CLASSIFICATION OF WATER BODIES BASED ON BIOTIC AND ABIOTIC PARAMETERS AT THE VÁRZEAS OF MAMIRAUÁ RESERVE, CENTRAL AMAZON.

Helder Lima de Queiroz

Abstract


In order to describe and better understand the aquatic environment of the várzea lakes at Mamirauá Reserve throughout the Amazonian hydrologic cycle, a sample of 11 of those lakes were chosen mainly for their accessibility and diversity. They were visited every season, for 2 consecutive years and morphological, limnological and biodiversity data was recorded. The aquatic macrophytes and the invertebrates (specially molluscs, crustaceans, arachnids, and the insect orders) found in its root zone were the taxonomic groups aimed. All information was used to group and ordinate the samples, to generate broad categories of lakes for Mamirauá Reserve. All sampled lakes proved to present high similarity with others, with the exception of one, more similar with the closest main river. However, two distinct groups were identified, mainly due to differences in conductivity of the water, its temperature and the presence or relative abundance of particular groups of invertebrates. These groups were consistent with the morphology of the lakes, the types of banks and levees, the type of riparian forest and the geomorphologic origin of the lake. This conclusion is useful for the evaluation of significance levels of aquatic environment at protected zones for the management of the reserve, and for the design of further ecologic research on the aquatic environment at the area.

Keywords


Lagos de várzea; Limnologia amazônica; Classificação ambiental; Ecologia aquática; Mamirauá; Várzea lakes; Amazonian limnology; Environment classification; Aquatic ecology; Mamirauá



DOI: https://doi.org/10.31420/uakari.v3i2.28