Abstract

The article considers the species composition as well as characteristics of the spatial and trophic structure of the macrobenthos in Nikolskaya Bay (Guba) of the White Sea. The bay belongs to the heavily silted-up lagoon ecosystems with a dominance of the trophic group of detritophages that are the surface deposit feeders (“collecting” detritophages). The accumulation of a large amount of the organic matter in the sediments of the lagoon and its freshening in the spring period contribute to the development of the predominantly small species of the detritophages more resistant to siltation and water freshening as well as to oxygen deficiency. These processes are especially evident in the apex region of the bay. Twenty-six species of invertebrates and nine species of seagrasses and algae were detected in the lagoon. Analysis of the obtained data on the species composition, diversity, and structure of the macrobenthos communities suggests the predominantly estuarine nature of the fauna of the Nikol’skaya Bay lagoon ecosystem compared to other lagoons of the White Sea since it is well protected from sea waves and currents by islands, luodos (rocky islets or shoals), and korgas (screes, continuing into a water body).

中文翻译：

---

尼科尔斯卡亚湾（白海坎达拉克沙湾）泻湖生态系统大型底栖动物的特异性、空间和营养结构特征

摘要

本文考虑了尼科尔斯卡亚湾（古巴）大型底栖动物的物种组成以及空间和营养结构特征。）的白海。该海湾属于严重淤积的泻湖生态系统，以碎屑噬菌体营养群为主导，这些碎屑噬菌体是表面沉积物的饲养者（“收集”碎屑噬菌体）。泻湖沉积物中大量有机物的积累及其在春季的清新有助于以小型碎屑菌为主的物种的发育，这些碎屑菌更能抵抗淤积、水质清新以及缺氧。这些过程在海湾的顶端区域尤其明显。在泻湖中发现了 26 种无脊椎动物和 9 种海草和藻类。分析所获得的物种组成、多样性、