Integrity of benthic assemblages along the arctic estuarine-coastal system

This study was carried out in the Yenisei estuary and in the adjacent part of the Kara Sea shelf. We analyzed and compared the distribution patterns of the different benthic taxa and size classes (micro-, meio-, macro- and megabenthos) along a pronounced gradient of environmental factors. Four ecolo...

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Autores principales:	Alexey Udalov, Margarita Chikina, Andrey Azovsky, Alexander Basin, Sergey Galkin, Lesya Garlitska, Tatyana Khusid, Daria Kondar, Sergei Korsun, Viacheslav Kremenetskiy, Petr Makkaveev, Daria Portnova, Philipp Sapojnikov, Miloslav Simakov, Andrey Vedenin, Vadim Mokievsky
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Benthic assemblages Micro-, meio- and macrobenthos Spatial distribution Zonation patterns Yenisei estuary Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/eff9f5f1b1fb42ca8bf4ada4b9f2b217
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spelling	oai:doaj.org-article:eff9f5f1b1fb42ca8bf4ada4b9f2b2172021-12-01T04:35:33ZIntegrity of benthic assemblages along the arctic estuarine-coastal system1470-160X10.1016/j.ecolind.2020.107115https://doaj.org/article/eff9f5f1b1fb42ca8bf4ada4b9f2b2172021-02-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X20310542https://doaj.org/toc/1470-160XThis study was carried out in the Yenisei estuary and in the adjacent part of the Kara Sea shelf. We analyzed and compared the distribution patterns of the different benthic taxa and size classes (micro-, meio-, macro- and megabenthos) along a pronounced gradient of environmental factors. Four ecological zones were distinguished based on certain environmental parameters, from the upper riverine area to the mouth of the estuary and the Kara Sea slope, which had normal marine conditions. The distribution of the metazoan assemblages generally corresponded to the divisions of these zones and represented a series of species assemblages with coincident boundaries that changed successively along the estuarine gradient. For all three size classes of metazoan benthos, we detected three main species assemblages: brackish-water, transitional and marine. Each taxon showed, however, its own particular spatial pattern and, therefore, has a set of environmental variables that is responsible for its fine-scale distribution. The distribution of unicellular organisms showed a worse match with the division of the estuary into environmental zones. Foraminifers established a single association in most of the estuary but were absent in the upper desalinated part. Diatom algae were patchily distributed, with a number of local communities and many rare species.We conclude that the estuarine habitat appears to drive the distribution of the various benthic taxa in taxa-specific ways. The distribution of size classes (i.e., mega-, macro-, or meiofauna) that combine several high-level taxa demonstrates a better match with the multivariate environmental zonation than the distribution of the separate taxa. The role of different benthic taxa and size classes in biomonitoring studies is discussed.Alexey UdalovMargarita ChikinaAndrey AzovskyAlexander BasinSergey GalkinLesya GarlitskaTatyana KhusidDaria KondarSergei KorsunViacheslav KremenetskiyPetr MakkaveevDaria PortnovaPhilipp SapojnikovMiloslav SimakovAndrey VedeninVadim MokievskyElsevierarticleBenthic assemblagesMicro-, meio- and macrobenthosSpatial distributionZonation patternsYenisei estuaryEcologyQH540-549.5ENEcological Indicators, Vol 121, Iss , Pp 107115- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Benthic assemblages Micro-, meio- and macrobenthos Spatial distribution Zonation patterns Yenisei estuary Ecology QH540-549.5
spellingShingle	Benthic assemblages Micro-, meio- and macrobenthos Spatial distribution Zonation patterns Yenisei estuary Ecology QH540-549.5 Alexey Udalov Margarita Chikina Andrey Azovsky Alexander Basin Sergey Galkin Lesya Garlitska Tatyana Khusid Daria Kondar Sergei Korsun Viacheslav Kremenetskiy Petr Makkaveev Daria Portnova Philipp Sapojnikov Miloslav Simakov Andrey Vedenin Vadim Mokievsky Integrity of benthic assemblages along the arctic estuarine-coastal system
description	This study was carried out in the Yenisei estuary and in the adjacent part of the Kara Sea shelf. We analyzed and compared the distribution patterns of the different benthic taxa and size classes (micro-, meio-, macro- and megabenthos) along a pronounced gradient of environmental factors. Four ecological zones were distinguished based on certain environmental parameters, from the upper riverine area to the mouth of the estuary and the Kara Sea slope, which had normal marine conditions. The distribution of the metazoan assemblages generally corresponded to the divisions of these zones and represented a series of species assemblages with coincident boundaries that changed successively along the estuarine gradient. For all three size classes of metazoan benthos, we detected three main species assemblages: brackish-water, transitional and marine. Each taxon showed, however, its own particular spatial pattern and, therefore, has a set of environmental variables that is responsible for its fine-scale distribution. The distribution of unicellular organisms showed a worse match with the division of the estuary into environmental zones. Foraminifers established a single association in most of the estuary but were absent in the upper desalinated part. Diatom algae were patchily distributed, with a number of local communities and many rare species.We conclude that the estuarine habitat appears to drive the distribution of the various benthic taxa in taxa-specific ways. The distribution of size classes (i.e., mega-, macro-, or meiofauna) that combine several high-level taxa demonstrates a better match with the multivariate environmental zonation than the distribution of the separate taxa. The role of different benthic taxa and size classes in biomonitoring studies is discussed.
format	article
author	Alexey Udalov Margarita Chikina Andrey Azovsky Alexander Basin Sergey Galkin Lesya Garlitska Tatyana Khusid Daria Kondar Sergei Korsun Viacheslav Kremenetskiy Petr Makkaveev Daria Portnova Philipp Sapojnikov Miloslav Simakov Andrey Vedenin Vadim Mokievsky
author_facet	Alexey Udalov Margarita Chikina Andrey Azovsky Alexander Basin Sergey Galkin Lesya Garlitska Tatyana Khusid Daria Kondar Sergei Korsun Viacheslav Kremenetskiy Petr Makkaveev Daria Portnova Philipp Sapojnikov Miloslav Simakov Andrey Vedenin Vadim Mokievsky
author_sort	Alexey Udalov
title	Integrity of benthic assemblages along the arctic estuarine-coastal system
title_short	Integrity of benthic assemblages along the arctic estuarine-coastal system
title_full	Integrity of benthic assemblages along the arctic estuarine-coastal system
title_fullStr	Integrity of benthic assemblages along the arctic estuarine-coastal system
title_full_unstemmed	Integrity of benthic assemblages along the arctic estuarine-coastal system
title_sort	integrity of benthic assemblages along the arctic estuarine-coastal system
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/eff9f5f1b1fb42ca8bf4ada4b9f2b217
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Integrity of benthic assemblages along the arctic estuarine-coastal system

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