Rising atmospheric carbon dioxide (CO2) concentration is causing global warming and ocean acidification (OA), which increasingly are recognized as important drivers of change in biological systems. OA has the potential to alter in many ways the organic carbon biogeochemistry in the ocean, leading to changes in quality of organic matter available for the marine organisms. So far, we know very little about how the sediments, the organisms that live in it and the processes that occur will react to changes in the acidity of seawater. On the Brazilian coast, in particular, the study on the effects of climate change on benthic processes is still incipient. This proposal is an experimental study that combines labeling techniques with stable isotope (carbon and nitrogen) and molecular techniques in order to follow the incorporation of organic carbon and its fate in the benthic community of the marine sediment after the arrival of fresh food, in current conditions and low pH. To this end, we intend to test the following hypotheses: 1) organic material from the microphytobenthos is the main carbon source for benthic communities of coastal areas and 2) OA alters the incorporation of organic carbon in benthic communities (bacteria, half-and macrofauna). The results generated will be extremely useful for understanding how climate change will affect the marine benthic ecosystem. (AU)
News published in Agência FAPESP Newsletter about the scholarship:
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
HARVEY, BEN P.;
GSOTTBAUER, CARINA M.;
HALL, EMILIE F.;
MANCUSO, FRANCESCO P.;
PEREIRA, CAMILA O.;
SCHRAM, JULIE B.;
STAPP, LAURA S.;
ROSA, LINDZAI T. SANTA.
Evolution of Marine Organisms under Climate Change at Different Levels of Biological Organisation.
Web of Science Citations: 20.
(References retrieved automatically from State of São Paulo Research Institutions)