Papers by Paulo Sergio Lisboa
Itaici Revista De Espiritualidade Inaciana, 2013
Boletim Do Laboratorio De Hidrobiologia, 2001
Limnology of three aquatic ecosystems from Baixada Maranhense: preliminary data During two years ... more Limnology of three aquatic ecosystems from Baixada Maranhense: preliminary data During two years (1997-99), the main limnological parameters of the three more representative aquatic ecosystems from Baixada Maranhense were studied (1°59'-4°00' S e 44°21'-45°33' W). Such flooded systems present extreme complexity in structure and functioning, which are constituted by: a) temporary shallow lakes whose occupy all the floodplain area in the rainy period; b) marginal lakes; c) permanent lacustrine systems. This research extended over: Viana-Cajari lakes, Pericuma River floodplains and Turiaçu River temporary lakes. The study intended to form a scientifically consistent data base on the Limnology of the environments with the objective of serving to a project of regional sustainable development, which region has undergone interventions highly hazardous to its ecology, such as the introduction of indian buffalos and exotic fishes, irrigation projects, dams and floodgates that change local hydrography. Scientific excursions were done in the periods: a) beginning of flooding, b) maximum flooding; c) decline of flooding; d) maximum drought. The following parameters were studied in five sites of each system: Secchi dish measurements, thermal, and radiation profiles, pH, total alkalinity, electrical conductivity, dissolved oxygen, nutrients, particulate material, pigments and ichthyologic fauna. The great amplitudes of pH (5.
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Papers by Paulo Sergio Lisboa