Seasonal spatial distribution of juvenile lake sturgeon in Muskegon Lake, Michigan, USA
Identifieur interne : 000324 ( Main/Merge ); précédent : 000323; suivant : 000325Seasonal spatial distribution of juvenile lake sturgeon in Muskegon Lake, Michigan, USA
Auteurs : Matthew E. L. Altenritter [États-Unis] ; Alex C. Wieten [États-Unis] ; Carl R. Ruetz Iii [États-Unis] ; Kregg M. Smith [États-Unis]Source :
- Ecology of Freshwater Fish [ 0906-6691 ] ; 2013-07.
Abstract
We examined seasonal spatial distribution and diel movements of juvenile lake sturgeon Acipenser fulvescens in Muskegon Lake, Michigan (a protected, drowned river mouth lake that links the Muskegon River to Lake Michigan). We surgically implanted ultrasonic tags in 20 juveniles (age 1–7) captured in gill nets to track their locations during August–December 2008/2009 and September 2010–October 2011. Most juveniles were observed ≤1.5 km from the mouth of the Muskegon River in Muskegon Lake at a mean depth of 7.5 m (SE = 1.3 m) during summer. In fall, juveniles moved away from the river mouth to the deepest part of Muskegon Lake and were observed at a mean depth of 15.8 m (SE = 1.3 m) during winter. The shift in spatial distribution coincided with fall turnover (i.e., loss of thermal stratification) and with changes in dissolved oxygen (DO) concentrations in the hypolimnion. During summer, DO concentrations in the hypolimnion were typically <4 mg·l−1 in the deepest part of Muskegon Lake and DO concentrations at locations of tagged lake sturgeon were >7 mg·l−1 in 94% of instances. Tracking in 2009 revealed no significant change in depth distribution or movement over the diel cycle. We only observed two tagged juveniles immigrating to Lake Michigan, suggesting that juveniles use Muskegon Lake for multiple years. Our results suggest that: (i) Muskegon Lake serves as an important nursery habitat for juvenile lake sturgeon that hatched in the Muskegon River before they enter Lake Michigan and (ii) seasonal changes in DO concentration in the hypolimnion likely affect the spatial distribution of juveniles in Muskegon Lake.
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DOI: 10.1111/eff.12040
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Seasonal spatial distribution of juvenile lake sturgeon in Muskegon Lake, Michigan, USA</title><author><name sortKey="Altenritter, Matthew E L" sort="Altenritter, Matthew E L" uniqKey="Altenritter M" first="Matthew E. L." last="Altenritter">Matthew E. L. Altenritter</name></author><author><name sortKey="Wieten, Alex C" sort="Wieten, Alex C" uniqKey="Wieten A" first="Alex C." last="Wieten">Alex C. Wieten</name></author><author><name sortKey="Ruetz Iii, Carl R" sort="Ruetz Iii, Carl R" uniqKey="Ruetz Iii C" first="Carl R." last="Ruetz Iii">Carl R. Ruetz Iii</name></author><author><name sortKey="Smith, Kregg M" sort="Smith, Kregg M" uniqKey="Smith K" first="Kregg M." last="Smith">Kregg M. 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L." last="Altenritter">Matthew E. L. Altenritter</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, Michigan, 49441, Muskegon</wicri:regionArea><wicri:noRegion>Muskegon</wicri:noRegion></affiliation></author><author><name sortKey="Wieten, Alex C" sort="Wieten, Alex C" uniqKey="Wieten A" first="Alex C." last="Wieten">Alex C. Wieten</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Annis Water Resources Institute, Grand Valley State University, 740 West Shoreline Drive, Michigan, 49441, Muskegon</wicri:regionArea><wicri:noRegion>Muskegon</wicri:noRegion></affiliation></author><author><name sortKey="Ruetz Iii, Carl R" sort="Ruetz Iii, Carl R" uniqKey="Ruetz Iii C" first="Carl R." last="Ruetz Iii">Carl R. 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Smith</name><affiliation wicri:level="1"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Fisheries Division, Michigan Department of Natural Resources, 621 North 10th Street, Michigan, 49080, Plainwell</wicri:regionArea><wicri:noRegion>Plainwell</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Ecology of Freshwater Fish</title><title level="j" type="abbrev">Ecol Freshw Fish</title><idno type="ISSN">0906-6691</idno><idno type="eISSN">1600-0633</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="2013-07">2013-07</date><biblScope unit="volume">22</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="467">467</biblScope><biblScope unit="page" to="478">478</biblScope></imprint><idno type="ISSN">0906-6691</idno></series><idno type="istex">7948853B3F98B1C4CBC6E6803404F04F239A390A</idno><idno type="DOI">10.1111/eff.12040</idno><idno type="ArticleID">EFF12040</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0906-6691</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">We examined seasonal spatial distribution and diel movements of juvenile lake sturgeon Acipenser fulvescens in Muskegon Lake, Michigan (a protected, drowned river mouth lake that links the Muskegon River to Lake Michigan). We surgically implanted ultrasonic tags in 20 juveniles (age 1–7) captured in gill nets to track their locations during August–December 2008/2009 and September 2010–October 2011. Most juveniles were observed ≤1.5 km from the mouth of the Muskegon River in Muskegon Lake at a mean depth of 7.5 m (SE = 1.3 m) during summer. In fall, juveniles moved away from the river mouth to the deepest part of Muskegon Lake and were observed at a mean depth of 15.8 m (SE = 1.3 m) during winter. The shift in spatial distribution coincided with fall turnover (i.e., loss of thermal stratification) and with changes in dissolved oxygen (DO) concentrations in the hypolimnion. During summer, DO concentrations in the hypolimnion were typically <4 mg·l−1 in the deepest part of Muskegon Lake and DO concentrations at locations of tagged lake sturgeon were >7 mg·l−1 in 94% of instances. Tracking in 2009 revealed no significant change in depth distribution or movement over the diel cycle. We only observed two tagged juveniles immigrating to Lake Michigan, suggesting that juveniles use Muskegon Lake for multiple years. Our results suggest that: (i) Muskegon Lake serves as an important nursery habitat for juvenile lake sturgeon that hatched in the Muskegon River before they enter Lake Michigan and (ii) seasonal changes in DO concentration in the hypolimnion likely affect the spatial distribution of juveniles in Muskegon Lake.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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