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Utilization of a Submersible Ultra-Violet Fluorometer for Monitoring Anthropogenic Inputs in the Mediterranean Coasts

Authors: Tedetti, Marc; Guigue, Catherine; Goutx, Madeleine;

Utilization of a Submersible Ultra-Violet Fluorometer for Monitoring Anthropogenic Inputs in the Mediterranean Coasts

Abstract

International audience; The Mediterranean Sea Coast is subject to strong anthropogenic pressure because of an intensification of urban, industrial, agricultural and tourist catchment (UNEP, 2000). This anthropogenic pressure is reflected in the direct (from coastal sources) and indirect (via rivers) discharge of terrigenous materials and pollutants (Tolosa et al., 1996; UNEP, 1996). These contributions promote transformations of ecosystems and associated biogeochemical cycles. In order to assess environmental changes, discrete measurements at fixed observation site (i.e. SO-COM, SOMLIT station) are useful but remain insufficient to describe the synoptic extension and the impact of these released terrigenous inputs. An objective of the laboratory is to develop and use in situ UV fluorimeters for quantification at high spatial and temporal frequency of terrigenous and anthropgenic tracers such as polycyclic aromatic hydrocarbons (PAHs, index of chemical contaminations) and "tryptophan-like" material (index of bacterial contaminations). An in situ UV fluorometer (EnviroFlu-HC, TriOS optical sensor) was deployed in the coastal area of Marseille-Sud since January 2008. The fluorescence signal of this probe (Ex/Em: 254±25 / 360±50 nm) was compared to the spectrofluorimetric Excitation Emission Matrices (EEMs) of discrete samples taken from the same area. The probe signal, due to its relative "large" Excitation and Emission bands, covers the EEMs signature of several groups of compounds: PAHs, tryptophan-like material, humic substances. This study is part of a laboratory program that aims at developping observation tools for operational oceanography and urban marine zone management: The project SEA EXPLORER (leader ACSA-Meyreuil, partnerships: ACRI, ISITIV, IFREMER, LMGEM-COM, LOV) funded by the Ministery of Industry (Fond de Compétitivité des Entreprises, FCE). Other partners: Agence de l'Eau Rhône-Méditerranée (IBISCUS project).

Country
France
Subjects by Vocabulary

Microsoft Academic Graph classification: Mediterranean climate Hydrology Pollutant Biogeochemical cycle Terrigenous sediment Anthropogenic pressure Ultra violet Oceanography Mediterranean sea Environmental science Ecosystem

Keywords

[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere, [SDE.MCG]Environmental Sciences/Global Changes, [SDE.ES]Environmental Sciences/Environmental and Society, [SDE.MCG] Environmental Sciences/Global Changes, [SDE.ES] Environmental Sciences/Environmental and Society, [SDE.ES]Environmental Sciences/Environment and Society

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  • citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    1
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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Found an issue? Give us feedback
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Average
Average
Related to Research communities
Neuroinformatics
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