UFJF - Universidade Federal de Juiz de Fora

Management and Conservation of Aquatic Biodiversity: Biological and Energetic Controls of Cylindrospermopsis

Data: 10 de November de 2016

   The genus Cylindrospermopsis is typical of tropical regions and presents ecophysiological highly potencial characteristics for its dominance in eutrophic aquatic systems: ability to regulate fluctuation; low light requirement; ability to fix atmospheric nitrogen; high affinity and large capacity of phosphorus stock; resistance to predation.

   However, it is still unclear which factors are mainly responsible for the increasing occurrence and/or dominance of Cylindrospermopsis in most of Brazilian reservoirs. Knowledge of the dynamics of the phytoplankton community can be an efficient indicator of natural or anthropic changes and the primary production rate stands out as an important functional descriptor of the planktonic communities.

   Efficiency calculations estimated from the weighting between productivity and respiratory expenditure, biomass and available resources, provide a robust understanding of energy flows. Such understanding enables the development of descriptive and functional predictive models.

   The present work aims to evaluate the functional response of populations of C. raciborskii through the seasonal variation in the potential of their productivity rates, as well as to provide subsidies for the development of a model to mesure water quality.


Members:

Fábio Roland | Coordinator

Simone Jaqueline Cardoso


Funders:

Conselho Nacional de Desenvolvimento Científico e Tecnológico – Financial Support.