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Intertidal nematode communities in the Mekong estuaries of Vietnam and their potential for biomonitoring
Quang, N.X.; Chau, N.N.; Smol, N.; Prozorova, L.; Vanreusel, A. (2016). Intertidal nematode communities in the Mekong estuaries of Vietnam and their potential for biomonitoring. Environ. Monit. Assess. 188(2): 91. http://dx.doi.org/10.1007/s10661-016-5091-z
In: Environmental Monitoring and Assessment. Kluwer: Dordrecht. ISSN 0167-6369; e-ISSN 1573-2959
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| Trefwoorden |
Desmodora de Man, 1889 [WoRMS]; Parodontophora Timm, 1963 [WoRMS]
Marien/Kust |
| Author keywords |
Nematode communities; Paradontophora; Environment; Mekong estuary; Biomonitoring |
| Auteurs | | Top |
- Quang, N.X.
- Chau, N.N.
- Smol, N.
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- Prozorova, L.
- Vanreusel, A.
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| Abstract |
Nematode communities in eight Mekong estuaries were investigated during the dry season. The aim of the study was to identify the structure and the diversity of the communities in relation to the main environmental characteristics. In each estuary, three to four intertidal sampling stations were identified at regular distances from the mouth to up to 45 km land inward. The nematode communities showed a strong correlation with sediment composition and to a lesser degree with chlorophyll a concentrations. Multivariate analysis resulted in the identification of four types of communities. We identified two types of Desmodora communities in the sandy mouth stations and two types of Parodontophora communities in the silty sand stations. One of the silt associated communities showed a preference for higher chlorophyll a concentrations, resulting in higher densities and higher diversity, mainly of monhysterid species. Because of the strong association between community structure and sediment composition, nematodes are a meaningful tool for monitoring changes in their environment. In case their community deviates from what is expected based on sediment, it may serve as an early warning for disturbance. |
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