STARDUST II - Spatial and Temporal Assessment of high Resolution Depth profiles Using novel Sampling Technologies
The fate of pollutants in fluvial and marine sediments in cross-border zones
Introduction Objectives News Downloads Data System Pictures Partners

Data System

People |  Institutes |  Publications |  Datasets |  Data (login)

[ meld een fout in dit record ]mandje (0): toevoegen | toon Print deze pagina
Long-term mesocosms study of the effects of ocean acidification on growth and physiology of the sea urchin Echinometra mathaei
Moulin, L.; Grosjean, P.; Leblud, J.; Batigny, A.; Collard, M.; Dubois, P. (2015). Long-term mesocosms study of the effects of ocean acidification on growth and physiology of the sea urchin Echinometra mathaei. Mar. Environ. Res. 103: 103-114. dx.doi.org/10.1016/j.marenvres.2014.11.009
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Echinometra mathaei (Blainville, 1825) [WoRMS]
    Marien/Kust
Author keywords
    Ocean acidification; Sea urchins; Echinometra mathaei; Mesocosms;Acid-base regulation; Metabolism; Growth; Long-term; Coral reefs
Auteurs  Top 
  • Moulin, L.
  • Grosjean, P.
  • Leblud, J.
  • Batigny, A.
  • Collard, M.
  • Dubois, P.
Abstract
    Recent research on the impact of ocean acidification (OA) has highlighted that it is important to conduct long-term experiments including ecosystem interactions in order to better predict the possible effects of elevated pCO2. The goal of the present study was to assess the long-term impact of OA on a suite of physiological parameters of the sea urchin Echinometra mathaei in more realistic food conditions. A long-term experiment was conducted in mesocosms provided with an artificial reef in which the urchins principally fed on algae attached to the reef calcareous substrate. Contrasted pH conditions (pH 7.7 vs control) were established gradually over six months and then maintained for seven more months. Acid–base parameters of the coelomic fluid, growth and respiration rate were monitored throughout the experiment. Results indicate that E. mathaei should be able to regulate its extracellular pH at long-term, through bicarbonate compensation. We suggest that, within sea urchins species, the ability to accumulate bicarbonates is related to their phylogeny but also on the quantity and quality of available food. Growth, respiration rate and mechanical properties of the test were not affected. This ability to resist OA levels expected for 2100 at long-term could determine the future of coral reefs, particularly reefs where E. mathaei is the major bioeroder.
Alle informatie in het Integrated Marine Information System (IMIS) valt onder het VLIZ Privacy beleid Top | Auteurs 
STARDUST II is a project funded by the INTERREG III A programme (France/Walloon Region/Flanders French-Flemish subprogramme) of the European Community's Regional Development Fund.
Hosted by the Flanders Marine Institute (VLIZ)