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Hydroacoustic observations of surface shoaling behaviour of young-of-the-year perch Perca fluviatilis (Linnaeus, 1758) with a towed upward-facing transducer

Hydroacoustic observations of surface shoaling behaviour of young-of-the-year perch Perca fluviatilis (Linnaeus, 1758) with a towed upward-facing transducer

Publikationstyp: Zeitschriftenartikel
URI (zitierfähiger Link): http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-74095
Autor/innen: Probst, Wolfgang Nikolaus; Thomas, Gregor; Eckmann, Reiner
Erscheinungsjahr: 2009
Erschienen in: Fisheries Research ; 96 (2009), 2-3. - S. 133-138. - ISSN 0165-7836
DOI (zitierfähiger Link): https://dx.doi.org/10.1016/j.fishres.2008.10.009
Zusammenfassung:
The near-surface distribution of young-of-the-year perch was observed with a towed upward beaming echosounder system (SIMRAD EK60 with a circular 7◦ transducer). Perch aggregated densely in the epilimnion during daytime and dispersed evenly below the surface at night. Shoaling commenced in late June when perch metamorphosed from the larval to juvenile stage. Average shoal width was 6.6 m and average shoal height was 2.35 m in July, when perch were observed for the last time in the pelagic zone of Lake Constance.
Upward echosounding revealed the presence and near-surface distribution of pelagic juvenile perch and therefore this method can be used as a complementary survey tool to get more precise information about the distribution, behaviour and abundance of near-surface fish.
Fachgebiet (DDC): 570 Biowissenschaften, Biologie
Schlagwörter: Echosounding, School, Depth distribution, Pelagic zone, Lake Constance
Link zur Lizenz: Deposit-Lizenz
Universitätsbibliographie: Ja

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PROBST, Wolfgang Nikolaus, Gregor THOMAS, Reiner ECKMANN, 2009. Hydroacoustic observations of surface shoaling behaviour of young-of-the-year perch Perca fluviatilis (Linnaeus, 1758) with a towed upward-facing transducer. In: Fisheries Research. 96(2-3), pp. 133-138. ISSN 0165-7836

@article{Probst2009Hydro-7919, title={Hydroacoustic observations of surface shoaling behaviour of young-of-the-year perch Perca fluviatilis (Linnaeus, 1758) with a towed upward-facing transducer}, year={2009}, doi={10.1016/j.fishres.2008.10.009}, number={2-3}, volume={96}, issn={0165-7836}, journal={Fisheries Research}, pages={133--138}, author={Probst, Wolfgang Nikolaus and Thomas, Gregor and Eckmann, Reiner} }

2009 The near-surface distribution of young-of-the-year perch was observed with a towed upward beaming echosounder system (SIMRAD EK60 with a circular 7◦ transducer). Perch aggregated densely in the epilimnion during daytime and dispersed evenly below the surface at night. Shoaling commenced in late June when perch metamorphosed from the larval to juvenile stage. Average shoal width was 6.6 m and average shoal height was 2.35 m in July, when perch were observed for the last time in the pelagic zone of Lake Constance.<br />Upward echosounding revealed the presence and near-surface distribution of pelagic juvenile perch and therefore this method can be used as a complementary survey tool to get more precise information about the distribution, behaviour and abundance of near-surface fish. Eckmann, Reiner Probst, Wolfgang Nikolaus 2011-03-24T17:38:30Z First publ. in: Fisheries Research, 96 (2009), 2-3, pp. 133-138 eng 2011-03-24T17:38:30Z Probst, Wolfgang Nikolaus Thomas, Gregor Thomas, Gregor Hydroacoustic observations of surface shoaling behaviour of young-of-the-year perch Perca fluviatilis (Linnaeus, 1758) with a towed upward-facing transducer application/pdf Eckmann, Reiner deposit-license

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