The response of the young of the year fish to river obstacles: Functional and numerical linkages between dams, weirs, fish habitat guilds and biotic integrity across large spatial scale

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00020711%3A_____%2F12%3A00003600" target="_blank" >RIV/00020711:_____/12:00003600 - isvavai.cz</a>
Result on the web
<a href="http://www.journals.elsevier.com/ecological-indicators" target="_blank" >http://www.journals.elsevier.com/ecological-indicators</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ecolind.2012.05.018" target="_blank" >10.1016/j.ecolind.2012.05.018</a>

Result language
angličtina
Original language name
The response of the young of the year fish to river obstacles: Functional and numerical linkages between dams, weirs, fish habitat guilds and biotic integrity across large spatial scale
Original language description
Obstacles affect fish community structure, which represents a fundamental component of the biological integrity. However, a quantitative relationship linking the response of fish communities to obstacles is lacking. We assessed fish from a 54 study sitesacross hydrological network. The fish community was expressed as the probability of guild dominance. We examined the indicative value and responsiveness of two indices of biological integrity (EFI, CZI). We analysed two types of obstacles for which numerical and distance descriptors were derived using GIS. All obstacles together were the most relevant predictor of fish community. The negative impact on fish increased with the increasing number of obstacles and the decreasing relative distance. Our results contribute an prerequisite to river restoration, identifying where in the hydrological networks ecological studies or restoration actions would produce the most effective results.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EH - Ecology - communities
OECD FORD branch
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Project
<a href="/en/project/TD010045" target="_blank" >TD010045: A numerical and functional analysis of aquaculture and recreational fishing to increase an competitiveness ability of the Czech Republic and to improve the status of freshwater ecosystems.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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