Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies
Bioassay is used to study bottom sediment ecotoxicity in the central and eastern parts of the Barents Sea. The effect of sediment elutriates on the growth of microalgae Phaedactylum tricornutum Bohlin and survival of brine shrimp Artemia salina L. larvae has been studied. As shown by scientific evidence, low and moderately toxic bottom sediments are present in the Eastern Basin, West Novaya Zemlya and South Novaya Zemlya troughs along with non-toxic bottom sediments, which may be indicative of accumulation of pollutants in these areas of the Barents Sea. Toxic bottom sediments have not been found in the sea areas adjacent to them. Reduced survival rate in sediment elutriates of low and moderate toxicity has been shown predominantly by A. salina larvae. Only one sediment elutriate from the South Novaya Zemlya trough has had a slight toxic effect on Ph. tricornutum. The amount of fine-grained fraction (> 0.063 mm) in bottom sediments classified as low and moderately toxic is 24.8–66.8 % and do not differ from its amount found in bottom sediments classified as non-toxic – 27.8–76.9 %. The findings obtained are consistent with published chemical analysis data according to which the Eastern Basin, West Novaya Zemlya and South Novaya Zemlya troughs are included in the Barents Sea areas having highest amounts of a number of pollutants in bottom sediments.
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Format: | Journal Contribution biblioteca |
Language: | Russian |
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2020
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Subjects: | Ecotoxicity, Pollutants, Artemia salina, Phaedactylum tricornutum, Загрязняющие вещества, Экотоксичность, ASFA_2015::B::Biological sciences, ASFA_2015::B::Bioassays, ASFA_2015::T::Toxicity, ASFA_2015::M::Marine sedimentation, |
Online Access: | http://hdl.handle.net/1834/41542 |
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dig-aquadocs-1834-415422021-10-26T01:55:02Z Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies Экотоксикологические исследования донных отложений центральных и восточных районов Баренцева моря Gorbacheva, E. A. Ecotoxicity Pollutants Artemia salina Phaedactylum tricornutum Загрязняющие вещества Экотоксичность ASFA_2015::B::Biological sciences ASFA_2015::B::Bioassays ASFA_2015::T::Toxicity ASFA_2015::M::Marine sedimentation Bioassay is used to study bottom sediment ecotoxicity in the central and eastern parts of the Barents Sea. The effect of sediment elutriates on the growth of microalgae Phaedactylum tricornutum Bohlin and survival of brine shrimp Artemia salina L. larvae has been studied. As shown by scientific evidence, low and moderately toxic bottom sediments are present in the Eastern Basin, West Novaya Zemlya and South Novaya Zemlya troughs along with non-toxic bottom sediments, which may be indicative of accumulation of pollutants in these areas of the Barents Sea. Toxic bottom sediments have not been found in the sea areas adjacent to them. Reduced survival rate in sediment elutriates of low and moderate toxicity has been shown predominantly by A. salina larvae. Only one sediment elutriate from the South Novaya Zemlya trough has had a slight toxic effect on Ph. tricornutum. The amount of fine-grained fraction (> 0.063 mm) in bottom sediments classified as low and moderately toxic is 24.8–66.8 % and do not differ from its amount found in bottom sediments classified as non-toxic – 27.8–76.9 %. The findings obtained are consistent with published chemical analysis data according to which the Eastern Basin, West Novaya Zemlya and South Novaya Zemlya troughs are included in the Barents Sea areas having highest amounts of a number of pollutants in bottom sediments. Методом биотестирования исследована экотоксичность донных отложений центральных и восточных районов Баренцева моря. В экспериментах изучалось воздействие водных вытяжек донных отложений на рост культуры морской одноклеточной водоросли Phaedactylum tricornutum Bohlin и выживаемость личинок эвригалинного жаброногого рачка Artemia salina L. По данным исследований в Центральном, Западно-Новоземельском и Южно-Новоземельском желобах наряду с нетоксичными присутствуют слабо- и среднетоксичные донные отложения, что может указывать на накопление загрязняющих веществ в этих районах Баренцева моря. В прилегающих к желобам районах моря токсичные донные отложения не обнаружены. В вытяжках, отнесенных к категориям слабо- и среднетоксичных, наблюдалось преимущественно снижение выживаемости личинок A. salina. Только одна вытяжка, полученная из донных отложений Южно-Новоземельского желоба, оказывала слабое токсическое воздействие на одноклеточную водоросль Ph. tricornutum. Содержание мелкодисперсной (> 0,063 мм) фракции в донных отложениях, характеризующихся как слабо- и среднетоксичные, составляло 24,8–66,8 % и не отличалось от содержания этой фракции в донных отложениях, классифицированных как нетоксичные – 27,8–76,9 %. Полученные данные согласуются с опубликованными результатами химического анализа, в соответствии с которыми Центральный, Западно-Новоземельский и Южно-Новоземельский желобы отмечены среди районов Баренцева моря с наиболее высоким содержанием целого ряда загрязняющих веществ в донных отложениях. Published Refereed 2021-10-25T06:51:08Z 2021-10-25T06:51:08Z 2020 Journal Contribution http://hdl.handle.net/1834/41542 ru http://vestnik.mstu.edu.ru/show-eng.shtml?art=2059 http://vestnik.mstu.edu.ru/show.shtml?art=2059 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ pp.122-130 Barents Sea Баренцево море Новая Земля Novaya Zemlya |
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Ecotoxicity Pollutants Artemia salina Phaedactylum tricornutum Загрязняющие вещества Экотоксичность ASFA_2015::B::Biological sciences ASFA_2015::B::Bioassays ASFA_2015::T::Toxicity ASFA_2015::M::Marine sedimentation Ecotoxicity Pollutants Artemia salina Phaedactylum tricornutum Загрязняющие вещества Экотоксичность ASFA_2015::B::Biological sciences ASFA_2015::B::Bioassays ASFA_2015::T::Toxicity ASFA_2015::M::Marine sedimentation |
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Ecotoxicity Pollutants Artemia salina Phaedactylum tricornutum Загрязняющие вещества Экотоксичность ASFA_2015::B::Biological sciences ASFA_2015::B::Bioassays ASFA_2015::T::Toxicity ASFA_2015::M::Marine sedimentation Ecotoxicity Pollutants Artemia salina Phaedactylum tricornutum Загрязняющие вещества Экотоксичность ASFA_2015::B::Biological sciences ASFA_2015::B::Bioassays ASFA_2015::T::Toxicity ASFA_2015::M::Marine sedimentation Gorbacheva, E. A. Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies |
description |
Bioassay is used to study bottom sediment ecotoxicity in the central and eastern parts of the Barents Sea. The effect of sediment elutriates on the growth of microalgae Phaedactylum tricornutum Bohlin and survival of brine shrimp Artemia salina L. larvae has been studied. As shown by scientific evidence, low and moderately toxic bottom sediments are present in the Eastern Basin, West Novaya Zemlya and South Novaya Zemlya troughs along with non-toxic bottom sediments, which may be indicative of accumulation of pollutants in these areas of the Barents Sea. Toxic bottom sediments have not been found in the sea areas adjacent to them. Reduced survival rate in sediment elutriates of low and moderate toxicity has been shown predominantly by A. salina larvae. Only one sediment elutriate from the South Novaya Zemlya trough has had a slight toxic effect on Ph. tricornutum. The amount of fine-grained fraction (> 0.063 mm) in bottom sediments classified as low and moderately toxic is 24.8–66.8 % and do not differ from its amount found in bottom sediments classified as non-toxic – 27.8–76.9 %. The findings obtained are consistent with published chemical analysis data according to which the Eastern Basin, West Novaya Zemlya and South Novaya Zemlya troughs are included in the Barents Sea areas having highest amounts of a number of pollutants in bottom sediments. |
format |
Journal Contribution |
topic_facet |
Ecotoxicity Pollutants Artemia salina Phaedactylum tricornutum Загрязняющие вещества Экотоксичность ASFA_2015::B::Biological sciences ASFA_2015::B::Bioassays ASFA_2015::T::Toxicity ASFA_2015::M::Marine sedimentation |
author |
Gorbacheva, E. A. |
author_facet |
Gorbacheva, E. A. |
author_sort |
Gorbacheva, E. A. |
title |
Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies |
title_short |
Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies |
title_full |
Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies |
title_fullStr |
Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies |
title_full_unstemmed |
Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies |
title_sort |
bottom sediments of the central and eastern parts of the barents sea: ecotoxicological studies |
publishDate |
2020 |
url |
http://hdl.handle.net/1834/41542 |
work_keys_str_mv |
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