Relative abundance of Lake trout and burbot in the main basin of Lake Michigan in the early 1930s
Identifieur interne : 000D13 ( Main/Exploration ); précédent : 000D12; suivant : 000D14Relative abundance of Lake trout and burbot in the main basin of Lake Michigan in the early 1930s
Auteurs : C. Ward [États-Unis] ; R. L. Eshenroder [États-Unis] ; J. R. Bence [États-Unis]Source :
- Transactions of the American Fisheries Society : (1900) [ 0002-8487 ] ; 2000.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We used general linear models to compare and to assess the sources of variation in CPUEs (catches per unit effort) of lake trout Salvelinus namaycush and burbot Lota Iota netted in small-mesh gill nets from the main basin of Lake Michigan in the early 1930s, before populations of both species collapsed. Spring, summer, and fall CPUEs were modeled separately. In all seasons combined, CPUEs were over 2.5 times greater for lake trout than for burbot, and lake trout CPUEs were greater than burbot CPUEs in five of six regions of the lake. The hypothesized sources of variability in loge(CPUE) included lake region, depth (either as a linear [depth only] or a quadratic [depth and depth2 included] relationship), number of nights out that the nets fished (also as either a linear or quadratic relationship), and the possibility that the effects of depth could vary among regions. The models predicted 57-68% of the variation in lake trout CPUE and 29-37% of the variation in burbot CPUE (log scales). Lake region was highly significant for both species in all seasons. In all seasons, the relationship between lake trout loge(CPUE) and depth was quadratic and varied among regions. For lake trout we did not find any effects of number of nights out. Burbot loge(CPUE) varied linearly with depth and with nights out in the spring. In the summer, loge(CPUE) for hurbot varied linearly with nights out, and its relationship with depth was quadratic and varied among regions. In the fall, quadratic relationships between burbot loge(CPUE) and depth again differed among regions, but there was no relationship with nights out.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000118
- to stream PascalFrancis, to step Curation: 000001
- to stream PascalFrancis, to step Checkpoint: 000113
- to stream Main, to step Merge: 000D59
- to stream Main, to step Curation: 000D13
Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Relative abundance of Lake trout and burbot in the main basin of Lake Michigan in the early 1930s</title><author><name sortKey="Ward, C" sort="Ward, C" uniqKey="Ward C" first="C." last="Ward">C. Ward</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Great Lakes Fishery Commission, 2100 Commonwealth Boulevard, Suite 209</s1><s2>Ann Arbor, Michigan 48105</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Ann Arbor, Michigan 48105</wicri:noRegion></affiliation></author><author><name sortKey="Eshenroder, R L" sort="Eshenroder, R L" uniqKey="Eshenroder R" first="R. L." last="Eshenroder">R. L. Eshenroder</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Great Lakes Fishery Commission, 2100 Commonwealth Boulevard, Suite 209</s1><s2>Ann Arbor, Michigan 48105</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Ann Arbor, Michigan 48105</wicri:noRegion></affiliation></author><author><name sortKey="Bence, J R" sort="Bence, J R" uniqKey="Bence J" first="J. R." last="Bence">J. R. Bence</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Michigan State University, Department of Fisheries and Wildlife, 13 Natural Resources Building</s1><s2>East Lansing, Michigan 48824</s2><s3>USA</s3><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>East Lansing, Michigan 48824</wicri:noRegion><orgName type="university">Université d'État du Michigan</orgName><placeName><settlement type="city">East Lansing</settlement><region type="state">Michigan</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">00-0117750</idno><date when="2000">2000</date><idno type="stanalyst">PASCAL 00-0117750 INIST</idno><idno type="RBID">Pascal:00-0117750</idno><idno type="wicri:Area/PascalFrancis/Corpus">000118</idno><idno type="wicri:Area/PascalFrancis/Curation">000001</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000113</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000113</idno><idno type="wicri:doubleKey">0002-8487:2000:Ward C:relative:abundance:of</idno><idno type="wicri:Area/Main/Merge">000D59</idno><idno type="wicri:Area/Main/Curation">000D13</idno><idno type="wicri:Area/Main/Exploration">000D13</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Relative abundance of Lake trout and burbot in the main basin of Lake Michigan in the early 1930s</title><author><name sortKey="Ward, C" sort="Ward, C" uniqKey="Ward C" first="C." last="Ward">C. Ward</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Great Lakes Fishery Commission, 2100 Commonwealth Boulevard, Suite 209</s1><s2>Ann Arbor, Michigan 48105</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Ann Arbor, Michigan 48105</wicri:noRegion></affiliation></author><author><name sortKey="Eshenroder, R L" sort="Eshenroder, R L" uniqKey="Eshenroder R" first="R. L." last="Eshenroder">R. L. Eshenroder</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Great Lakes Fishery Commission, 2100 Commonwealth Boulevard, Suite 209</s1><s2>Ann Arbor, Michigan 48105</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Ann Arbor, Michigan 48105</wicri:noRegion></affiliation></author><author><name sortKey="Bence, J R" sort="Bence, J R" uniqKey="Bence J" first="J. R." last="Bence">J. R. Bence</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Michigan State University, Department of Fisheries and Wildlife, 13 Natural Resources Building</s1><s2>East Lansing, Michigan 48824</s2><s3>USA</s3><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>East Lansing, Michigan 48824</wicri:noRegion><orgName type="university">Université d'État du Michigan</orgName><placeName><settlement type="city">East Lansing</settlement><region type="state">Michigan</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Transactions of the American Fisheries Society : (1900)</title><title level="j" type="abbreviated">Trans. Am. Fish. Soc. : (1900)</title><idno type="ISSN">0002-8487</idno><imprint><date when="2000">2000</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Transactions of the American Fisheries Society : (1900)</title><title level="j" type="abbreviated">Trans. Am. Fish. Soc. : (1900)</title><idno type="ISSN">0002-8487</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>1930-1940</term><term>Catch effort</term><term>Ecological abundance</term><term>Interspecific comparison</term><term>Lake Michigan</term><term>Linear model</term><term>Lota lota</term><term>Salvelinus namaycush</term><term>Spatial distribution</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Effort pêche</term><term>Comparaison interspécifique</term><term>1930-1940</term><term>Abondance écologique</term><term>Répartition spatiale</term><term>Modèle linéaire</term><term>Lac Michigan</term><term>Salvelinus namaycush</term><term>Lota lota</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We used general linear models to compare and to assess the sources of variation in CPUEs (catches per unit effort) of lake trout Salvelinus namaycush and burbot Lota Iota netted in small-mesh gill nets from the main basin of Lake Michigan in the early 1930s, before populations of both species collapsed. Spring, summer, and fall CPUEs were modeled separately. In all seasons combined, CPUEs were over 2.5 times greater for lake trout than for burbot, and lake trout CPUEs were greater than burbot CPUEs in five of six regions of the lake. The hypothesized sources of variability in log<sub>e</sub>(CPUE) included lake region, depth (either as a linear [depth only] or a quadratic [depth and depth<sup>2</sup> included] relationship), number of nights out that the nets fished (also as either a linear or quadratic relationship), and the possibility that the effects of depth could vary among regions. The models predicted 57-68% of the variation in lake trout CPUE and 29-37% of the variation in burbot CPUE (log scales). Lake region was highly significant for both species in all seasons. In all seasons, the relationship between lake trout log<sub>e</sub>(CPUE) and depth was quadratic and varied among regions. For lake trout we did not find any effects of number of nights out. Burbot log<sub>e</sub>(CPUE) varied linearly with depth and with nights out in the spring. In the summer, log<sub>e</sub>(CPUE) for hurbot varied linearly with nights out, and its relationship with depth was quadratic and varied among regions. In the fall, quadratic relationships between burbot log<sub>e</sub>(CPUE) and depth again differed among regions, but there was no relationship with nights out.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Michigan</li></region><settlement><li>East Lansing</li></settlement><orgName><li>Université d'État du Michigan</li></orgName></list><tree><country name="États-Unis"><noRegion><name sortKey="Ward, C" sort="Ward, C" uniqKey="Ward C" first="C." last="Ward">C. Ward</name></noRegion><name sortKey="Bence, J R" sort="Bence, J R" uniqKey="Bence J" first="J. R." last="Bence">J. R. Bence</name><name sortKey="Eshenroder, R L" sort="Eshenroder, R L" uniqKey="Eshenroder R" first="R. L." last="Eshenroder">R. L. Eshenroder</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Eau/explor/LotaV3/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000D13 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000D13 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Eau
|area= LotaV3
|flux= Main
|étape= Exploration
|type= RBID
|clé= Pascal:00-0117750
|texte= Relative abundance of Lake trout and burbot in the main basin of Lake Michigan in the early 1930s
}}
| This area was generated with Dilib version V0.6.39. |  |