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Nematode communities of Lake Tana and other inland water bodies of Ethiopia
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117
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| Trefwoorden |
Nematoda [WoRMS]
Zoet water |
| Author keywords |
freshwater nematodes; nematode ecology; community ecology; Ethiopia; tropical lakes; rivers |
| Auteurs | | Top |
- Abebe, E.
- Mees, J.
- Coomans, A.
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| Abstract |
Free-living nematodes from littoral benthie sediments of four lakes, two rivers and a hot spring in Ethiopia are studied. Populations of nematodes encountered are identified to the species level. The general nematode (generic and species) composition of the lakes, rivers and hot spring are appraised by giving special emphasis to the nematodes from L. Tana, i.e. three sites where different environmental factors come into play were considered. Gelda is a site close to a river inlet (River Gelda), Gedero is a site exposed to strong wind action while Zegie is a secluded site protected by a land mass from any strong wind action. Nematode communities were identified using classification and ordination techniques. The identified communities are then characterised with respect to species composition, biomass, density, diversity, size structure, feeding type and maturity index. Also, the vertical distribution of nematodes is examined at the community and species level. An attempt has been made to associate these variations with the considered environmental factors viz. site, water depth, sediment depth, median grain size and percentage of mud in the sediment. |
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