|Macrobenthos monitoring at the Belgian coast in 2008, in accordance with the Water Framework Directive|
Van Hoey, G.; Pecceu, E.; Derweduwen, J.; De Backer, A.; Wittoeck, J.; Hillewaert, H.; Vandendriessche, S.; Hostens, K. (2009). Macrobenthos monitoring at the Belgian coast in 2008, in accordance with the Water Framework Directive. ILVO: Belgium. 101 pp.
|Project|| Top | Authors | Dataset |
- Macrobenthos monitoring van de Belgische Kust met betrekking tot het uitvoeren van de Kaderrichtlijn Water, more
|Authors|| || Top | Dataset |
- Van Hoey, G., more
- Pecceu, E., more
- Derweduwen, J.
- De Backer, A., more
- Wittoeck, J., more
- Hillewaert, H., more
- Vandendriessche, S., more
- Hostens, K., more
The Water Framework Directive (2000/60/EG) of the European Parliament and of theCouncil aims to achieve a good ecological and chemical quality status for all water types by2015. The quality status of a water body can be determined based on the evaluation ofbiological, chemical and hydro-morphological quality elements. The evaluation of thosequality elements is based on the integration of well defined biological quality criteria. Eachof these quality criteria supports a classification (bad, poor, moderate, good and high)aiming to measure the ‘health’ of the system compared to reference conditions.This report describes the monitoring and ecological quality status determination of thequality element benthic invertebrates for the Belgian coastal waters (<1 nautical mile). Theevaluation tool for benthos is the Benthic Ecosystem Quality Index (BEQI), which aims toprovide a signal that is capable of showing significant deviations from a defined referencestate. An important aspect within the BEQI is the use of the habitat approach, whichpresumes that there is a habitat typology within the water body. The habitat typology forthe Belgian coast includes (1) Abra alba habitat (muddy fine sand), (2) Nephtys cirrosahabitat (well sorted medium sand), (3) Macoma balthica habitat (mud).These three habitats were sampled in the western, central and eastern zones of the Belgiancoast in autumn 2007 and 2008, with an adequate sampling effort to obtain a reliableecological status evaluation. The samples were taken randomly at 9 (2007) or 11 locations(2008). They were linked to one of the three habitat types based on a combination of acluster analysis and a SIMPROF analysis to define the significant biological groups within thedata. The cluster groups were linked to the habitat types based on the benthic andsedimentological characteristics of the cluster groups. The samples assigned to one of thehabitats within each zone (western, central, eastern) of the Belgian coast were used for theecological status evaluation with the BEQI.The overall ecological status of benthos along the Belgian coast was evaluated as good, witha moderate status in some habitats and zones (the Macoma balthica habitat in the easternzone; the Abra alba habitat in the western and central zone). The ecological statusevaluation shows similar results for both years, except in the central zone. This can berelated to a better coverage of the habitats within the heterogeneous central zone duringthe monitoring campaign of 2008.
- Macrobenthos monitoring in function of the Water Framework Directive in the period 2007-2009, more