Spatial and temporal dynamics from the fish community in the marginal lakes at the Northern Pantanal
DOI:
https://doi.org/10.6008/CBPC2179-6858.2019.001.0019Keywords:
Hydrological Seasons, Ichthyofauna, Hydrological MorphometryAbstract
This study investigates the impact of the hydrological cycle on the ichthyological community structure in six marginal lakes on the Paraguay river during the high, ebb, low and raising waters in the Northern Pantanal. The samples were performed with nets of different sizes between 2014 to 2015. To analyse the data, we used the alfa and beta diversity indexes. In total, 7,318 individuals were sampled, and the highest richness, abundance and consequently diversity was observed during the low waters. Contrasting the high availability of shelter and food in heterogenous places, normally represented by bigger environments, or during the high waters in the Pantanal, the highest beta diversity was found in the marginal lakes of lower sizes (length, width and area). Although the high waters in the Pantanal is considered that with most availability of resources, we highlight that the marginal lakes, even the small ones, may host a high diversity of species in periods of low waters as well. The high homogeneity of species shows that they are not dependent on the space and seasons to be in the environment, which may be an effect of the connectivity to the main channel of the Paraguay river throughout the entire year.
Downloads
Downloads
Published
Issue
Section
License
The CBPC - Companhia Brasileira de Produção Científica (Brazil CNPJ: 11.221.422/0001-03) the material rights of the published works. The rights relate to the publication of the work anywhere in the world, including rights to renewals, expansions and dissemination of the contribution, as well as other subsidiary rights. All electronically published works may subsequently be published in printed collections under the coordination of this company and / or its partners. The authors preserve the copyright, but are not allowed to publish the contribution in another medium, printed or digital, in Portuguese or in translation.