CEMAVE
URI permanente desta comunidadehttps://bdc.icmbio.gov.br/handle/cecav/1399
Centro Nacional de Pesquisa e Conservação de Aves Silvestres
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5 resultados
Resultados da Pesquisa
Item Remaining suitable areas for the critically endangered Brazilian Merganser (Mergus octosetaceus; Aves, Anseriformes) are threatened by hydroelectric power plants(Perspectives in Ecology and Conservation, 2021) Bovo, Alex Augusto Abreu; Ferraz, Katia Maria P. M. de Barros; Ribeiro, Flávia; Lins, Lívia Vanucci; Barbosa, Marcelo de Oliveira; Previdente, Fernando Henrique; Disconzi, Gislaine M.S.; Sebaio, Fabiane; Antas, Paulo de Tarso Zuquim; Guaraldo, André de Camargo; Resende, Alexandre; Lagos, Adriano Rodrigues; Barbosa, Antônio Eduardo Araujo; Silveira, Luís FábioThe critically endangered Brazilian Merganser Mergus octosetaceus is one of the rarest waterfowls in the world. Only three isolated populations remain in the Brazilian Cerrado, totaling less than 250 individuals. We evaluated the potential influence of small hydroelectric plants (SHPs) and ProtectedAreas (PAs) on the species conservation. We identified suitable areas by using recent presence records and environmental predictors, and overlapped it with the species dispersion zone and the SHP impact zone. Suitable areas for the species are limited to 4% of the geographic space (142,899 km2). Within the dispersion zone, we found 36 planned SHPs, which can impact 4.1% of the suitable area and 17.2% of the suitable area inside PAs. Our results expose the critical situation of the Brazilian Merganser, with few isolated suitable areas, high potential impacts for the three known populations, and a high proportion of suitable areas out of PAs. We highlight the need of considering SHPs impacts on the Brazilian Merganser in environmental impact assessment studies to reduce them. Furthermore, we appointed areas for search of new populations, and emphasize how urgent the implementation of effective conservation actions aiming to protect the remaining suitable habitats for the Brazilian Merganser is.Item An overview of migratory birds in Brazil(Papéis Avulsos de Zoologia, 2018) Somenzari, Marina; Amaral, Priscilla Prudente do; Cueto, Victor R.; Guaraldo, André de Camargo; Jahn, Alex E.; Lima, Diego Mendes; Lima, Pedro Cerqueira; Lugarini, Camile; Machado, Caio Graco; Martinez, Jaime; Nascimento, João Luiz Xavier do; Pacheco, José Fernando; Paludo, Danielle; Prestes, Nêmora Pauletti; Serafini, Patrícia Pereira; Silveira, Luís Fábio; Sousa, Antônio Emanuel B. A. de; Sousa, Nathália Alves de; Souza, Manuella Andrade de; Telino-Júnior, Wallace Rodrigues; Whitney, Bret MyersWe reviewed the occurrences and distributional patterns of migratory species of birds in Brazil. A species was classi fied as migratory when at least part of its population performs cyclical, seasonal movements with high fidelity to its breeding grounds. Of the 1,919 species of birds recorded in Brazil, 198 (10.3%) are migratory. Of these, 127 (64%) were classified as Migratory and 71 (36%) as Partially Migratory. A few species (83; 4.3%) were classified as Vagrant and eight (0,4%) species could not be defined due to limited information available, or due to conflicting data.Item The rarest of the rare: rediscovery and status of the critically endangered Belem Curassow, Crax fasciolata pinima (Pelzeln, 1870)(Papéis Avulsos de Zoologia, 2018) Alteff, Eduardo França; Gonsioroski, Gustavo; Barreiros, Marcelo; Torres, Leonardo Gabriel C. de Oliveira; Camilo, André Restel; Mozerle, Hugo Borghezan; Sousa, Antônio Emanuel B. A. de; Medolago, César Augusto Bronzatto; Martínez, Carlos; Lima, Diego Mendes; Ubaid, Flávio Kulaif; Mendonça, Eloisa Neves; Tomotani, Barbara Mizumo; Silveira, Luís FábioThe Belem Curassow (Crax fasciolata pinima) is one of the most endangered birds in South America, without sight ings of birds in the wild for 40 years. This subspecies is nationally and internationally classified as critically endangered and close to extinction, suffering from poaching and deforestation in its range. Here we present new records of free-living individu als made on three indigenous lands in Pará and Maranhão states: in part of Terra Indígena Mãe Maria, Bom Jesus do Tocantins, Pará; in locations within the Reserva Biológica do Gurupi/Terra Indígena Alto Turiaçu, Centro Novo do Maranhão, Maranhão; and around the Terra Indígena Rio Pindaré, Alto Alegre do Pindaré, Maranhão. We also provide recommendations to protect this bird via a dedicated conservation program which includes finding new individuals in non-sampled areas (north of BR-222), es timating population size, enhancing taxonomic and natural history knowledge, capturing wild animals in order to start urgent ex situ conservation programs, and developing environmental awareness programs with the local and indigenous populations.- Monitoramento da riqueza de aves em área de ecótono Amazônia-Cerrado e a importância de estudos de longo prazo(2019) Matinata, Bianca; Somenzari, Marina; Silveira, Luís FábioA região abrangida pela Bacia Hidrográfica dos Rios Tocantins/Araguaia representa a transição entre os biomas Cerrado e Amazônia, sendo ainda pouco conhecida quanto à sua diversidade de aves. Entre os anos de 2009 e 2018, foram realizadas 12 expedições de campo em uma localidade situada neste ambiente de transição, em Santana do Araguaia, Pará (09°44’02,63”S, 50°23’19,55”O). Foi empregada a associação de distintas metodologias (observação direta, pontos de escuta, redes de neblina e coleta com arma de fogo) e amostradas as diferentes formações florestais encontradas na heterogeneidade de ambientes do enclave amazônico com os campos de Cerrado. A primeira lista de espécies publicada para a região, com base nos dados de 2009 e 2010, indicou 509 espécies. A inclusão dos dados de 2011 a 2018 resultou no aumento desta riqueza para 558 espécies, com representantes de 26 ordens e 72 famílias, reforçando a importância dessa localidade como a segunda mais rica em aves no Brasil, ficando atrás apenas da região da Serra dos Carajás, com 575 espécies. As expedições permitiram ainda a documentação da expansão do limite norte da distribuição das espécies Sturnella superciliaris (polícia-inglesa-do-sul) e Colaptes campestris (pica-pau-do-campo), além do registro de 16 espécies ameaçadas de extinção em nível nacional e 54 de hábitos migratórios. Os dados apresentados destacam a importância de estudos de longo prazo, que possibilitam avanços significativos no conhecimento sobre diversidade local gerando dados de qualidade para embasar medidas de conservação.
Item Power line electrocution as an overlooked threat to Lear’s Macaw (Anodorhynchus leari)(Internation Journal of Avian Science (Ibis), 2022) Biasotto, Larissa D.; Pacífico, Erica C.; Paschotto, Fernanda R.; Filadelfo, Thiago; Couto, Maíla B.; Sousa, Antônio Emanuel B. A.; Mantovani, Plinio; Silveira, Luís Fábio; Tella, Fernando Ascensão José L.; Kindel, AndreasElectrocution can pose a serious threat to large birds, particularly threatened species with low population sizes. However, few studies have focused on the impacts of electrocution on large parrots such as the Endangered Lear’s Macaw Anodorhynchus leari, endemic to the Brazilian Caatinga. Here, we compile and describe 31 electrocution events, as reported by villagers, indicating that electrocution may be an important threat to Lear’s Macaw. We suggest a research and monitoring agenda to better understand the spatial and temporal patterns of this impact and recommend some immediate mitigation measures for decreasing electrocutions.