Polychaete taxocenes in the Pevek Strait (Chaun Bay) and the Long Strait, Chukci Sea

In spite of similar abiotic conditions in the Long Strait and Chaun Bay, the polychaete taxocenes differ markedly. In some cases biomass, production, and assimilation of polychaetes in the Long Strait are lower, while rate of metabolism is higher than in the Chaun Bay. This may be related to appearance of an intermediate layer in the Long Strait during some years. The latter is characterized by positive temperatures in winter and by low content of oxygen; these conditions are unfavorable for Arctic polychaetes.

尽管朗海峡（Long Strait）与恰翁湾（Chaun Bay）的非生物环境条件相似，但两地的多毛类分类群落（polychaete taxocenes）存在显著差异。部分观测场景中，朗海峡内多毛类的生物量、生产量及同化作用均低于恰翁湾，而其代谢速率则高于后者。该差异可能与部分年份朗海峡出现的中间水层有关，该水层的特征为冬季水温呈正温且溶解氧含量偏低，此类环境条件对北极多毛类并不适宜。