Zooplankton Community Development Dynamics during a Year in a Reservoir with Implemented Biomanipulation of Fish Stock

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F16%3A43910140" target="_blank" >RIV/62156489:43210/16:43910140 - isvavai.cz</a>

Result on the web

<a href="https://mnet.mendelu.cz/mendelnet2016/mnet_2016_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2016/mnet_2016_full.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Zooplankton Community Development Dynamics during a Year in a Reservoir with Implemented Biomanipulation of Fish Stock

Original language description

This paper deals with the relationship between zooplankton, phytoplankton, and fish communities in a water reservoir, with implemented long-term biomanipulation measures to improve water quality. The Water Reservoir Hamry is located near the village of Hlinsko in the Czech-Moravian Highlands. It has a meso-eutrophic character and it is one of the smaller and shallower water reservoirs with an area of 42 ha of water surface and average depth of 2 meters. Bio-manipulation measures in this reservoir have been implemented and monitored since 2008. Assessment of zooplankton, phytoplankton, and fish community monitoring was conducted in the 2015 season, from March to November. Simultaneously, catches of unwanted fish were carried out in order to promote top-down effect in the reservoir. The resulting values of planktonic communities have proven to be mostly negative - almost a monoculture of cyanobacteria in the phytoplankton communities for much of the growing season, negative size ratio of zooplankton, and small overall density of organisms. These values for zooplankton indicate that when the bottom-up processes dominate, the effect of biomanipulation does not have to be demonstrably successful. On the contrary, due to excessive eutrophication of the reservoir associated with inappropriate structure of phytoplankton, the filtration pressure of zooplankton is prevented. As a result, process of improving the water quality in the reservoir via biomanipulation cannot effectively take place.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

GL - Fishery

OECD FORD branch

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Project

<a href="/en/project/QJ1620240" target="_blank" >QJ1620240: Application of "top-down" biomanipulation to reduce eutrophication caused by agriculture in reservoir</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

MendelNet 2016: Proceedings of International PhD Students Conference

ISBN

978-80-7509-443-8

ISSN

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e-ISSN

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Number of pages

6

Pages from-to

308-313

Publisher name

Mendelova univerzita v Brně

Place of publication

Brno

Event location

Brno

Event date

Nov 9, 2016

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000392968500056