Relations entre l'équilibre sédimentaire des plages, la structure des communautés et le budget des carbonates dans l'écosystème corallien de la Réunion
Year: 2002
Type: article
Abstract: Benthic community structure, metabolism and beach profiles are being investigated on a reefal ecosystemi n order to assessth e impact of damagedr eef flats on morphological evolution of associateds andy beaches.I n the northernp art of Hermitagep ass,t he control site displays a community excessp roductionc lose to 0 or higher than 0, and a high daily net calcification typical of a reef flat characterizedb y flourishing coral communities. On the contrary, in the southern part of the pass, the reef flat has mainly been damaged by polluted groundwaterd ischarge,a nd is characterizedb y high coral mortality and abundanceo f macroalgae. Daily net calcification is clearly lower at this site, and community excess production value, showing deficit all yeiu, presumably results from an input of exogenous organic matter. On each side of the pass, sedimentary dynamic of the beaches provides two different trends : sand bringing in the north (control site) and sand removing in the south. On a narrow and exposed reef, these results suggest the existence of a direct relation between reef flats state of health and coast sedimentary evolution.
Source: HAL
Institution: Laboratoire de Sciences de la Terre
Language: French
Subfield: Ecology
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2467208334