Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure)
The species composition and abundance of macrozoobenthos was studied in rapids and backwaters of the Kem’ River (draining to the White Sea). 93 species and supra-species taxa of invertebrates were identified. Zoobenthos of the rapids was more diverse, the bulk of it made up of amphibiotic insects at...
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| Format: | Article |
| Language: | English |
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Karelian Research Centre of the Russian Academy of Sciences
2018-10-01
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| Series: | Transactions of the Karelian Research Centre of the Russian Academy of Sciences |
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| Online Access: | http://journals.krc.karelia.ru/index.php/ecology/article/view/908 |
| _version_ | 1818415253087584256 |
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| author | Igor Baryshev |
| author_facet | Igor Baryshev |
| author_sort | Igor Baryshev |
| collection | DOAJ |
| description | The species composition and abundance of macrozoobenthos was studied in rapids and backwaters of the Kem’ River (draining to the White Sea). 93 species and supra-species taxa of invertebrates were identified. Zoobenthos of the rapids was more diverse, the bulk of it made up of amphibiotic insects at the larval stage – mayflies<br />of the family Baetidae (Ephemeroptera), caddisflies of the families Hydropsychidae and Rhyacophilidae, stoneflies (Plecoptera), dipterans of the subfamily Orthocladiinae. The backwaters are poorer in species diversity, the species of chironomids of the subfamily Chironominii predominate. The zoobenthos biomass in the rapids (1112–2150<br />ind./m2 and 1.7–6.9 g/m2) is mainly composed of Trichoptera, Plecoptera and Bivalvia. The backwaters are poor in zoobenthos (390–1210 ind./m2 and 0.8–2.8 g/m2). The biomass is formed by Bivalvia and Gastropoda, Oligochaeta and Chironomidae. Local, highbiomass<br />(up to 460 g/m2) aggregations of large bivalves Anodonta cygnea have been found. In the trophic structure, the most indicative is the share of passive filter feeders, which is high in the rapids in the lower reaches of the river and downstream of flowage lakes. According to the composition of saprobity indicator organisms, watercourses of the Kem’ River catchment belong to the β-mesosaprobic zone. |
| first_indexed | 2024-12-14T11:32:03Z |
| format | Article |
| id | doaj.art-b20036ba85024455a9b219e5a6d906f9 |
| institution | Directory Open Access Journal |
| issn | 1997-3217 2312-4504 |
| language | English |
| last_indexed | 2024-12-14T11:32:03Z |
| publishDate | 2018-10-01 |
| publisher | Karelian Research Centre of the Russian Academy of Sciences |
| record_format | Article |
| series | Transactions of the Karelian Research Centre of the Russian Academy of Sciences |
| spelling | doaj.art-b20036ba85024455a9b219e5a6d906f92022-12-21T23:03:16ZengKarelian Research Centre of the Russian Academy of SciencesTransactions of the Karelian Research Centre of the Russian Academy of Sciences1997-32172312-45042018-10-011010.17076/eco908634Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure)Igor Baryshev0Institute of Biology, Karelian Research Centre, Russian Academy of SciencesThe species composition and abundance of macrozoobenthos was studied in rapids and backwaters of the Kem’ River (draining to the White Sea). 93 species and supra-species taxa of invertebrates were identified. Zoobenthos of the rapids was more diverse, the bulk of it made up of amphibiotic insects at the larval stage – mayflies<br />of the family Baetidae (Ephemeroptera), caddisflies of the families Hydropsychidae and Rhyacophilidae, stoneflies (Plecoptera), dipterans of the subfamily Orthocladiinae. The backwaters are poorer in species diversity, the species of chironomids of the subfamily Chironominii predominate. The zoobenthos biomass in the rapids (1112–2150<br />ind./m2 and 1.7–6.9 g/m2) is mainly composed of Trichoptera, Plecoptera and Bivalvia. The backwaters are poor in zoobenthos (390–1210 ind./m2 and 0.8–2.8 g/m2). The biomass is formed by Bivalvia and Gastropoda, Oligochaeta and Chironomidae. Local, highbiomass<br />(up to 460 g/m2) aggregations of large bivalves Anodonta cygnea have been found. In the trophic structure, the most indicative is the share of passive filter feeders, which is high in the rapids in the lower reaches of the river and downstream of flowage lakes. According to the composition of saprobity indicator organisms, watercourses of the Kem’ River catchment belong to the β-mesosaprobic zone.http://journals.krc.karelia.ru/index.php/ecology/article/view/908benthic invertebratesrapidsbackwaterriverdiversitybiomassfaunafilter feederssaprobity |
| spellingShingle | Igor Baryshev Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure) Transactions of the Karelian Research Centre of the Russian Academy of Sciences benthic invertebrates rapids backwater river diversity biomass fauna filter feeders saprobity |
| title | Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure) |
| title_full | Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure) |
| title_fullStr | Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure) |
| title_full_unstemmed | Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure) |
| title_short | Zoobenthos of the Kem’ river, White sea drainage basin (composition, abundance and trophic structure) |
| title_sort | zoobenthos of the kem river white sea drainage basin composition abundance and trophic structure |
| topic | benthic invertebrates rapids backwater river diversity biomass fauna filter feeders saprobity |
| url | http://journals.krc.karelia.ru/index.php/ecology/article/view/908 |
| work_keys_str_mv | AT igorbaryshev zoobenthosofthekemriverwhiteseadrainagebasincompositionabundanceandtrophicstructure |