Hydrologic connectivity affects fish assemblage structure, diversity, and ecological traits in the unregulated Gambia River, West Africa

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F12%3A00368733" target="_blank" >RIV/68081766:_____/12:00368733 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1111/j.1744-7429.2011.00840.x" target="_blank" >http://dx.doi.org/10.1111/j.1744-7429.2011.00840.x</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/j.1744-7429.2011.00840.x" target="_blank" >10.1111/j.1744-7429.2011.00840.x</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hydrologic connectivity affects fish assemblage structure, diversity, and ecological traits in the unregulated Gambia River, West Africa

Popis výsledku v původním jazyce

The Gambia River of West Africa, scheduled to undergo construction of a major dam, is a large tropical river with lateral connectivity across its floodplain and a natural flow regime. We compared patterns of fish diversity, habitat use, fish assemblage structure, and the distribution of trophic position and body morphology in riverine and floodplain habitats in Niokolo Koba National Park, downstream of the planned dam. A total of 49 fish species were captured. Fish species exhibited a range of habitat use patterns including habitat generalist, specificity to particular habitats, and apparent lateral migration among habitats between seasons. Species richness was homogenous among habitats in the wet season yet increased with isolation from the main channel in the dry seasons. Our results suggest that homogenization of floodplain habitats after damming could lead to both decreased taxonomic diversity and decreased functional disparity of the fish assemblage.

Název v anglickém jazyce

Hydrologic connectivity affects fish assemblage structure, diversity, and ecological traits in the unregulated Gambia River, West Africa

Popis výsledku anglicky

The Gambia River of West Africa, scheduled to undergo construction of a major dam, is a large tropical river with lateral connectivity across its floodplain and a natural flow regime. We compared patterns of fish diversity, habitat use, fish assemblage structure, and the distribution of trophic position and body morphology in riverine and floodplain habitats in Niokolo Koba National Park, downstream of the planned dam. A total of 49 fish species were captured. Fish species exhibited a range of habitat use patterns including habitat generalist, specificity to particular habitats, and apparent lateral migration among habitats between seasons. Species richness was homogenous among habitats in the wet season yet increased with isolation from the main channel in the dry seasons. Our results suggest that homogenization of floodplain habitats after damming could lead to both decreased taxonomic diversity and decreased functional disparity of the fish assemblage.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EH - Ekologie – společenstva

OECD FORD obor

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Projekt

<a href="/cs/project/IAA6093404" target="_blank" >IAA6093404: Druhová diversita a ekologie vybraných skupin obratlovců západní Afriky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Biotropica

ISSN

0006-3606

e-ISSN

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Svazek periodika

44

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

521-530

Kód UT WoS článku

000305941300011

EID výsledku v databázi Scopus

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