Banca de QUALIFICAÇÃO: CLETO JOSE FREIRE COSTA JUNIOR

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : CLETO JOSE FREIRE COSTA JUNIOR
DATA : 27/07/2018
HORA: 14:00
LOCAL: Sala de reuniões do DECOL-CB
TÍTULO:

Effects precipitation reduction on the benthic macroinvertebrate communities of the Brazilian semiarid region.

PALAVRAS-CHAVES:

Homogenization, eutrophication,water quality, productivity, dissimilarity, environmental gradients.

PÁGINAS: 35
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The global warming expected consequences for the Brazilian semi-arid region are increased evapotranspiration and reduced precipitation, increasing the hydric deficit and prolonging drought periods. Study aims test the hypothesis that the increase in water deficit, increases the trophic state of semi-arid reservoirs, reducing the alpha and beta diversity of benthic macroinvertebrates. To test our hypothesis, we compared the benthic macroinvertebrate communities between two sets of reservoirs located in two neighboring watersheds of the brazilian semi - arid region that contrast in their precipitation regimes. The reservoir sets were compared in one dry and one extremely dry year to evaluate effect drought intensity on the benthic communities in both basins. The results shows intensification drought increased the trophic state of reservoirs especially watershed with less annual precipitation. However, contrary to what was expected  driest basin, there was increase in the beta diversity of benthic macroinvertebrates, due greater environmental heterogeneity of  reservoirs in this region.

 

MEMBROS DA BANCA:
Interno - 1714892 - ADRIANO CALIMAN FERREIRA DA SILVA
Presidente - 1362202 - JOSE LUIZ DE ATTAYDE
Externo à Instituição - ROSEMBERG FERNANDES DE MENEZES - UFPB