Abstract


STUDYING MULTI-STRESSORS EFFECTS IN CORAL REEF ORGANISMS: PERSPECTIVES RELATED TO THE USE OF RADIOTRACER TECHNIQUES

Marine environmental stressors affecting coral reef ecosystems are numerous: from local contaminants (e.g. land-based pollutants) to global stressors (e.g. increase of temperature, ocean acidification). Some are already well known to impact reef organisms whereas others are about to represent a major concern. Although there are many complex biogeochemical interactions and still a large amount of uncertainties of their combined effects, there is an increasing need to investigate the effects of multiple stressors on coral reefs, one of the richest and most diverse ecosystems. An experimental approach (controlled conditions) presents a series of advantages for such investigation since it allows to gradually understand the effects of stressors on marine organism, one by one and combined. This approach, associated with the use of radiotracers appears to be a unique tool to understand the fate of contaminants and furthermore to clue some physiological reactions to counteract stressors (e.g. delineation of contamination pathways, identification of potential bioindicator reef species or illustration of key detoxification compartment in tropical organisms). Current methodological developments are made to allow studying multi-stressors effects on coral reef organisms at different organizational levels (from the cells to the individuals). This talk presents the perspectives of assessing the effects of multiples stressors on reef organisms by using radiotracers, especially in the context of the future changing environment and will be illustrated through a series of experiments.

Authors

Metian , M., IAEA - Environment Laboratories, Monaco, m.metian@iaea.org

Pouil, S., IAEA - Environment Laboratories, Monaco, simon.pouil1@gmail.com

Jacob, H., IAEA - Environment Laboratories, Monaco, hjacob2012@my.fit.edu

Oberhänsli , F., IAEA - Environment Laboratories, Monaco, F.R.Oberhaensli@iaea.org

Teyssié , J. L., IAEA - Environment Laboratories, Monaco, J.Teyssie@iaea.org

Lecchini, D., Centre de Recherches Insulaires et Observatoire de l’Environnement (CRIOBE; Moorea), French Polynesia, lecchini@univ-perp.fr

Details

Oral presentation

Session #:36
Date: 06/23/2016
Time: 15:15
Location: 306 A/B

Presentation is given by student: No