Open WL Archief (OWA)

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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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A bit of quiet between the migrations: the resting life of the European eel during their freshwater growth phase in a small stream Ovidio, M.; Seredynski, A.L.; Philippart, J.C.; Matondo, B.N. (2013). A bit of quiet between the migrations: the resting life of the European eel during their freshwater growth phase in a small stream. Aquat. Ecol. 47(3): 291-301. https://dx.doi.org/10.1007/s10452-013-9444-1 In: Aquatic Ecology. Springer: Dordrecht; London; Boston. ISSN 1386-2588; e-ISSN 1573-5125, meer

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Beschikbaar in	Auteurs
VLIZ: Open Marine Archive 250834 [ download pdf ]

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Trefwoorden

Habitat Home range Measurement > Telemetry Minimum flow Mobility Marien/Kust; Zoet water

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Auteurs		Top
Ovidio, M., meer Seredynski, A.L., meer Philippart, J.C., meer Matondo, B.N., meer

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Abstract

The movements and habitat use of resident yellow eels were studied in a stream stretch having both natural and minimum flow zones. N = 12 individuals (total length 505–802 mm) were surgically tagged with radio transmitters and released at their capture sites. They were located using manual radio receivers during the daytime from 2 to 5 days/week over periods ranging from 200 to 329 days, for a total of 1,098 positions. Eels showed home ranges ranging from 33 to 341 m (median value, 62 m), displayed strong fidelity to sites and demonstrated a great degree of plasticity in habitat use. Eels were slightly mobile throughout the year, but their movements were season and temperature dependent, with a maximum during the spring (mean water temperature, 12 °C) and a minimum in winter (3 °C). Stones and roots (utilization rate greater than 50 % of eels for more than 30 % of location days) were significantly the most frequently used habitats. Between the two flow zones, the natural flow was the most occupied, with a significantly higher proportion of resident eels (66.7 % of radio-tagged yellow eels) and longer occupation (81 % of location days) than the minimum flow zone with less suitable habitats.

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