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Ecologische monitoring natuurinrichtingsproject Lombardsijde: t0 situatie – fase 4: eindrapport 25/10/2008

Sarah Vanden Eede (UGent) , Magda Vincx (UGent) and Steven Degraer (UGent)
(2008)
Author
Organization
Abstract
The scientific evaluation of ecological effects of an anthropogenic influence can only be done by comparing the status of the environment before (t0 situation) and after the influence has taken place (Elzinga et al., 2001). The ecological monitoring project concerning the t0 situation of the Lombardsijde beach is currently in the fourth phase (phase 4). In phase 1, some sites in Oostend-Center and Middelkerke were monitored (Speybroeck et al., 2003). Phase 2 was coordinated by the Laboratories E. Van Vooren, TNO-MEP (for soft substrates) and AquaSense (for hard substrates). They monitored Oostend-Center, Oostend-East, the compensation site Nieuwpoort-Lombardsijde (where the beach nourishment will take place) and the new shipping channel in Oostend (created by dredging activities) (Welvaert, 2005). As control sites Middelkerke, Wenduine and Koksijde-Oostduinkerke were chosen for Oostende-Center, Oostende-Easter and Nieuwpoort-Lombardsijde. In phases 3 and 4, hard substrates were no longer monitored as the structures disappeared almost completely under the sand during previous beach nourishments. Ecological monitoring is done following the principles of “Before After Control Impact”. The control sites are indispensable in order to differentiate between effects caused by the anthropogenic influence and natural variations. Control sites are chosen as sites with comparable species composition and fysico-chemical characteristics as the impact sites and are located far from the investigated anthropogenic influence. The impact site of phase 4 is Lombardsijde and its control site is Nieuwpoort-Bad. In the autumn of 2008, a beach nourishment will take place on the beach of Lombardsijde. Any monitoring afterwards will lead to the investigation of impact situations (t1 situation). The ecological effects of beach nourishment in Lombardsijde are expected mostly on the benthos. Macrobenthos is a key element in the marine ecosystem and has a tight relationship with the fysico-chemical environment. As such, it’s the ideal ecosystem component for the evaluation of the ecological effects caused by anthropogenic influences on the marine environment. On the short term, a negative influence is to be expected while on the long term a gradual natural recovery will take place. The physical (and chemical) characteristics of the new substrate (brought in by the beach nourishment) like beach slope, sediment type and amount of organic material, will determine the velocity of the recovery. Eventually, a positive influence can be expected if the newly created environment allows for a richer benthos ecosystem (e.g. a weaker beach slope). The natural recovery on the short and long term can only be evaluated through a thorough comparison of the initial benthos (t0 situation) with the benthos after recovery. A sound knowledge of the t0 situation is absolutely indispensable as a starting point of scientifically efficient monitoring.
Keywords
zandsuppletie, ecologische monitoring, Noordzee, macrobenthos

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Citation

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Chicago
Vanden Eede, Sarah, Magda Vincx, and Steven Degraer. 2008. “Ecologische Monitoring Natuurinrichtingsproject Lombardsijde: T0 Situatie – Fase 4: Eindrapport 25/10/2008”. Gent: Universiteit Gent. Vakgroep Biologie. Sectie Mariene Biologie.
APA
Vanden Eede, S., Vincx, M., & Degraer, S. (2008). Ecologische monitoring natuurinrichtingsproject Lombardsijde: t0 situatie – fase 4: eindrapport 25/10/2008. Gent: Universiteit Gent. Vakgroep Biologie. Sectie Mariene Biologie.
Vancouver
1.
Vanden Eede S, Vincx M, Degraer S. Ecologische monitoring natuurinrichtingsproject Lombardsijde: t0 situatie – fase 4: eindrapport 25/10/2008. Gent: Universiteit Gent. Vakgroep Biologie. Sectie Mariene Biologie; 2008.
MLA
Vanden Eede, Sarah, Magda Vincx, and Steven Degraer. “Ecologische Monitoring Natuurinrichtingsproject Lombardsijde: T0 Situatie – Fase 4: Eindrapport 25/10/2008.” 2008 : n. pag. Print.
@misc{1123026,
  abstract     = {The scientific evaluation of ecological effects of an anthropogenic influence can only be done by comparing the status of the environment before (t0 situation) and after the influence has taken place (Elzinga et al., 2001).
The ecological monitoring project concerning the t0 situation of the Lombardsijde beach is currently in the fourth phase (phase 4). In phase 1, some sites in Oostend-Center and Middelkerke were monitored (Speybroeck et al., 2003). Phase 2 was coordinated by the Laboratories E. Van Vooren, TNO-MEP (for soft substrates) and AquaSense (for hard substrates). They monitored Oostend-Center, Oostend-East, the compensation site Nieuwpoort-Lombardsijde (where the beach nourishment will take place) and the new shipping channel in Oostend (created by dredging activities) (Welvaert, 2005). As control sites Middelkerke, Wenduine and Koksijde-Oostduinkerke were chosen for Oostende-Center, Oostende-Easter and Nieuwpoort-Lombardsijde. In phases 3 and 4, hard substrates were no longer monitored as the structures disappeared almost completely under the sand during previous beach nourishments.
Ecological monitoring is done following the principles of {\textquotedblleft}Before After Control Impact{\textquotedblright}. The control sites are indispensable in order to differentiate between effects caused by the anthropogenic influence and natural variations. Control sites are chosen as sites with comparable   species composition and fysico-chemical characteristics as the impact sites and are located far from the investigated anthropogenic influence. The impact site of phase 4 is Lombardsijde and its control site is Nieuwpoort-Bad. In the autumn of 2008, a beach nourishment will take place on the beach of Lombardsijde. Any monitoring afterwards will lead to the investigation of impact situations (t1 situation).
The ecological effects of beach nourishment in Lombardsijde are expected mostly on the benthos. Macrobenthos is a key element in the marine ecosystem and has a tight relationship with the fysico-chemical environment. As such, it{\textquoteright}s the ideal ecosystem component for the evaluation of the ecological effects caused by anthropogenic influences on the marine environment. On the short term, a negative influence is to be expected while on the long term a gradual natural recovery will take place. The physical (and chemical) characteristics of the new substrate (brought in by the beach nourishment) like beach slope, sediment type and amount of organic material, will determine the velocity of the recovery. Eventually, a positive influence can be expected if the newly created environment allows for a richer benthos ecosystem (e.g. a weaker beach slope). The natural recovery on the short and long term can only be evaluated through a thorough comparison of the initial benthos (t0 situation) with the benthos after recovery. A sound knowledge of the t0 situation is absolutely indispensable as a starting point of scientifically efficient monitoring.},
  author       = {Vanden Eede, Sarah and Vincx, Magda and Degraer, Steven},
  keyword      = {zandsuppletie,ecologische monitoring,Noordzee,macrobenthos},
  language     = {dut},
  pages        = {49},
  publisher    = {Universiteit Gent. Vakgroep Biologie. Sectie Mariene Biologie},
  title        = {Ecologische monitoring natuurinrichtingsproject Lombardsijde: t0 situatie -- fase 4: eindrapport 25/10/2008},
  year         = {2008},
}