Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka
Nutrient fluxes with river runoff can largely determine the state of coastal water ecosystems. The Vilyuchinskaya and Avachinskaya Bays of Kamchatka Peninsula were surveyed on 4–5 July 2022, just after the peak of the spring–summer flood of the Vilyucha and Avacha Rivers associated with the snow mel...
Published in: | Journal of Marine Science and Engineering |
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Multidisciplinary Digital Publishing Institute
2023
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Online Access: | https://doi.org/10.3390/jmse11071299 |
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ftmdpi:oai:mdpi.com:/2077-1312/11/7/1299/ 2023-08-20T04:07:39+02:00 Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka Pavel Semkin Galina Pavlova Vyacheslav Lobanov Yuri Barabanshchikov Sergey Kukla Sergey Sagalaev Maria Shvetsova Elena Shkirnikova Petr Tishchenko Evgenia Tibenko Olga Ulanova Pavel Tishchenko agris 2023-06-26 application/pdf https://doi.org/10.3390/jmse11071299 EN eng Multidisciplinary Digital Publishing Institute Chemical Oceanography https://dx.doi.org/10.3390/jmse11071299 https://creativecommons.org/licenses/by/4.0/ Journal of Marine Science and Engineering; Volume 11; Issue 7; Pages: 1299 Kamchatka Peninsula estuary CO 2 nutrient flux phytoplankton bloom organic matter snow cover volcanic ash Text 2023 ftmdpi https://doi.org/10.3390/jmse11071299 2023-08-01T10:37:29Z Nutrient fluxes with river runoff can largely determine the state of coastal water ecosystems. The Vilyuchinskaya and Avachinskaya Bays of Kamchatka Peninsula were surveyed on 4–5 July 2022, just after the peak of the spring–summer flood of the Vilyucha and Avacha Rivers associated with the snow melting in volcanic areas. Additionally, water sampling was performed in river water in December 2022, in the period of winter low water. A general undersaturation of CO2 of surface waters was observed in the Vilyuchinskaya and Avachinskaya Bays. Strong supersaturation of CO2 of the near-bottom waters was observed, due to microbial destruction of organic matter, especially in Avachinskaya Bay. This organic matter was formed as a result of photosynthesis in the water column, which subsequently gravitated to the bottom and concentrated in specific bottom depressions in the studied bays. In these depressions, black sediments were found, in which sulfate reduction occurred. The porewater of sediments had a very high concentration of organic carbon, dissolved and organic nitrogen, and phosphates, as well as CO2 partial pressure. The source of nutrients for the studied bays is tephra (volcanic suspended particles), which covers all the watersheds, including the soil and snow, as a result of volcanic activity in the study region. Based on the calculated nutrient fluxes in river runoff for the summer and winter seasons and the DIN/DIP ratios in river, sea, and pore waters, the causes of phytoplankton blooms, including the occurrence of red tides, are discussed. The maximum flux of nutrients and, accordingly, phytoplankton blooms should be expected in the years with the highest volcanic activity and high summer air temperatures, since the melting of nutrient-rich snow and ice will be maximum. This will determine the flux of nutrients in the river runoff of the Kamchatka Peninsula and contribute to phytoplankton blooms. Text Kamchatka Kamchatka Peninsula MDPI Open Access Publishing Kamchatka Peninsula ENVELOPE(160.000,160.000,56.000,56.000) Avacha ENVELOPE(158.503,158.503,53.040,53.040) Vilyucha ENVELOPE(158.407,158.407,52.658,52.658) Journal of Marine Science and Engineering 11 7 1299 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
Kamchatka Peninsula estuary CO 2 nutrient flux phytoplankton bloom organic matter snow cover volcanic ash |
spellingShingle |
Kamchatka Peninsula estuary CO 2 nutrient flux phytoplankton bloom organic matter snow cover volcanic ash Pavel Semkin Galina Pavlova Vyacheslav Lobanov Yuri Barabanshchikov Sergey Kukla Sergey Sagalaev Maria Shvetsova Elena Shkirnikova Petr Tishchenko Evgenia Tibenko Olga Ulanova Pavel Tishchenko Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka |
topic_facet |
Kamchatka Peninsula estuary CO 2 nutrient flux phytoplankton bloom organic matter snow cover volcanic ash |
description |
Nutrient fluxes with river runoff can largely determine the state of coastal water ecosystems. The Vilyuchinskaya and Avachinskaya Bays of Kamchatka Peninsula were surveyed on 4–5 July 2022, just after the peak of the spring–summer flood of the Vilyucha and Avacha Rivers associated with the snow melting in volcanic areas. Additionally, water sampling was performed in river water in December 2022, in the period of winter low water. A general undersaturation of CO2 of surface waters was observed in the Vilyuchinskaya and Avachinskaya Bays. Strong supersaturation of CO2 of the near-bottom waters was observed, due to microbial destruction of organic matter, especially in Avachinskaya Bay. This organic matter was formed as a result of photosynthesis in the water column, which subsequently gravitated to the bottom and concentrated in specific bottom depressions in the studied bays. In these depressions, black sediments were found, in which sulfate reduction occurred. The porewater of sediments had a very high concentration of organic carbon, dissolved and organic nitrogen, and phosphates, as well as CO2 partial pressure. The source of nutrients for the studied bays is tephra (volcanic suspended particles), which covers all the watersheds, including the soil and snow, as a result of volcanic activity in the study region. Based on the calculated nutrient fluxes in river runoff for the summer and winter seasons and the DIN/DIP ratios in river, sea, and pore waters, the causes of phytoplankton blooms, including the occurrence of red tides, are discussed. The maximum flux of nutrients and, accordingly, phytoplankton blooms should be expected in the years with the highest volcanic activity and high summer air temperatures, since the melting of nutrient-rich snow and ice will be maximum. This will determine the flux of nutrients in the river runoff of the Kamchatka Peninsula and contribute to phytoplankton blooms. |
format |
Text |
author |
Pavel Semkin Galina Pavlova Vyacheslav Lobanov Yuri Barabanshchikov Sergey Kukla Sergey Sagalaev Maria Shvetsova Elena Shkirnikova Petr Tishchenko Evgenia Tibenko Olga Ulanova Pavel Tishchenko |
author_facet |
Pavel Semkin Galina Pavlova Vyacheslav Lobanov Yuri Barabanshchikov Sergey Kukla Sergey Sagalaev Maria Shvetsova Elena Shkirnikova Petr Tishchenko Evgenia Tibenko Olga Ulanova Pavel Tishchenko |
author_sort |
Pavel Semkin |
title |
Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka |
title_short |
Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka |
title_full |
Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka |
title_fullStr |
Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka |
title_full_unstemmed |
Nutrient Flux under the Influence of Melt Water Runoff from Volcanic Territories and Ecosystem Response of Vilyuchinskaya and Avachinskaya Bays in Southeastern Kamchatka |
title_sort |
nutrient flux under the influence of melt water runoff from volcanic territories and ecosystem response of vilyuchinskaya and avachinskaya bays in southeastern kamchatka |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/jmse11071299 |
op_coverage |
agris |
long_lat |
ENVELOPE(160.000,160.000,56.000,56.000) ENVELOPE(158.503,158.503,53.040,53.040) ENVELOPE(158.407,158.407,52.658,52.658) |
geographic |
Kamchatka Peninsula Avacha Vilyucha |
geographic_facet |
Kamchatka Peninsula Avacha Vilyucha |
genre |
Kamchatka Kamchatka Peninsula |
genre_facet |
Kamchatka Kamchatka Peninsula |
op_source |
Journal of Marine Science and Engineering; Volume 11; Issue 7; Pages: 1299 |
op_relation |
Chemical Oceanography https://dx.doi.org/10.3390/jmse11071299 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/jmse11071299 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
11 |
container_issue |
7 |
container_start_page |
1299 |
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1774719456520437760 |