| Texto completo | |
| Autor(es): |
Cordeiro, Cesar A. M. M.
;
Pardal, Andre
;
Gimenez, Luis
;
Ciotti, Aurea M.
;
Jenkins, Stuart R.
;
Burrows, Michael T.
;
Williams, Gray A.
;
Christofoletti, Ronaldo A.
Número total de Autores: 8
|
| Tipo de documento: | Artigo Científico |
| Fonte: | MARINE ENVIRONMENTAL RESEARCH; v. 200, p. 13-pg., 2024-08-16. |
| Resumo | |
Rocky shore communities are shaped by complex interactions among environmental drivers and a range of biological processes. Here, we investigated the importance of abiotic and biotic drivers on the population structure of key rocky intertidal species at 62 sites, spanning 50% of the Brazilian rocky shoreline (i.e., 500 km). Large-scale population patterns were generally explained by differences in ocean temperature and wave exposure. For the gastropod species Lottia subrugosa, differences at smaller scales (i.e., 0.1-1 km) were better explained by other abiotic influences such as freshwater discharge and substrate roughness. Based on the general population patterns of intertidal species identified, three main oceanographic groups were observed: a coldoligotrophic grouping at northern sites (Lakes sub-region), a eutrophic group associated with large estuaries and urban zones (Santos and Guanabara bays); and a transitional warm-water group found between the two more productive areas. Larger individuals of Stramonita brasiliensis, L. subrugosa and Echinolittorina lineolata were generally found in the cold-oligotrophic system (i.e., upwelling region), while small suspension feeders dominate the warm-eutrophic systems. Evidence of bottom-up regulation was not observed, and top-down regulation effects were only observed between the whelk S. brasiliensis and its mussel prey Perna perna. Environmental drivers as compared to biotic interactions, therefore, play a key role determining the population structure of multiple intertidal species, across a range of spatial scales along the SW Atlantic shores. (AU) | |
| Processo FAPESP: | 15/26859-3 - Integração de processos ecológicos em diferentes escalas espaciais: o exemplo de um sistema presa-predador do entremarés |
| Beneficiário: | Andre Luiz Pardal Souza |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 16/24551-4 - Força de interações ecológicas e a mediação ambiental em sistemas costeiros |
| Beneficiário: | Ronaldo Adriano Christofoletti |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |