Contribuição local da diversidade beta taxonômica e funcional do fitoplâncton em um reservatório neotropical e suas relações com a heterogeneidade ambiental

Abstract

Aquatic environments are among the most diverse environments on planet Earth, in addition, these environments suffer from intense anthropogenic pressures, which end up interfering with communities and the functioning of the environment. To partition beta diversity, several methods have been developed, such as LCBD (Local Contribution to Beta Diversity), which allows calculating the contribution of different locations to beta diversity, and thus indicating important places for conservation and preservation. Therefore, we used phytoplankton data from a tropical reservoir and analyzed taxonomic and functional beta diversity considering periods of rain and drought. It was possible to verify that environmentally differentiated locations contributed more to the LCBD throughout the reservoir, and that the taxonomic and functional LCBD was little related to the environmental heterogeneity of the reservoir. Although environmental heterogeneity was little related to taxonomic and functional beta diversity, environmental factors contributed to the structuring of the phytoplankton community, since the site that obtained the highest LCBD values in much of the study, was environmentally more unique than the others.