Article (Scientific journals)
Natural spatial variability of algal endosymbiont density in the coral Acropora globiceps: a small-scale approach along environmental gradients around Moorea (French Polynesia)
Ladrière, Ophélie; Penin, Lucie; Van Lierde, Elodie et al.
2013In Journal of the Marine Biological Association of the United Kingdom
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Keywords :
Symbiodinium density; multi-scale variability; scleractinian corals; symbiosis; environmental gradients
Abstract :
[en] This study provides a baseline describing natural small scale variability of Symbiodinium density in the sentinel coral Acropora globiceps during the summer, under non-bleaching conditions. Spatial scales investigated range from the colony scale (1–10 cm, i.e. among branches of the same colony) to the reef scale (1–10 km, i.e. among stations distributed over several locations and depths), at Moorea Island, French Polynesia. The coral–Symbiodinium symbiosis is a key process in scleractinian coral physiology, and Symbiodinium density provides an easy-to-measure and inexpensive biomarker of this symbiosis health. Spatial variability of three major environmental factors: light intensity, sedimentation and water motion was also assessed to evaluate their potential link with Symbiodinium density. Density of Symbiodinium did not significantly differ within colonies or among colonies within a station. However, a marked depth gradient was observed, showing increasing density with increasing depth and decreasing light intensity. These observations provide an interesting reference for forthcoming comparisons with disturbed conditions, such as bleaching events.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Ladrière, Ophélie ;  Université de Liège - ULiège > R&D : Direction
Penin, Lucie;  Université de La Réunion > Laboratoire d'Écologie Marine, FRE CNRS UR 3560 ECOMAR, and Laboratoire d'Excellence ‘CORAIL’
Van Lierde, Elodie;  Université de Liège - ULiège > Unit of Marine Ecology, Laboratory of Animal Ecology and Ecotoxicology
Vidal-Dupiol, Jérémie;  Université de Perpignan > CNRS, Ecologie et Evolution des Interactions, UMR 5244 CNRS–UPVD
Kayal, Mohsen;  Université de Perpignan > USR 3278 CNRS EPHE, Centre de Recherches Insulaires et Observatoire de l'Environnement and Laboratoire d'Excellence ‘CORAIL’,
Roberty, Stéphane  ;  Université de Liège - ULiège > Labo de Bioénergétique
Poulicek, Mathieu ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie animale et écotoxicologie
Adjeroud, Mehdi;  IRD- Institut de Recherche pour le Développement > U227 CoRéUs 2 ‘Biocomplexité des récifs coralliens de l'Indo-Pacifique’ and Laboratoire d'Excellence ‘CORAIL’
Language :
English
Title :
Natural spatial variability of algal endosymbiont density in the coral Acropora globiceps: a small-scale approach along environmental gradients around Moorea (French Polynesia)
Publication date :
18 September 2013
Journal title :
Journal of the Marine Biological Association of the United Kingdom
ISSN :
0025-3154
eISSN :
1469-7769
Publisher :
Cambridge University Press, New York, United States - New York
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 05 November 2013

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