ORBi: Pete Dorothée - Importance of the microbenthic loop of Posidonia oceanica meadows to detect anthropogenic perturbations early: first results

Reference : Importance of the microbenthic loop of Posidonia oceanica meadows to detect anthropogeni...


	Document type :	Scientific congresses and symposiums : Unpublished conference
	Discipline(s) :	Life sciences : Environmental sciences & ecology Life sciences : Aquatic sciences & oceanology
	To cite this reference:	http://hdl.handle.net/2268/8950

Title :	Importance of the microbenthic loop of Posidonia oceanica meadows to detect anthropogenic perturbations early: first results
Language :	English
Author, co-author :	Pete, Dorothée [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
	Velimirov, Branko [Medizinische Universität Wien > General Microbiology]
	Bouquegneau, Jean-Marie [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
	Gobert, Sylvie [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Publication date :	Aug-2008
Page number :	1
On invitation :	No
Audience :	International
Event name :	8th International Seagrass Biology Workshop
Event date :	du 31 août au 6 septembre 2008
Event place (city) :	Bamfield
Event country :	Canada
Keywords :	[en] microbenthic loop ; seagrass ; anthropogenic impact
Abstract :	[en] It was demonstrated that Posidonia oceanica, the marine magnoliophyte endemic to the Mediterranean Sea, is a valuable tool to assess environmental qualities of the coastal zones. However, only few studies have attempted to use characteristics of its sediment compartment as an indicator of the environment state of health. Yet, organisms living in this compartment have a turnover which is faster than for canopy-organisms which makes them useful as valid early descriptors of pollution. The study described here takes place in a project which aims to find an early holistic indicator of anthropogenic perturbations in the Mediterranean coastal zones. The investigation is based on the microbenthic loop (organic matter, bacteria, microphytobenthos and meiofauna) and was led in two different sites of Calvi Bay (Corsica, France), at 10 m depth, in March and June 2007. Only results about bacteria (abundance, biomass, morphotypes), microphytobenthos (biomass) and organic matter (biomass) will be presented. For both seasons, significant differences between sites are found, irrespective on whether variables are treated separately or together, thus indicating that the microbenthic loop has potential to be a good early indicator of pollution.
Funders :	Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Name of the research project :	Utilisation de l'exergie pour mesurer et détecter les effets des perturbations affectant les herbiers à Posidonia oceanica (L.) Delile: caractérisation au sein du compartiment sédimentaire.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/8950

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