A importância de se levar em conta a lacuna linneana no planejamento de conservação dos anfíbios no Brasil
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2015-04-28
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Universidade Federal de Goiás
Resumo
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
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ATADEU, M. A importância de se levar em conta a Lacuna Linneana no planejamento de conservação dos anfíbios no Brasil. 2015. 63 f. Dissertação (Mestrado em Ecologia e Evolução) - Universidade Federal de Goiás, Goiânia, 2015.