A importância de se levar em conta a lacuna linneana no planejamento de conservação dos anfíbios no Brasil

• Autor(a) principal: Moreira, Mateus Atadeu
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/5733
• topic: Lacuna linneana; Biodiversidade; Conservação; Anfíbios brasileiros; Priorização espacial; Linnean shortfall; Biodiversity; Conservation; Brazilian amphibians; Spatial conservation prioritization; CIENCIAS BIOLOGICAS::ECOLOGIA

We only have described a small fraction of the world’s biodiversity. The influence of how much we know biodiversity and how that hinders our strategies for conserving it is a genuine and weighty concern. Brazil has the greatest amphibian diversity in the world with 1026 amphibian species, and the number of described species is increasing at a high rate. It is likely that many of these Brazilian amphibians still undescribed are threatened. Although many new species are being described in Brazil some protected areas are being downsized or downgraded. In this study we aim to analyze how much the Linnean shortfall impairs our ability to prioritize areas for the conservation of a highly diverse and still poorly known group such as the Brazilian amphibians, and whether the main conservation strategy in Brazil is prepared to deal with this shortfall. We made four spatial prioritizations of the known Brazilian amphibians of four arbitrarily chosen scenarios (1980, 1990, 2000 and 2013), then we overlapped these prioritizations with the existing federal protected areas of each scenario, and compared the results, calculating the proportions of the high priority areas that changed place and the proportion of high priority areas federally protected at each scenario. In the first change of scenario 921 of the 4672 cells that comprises the seventeen per cent of highest priority cells in 1980 changed place to form the seventeen per cent most priority cells in 1990 (19,71% of the cells). On the 1990-2000 change 905 of the 4686 cells changed place (19,31%) and on the last change of scenario (2000-2013) 983 of the 4675 (21,01%) highest priority cells has changed place. The percentage of these highest priority areas that was federally protected at each scenario and in each of the biomes was severely low in all cases, but is maidenly rising with time. The new protected areas created between the scenarios (both the strict protection and sustainable use areas) do not follow the new priority areas. It is crucial that Brazilian taxonomy continues to grow. Since Brazil is so important for the future of the global diversity of amphibians is also crucial a systematic planning of new protected areas, using scientific models to account for the Linnean shortfall, in order to protect such an astonishing diversity. Keywords: Linnean shortfall, Biodiversity, Conservation, Brazilian Amphibians, Spatial Conservation Prioritization