Navegando por Assunto "Conservation unit"

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Artigo
Bats (Mammalia: Chiroptera) of Ubajara National Park, Ceará, Brazil: a diversity assessment using complementary sampling methods
(2024-09-16) Pavan, A.C.; Urbieta, G.L; Ramalho, W.P; et al.
Bats are unique among mammals in their capacity for powered flight and present high species diversity and feeding habits in the Neotropical region. Despite the remarkable increase in knowledge on the distribution of neotropical bats in recent decades, information on the species’ occurrence throughout Brazil is still widely heterogeneous, with significant knowledge gaps in many biomes. The Ubajara National Park (PNU), northwestern Ceará, is an area of extreme biodiversity in the Caatinga biome, characterized by several natural caves associated with a noticeable bat community. Herein, we carried out a complementary inventory of bat diversity in the PNU, focusing on six caves and their surrounding foraging sites. Two surveys totaling 36 sampling nights were conducted using complementary methods such as mist nets, harp trap, roosting searches, and acoustic monitoring. Thirty species of bats belonging to eight families were recorded. We found significant complementarity between the sampling methods resulting in the stabilization of the rarefaction curve. Eight species were found in roosting colonies in at least one of the sampled cavities. A total of 965 individuals from 18 species, with the majority belonging to the family Phyllostomidae, were recorded using active sampling techniques. Passive acoustic monitoring yielded 14 different sonotypes of species from the Emballonuridae, Mormoopidae, Molossidae, Vespertilionidae, and Noctilionidae families. The acoustic activity of bats from distinct families was higher in the dry season and varied throughout the night. Two species registered with passive acoustic monitoring were among the captured ones, thus reinforcing the importance of diversifying methodologies to obtain more complete bat inventories.
Artigo
First molecular evidence of frogs as a food source for sand flies (Diptera: Phlebotominae) in Brazilian caves
(2021-04-14) Costa, J.C.R.; Santos, C.S.
Genus and species of phlebotomine sand flies have been recorded and described in caves in Brazil, but no study has provided the food source used by sand flies in these environments. Herein, we identified the blood source used by sand fly species in caves located at “Quadrilátero Ferrífero” (QF), Minas Gerais state. Specimens were manually collected near or on anurans inside ferruginous caves in Serra do Gandarela National Park and Serra do Rola Moça State Park. Males and females were placed in vials with 70% alcohol and stored at −10°C. Females engorged, after specific identification, had DNA extracted and followed for PCR amplification using specific primers. Sequencing was analyzed in the GenBank and Barcode of Life. A total of 198 specimens were collected (107 females and 91 males), all of them belonging to species Sciopemyia aff. microps (88.89%), Sciopemyia sordellii (10.61%), or Martinsmyia oliveirai (0.50%). When it comes to the females, 89 were S. aff. microps and 18 S. sordellii. Nineteen engorged females of S. aff. microps were analyzed and most of them (n=18) presented blood from Bokermannohyla martinsi and one contained blood from Scinax fuscovarius. The blood present in engorged females of S. sordellii (n=4) was from B. martinsi. Sciopemyia genus specimens are commonly found in collections carried out inside natural caves, but this was the first study to prove that females of this genus feed on cold-blooded animals in nature.
Artigo
GEOMORFOLOGIA CÁRSTICA NO MONUMENTO NATURAL CAVERNAS DE MARTINS, SEMIÁRIDO BRASILEIRO
(2024-04) HILÁRIO, DÊNIS DOS SANTOS; LOPES, DAVI DO VALE
O termo carsteé amplamente utilizado associado ao processo de dissolução em rochas carbonáticas, porém, atualmente, também é aceito para o processo de dissolução em diferentes tipos de rochas, como evaporitos, quartzitos, arenitos, entre outros. No semiárido brasileiroexiste uma carência de estudos associados à dissolução em mármore. Oobjetivo deste trabalho foi fazer uma caracterização da geomorfologia cárstica no Monumento Natural Cavernas de Martins, no semiárido brasileiro.Realizou-se pesquisa bibliográfica sobrea temática. Realizou-se atividades de campo no município de Martins-RN, com ênfase nacaverna denominada“Casa de Pedra”. Realizou-se identificações e descrições das feições cársticas. Realizou-se a confecção de mapas em ambiente SIG, com uso do softwareQGIS. A criação da unidade de conservação foi um importante passo em direção à geoconservação da área, a publicação do plano de manejo por parte do IDEMA é urgente para que ações futuras se deem de maneira consorciada com o desenvolvimento sustentável. Existe uma urgência napreservação das formas cársticas encontradas na MONA Martins. As cavernas representam um importante sítio de interesse científico, com feições singulares para o contexto regional que auxiliam no entendimento da evolução e gênese de relevos cársticos, bem como nas mudanças ambientais experimentadas na região ao longo do tempo geológico.