Navegando por Assunto "Threats"

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Anthropogenic threats to the sea turtle populations along the brazilian coast
(2011-05) Baptistotte, C.; Lopez, G.; Reith, Denise; Santos, M. R. D.; Boldrin, M. A.; Werneck, M. R.; Becker, H.; Goldberg, D. W.; Stahelin, G. D.; Marcovaldi, M. A.; Píres, T.
Post mortem examination is an important tool in sea turtle diseases investigation and its relation to anthropogenic stressors. In order to identify the possible causes of sea turtles strandings, Projeto TAMAR-ICMBio conducts necropsies at its research stations along the brazilian coast. Moreover, TAMAR has developed research agreements through veterinary universities research programs to allow more accurate diagnostics. In this study, we analyze results from 989 necropsies performed at TAMAR Stations in Bahia, Espírito Santo, São Paulo and Santa Catarina States (Figure 1), from January 2009 to May 2011.
Artigo
Projeto Tamar: matching, threats and conservation priorities for sea turtles in Brazil
(2013) MARCOVALDI, M. A.; THOMÉ, J. C.; SILVA, A. C. C. D. da; SALES, G.; GIFFONI, B.; GOMES, B. M.; BAPTISTOTTE, C.; LIMA, E.; WANDERLINDE, J.; SANTOS, A. J. B.; SANTOS, A. S. dos; MENDILAHARSU, M. L.; LOPÉZ, G. G.
Artigo
Under the surface: what we know about the threats to subterranean fishes in Brazil
(2021-03) Bichuette, Maria Elina; Eduardo Gallão, Jonas
The present work brings information on threats to the subterranean fishes in Brazil. Currently, at least 36 species are known, 22 of which are already formally described. Endemism is the rule for most of them. Regarding their conservation, these fishes are in general considered threatened: and most of the already formally described species are included in national lists of threatened fauna, and only four of them are included in the global list of the IUCN. Regarding habitats, Brazilian subterranean fishes occur in alluvial sediments (part of the hyporheic zone), shallow base-level streams, flooded caves, lakes in the water table, upper vadose tributaries, and epikarst aquifers. We detected 11 main threats, mainly related to agriculture, pasture, and hydroelectric plans, but unmanaged tourism and pollution are also significant threats. Two threats affect a high number of species (physical change of the habitat and food restriction). The river basins with the higher number of identified threats are the upper Tocantins (eight) followed by the upper Paraguaçu (six). Effective proposals to protect this neglected component of the Brazilian biodiversity are still scarce, such as monitoring projects and their function in the subterranean communities, besides education projects aiming to develop public awareness.