Navegando por Assunto "Impact"

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Trabalhos publicados em eventos
Educational campaign to reduce the impact of artificial light on sea turtle nesting beaches in Brazil.
(2000) MARCOVALDI, M. Â; BELLINI, C; CASTILHOS, J. C de; SILVA, A. C. C. D. da; GALLO, B. M. G; BAPTISTOTTE, C.; LIMA, E. H. S. M; LIMA, E. P; SANCHES, T. M; THOMÉ, J; PATIRI, V. J. A
Several important stages of reproduction by sea turtles normally take place at night, under the cover of darkness on beaches. Artificial lights on or near beaches often reduce the number of female sea turtles that emerge from the ocean to nest (Witherington, 1992; Ehrhart et al. 1996). When females do lay their eggs on beaches that are subject to artificial lighting, seafinding of the resultant hatchling turtles is often disrupted and they often go away from the sea (e.g. Philibosian, 1976; Peters and Verhoeven, 1994). Misoriented hatchlings face increased mortality from land predators, accidental trampling by people or vehicles, or desiccation following sunrise. Development of coastal areas, in the form of homes, hotels, industrial complexes, and recreational areas, leads to an increase of nighttime lighting. Unchecked lighting on beaches used by sea turtles can have serious impacts on nesting populations, and as such management of lighting on or near beaches is a priority for most sea turtle conservation programs.
Artigo
Priority caves for biodiversity conservation in a key karst area of Brazil: comparing the applicability of cave conservation indices
(2018-05-09) Rabelo, Lucas Mendes; Souza‑Silva, Marconi; Ferreira, Rodrigo Lopes
Landscapes in tropical regions have been greatly altered by human activities, as a product of growing demands for mineral and agricultural production, as well as those related to the generation of energy (e.g., hydroelectric, wind). In this scenario, caves have suffered several impacts, sometimes irreversible, as they are generally associated with rocks of high economic value and are closely related to epigean systems. Several indices have been proposed to guide conservation policies for the world’s speleological heritage, although few of them consider cave biodiversity as a criterion. To address this knowledge gap, we tested the applicability of four newly proposed indices to assist researchers and policy-makers select priority areas for global cave biodiversity conservation. To compare indices, we used data from 48 caves of the largest carbonate region of South America (Bambui geological group), all found within the Cerrado, a global biodiversity hotspot. Each of the four indices considered cave biodiversity as a criterion, although only three adequately evaluated this attribute. Based on results of Simões index and CCPi, which were the most appropriate in relation to indicate priority caves for biodiversity conserva-tion in regions where the fauna and its distribution are not fully known, 15 of the 48 caves were identified as conservation priorities.