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<title lang=en>Effects of depth and ultraviolet radiation on coral reef turf algae</title>
<creator>Fricke, Anna</creator>
<creator>Teichberg, Mirta</creator>
<creator>Nugues, Maggy M.</creator>
<creator>Beilfuss, Svenja</creator>
<creator>Bischof, Kai</creator>
<contributor>Leibniz Centre for Tropical Marine Research (ZMT)</contributor>
<contributor>Ecosystèmes Côtiers Marins et Réponses aux Stress (ECOMERS) ; Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA)</contributor>
<contributor>Department of Marine Botany ; University of Bremen</contributor>
<contributor>Caribbean Research and Management of Biodiversity Foundation (CARMABI)</contributor>
<contributor>Centre de recherches insulaires et observatoire de l'environnement (CRIOBE) ; Université de Perpignan Via Domitia (UPVD) - École pratique des hautes études (EPHE) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Laboratoire d'Excellence CORAIL (LabEX CORAIL) ; Institut de Recherche pour le Développement (IRD) - Université des Antilles et de la Guyane (UAG) - École des hautes études en sciences sociales (EHESS) - École pratique des hautes études (EPHE) - Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) - Université de la Réunion (UR) - Université de la Polynésie Française (UPF) - Université de Nouvelle Calédonie - Institut d'écologie et environnement</contributor>
<description>International audience</description>
<source>ISSN: 0022-0981</source>
<source>Journal of Experimental Marine Biology and Ecology</source>
<publisher>Elsevier</publisher>
<identifier>hal-01333486</identifier>
<identifier>https://hal-univ-perp.archives-ouvertes.fr/hal-01333486</identifier>
<source>https://hal-univ-perp.archives-ouvertes.fr/hal-01333486</source>
<source>Journal of Experimental Marine Biology and Ecology, Elsevier, 2014, 461, pp.Pages 73-84. 〈10.1016/j.jembe.2014.07.017〉</source>
<identifier>DOI : 10.1016/j.jembe.2014.07.017</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jembe.2014.07.017</relation>
<language>en</language>
<subject lang=en>Curaçao</subject>
<subject lang=en>Coral reef</subject>
<subject lang=en>Macroalgae</subject>
<subject lang=en>Cyanobacteria</subject>
<subject lang=en>Transplantation</subject>
<subject lang=en>UV radiation</subject>
<subject>[SDV.EE] Life Sciences [q-bio]/Ecology, environment</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Despite the increasing dominance of turf algae in coral reefs, few studies have investigated their physiological and ecological responses to changes in abiotic factors. We tested the effects of depth and ultraviolet radiation on turf algae at different levels of successional stages using two experiments. Depth-related differences were found for all turf algal communities, characterized by a higher amount of the cyanobacteria taxon Dichothrix and the red filamentous genera Poly-/Herposiphonia in the shallow and the appearance of oscillating cyanobacteria in deeper waters. In the first experiment, cross-depth transplantation of 153 days old communities influenced percentage cover, biomass and taxa composition. Downward transplantation lowered overall biomass and abundance of the foraminifera Sorites, whereas the crustose green alga Pringsheimiella and filamentous cyanobacteria colonized the communities. A nearly reverse pattern was observed in upward transplanted communities. Overall we distinguished between sensitive taxa, like Oscillatoria, and taxa able to acclimate to alterations in their environment, like Pringsheimiella, Poly/Herposiphonia and Dichothrix. In the second experiment, algae grown for 285 days at 5 m were exposed together with a set of sterile settlement tiles to three UVR regimes at 2 m for 22 days. UVR had no effect on turf algal communities regardless of successional stage. This study highlights the presence of high light and UV tolerant species. The high UV tolerance of turf communities may confer a competitive advantage over other more sensitive coral reef biota, such as corals. This study demonstrates that turf algae are dynamic communities exhibiting species-specific resistance to environmental changes.</description>
<date>2014-12</date>
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