Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia)
This paper presents the results of the hydrochemical, hydrobiological, and paleolimnological studies of 17 Arctic lakes in the Pechora River delta. Water samples and surface sediments were collected during the 2020 summer expedition to the Nenets State Nature Reserve. Based on the chemical compositi...
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| Format: | Article |
| Language: | English |
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Kazan Federal University
2021-09-01
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| Series: | Учёные записки Казанского университета: Серия Естественные науки |
| Subjects: | |
| Online Access: | https://kpfu.ru/uz-eng-ns-2021-3-15.html |
| _version_ | 1826908918925754368 |
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| author | N.M. Nigmatullin G.R. Nigamatzyanova E.A. Valieva L.A. Frolova |
| author_facet | N.M. Nigmatullin G.R. Nigamatzyanova E.A. Valieva L.A. Frolova |
| author_sort | N.M. Nigmatullin |
| collection | DOAJ |
| description | This paper presents the results of the hydrochemical, hydrobiological, and paleolimnological studies of 17 Arctic lakes in the Pechora River delta. Water samples and surface sediments were collected during the 2020 summer expedition to the Nenets State Nature Reserve. Based on the chemical composition of their waters, the studied lakes belong to the chloride class, sodium group II. Overall, they are characterized by shallow depths typical of this region, low mineralization (below 200 mg/L) and water hardness, as well as high dissolved oxygen levels. To assess the ecological status of the lakes, cladocerans and their subfossil remains, which have been widely recognized as reliable indicators for tracking long‐term changes in the development of freshwater ecosystems, were analyzed. A total of 23 cladoceran taxa were identified. The dominant species were Bosmina longispina (Leydig, 1860) and Chydorus cf. sphaericus (Müller, 1776) – either of these species, often displacing each other, prevailed in the lakes. Other cladoceran species were low-abundant and found sporadically: Sida crystallina (Müller, 1776), Pleuroxus uncinatus (Baird, 1850), Coronatella rectangula (Sars, 1862), and Bythotrephes longimanus (Leydig, 1860). The study also reports the first finding of Rhynchotalona latens (Sarmaja-Korjonen, Hakojarvi and Korhola, 2000), a rare glacial relict species with a narrow distribution range, in this region of Russia. The zoogeographical analysis of the data obtained on the identified taxa showed that species typical of the Palearctic and Holarctic zones prevail in the cladoceran communities under study. |
| first_indexed | 2024-03-13T09:49:46Z |
| format | Article |
| id | doaj.art-a7ad8175deee4e85a4112afdda3b36f5 |
| institution | Directory Open Access Journal |
| issn | 2542-064X 2500-218X |
| language | English |
| last_indexed | 2025-02-17T09:32:40Z |
| publishDate | 2021-09-01 |
| publisher | Kazan Federal University |
| record_format | Article |
| series | Учёные записки Казанского университета: Серия Естественные науки |
| spelling | doaj.art-a7ad8175deee4e85a4112afdda3b36f52025-01-02T10:35:26ZengKazan Federal UniversityУчёные записки Казанского университета: Серия Естественные науки2542-064X2500-218X2021-09-01163352753710.26907/2542-064X.2021.3.527-537Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia)N.M. Nigmatullin0G.R. Nigamatzyanova1E.A. Valieva2L.A. Frolova3Kazan Federal University, Kazan, 420008 RussiaKazan Federal University, Kazan, 420008 RussiaKazan Federal University, Kazan, 420008 RussiaKazan Federal University, Kazan, 420008 RussiaThis paper presents the results of the hydrochemical, hydrobiological, and paleolimnological studies of 17 Arctic lakes in the Pechora River delta. Water samples and surface sediments were collected during the 2020 summer expedition to the Nenets State Nature Reserve. Based on the chemical composition of their waters, the studied lakes belong to the chloride class, sodium group II. Overall, they are characterized by shallow depths typical of this region, low mineralization (below 200 mg/L) and water hardness, as well as high dissolved oxygen levels. To assess the ecological status of the lakes, cladocerans and their subfossil remains, which have been widely recognized as reliable indicators for tracking long‐term changes in the development of freshwater ecosystems, were analyzed. A total of 23 cladoceran taxa were identified. The dominant species were Bosmina longispina (Leydig, 1860) and Chydorus cf. sphaericus (Müller, 1776) – either of these species, often displacing each other, prevailed in the lakes. Other cladoceran species were low-abundant and found sporadically: Sida crystallina (Müller, 1776), Pleuroxus uncinatus (Baird, 1850), Coronatella rectangula (Sars, 1862), and Bythotrephes longimanus (Leydig, 1860). The study also reports the first finding of Rhynchotalona latens (Sarmaja-Korjonen, Hakojarvi and Korhola, 2000), a rare glacial relict species with a narrow distribution range, in this region of Russia. The zoogeographical analysis of the data obtained on the identified taxa showed that species typical of the Palearctic and Holarctic zones prevail in the cladoceran communities under study.https://kpfu.ru/uz-eng-ns-2021-3-15.htmlpaleolimnological analysisarctic lakespechora river deltacladocera |
| spellingShingle | N.M. Nigmatullin G.R. Nigamatzyanova E.A. Valieva L.A. Frolova Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia) Учёные записки Казанского университета: Серия Естественные науки paleolimnological analysis arctic lakes pechora river delta cladocera |
| title | Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia) |
| title_full | Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia) |
| title_fullStr | Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia) |
| title_full_unstemmed | Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia) |
| title_short | Recent Сladocera (Branchiopoda, Crustacea) in the taphocenoses of lakes in the Pechora River delta (Russia) |
| title_sort | recent сladocera branchiopoda crustacea in the taphocenoses of lakes in the pechora river delta russia |
| topic | paleolimnological analysis arctic lakes pechora river delta cladocera |
| url | https://kpfu.ru/uz-eng-ns-2021-3-15.html |
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