干旱区生态环境知识资源中心(Arid): Taxonomic Composition and Salinity Tolerance of Macrozoobenthos in Small Rivers of the Southern Arid Zone of the East European Plain

Arid

DOI	10.3390/biology12091271
	Taxonomic Composition and Salinity Tolerance of Macrozoobenthos in Small Rivers of the Southern Arid Zone of the East European Plain
	Golovatyuk, Larisa V.; Nazarova, Larisa B.; Kalioujnaia, Irina J.; Grekov, Ivan M.
通讯作者	Golovatyuk, LV
来源期刊	BIOLOGY-BASEL
EISSN	2079-7737
出版年	2023
卷号	12 期号:9
英文摘要	Simple Summary Climate-related salinization of inland waters is observed in many regions of the world as a major environmental problem affecting natural processes in aquatic ecosystems. In order to better predict and control these changes, it is important to study the responses of aquatic fauna to increasing salinity. Macrozoobenthic fauna, which includes mollusks, small crustaceans, and insect larvae, constitutes the main food base for fish and water birds. Due to their relatively short life cycles, large species diversity, and high abundance, macrozoobenthos are the best indicators of changing water salinity. To determine the species richness, distribution, and salinity tolerance of macrozoobenthos, we investigated 17 small rivers with different water salinity in the southern arid region of the East European Plain. The study shows that the species richness gradually decreases with an increase in water salinity in the rivers. In freshwater rivers, the macrozoobenthos fauna includes more than 100 species, whereas, in hypersaline rivers with salinity comparable to seawater, only 10 species were found. A total of 5 of the 156 invertebrate species can be used as indicators of water salinization in rivers of the arid regions of Europe.Abstract This study investigated the species composition, distribution, and salinity tolerance of macrozoobenthos in 17 small rivers in the southern arid region of the East European Plain, which are characterized by a small channel gradient, slow-flowing or stagnant water bodies, and a wide range of water salinity, varying between 0.18 and 30 g L-1. In total, 156 taxa were found, among which 66 were Diptera species. The study revealed that the formation of benthic communities in the rivers is influenced by natural factors of the catchment basins, including the flat landscape with sparsely developed relief differentiation, climate aridity, and the widespread occurrence of saline soils and groundwater, largely related to the sedimentation of the ancient Caspian Sea and modern climate changes. These conditions are favorable for the occurrence of lacustrine macrozoobenthic species in freshwater, euryhaline, and halophilic ecological groups. The investigation revealed a decrease in species richness in response to an increase in water salinity. The five identified halophilic species Tanytarsus kharaensis, Glyptotendipes salinus, Cricotopus salinophilus, Chironomus salinarius, and Palpomyia schmidti can be used as indicators of river ecosystem salinization.
英文关键词	benthic communities species composition species distribution salinity resistance salinity gradient small rivers arid region East European Plain the Volga River the Lake Elton
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:001071295200001
WOS关键词	BASIN VOLGOGRAD REGION ; LOWER VOLGA ; WULP DIPTERA ; WATER ; SALT ; LAKES ; CHIRONOMIDAE ; BIODIVERSITY ; COMMUNITIES ; SEDIMENTS
WOS类目	Biology
WOS研究方向	Life Sciences & Biomedicine - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395567
推荐引用方式 GB/T 7714	Golovatyuk, Larisa V.,Nazarova, Larisa B.,Kalioujnaia, Irina J.,et al. Taxonomic Composition and Salinity Tolerance of Macrozoobenthos in Small Rivers of the Southern Arid Zone of the East European Plain[J],2023,12(9).
APA	Golovatyuk, Larisa V.,Nazarova, Larisa B.,Kalioujnaia, Irina J.,&Grekov, Ivan M..(2023).Taxonomic Composition and Salinity Tolerance of Macrozoobenthos in Small Rivers of the Southern Arid Zone of the East European Plain.BIOLOGY-BASEL,12(9).
MLA	Golovatyuk, Larisa V.,et al."Taxonomic Composition and Salinity Tolerance of Macrozoobenthos in Small Rivers of the Southern Arid Zone of the East European Plain".BIOLOGY-BASEL 12.9(2023).