Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.)
Abstract – In a medium‐sized river in northern Finland, larval grayling shifted with growth from shallow habitats with slow velocities, fine substrata and abundant vegetation cover to deeper sites with swifter velocities, coarse substrata and sparse vegetation cover within 3 weeks. Small (17–21 mm)...
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crwiley:10.1034/j.1600-0633.2003.00013.x 2024-06-02T08:12:01+00:00 Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) Nykänen, M. Huusko, A. 2003 http://dx.doi.org/10.1034/j.1600-0633.2003.00013.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1034%2Fj.1600-0633.2003.00013.x https://onlinelibrary.wiley.com/doi/pdf/10.1034/j.1600-0633.2003.00013.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ecology of Freshwater Fish volume 12, issue 2, page 127-133 ISSN 0906-6691 1600-0633 journal-article 2003 crwiley https://doi.org/10.1034/j.1600-0633.2003.00013.x 2024-05-03T11:25:49Z Abstract – In a medium‐sized river in northern Finland, larval grayling shifted with growth from shallow habitats with slow velocities, fine substrata and abundant vegetation cover to deeper sites with swifter velocities, coarse substrata and sparse vegetation cover within 3 weeks. Small (17–21 mm) larvae preferred water depths 10–30 cm, substrata dominated by mud or sand (<2 mm), 10–70% vegetation cover and water velocities <10 cm · s −1 . Middle‐sized (22–25 mm) larvae preferred 30–90 cm depths, sandy substrata, <40% vegetation cover and velocities <10 cm · s −1 . Large (26–31 mm) larvae preferred >50 cm depths, substrata dominated by sand or boulders, <20% vegetation cover and 10–50 cm · s −1 velocities. The strict habitat requirements of the smallest larval group suggest that these habitats, in particular, are important to the early survival of grayling. Article in Journal/Newspaper Northern Finland Wiley Online Library Ecology of Freshwater Fish 12 2 127 133 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract – In a medium‐sized river in northern Finland, larval grayling shifted with growth from shallow habitats with slow velocities, fine substrata and abundant vegetation cover to deeper sites with swifter velocities, coarse substrata and sparse vegetation cover within 3 weeks. Small (17–21 mm) larvae preferred water depths 10–30 cm, substrata dominated by mud or sand (<2 mm), 10–70% vegetation cover and water velocities <10 cm · s −1 . Middle‐sized (22–25 mm) larvae preferred 30–90 cm depths, sandy substrata, <40% vegetation cover and velocities <10 cm · s −1 . Large (26–31 mm) larvae preferred >50 cm depths, substrata dominated by sand or boulders, <20% vegetation cover and 10–50 cm · s −1 velocities. The strict habitat requirements of the smallest larval group suggest that these habitats, in particular, are important to the early survival of grayling. |
format |
Article in Journal/Newspaper |
author |
Nykänen, M. Huusko, A. |
spellingShingle |
Nykänen, M. Huusko, A. Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) |
author_facet |
Nykänen, M. Huusko, A. |
author_sort |
Nykänen, M. |
title |
Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) |
title_short |
Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) |
title_full |
Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) |
title_fullStr |
Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) |
title_full_unstemmed |
Size‐related changes in habitat selection by larval grayling ( Thymallus thymallus L.) |
title_sort |
size‐related changes in habitat selection by larval grayling ( thymallus thymallus l.) |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1034/j.1600-0633.2003.00013.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1034%2Fj.1600-0633.2003.00013.x https://onlinelibrary.wiley.com/doi/pdf/10.1034/j.1600-0633.2003.00013.x |
genre |
Northern Finland |
genre_facet |
Northern Finland |
op_source |
Ecology of Freshwater Fish volume 12, issue 2, page 127-133 ISSN 0906-6691 1600-0633 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1034/j.1600-0633.2003.00013.x |
container_title |
Ecology of Freshwater Fish |
container_volume |
12 |
container_issue |
2 |
container_start_page |
127 |
op_container_end_page |
133 |
_version_ |
1800758327706124288 |