Conservação de espécies em áreas de monocultura de soja no sudoeste goiano: uma avaliação usando larvas de anfíbios anuros
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Data
2009-11-06
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Universidade Federal de Goiás
Resumo
The basic knowledge of the answer of the species to the anthropic and natural
perturbations on environments is the first step in the development of management
strategies to the conservation biology. This study analyzes the pattern of occurrence of
anurans species in relation of habitat, considering two different landscape uses from
Jataí municipality, southwestern Goiás State, Central Brazil. Anurofaunal composition
on Jataí represented 24% of anuran diversity of Goiás State, with great similarity with
Aporé municipality, hydrographic sub-basin of the river Corrente. The relation between
the species richness in seven municipalities with environmental and social attributes
were non-significant. Considering the tadpoles assemblages in Jataí were sampled 40
ponds (24 distant of the monoculture and 16 located in the proximities of the
monoculture). The study registered 4.529 specimens, classified in four families, 18
anuran species, presenting Scinax fuscovarius, Dendropsophus minutus and Eupemphix
nattereri the most common species. The mean richness of species by sampled pond was
significantly different in the families Hylidae and Leptodactylidae. The results showed
that ponds distant of monoculture were more heterogeneous and possess a biggest
diversity of species. The Canonical Correspondence Analyses showed the biggest
predictive power to the environmental variables: predator types; distance of forest
fragments; depth; and, hydroperiod. Spatial and temporal attributes were important to
the species composition. Ponds distant to the monoculture presented (in mean) a bigger
number of types of microhabitat and significant relation between the availability and the
utilization by tadpoles. Significant difference was observed between niche breadths in
the categories, with biggest values in the ponds distant to the monoculture. The species
in ponds distant to the monoculture showed high plasticity in the environmental occupancy. The relation between spatial niche overlap and ecomorphological and
phylogenetic patterns to the pars of the species were non-significant in the multivariate
context. The results will subsidize actions directed to the management in agricultural
areas in the scope of Conservation Biology
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Citação
VAZ-SILVA, Wilian. Conservation of species in areas of monoculture
soybeans in southwestern Goias: an evaluation using
amphibian larvae. 2009. 111 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2009.