Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem
Eleven sequential size-based hydroacoustic surveys conducted with a 200 kHz split-beam transducer during the summers of 2011 and 2012 were used to quantify seasonal declines in fish abundance in a boreal reservoir in Manitoba, Canada. Fish densities were sufficiently low to enable single target reso...
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Data Archiving and Networked Services (DANS)
2016
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Online Access: | https://doi.org/10.5061/dryad.nt18c |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::9b84b90083a9ac39124bf177d03fee0e 2023-05-15T17:08:54+02:00 Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem Pollom, Riley A. Rose, George A. 2016-03-30 https://doi.org/10.5061/dryad.nt18c undefined unknown Data Archiving and Networked Services (DANS) http://dx.doi.org/10.5061/dryad.nt18c https://dx.doi.org/10.5061/dryad.nt18c lic_creative-commons oai:easy.dans.knaw.nl:easy-dataset:88927 10.5061/dryad.nt18c oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:88927 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c Life sciences medicine and health care Sander canadensis Lota lota limnology hydroacoustics freshwater ecosystems Sander vitreus Notropis Coregonus clupeaformis abundance fisheries Ecology FOS: Biological sciences Lac du Bonnet Manitoba Canada envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2016 fttriple https://doi.org/10.5061/dryad.nt18c 2023-01-22T16:52:46Z Eleven sequential size-based hydroacoustic surveys conducted with a 200 kHz split-beam transducer during the summers of 2011 and 2012 were used to quantify seasonal declines in fish abundance in a boreal reservoir in Manitoba, Canada. Fish densities were sufficiently low to enable single target resolution and tracking. Target strengths converted to log2-based size-classes indicated that smaller fish were consistently more abundant than larger fish by a factor of approximately 3 for each halving of length. For all size classes, in both years, abundance (natural log) declined linearly over the summer at rates that varied from -0.067.day-1 for the smallest fish to -0.016.day-1 for the largest (R2 = 0.24–0.97). Inter-annual comparisons of size-based abundance suggested that for larger fish (>16 cm), mean winter decline rates were an order of magnitude lower (-0.001.day-1) and overall survival higher (71%) than in the main summer fishing season (mean loss rate -0.038.day-1; survival 33%). We conclude that size-based acoustic survey methods have the potential to assess within-season fish abundance dynamics, and may prove useful in long-term monitoring of productivity and hence management of boreal aquatic ecosystems. LDBS1_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on July 26th, 2011.LDBS2_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 2nd, 2011LDBS3_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 3rd, 2011LDBS4_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 15th, 2011LDBS5_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 18th, 2011LDBS6_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 27th, 2011LDBS7_All_ST.csvAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, ... Dataset Lota lota lota Unknown Canada |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care Sander canadensis Lota lota limnology hydroacoustics freshwater ecosystems Sander vitreus Notropis Coregonus clupeaformis abundance fisheries Ecology FOS: Biological sciences Lac du Bonnet Manitoba Canada envir geo |
spellingShingle |
Life sciences medicine and health care Sander canadensis Lota lota limnology hydroacoustics freshwater ecosystems Sander vitreus Notropis Coregonus clupeaformis abundance fisheries Ecology FOS: Biological sciences Lac du Bonnet Manitoba Canada envir geo Pollom, Riley A. Rose, George A. Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
topic_facet |
Life sciences medicine and health care Sander canadensis Lota lota limnology hydroacoustics freshwater ecosystems Sander vitreus Notropis Coregonus clupeaformis abundance fisheries Ecology FOS: Biological sciences Lac du Bonnet Manitoba Canada envir geo |
description |
Eleven sequential size-based hydroacoustic surveys conducted with a 200 kHz split-beam transducer during the summers of 2011 and 2012 were used to quantify seasonal declines in fish abundance in a boreal reservoir in Manitoba, Canada. Fish densities were sufficiently low to enable single target resolution and tracking. Target strengths converted to log2-based size-classes indicated that smaller fish were consistently more abundant than larger fish by a factor of approximately 3 for each halving of length. For all size classes, in both years, abundance (natural log) declined linearly over the summer at rates that varied from -0.067.day-1 for the smallest fish to -0.016.day-1 for the largest (R2 = 0.24–0.97). Inter-annual comparisons of size-based abundance suggested that for larger fish (>16 cm), mean winter decline rates were an order of magnitude lower (-0.001.day-1) and overall survival higher (71%) than in the main summer fishing season (mean loss rate -0.038.day-1; survival 33%). We conclude that size-based acoustic survey methods have the potential to assess within-season fish abundance dynamics, and may prove useful in long-term monitoring of productivity and hence management of boreal aquatic ecosystems. LDBS1_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on July 26th, 2011.LDBS2_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 2nd, 2011LDBS3_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 3rd, 2011LDBS4_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 15th, 2011LDBS5_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 18th, 2011LDBS6_All_STAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, on August 27th, 2011LDBS7_All_ST.csvAcoustic survey data (exported single target detections) from Lac du Bonnet, Manitoba, ... |
format |
Dataset |
author |
Pollom, Riley A. Rose, George A. |
author_facet |
Pollom, Riley A. Rose, George A. |
author_sort |
Pollom, Riley A. |
title |
Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
title_short |
Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
title_full |
Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
title_fullStr |
Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
title_full_unstemmed |
Data from: Size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
title_sort |
data from: size-based hydroacoustic measures of within-season fish abundance in a boreal freshwater ecosystem |
publisher |
Data Archiving and Networked Services (DANS) |
publishDate |
2016 |
url |
https://doi.org/10.5061/dryad.nt18c |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Lota lota lota |
genre_facet |
Lota lota lota |
op_source |
oai:easy.dans.knaw.nl:easy-dataset:88927 10.5061/dryad.nt18c oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:88927 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c |
op_relation |
http://dx.doi.org/10.5061/dryad.nt18c https://dx.doi.org/10.5061/dryad.nt18c |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.nt18c |
_version_ |
1766064814144094208 |