区。巴伦支海的自然和生物学条件都存在较大的年际变化。了解和预测系统中的变化需要洞悉物理和生物相互作用的耦合性质。耦合的物理和生物海洋模型用于研究假定的未来大气变化对巴伦支海的物理和生物状况的影响。该模拟的结果不仅表明物理条件在很宽的时间范围内存在很大的变化，而且巴伦支海的温度正在升高。在夏季，相应的冰盖减少最为明显。物理性质的变化很可能会对生物群落产生影响。平均而言，在65年的长期里，初级产量略有增加，约为8％，部分原因是北部巴伦支海的产量增加。该模型进一步模拟了大西洋浮游动物物种的产量增加了约20％，并在东部变得更加丰富。北极浮游动物的生物量显着减少（50％），导致模拟总产量减少。

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