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Article

Sediment as a Refuge Spot for Planktonic Crustaceans

1
Department of Biology, Zoology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, HR-10000 Zagreb, Croatia
2
Department of Water Protection, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznan, Poland
3
Elektroprojekt D.D., Alexandera Von Humboldta 4, HR-10000 Zagreb, Croatia
4
Department of Fisheries, Apiculture, Wildlife Management and Special Zoology, Faculty of Agriculture, University of Zagreb, HR-10000 Zagreb, Croatia
5
State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
6
Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: José Luis Sánchez-Lizaso
Water 2022, 14(11), 1680; https://doi.org/10.3390/w14111680
Received: 28 April 2022 / Revised: 18 May 2022 / Accepted: 19 May 2022 / Published: 24 May 2022
(This article belongs to the Special Issue Functioning of Small Water Bodies)
The littoral zone of shallow water bodies (SWB) is often considered in relation to predator–prey interactions. In this study we assumed that the littoral sediment serves as a refuge for planktonic microcrustaceans, mediated by size-dependent fish predation. In order to recognise the impact of fish on their prey, we determined: (i) the assemblage and size structure of crustaceans and fish; and (ii) the biotic interactions along the gradient of the heterogeneity of the littoral zone. The results showed that in the sediment of macrophyte-dominated SWB, large-sized cladocerans predominated and were preyed upon by smaller-sized fish. In the sediment of macrophyte-absent SWB, large-sized copepods dominated, due to the predation risk of larger-sized fish. Cladoceran females with egg broods mostly selected sediment as shelter. Cladocera/Copepoda ratios were lower in the littoral of vegetated SWB, and higher in unvegetated SWB. The ratios in the adjacent sediment revealed an opposite pattern. It is important to point out the findings of planktonic crustacean species in the sediment of SWB are not recorded in the littoral water. The result of this study will contribute to the knowledge of defence strategy mechanisms developed by zooplankters against predators. View Full-Text
Keywords: Cladocera; Copepoda; fish; predator-prey interactions; shallow lakes Cladocera; Copepoda; fish; predator-prey interactions; shallow lakes
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MDPI and ACS Style

Špoljar, M.; Kuczyńska-Kippen, N.; Dražina, T.; Fressl, J.; Ternjej, I.; Tomljanović, T.; Zhang, C.; Purgar, M.; Čorkalo, M.; Kekelj, L. Sediment as a Refuge Spot for Planktonic Crustaceans. Water 2022, 14, 1680. https://doi.org/10.3390/w14111680

AMA Style

Špoljar M, Kuczyńska-Kippen N, Dražina T, Fressl J, Ternjej I, Tomljanović T, Zhang C, Purgar M, Čorkalo M, Kekelj L. Sediment as a Refuge Spot for Planktonic Crustaceans. Water. 2022; 14(11):1680. https://doi.org/10.3390/w14111680

Chicago/Turabian Style

Špoljar, Maria, Natalia Kuczyńska-Kippen, Tvrtko Dražina, Jelena Fressl, Ivančica Ternjej, Tea Tomljanović, Chen Zhang, Marija Purgar, Marko Čorkalo, and Lana Kekelj. 2022. "Sediment as a Refuge Spot for Planktonic Crustaceans" Water 14, no. 11: 1680. https://doi.org/10.3390/w14111680

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