Diel changeover of fish assemblages in shallow sandy habitats of lowland rivers of different sizes

Michał Nowak , Artur Klaczak , Ján Koščo , Paweł Szczerbik , Jakub Fedorčák , Juraj Hajdú , Włodzimierz Popek

Abstract

Diel dynamics of species richness and fish abundance were studied in three lowland rivers that differed significantly in size (discharge) in to the upper Vistula River drainage system (Poland). Shallow sandy habitats at point bars were repeatedly sampled with beach seining over 24-h periods. Species richness peaked at dusk and then decreased throughout the 24-h period in all the rivers. Overall fish abundance changed similarly in the smallest and the largest river, whereas in the mid-sized river it increased in the late afternoon hours. Some species (three gudgeon species, golden loach, and chub) were persistently nocturnal, whereas others (dace, bleak, and roach) shifted to diurnal activity in the mid-sized and large rivers. These differences in diel changes in the abundance of certain species might be explained in the context of variation in availability (i.e., proximity) of other, more heterogeneous habitats.
Author Michał Nowak (DoAS / DoIaF)
Michał Nowak,,
- Department of Ichthyobiology and Fisheries
, Artur Klaczak (DoAS / DoIaF)
Artur Klaczak,,
- Department of Ichthyobiology and Fisheries
, Ján Koščo
Ján Koščo,,
-
, Paweł Szczerbik (DoAS / DoIaF)
Paweł Szczerbik,,
- Department of Ichthyobiology and Fisheries
, Jakub Fedorčák
Jakub Fedorčák,,
-
, Juraj Hajdú
Juraj Hajdú,,
-
, Włodzimierz Popek (FoAS / DoIaF)
Włodzimierz Popek,,
- Department of Ichthyobiology and Fisheries
Journal seriesKnowledge and Management of Aquatic Ecosystems, ISSN 1961-9502, (N/A 100 pkt)
Issue year2019
No420
Pages1-7
Publication size in sheets0.5
Article number41
Keywords in English24-h cycle, lotic ecosystems, sandbars, riverine fishes, spatio-temporal variation
ASJC Classification1104 Aquatic Science; 2303 Ecology; 2308 Management, Monitoring, Policy and Law; 2309 Nature and Landscape Conservation; 2312 Water Science and Technology
DOIDOI:10.1051/kmae/2019037
Languageen angielski
File
pdf 793,37 KB
Score (nominal)100
Score sourcejournalList
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2016 = 0.872; WoS Impact Factor: 2018 = 1.265 (2) - 2018=1.36 (5)
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