CECAV
URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1
Centro Nacional de Pesquisa e Conservação de Cavernas
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19 resultados
Resultados da Pesquisa
Item Updated list of bats (Mammalia: Chiroptera) from the state of Minas Gerais, southeastern Brazil, including new records(2024-05-10) Ferreira, Luan Vinícius Soares ; Tavares, Valéria ; Gregorin, Renato; Garbino, Guilherme Siniciato Terra ; Oliveira, Fred Victor de ; Moras, LigianeThe knowledge of the bat fauna from Minas Gerais, the largest state in southeastern Brazil, has greatly changed in recent years due to increased sampling and taxonomic revisions with reports of range ex tension and/or new species descriptions. The first annotated list of bats for the state dates to over 10 years ago. Our study aimed to update it by incorporating new localities sampled since then and by adding new species records to the list. We also conducted a comprehensive review of the literature and museum databases and analyzed 691 specimens collected in the state from all mesoregions and ecosystems deposited in collections. We documented the occurrence of 99 bat species from nine families, distributed in 181 municipalities, covering all mesoregions and biomes of the state. This is an increment of 30% in bat richness and of 241% in locality sites with bat records in Minas Gerais, when compared with the previous compilation. We report two previously unrecorded species for the state, the phylostomids Rhinophylla pumilio Peters, 1865 and Trinycteris nicefori (Sanborn, 1949). The mesoregions with the largest number of bat collection localities were “Metropolitana” (46), “Zona da Mata” (26), and “Norte de Minas” (21). The Atlantic Forest had the largest number of collection sites compared to the other biomes present in the state (102). There are a lot of sampling gaps in the state, and most of the conservation areas have not yet been sampled for bats. In face of that and based on the recent findings of several new species and records as a result of sampling and revisionary efforts, we suggest the implementation of rapid survey programs accompanied by taxonomic studies within the conservation units of Minas Gerais. Long-term monitoring programs, including bats, are also completely missing in the state.Item Chiropterofauna (Mammalia: Chiroptera) from the Altamiro de Moura Pacheco State Park, Goiás, Brazil(2024-01-09) Carvalho, Erica Santos de; Pena, Simone Almeida; Alexandre, Rafaela Jemely Rodrigues; Dias-Silva, Karina; Bastos, Rogério Pereira; Oprea, Monik; Brito, Daniel; Silva, Jessica Conceição da; Vieira, Thiago BernardiThe Brazilian Cerrado is undergoing important changes. It is estimated that 70% of its natural area has converted to human use. The loss and fragmentation of natural habitats is considered the main cause of species loss in ecosystems. However, the lack of knowledge of biodiversity makes it difficult to design effective conservation measures. This article presents a list and an estimate of the richness of bats in the Parque Estadual Altamiro de Moura Pacheco (PEAMP) in Goiás. All collected bats belong to the Phyllostomidae family, with Carollia perspicillata (67%) and Artibeus planirostris (18%) representing 86% of the captured individuals.Item ESTUDOS DE VALES SECOS EM ÁREAS CÁRSTICAS: REVISÃO E POSSIBILIDADES(2022-06) Nogueira, Adivane Morais; Uagoda, Rogério; Caldeira, DandaraO carste apresenta regiões de conexões entre os sistemas fluviais e cársticos o fluviocarste, dispondo de feições típicas, como os vales secos. Tais feições vêm sendo estudadas de diversas formas para contribuir no entendimento da dinâmica geomorfológica do carste. Este estudo visa fazer uma revisão sobre vales secos em sistemas cársticos, tendo em vista observar o potencial científico destas áreas para diversas aplicabilidades. A revisão utilizou como principal forma de busca a plataforma Web Of Science (todas as bases), abrangendo o período entre 1945-2020, que abordavam sobre tais feições, com o uso das seguintes palavras-chave: karstic valley, dry valleys, blind valley, relict valley, ancient valley, fossil valley, solution valley, paleovalley e paleokarst valley, resultando em vinte e sete trabalhos, com diversas propostas de análise, evidenciando os fatores envolvidos na dinâmica fluviocárstica. O levantamento permite observar que são poucos estudos considerando a extensão de ocorrência de rochas carbonáticas no mundo, havendo concentração das pesquisas no continente europeu. No Brasil, apesar de dispor de regiões carbonáticas e das várias áreas mapeadas com ocorrência de cavernas, principalmente no bioma Cerrado, não há pesquisas sobre o tema, mesmo que viabilizem a identificação dos fatores que influenciam evoluções dos sistemas fluviocársticos.Item Sedimentary records in dry karstic valleys: The case of Mambaí, central Brazil(2023-08) Nogueira, Adivane Morais; Caldeira, Dandara; Uagoda, Rogério; Mendes, Leonardo Chaves; Pupim, Fabiano N.Karstic areas in Central Brazil show significant depositional and erosive facies placed within abandoned dry valley-systems and associated with fluviokarstic dynamics. These valleys have distinct depositional characteristics that offer sedimentary records of both past climatic events in the region and its current fluviokarstic system. The purpose of this paper is to point out and characterize such sedimentary packages, protected by dry valleys that were deposited up until the fluviokarstic transition, thus enabling the correlation of such sediments to past climatic events. The study is based on a combination of geomorphic and sedimentological analyses through the employment of multiple techniques, such as mineralogy, geochronology, stable isotopes, and granulometry, to the analysis of our case studies. These are the three dry valleys around the Ventura, Pedras and Extrema rivers, which in turn comprise the River Vermelho Basin, northeastern Goiás State. Our results suggest that the valleys contain fluvial deposits remnant from the transition of superficial fluvial flow to the underground karstic system. Records provide a general view of the depositional stages placed before and up until the period of fluvial capture in terms of their morphology, dynamics, and sediment architecture. OSL ages indicate that fluviokarstic processes had been in operation since 23 Ka, when the oldest river capture was found to have occurred. Depositions occurred in a reasonably continuous manner, mainly during the last 3.5 Ka, and concentrated around relatively dry and wet events, exhibiting typical depositional gaps in fluvial environments. Consequently, no relationship between the depositions and paleoclimatic events were observed for the analyzed fluviokarstic system.Item UNIDADES DE CONSERVAÇÃO NA PROTEÇÃO DA TIRIBA-DO-PARANÃ, Pyrrhura pfrimeri (AVES: PSITTACIDAE) NAS PAISAGENS CÁRSTICAS DA BACIA DO RIO PARANÃ(2022) Dornas, Tulio; De-Carvalho, Crizanto Brito; Morais, Fernando; Nogueira, Lauana Costa; Hennessey, BennettA tiriba-do-paranã, Pyrrhura pfrimeri, é uma ave endêmica das fl orestas estacionais deciduais estabelecidas nos relevos cársticos da bacia do rio Paranã, na região central do Brasil. A espécie é ameaçada de extinção em nível global e nacional na catogoria “Em Perigo” devido à redução e elevada fragmentação populacional. Unidades de Conservação (UCs) são instrumentos estratégicos para a preservação da biodiversidade brasileira. Deste modo, é objetivo deste estudo analisar a representatividade da proteção legal de P. pfrimeri em relação às UCs existentes ao longo das paisagens cársticas de matas secas da bacia do rio Paranã, entre os estados de Tocantins e Goiás. Por meio de registros primários obtidos em expedições a campo e de registros secundários compilados na literatura e em plataformas de ciência cidadã, constatou-se que P. pfrimeri é protegida legalmente, sob diferentes graus de proteção, por cinco UCs: Parque Estadual de Terra Ronca, Floresta Nacional Mata Grande Área de Proteção Ambiental (APA) Nascente do Rio Vermelho e APA Vale do Rio Manso, todas em Goiás, e RPPN Aurora Natura, a única em Tocantins. Outras três UCs estaduais planejadas: Parque Estadual Serra da Prata, Parque Estadual de Aurora e Parque Estadual Vale do rio Palmeiras, caso criadas, podem aumentar consideravelmente a proteção legal sobre a espécie, condição também ampliada com criação de novas UCs do tipo Monumento Natural, Refugio da Vida Silvestre e RPPNs. Um aumento da proteção legal de P. pfrimeri pode contribuir para o estado de conservação de uma das mais ameaçadas as aves brasileiras.Item An Exceptionally High Bat Species Richness in a Cave Conservation Hotspot in Central Brazil(2021-07-09) Barros, Jennifer de Sousa; Bernard, Enrico; Ferreira, Rodrigo LopesCaves are among the most used and important roosts for hundreds of bat species worldwide. However, caves remain some of the least known and most threatened environments globally. Documenting the richness of bat species in caves is important not only to draw attention to the uniqueness and relevance of these roosts, but it also contributes to the identification of priority sites for the conservation of bats and the cave fauna dependent upon them. Here, we assessed and described an exceptionally high bat richness in a group of caves in southeastern Tocantins, central Brazil. Inventories carried out in 19 caves resulted in seven families and 31 bat species, of which three were new regional records. Twelve caves were used by threatened and endangered bat species, eight had high diversity indices, and seven caves had high species richness, including one cave that may hold a world record with 26 bat species found inside. The variation in beta diversity is mainly due to species turnover, which indicates that protecting the largest possible number of caves would be ideal for the most efficient conservation of local bat assemblages. The sampled region stands out for its high potential for the conservation of endangered species, and we strongly recommend the full protection of 15 caves classified as a priority for conservation.Item Proposal for a Geobiodiversity Index Applied to the Morphoclimatic Domain of Cerrado—Brazil(2021-06-30) Valdir Adilson SteinkeThe Morphoclimatic Domain of Cerrado is located in the Brazilian territory, and it is a central area of great importance for the ecological scenario of Brazil. This area has undergone strong anthropic pressure in the last 60 years, especially due to the expansion of agribusiness—a warning sign for the conservation of its natural resources. Studies on geodiversity and biodiversity have sought to contribute with data for maintaining the landscapes of this region. The objective of this proposal is the generation of a geobiodiversity index capable of indicating the most relevant areas of geological, geomorphological, and vegetation aspects to be preserved and conserved within existing legal instruments. The methodological procedures were centered on segmenting the area in 2.472 hexagonal cells, which were subjected to a spatial matrix analysis in GIS and geostatistical environments capable of articulating the various elements and generating an agglutinating index for each cell. The result indicates 276 areas with the highest index value, presenting, therefore, possible classified areas. This index is an attempt to draw attention to Cerrado and the importance of its conservation.Item An exceptionally high bat species richness in a cave conservation hotspot in Central Brazil(2021-06) Ferreira, Rodrigo Lopes; de Sousa Barros, Jennifer; Bernard, EnricoCaves are among the most used and important roosts for hundreds of bat species worldwide. However, caves remain some of the least known and most threatened environments globally. Documenting the richness of bat species in caves is important not only to draw attention to the uniqueness and relevance of these roosts, but it also contributes to the identification of priority sites for the conservation of bats and the cave fauna dependent upon them. Here, we assessed and described an exceptionally high bat richness in a group of caves in southeastern Tocantins, central Brazil. Inventories carried out in 19 caves resulted in seven families and 31 bat species, of which three were new regional records. Twelve caves were used by threatened and endangered bat species, eight had high diversity indices, and seven caves had high species richness, including one cave that may hold a world record with 26 bat species found inside. The variation in beta diversity is mainly due to species turnover, which indicates that protecting the largest possible number of caves would be ideal for the most efficient conservation of local bat assemblages. The sampled region stands out for its high potential for the conservation of endangered species, and we strongly recommend the full protection of 15 caves classified as a priority for conservation.Item Proposal for a Geobiodiversity Index Applied to the Morphoclimatic Domain of Cerrado—Brazil(2021-06-30) Steinke, Valdir AdilsonThe Morphoclimatic Domain of Cerrado is located in the Brazilian territory, and it is a central area of great importance for the ecological scenario of Brazil. This area has undergone strong anthropic pressure in the last 60 years, especially due to the expansion of agribusiness—a warning sign for the conservation of its natural resources. Studies on geodiversity and biodiversity have sought to contribute with data for maintaining the landscapes of this region. The objective of this proposal is the generation of a geobiodiversity index capable of indicating the most relevant areas of geological, geomorphological, and vegetation aspects to be preserved and conserved within existing legal instruments. The methodological procedures were centered on segmenting the area in 2.472 hexagonal cells, which were subjected to a spatial matrix analysis in GIS and geostatistical environments capable of articulating the various elements and generating an agglutinating index for each cell. The result indicates 276 areas with the highest index value, presenting, therefore, possible classified areas. This index is an attempt to draw attention to Cerrado and the importance of its conservation.Item Bats of the state of Minas Gerais, southeastern Brasil(Chiroptera Neotropical, 2010-07) Tavares, Valéria da C.; Aguiar, Ludmilla M. de S.; Perini, Fernando A.; Falcão, Fábio C.; Gregorin, Renato