Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body
Accurate information on the location and condition of spawning grounds of environmentally-demanding lithophilic fish species, which may use only a very small area of their habitat for spawning, is critical to their conservation and fisheries management but is frequently lacking. Here, the new hydroa...
Published in: | Ecological Informatics |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2015
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/509137/ https://nora.nerc.ac.uk/id/eprint/509137/1/N509137PP.pdf https://doi.org/10.1016/j.ecoinf.2015.05.009 |
id |
ftnerc:oai:nora.nerc.ac.uk:509137 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:509137 2023-05-15T14:30:06+02:00 Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body Winfield, Ian J. van Rijn, Joey Valley, Ray D. 2015-11 text http://nora.nerc.ac.uk/id/eprint/509137/ https://nora.nerc.ac.uk/id/eprint/509137/1/N509137PP.pdf https://doi.org/10.1016/j.ecoinf.2015.05.009 en eng Elsevier https://nora.nerc.ac.uk/id/eprint/509137/1/N509137PP.pdf Winfield, Ian J.; van Rijn, Joey; Valley, Ray D. 2015 Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body. Ecological Informatics, 30. 235-240. https://doi.org/10.1016/j.ecoinf.2015.05.009 <https://doi.org/10.1016/j.ecoinf.2015.05.009> cc_by_nc_nd_4 CC-BY-NC-ND Ecology and Environment Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.1016/j.ecoinf.2015.05.009 2023-02-04T19:40:42Z Accurate information on the location and condition of spawning grounds of environmentally-demanding lithophilic fish species, which may use only a very small area of their habitat for spawning, is critical to their conservation and fisheries management but is frequently lacking. Here, the new hydroacoustic system BioBase, which enables the rapid characterisation of features including lake bottom hardness (with soft, medium hard and hard bottoms represented by values of 0 to 0.25, 0.25 to 0.40, and 0.40 to 0.50, respectively), was applied to known spawning grounds of Arctic charr (Salvelinus alpinus) in the north basin of the eutrophicated lake of Windermere, U.K. The output of BioBase was successfully ground-truthed using an independent video-based system (r2 = 0.48, F = 17.705, p < 0.001) and depth and bottom hardness descriptive statistics were produced for six spawning grounds. Average depth ranged from 9.4 m (North Thompson Holme) to 38.5 m (Balla Wray), while average bottom hardness ranged from 0.254 (Low Wray Bay) to 0.303 (North Thompson Holme). Detailed visual outputs were also produced for contrasting shallow (North Thompson Holme) and deep (Holbeck Point) spawning grounds, both of which showed high within-site spatial variation in bottom hardness and thus in suitability for spawning. Findings were consistent with earlier, less quantitative, interpretations of the possible effects of eutrophication and associated increased deposition of fine sediments on local Arctic charr reproduction. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Natural Environment Research Council: NERC Open Research Archive Arctic Holme ENVELOPE(23.340,23.340,69.960,69.960) Ecological Informatics 30 235 240 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Ecology and Environment |
spellingShingle |
Ecology and Environment Winfield, Ian J. van Rijn, Joey Valley, Ray D. Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
topic_facet |
Ecology and Environment |
description |
Accurate information on the location and condition of spawning grounds of environmentally-demanding lithophilic fish species, which may use only a very small area of their habitat for spawning, is critical to their conservation and fisheries management but is frequently lacking. Here, the new hydroacoustic system BioBase, which enables the rapid characterisation of features including lake bottom hardness (with soft, medium hard and hard bottoms represented by values of 0 to 0.25, 0.25 to 0.40, and 0.40 to 0.50, respectively), was applied to known spawning grounds of Arctic charr (Salvelinus alpinus) in the north basin of the eutrophicated lake of Windermere, U.K. The output of BioBase was successfully ground-truthed using an independent video-based system (r2 = 0.48, F = 17.705, p < 0.001) and depth and bottom hardness descriptive statistics were produced for six spawning grounds. Average depth ranged from 9.4 m (North Thompson Holme) to 38.5 m (Balla Wray), while average bottom hardness ranged from 0.254 (Low Wray Bay) to 0.303 (North Thompson Holme). Detailed visual outputs were also produced for contrasting shallow (North Thompson Holme) and deep (Holbeck Point) spawning grounds, both of which showed high within-site spatial variation in bottom hardness and thus in suitability for spawning. Findings were consistent with earlier, less quantitative, interpretations of the possible effects of eutrophication and associated increased deposition of fine sediments on local Arctic charr reproduction. |
format |
Article in Journal/Newspaper |
author |
Winfield, Ian J. van Rijn, Joey Valley, Ray D. |
author_facet |
Winfield, Ian J. van Rijn, Joey Valley, Ray D. |
author_sort |
Winfield, Ian J. |
title |
Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
title_short |
Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
title_full |
Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
title_fullStr |
Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
title_full_unstemmed |
Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
title_sort |
hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body |
publisher |
Elsevier |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/509137/ https://nora.nerc.ac.uk/id/eprint/509137/1/N509137PP.pdf https://doi.org/10.1016/j.ecoinf.2015.05.009 |
long_lat |
ENVELOPE(23.340,23.340,69.960,69.960) |
geographic |
Arctic Holme |
geographic_facet |
Arctic Holme |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_relation |
https://nora.nerc.ac.uk/id/eprint/509137/1/N509137PP.pdf Winfield, Ian J.; van Rijn, Joey; Valley, Ray D. 2015 Hydroacoustic quantification and assessment of spawning grounds of a lake salmonid in a eutrophicated water body. Ecological Informatics, 30. 235-240. https://doi.org/10.1016/j.ecoinf.2015.05.009 <https://doi.org/10.1016/j.ecoinf.2015.05.009> |
op_rights |
cc_by_nc_nd_4 |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.ecoinf.2015.05.009 |
container_title |
Ecological Informatics |
container_volume |
30 |
container_start_page |
235 |
op_container_end_page |
240 |
_version_ |
1766304016787046400 |