942 resultados para BRAZILIAN ATLANTIC FOREST
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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This study characterized the Atlantic Forest vegetation and compared the structure of the native tree community occurring along a toposequence at watershed D of the Serra do Mar State Park, municipality of Cunha, SP - Brazil. The study was conducted in 64 plots, of 10 x 10 m, distributed in sites downstream (T1), intermediate (T2) and upstream (T3) of the toposequence, recording all individuals with DBH (Diameter at Breast Height) >= 0.5 cm. Altogether 1.093 individuals were sampled, and 89 species were identified, belonging to 61 genders and 31 families. At T1 site there was a greater abundance and density of individuals; T2 had the highest diversity index and basal area; while in T3 it was observed highest species richness and greater percentage of rare species. The specie Cyathea delgadii in the lower third of toposequence, and the Alchornea triplinervea in the intermediate and upper third were the most important. The sites downstream and upstream of the toposequence showed the largest differences in structure. In the middle portion of the watershed and there was a greater difference between the similarity between species.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Six species of the genus Callithrix can be found across the Atlantic Forest extension, being the Callithrix geoffroyi, Geoffroy`s marmoset, the least studied species. The objective of this study is to investigate the behavioral aspects of the species in captivity, and how the environmental enrichment techniques influence those behaviors. To this end, we have studied three specimens of C. geoffroyi, in captivity at Municipal Zoo of Piracicaba, São Paulo. The enclosure includes a 37m2 with under masonry, concrete platforms with external deep, trunks, a floor of grass and soil, e grid in their other three sides. The sampling method was focal per time interval, with records every 30 seconds in sessions of 30 minutes, totaling 30 hours for each animal, which were distributed in a baseline phase, an environmental enrichment phase and post-enrichment phase (n = 3660 records in each phase). The twelve enrichment techniques were applied: the physical environment (branches for perches and hoses fabrics for bedding and vanishing points), cognitive (radio, mirror, puzzle food) and food (insects, flowers and eggs hidden, wrapped). Initially, to determine the period of greatest activity of marmosets, we investigated the pattern of activity for three days (9:00 am to 17:00 pm) consecutively at intervals of 15 minutes, recording the number of active and inactive individuals. The 495 records signaled greater activity in the morning, then selected period for the completion of this work. The ethogram comprised 16 behaviors. The inactivity was the predominant phase behavior baseline and post-enrichment with a significant decrease (h=8,62, p <0.01) in the enrichment phase, and a significant increase in the post enrichment (h=18,15, p <0.001). The same was seen for the use of substrate (grid and ground vs. Trunk and concrete, h=5,09, p <0.001 and h=3,98, p <0.05)... (Complete abstract click electronic access below)
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The Atlantic forest has a large number of endemic species due to the varieties of environments, altitudes, and climates found along its distribution. The species Brachycephalus ephippium is an example of endemic anuran from this forest formation, occurring in the states of São Paulo, Rio de Janeiro and Minas Gerais, between 750 and 1200 m altitude. This species is abundant in the Serra do Japi, an Atlantic Forest remnant, which houses high biodiversity, located in Jundiaí city, between three big urban centers in the state of São Paulo. This remnant, which has altitude ranging between 700 and 1300 meters, is threatened by global climate changes and, spite of legally protected, by intense pressure of urbanization. The aim of the present study was to verify the association between of environmental variables with the abundance and distribution of B. ephippium in the Serra do Japi. The air relative humidity showed a positive correlation with the presence of B. ephippium individuals and the best model to explain the abundance involved air relative temperature and litter temperature. These results allowed the investigation of the environment use by this species and can be used to provide conservationist actions
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The medium to large-sized mammals make population control of invertebrates and vertebrates, as well as seed dispersers are also important. Are losing territory and living area because of deforestation and fragmentation of natural areas, mainly in the Atlantic Forest. The RPPN Amadeu Botelho, in the municipality of Jaú, São Paulo State, is one of the last forest remnants of interior paulista. It is isolated from other forest fragments and thus is a wildlife refuge in the region of Jaú, Midwest of the State. Animals as Pumas (Puma concolor), ocelot (Leopardus pardalis), cat-Moorish (Puma yagouaroundi), have already been sighted in the reserve by officials and residents. The buffer property of the farm Santo Antônio dos Ipês, is surrounded by several plantations, and is very close to the Centre of the city of Jaú. In addition to the lifting of the reservation, it sized mammal species diagnosed the influences that the activities of the farm and the proximity to the Centre of the municipality of Jaú exert to fauna studied
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Atlantic Forest and Cerrado are between the biological richest areas in the world, for that are considered top conservation priorities. Those ecosystems are found at Botucatu region, where it´s extremely fragmented by routes, agricultural areas and urban centres. This fragmentation causes restrictions on animals populations, in particular to medium and large mammals, that needs larger areas to live and also are often hunted. Even isolated and suffering anthropic influences the fragments are fundamental for local biodiversity conservation. We realized a mammal survey on two forest fragments of Atlantic forest transition to Cerrado of Rubião Júnior – Botucatu – SP – Brazil: Santo Antônio Church and Parque das Cascatas forests. The Santo Antônio church munt is considered a turistic point and its forest receive many visitants, Parque das Cascatas forest is inside of a residential condominium. Both areas are classify as semidecidual stational forest and are disconected by Domingos Sartori route, that connect Botucatu centre to Rubião Júnior district. Around both fragments can be found residences, plantations and pastures. The utilized method included: recognition of tracks on the forests, interviews with next residents and sand plots mounting. The interviews indicated 29 mammals species, and 19 was validated for animal traces, overruns or visualization. Other 3 species found were not mentioned on interviews. Totally, was found 22 small and medium mammals presence evidences on both forest fragments. Parque das Cascatas forest showed more diversity (19) then Santo Antônio Church forest (11), and species like Eira barbara, Procyon cancrivorus, Mazama americana, Shiggurus villosus, Dasypus novemcinctus, Didelphis albiventris, Lutreolina crassicaudata and Lepus europaeus looked for other areas once that was verifyed overruns of individuals... (Complete abstract click electronic access below)
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With the degradation of Atlantic Forest over the years, the area that this ecosystem has occupied before decreased and in a lot of cases it was separated in little fragments, each one isolated in a different way depending of the local antropic action. In this context, this study compares the helminth fauna of anurans from two different fragments of Atlantic Forest, one inset in a matrix of eucalyptus (Eucaliptus sp.) reforestation and the other in a matrix of pasture (Brachiaria sp.), verifying if there is any difference between the structure of helminth communities. There were collected 155 anurans in both fragments, being 77 Hypsiboas albopunctatus, 18 Hypsiboas faber, 27 Hypsiboas polytaenius e 33 Dendropsophus minutus. These were weighted and their snout-vent lengths were measured. After the animals were euthanatized and their internal organs and coelomatic cavity were evaluated for helminth infection. There were identified one trematode species (Haematoloechus fuelleborni) and 14 nematode species (Aplectana sp., Cosmocerca parva, Cosmocerca sp1., Cosmocerca sp2., Cosmocercoides sp., Falcaustra mascula, Cosmocercidae larvae, nematode larvae, Physaloptera sp. larvae, Ochoterenella sp., Oswaldocruzia subauricularis, Raillietnema simples, Rhabdias sp. e Schrankiana sp.). The hylids' helminth fauna studied in São Luiz do Paraitinga fragments were relatively rich, being registered 15 helminth species in the captured anurans. The comparison between the fragments did not show differences in relation of the composition and abundance of helminth fauna in spite of the individualities of each environment