Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322
Owing to limited knowledge of the habitat use and diet of juvenile Arctic charr from the High Arctic, particularly young-of-the-year (YOY), we assembled data obtained from samples taken in and around Lake Hazen, Nunavut, Canada, to assess juvenile habitat use and feeding. Juvenile charr demonstrated...
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ftdatacite:10.1594/pangaea.837055 2023-05-15T14:30:00+02:00 Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 Sinnatamby, R Niloshini Babaluk, John A Power, Geoff Reist, James D Power, Michael 2012 application/zip https://dx.doi.org/10.1594/pangaea.837055 https://doi.pangaea.de/10.1594/PANGAEA.837055 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1111/j.1600-0633.2012.00552.x Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY International Polar Year 2007-2008 IPY Collection article Supplementary Collection of Datasets 2012 ftdatacite https://doi.org/10.1594/pangaea.837055 https://doi.org/10.1111/j.1600-0633.2012.00552.x 2021-11-05T12:55:41Z Owing to limited knowledge of the habitat use and diet of juvenile Arctic charr from the High Arctic, particularly young-of-the-year (YOY), we assembled data obtained from samples taken in and around Lake Hazen, Nunavut, Canada, to assess juvenile habitat use and feeding. Juvenile charr demonstrated a preference for stream environments, particularly those fed by warm upstream ponds. Charr occupying both stream and nearshore lake habitats were found to feed similarly, with chironomids occurring most frequently in diets. Some older stream-dwelling charr preyed on smaller, younger Arctic charr. Preferred stream occupancy is likely mediated by physical barriers created mainly by water velocity, and by distance from the lake, lake-ice dynamics, low water depth, and turbidity. Water velocities resulted in stream habitat segregation by size, with YOY mainly found in low-velocity pools and back eddies adjacent to stream banks, but not in water velocities >0.1 m/s. Greatest charr densities in streams were found in small, shallow, slow-flowing side channels, which are highly susceptible to drought. Under predicted climate change scenarios, streams fed by small ponds will be susceptible to intermittent flow conditions, which could result in increased competition among juvenile charr for the remaining stream habitats. In addition, glacier-fed streams are likely to experience increased flow conditions that will exacerbate physical barriers created by water velocity and further reduce the availability of preferred stream habitat. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 Article in Journal/Newspaper Arctic charr Arctic Climate change Ellesmere Island glacier* International Polar Year IPY Lake Hazen Nunavut Salvelinus alpinus DataCite Metadata Store (German National Library of Science and Technology) Arctic Nunavut Ellesmere Island Canada Lake Hazen ENVELOPE(-71.017,-71.017,81.797,81.797) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
International Polar Year 2007-2008 IPY |
spellingShingle |
International Polar Year 2007-2008 IPY Sinnatamby, R Niloshini Babaluk, John A Power, Geoff Reist, James D Power, Michael Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 |
topic_facet |
International Polar Year 2007-2008 IPY |
description |
Owing to limited knowledge of the habitat use and diet of juvenile Arctic charr from the High Arctic, particularly young-of-the-year (YOY), we assembled data obtained from samples taken in and around Lake Hazen, Nunavut, Canada, to assess juvenile habitat use and feeding. Juvenile charr demonstrated a preference for stream environments, particularly those fed by warm upstream ponds. Charr occupying both stream and nearshore lake habitats were found to feed similarly, with chironomids occurring most frequently in diets. Some older stream-dwelling charr preyed on smaller, younger Arctic charr. Preferred stream occupancy is likely mediated by physical barriers created mainly by water velocity, and by distance from the lake, lake-ice dynamics, low water depth, and turbidity. Water velocities resulted in stream habitat segregation by size, with YOY mainly found in low-velocity pools and back eddies adjacent to stream banks, but not in water velocities >0.1 m/s. Greatest charr densities in streams were found in small, shallow, slow-flowing side channels, which are highly susceptible to drought. Under predicted climate change scenarios, streams fed by small ponds will be susceptible to intermittent flow conditions, which could result in increased competition among juvenile charr for the remaining stream habitats. In addition, glacier-fed streams are likely to experience increased flow conditions that will exacerbate physical barriers created by water velocity and further reduce the availability of preferred stream habitat. : Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 |
format |
Article in Journal/Newspaper |
author |
Sinnatamby, R Niloshini Babaluk, John A Power, Geoff Reist, James D Power, Michael |
author_facet |
Sinnatamby, R Niloshini Babaluk, John A Power, Geoff Reist, James D Power, Michael |
author_sort |
Sinnatamby, R Niloshini |
title |
Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 |
title_short |
Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 |
title_full |
Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 |
title_fullStr |
Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 |
title_full_unstemmed |
Habitat preferences, fork lengths and isotopic ratios of Arctic charr (Salvelinus alpinus) in and around Lake Hazen, Ellesmere Island, supplement to: Sinnatamby, R Niloshini; Babaluk, John A; Power, Geoff; Reist, James D; Power, Michael (2012): Summer habitat use and feeding of juvenile Arctic charr, Salvelinus alpinus, in the Canadian High Arctic. Ecology of Freshwater Fish, 21(2), 309-322 |
title_sort |
habitat preferences, fork lengths and isotopic ratios of arctic charr (salvelinus alpinus) in and around lake hazen, ellesmere island, supplement to: sinnatamby, r niloshini; babaluk, john a; power, geoff; reist, james d; power, michael (2012): summer habitat use and feeding of juvenile arctic charr, salvelinus alpinus, in the canadian high arctic. ecology of freshwater fish, 21(2), 309-322 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2012 |
url |
https://dx.doi.org/10.1594/pangaea.837055 https://doi.pangaea.de/10.1594/PANGAEA.837055 |
long_lat |
ENVELOPE(-71.017,-71.017,81.797,81.797) |
geographic |
Arctic Nunavut Ellesmere Island Canada Lake Hazen |
geographic_facet |
Arctic Nunavut Ellesmere Island Canada Lake Hazen |
genre |
Arctic charr Arctic Climate change Ellesmere Island glacier* International Polar Year IPY Lake Hazen Nunavut Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Climate change Ellesmere Island glacier* International Polar Year IPY Lake Hazen Nunavut Salvelinus alpinus |
op_relation |
https://dx.doi.org/10.1111/j.1600-0633.2012.00552.x |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.837055 https://doi.org/10.1111/j.1600-0633.2012.00552.x |
_version_ |
1766303940371021824 |