Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019
Data on quantitative distribution of early and late spawners of sockeye salmon in the Lake Nachikinskoye basin were collected in 2019 using quadcopter. Features of sockeye spawning in certain sectors of the lake coast and at the spawning stations are analyzed. The spawning starts earlier on the east...
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2020
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Online Access: | https://doi.org/10.26428/1606-9919-2020-200-618-634 https://doaj.org/article/a63498f36a5c43c2944b67261539b396 |
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ftdoajarticles:oai:doaj.org/article:a63498f36a5c43c2944b67261539b396 2023-10-09T21:53:05+02:00 Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 G. V. Zaporozhets O. M. Zaporozhets M. G. Feldman 2020-09-01T00:00:00Z https://doi.org/10.26428/1606-9919-2020-200-618-634 https://doaj.org/article/a63498f36a5c43c2944b67261539b396 RU rus Transactions of the Pacific Research Institute of Fisheries and Oceanography https://izvestiya.tinro-center.ru/jour/article/view/578 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2020-200-618-634 https://doaj.org/article/a63498f36a5c43c2944b67261539b396 Известия ТИНРО, Vol 200, Iss 3, Pp 618-634 (2020) нерка нерест разнообразие квадрокоптер фотосъёмка учёт численности математическое моделирование Aquaculture. Fisheries. Angling SH1-691 article 2020 ftdoajarticles https://doi.org/10.26428/1606-9919-2020-200-618-634 2023-09-10T00:45:29Z Data on quantitative distribution of early and late spawners of sockeye salmon in the Lake Nachikinskoye basin were collected in 2019 using quadcopter. Features of sockeye spawning in certain sectors of the lake coast and at the spawning stations are analyzed. The spawning starts earlier on the eastern coast, and then on the western coast. The late sockeye spawning is considered in details at the spawning stations on littoral shelves, on steep coastal slopes, in key limnocrenes, in algae fields at the depths up to 5 m, and in the river tributaries. Environmental conditions of the stations are compared quantitatively by several parameters, as water flows and their gradients, water temperature, dissolved oxygen content, soils composition, impact of predators and waves. Each station has its advantages and disadvantages. The lake shallows dominate among the spawning grounds, but their diversity provides stability and even growth of local sockeye salmon stocks. Spatial distribution of the sockeye spawning grounds is described. The number of spawned fish is assessed using the trapezoid approximation (TAUC) as 55 . 103 ind. for early sockeye and 132 . 103 ind. for late sockeye that shows a considerable growth of the stocks of sockeye salmon in Lake Nachikinskoye since the middle of last century. Article in Journal/Newspaper Kamchatka Directory of Open Access Journals: DOAJ Articles Sockeye ENVELOPE(-130.143,-130.143,54.160,54.160) Izvestiya TINRO 200 3 618 634 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
нерка нерест разнообразие квадрокоптер фотосъёмка учёт численности математическое моделирование Aquaculture. Fisheries. Angling SH1-691 |
spellingShingle |
нерка нерест разнообразие квадрокоптер фотосъёмка учёт численности математическое моделирование Aquaculture. Fisheries. Angling SH1-691 G. V. Zaporozhets O. M. Zaporozhets M. G. Feldman Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 |
topic_facet |
нерка нерест разнообразие квадрокоптер фотосъёмка учёт численности математическое моделирование Aquaculture. Fisheries. Angling SH1-691 |
description |
Data on quantitative distribution of early and late spawners of sockeye salmon in the Lake Nachikinskoye basin were collected in 2019 using quadcopter. Features of sockeye spawning in certain sectors of the lake coast and at the spawning stations are analyzed. The spawning starts earlier on the eastern coast, and then on the western coast. The late sockeye spawning is considered in details at the spawning stations on littoral shelves, on steep coastal slopes, in key limnocrenes, in algae fields at the depths up to 5 m, and in the river tributaries. Environmental conditions of the stations are compared quantitatively by several parameters, as water flows and their gradients, water temperature, dissolved oxygen content, soils composition, impact of predators and waves. Each station has its advantages and disadvantages. The lake shallows dominate among the spawning grounds, but their diversity provides stability and even growth of local sockeye salmon stocks. Spatial distribution of the sockeye spawning grounds is described. The number of spawned fish is assessed using the trapezoid approximation (TAUC) as 55 . 103 ind. for early sockeye and 132 . 103 ind. for late sockeye that shows a considerable growth of the stocks of sockeye salmon in Lake Nachikinskoye since the middle of last century. |
format |
Article in Journal/Newspaper |
author |
G. V. Zaporozhets O. M. Zaporozhets M. G. Feldman |
author_facet |
G. V. Zaporozhets O. M. Zaporozhets M. G. Feldman |
author_sort |
G. V. Zaporozhets |
title |
Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 |
title_short |
Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 |
title_full |
Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 |
title_fullStr |
Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 |
title_full_unstemmed |
Feldman M.G. Estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of Lake Nachikinskoye (Kamchatka) in 2019 |
title_sort |
feldman m.g. estimation of the number of sockeye salmon adults and their distribution by spawning stations in the basin of lake nachikinskoye (kamchatka) in 2019 |
publisher |
Transactions of the Pacific Research Institute of Fisheries and Oceanography |
publishDate |
2020 |
url |
https://doi.org/10.26428/1606-9919-2020-200-618-634 https://doaj.org/article/a63498f36a5c43c2944b67261539b396 |
long_lat |
ENVELOPE(-130.143,-130.143,54.160,54.160) |
geographic |
Sockeye |
geographic_facet |
Sockeye |
genre |
Kamchatka |
genre_facet |
Kamchatka |
op_source |
Известия ТИНРО, Vol 200, Iss 3, Pp 618-634 (2020) |
op_relation |
https://izvestiya.tinro-center.ru/jour/article/view/578 https://doaj.org/toc/1606-9919 https://doaj.org/toc/2658-5510 1606-9919 2658-5510 doi:10.26428/1606-9919-2020-200-618-634 https://doaj.org/article/a63498f36a5c43c2944b67261539b396 |
op_doi |
https://doi.org/10.26428/1606-9919-2020-200-618-634 |
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Izvestiya TINRO |
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200 |
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3 |
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618 |
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