Filipe Dias D.,Instituto Brasileiro Of Meio Ambiente E Recursos Naturais Renovaveis |
Pimentel Rocha R.,Federal University of Minas Gerais |
Lees A.C.,Museu Paraense Emilio Goeldi
Revista Brasileira de Ornitologia | Year: 2013
On 24 February 2013 a single Ruff (Philomachus pugnax) was photographed at Lagoa da Pampulha, a reservoir in Belo Horizonte, state of Minas Gerais in central Brazil. Subsequently the site was revisited, and on 2 March 2013 two juvenile individuals were found to be present with at least one remaining until 10 March 2013. This is the first documented record of the Ruff for Brazil after two sight records from Rio Grande do Sul in 1985 and 1998.
De Oliveira L.N.,Federal University of Tocantins |
Lazzarini G.M.J.,Instituto Brasileiro Of Meio Ambiente E Recursos Naturais Renovaveis |
Batista A.C.,Federal University of Parana |
De Lima Fonseca Alves K.C.C.,Federal University of Tocantins |
Giongo M.,Federal University of Tocantins
Floresta | Year: 2015
Human actions change the natural occurrences of wildfire. The indigenous communities, during their time of occupation of the Cerrado, probably utilized fire to manipulate the landscape and its resources. In this study, we mapped and analyzed the spatial distribution of burned areas of the Kraholândia Indigenous Land, from 2003 to 2014, using Remote Sensing resources and GIS tools. During the assessed period, the total burned area extended across 1,516,873 ha, representing 4.94 times the sum of Kraholândia Indigenous Land area (306,871 ha). The average annual burned area was 126,406 ha (41.19%), with the year of the largest burned area recorded at 185,297 ha (60.4%) and the year of the smallest burned area was 71,764 ha (23.4%). There were 29,764 ha (9.7%) that had never been burned during the 12 years, and 1,693 ha (0.6%) that had been burned every year of the period. Moreover, the areas that recorded the highest frequency of fire occurrence and burnings were surprisingly not those that produced the largest burned areas over the period. The remote sensing data, allied with methodology employed, succeeded in identifying the frequency of burnings and wildfire in the Krahôlandia Indigenous Land.
Mandle L.,University of Hawaii at Manoa |
Bufford J.L.,University of Hawaii at Manoa |
Schmidt I.B.,University of Hawaii at Manoa |
Schmidt I.B.,Instituto Brasileiro Of Meio Ambiente E Recursos Naturais Renovaveis |
Daehler C.C.,University of Hawaii at Manoa
Biological Invasions | Year: 2011
Fire regimes influence and are influenced by the structure and composition of plant communities. This complex reciprocal relationship has implications for the success of plant invasions and the subsequent impact of invasive species on native biota. Although much attention has been given to the role of invasive grasses in transforming fire regimes and native plant communities, little is known about the relationship between woody invasive species and fire regime. Despite this, prescribed burning is frequently used for managing invasive woody species. In this study we review relationships between woody exotic plant invasions and fire in invaded ecosystems worldwide. Woody invaders may increase or decrease aspects of the fire regime, including fire frequency, intensity and extent. This is in contrast to grass invaders which almost uniformly increase fire frequency. Woody plant invasion can lead to escape from a grass-fire cycle, but the resulting reduction in fire frequency can sometimes lead to a cycle of rare but more intense fires. Prescribed fires may be a useful management tool for controlling woody exotic invaders in some systems, but they are rarely sufficient to eliminate an invasive species, and a dearth of controlled experiments hampers evaluation of their benefits. Nevertheless, because some woody invaders have fuel properties that differ substantially from native species, understanding and managing the impacts of woody invaders on fire regimes and on prescribed burns should become an important component of resource and biodiversity management. © 2011 Springer Science+Business Media B.V.
Andery D.A.,Avian Diseases Laboratory |
Ferreira Junior F.C.,Avian Diseases Laboratory |
de Araujo A.V.,Avian Diseases Laboratory |
Vilela D.A.R.,Instituto Brasileiro Of Meio Ambiente E Recursos Naturais Renovaveis |
And 6 more authors.
Revista Brasileira de Ciencia Avicola | Year: 2013
Falconiformes (n=82), Strigiformes (n=84) and Cathartiformes (n=14) at a triage center (CETAS-Belo Horizonte, IBAMA, Brazil) were examined between 2008 and 2010. No bird was reactive at hemagglutination-inhibition (HI) for antibodies against Mycoplasma gallisepticum (Mg). Two Caracara plancus (2/68) had HI titers (16-32) against Newcastle disease virus. No Chlamydophila psittaci DNA was detected in the liver (PCR; n=95). Blood smears (Giemsa; n=89) and spleen fragments (PCR; n=82) were 13.5% and 8.5% positive, respectively, for Haemoproteus only. Necropsy of Cathartiformes (n=10), Falconiformes (n=42) and Strigiformes (n=57) showed that trauma injuries were the main cause (63.3%) of admission and death, being fractures (38.5%) of the thoracic limbs (57.1%) the most frequent. Nematode (12.8%), cestode (1.8%), trematode (0.9%), and acanthocephalan (2.7%) parasite infections were relevant. Mites (Acari) were the most frequent (17.4%) external parasites, particularly Ornithonyssus sylviarum in Asio clamator and Amblyomma cajennense in Tyto alba. Chewing lice (10.1%) and Pseudolynchia spp. (9.2%) were also found. Histomonas spp. (6.4%) was found in the ceca of Bubo virginianus, Athene cunicularia, Tyto alba, and Asio clamator, but not in Falconiformes or Cathartiformes. Trichomonas spp. (oral cavity, pharynx and upper esophagus; 9.1%) was detected in Falconiformes and Strigiformes, but not in Cathartiformes. Trichomonas spp. were found in A. cunicularia, Asio clamator, Glaucidium brasilianum and Tyto alba (Strigiformes), and in Rupornis magnirostris, Milvago chimachima, Falco femoralis, Falco sparverius and Caracara plancus (Falconiformes). Coccidia (9.1%) (Sarcocystis spp., 6.4%) and mycosis were observed in most Tyto alba (70%). The evaluated Orders may not pose risks for commercial poultry production. Habitat loss and urban adaptation may be increasingly affecting raptors.
Ferreira Jr. F.C.,Federal University of Minas Gerais |
Donatti R.V.,Federal University of Minas Gerais |
Marques M.V.R.,Federal University of Minas Gerais |
Ecco R.,Federal University of Minas Gerais |
And 4 more authors.
Avian Diseases | Year: 2012
Toxoplasmosis was diagnosed in a vinaceous Amazon parrot based on histopathology and immunohistochemistry. The bird was prostrate on the bottom of the cage and died. Necropsy revealed edema and congestion of the lungs, cloudy air sacs, and mild hepatomegaly. Histopathology revealed severe pulmonary congestion and edema and interstitial mononuclear cell inflammation associated with many cysts containing bradyzoites of Toxoplasma gondii scattered throughout. The heart had mild multifocal lymphocytic myocarditis and free tachyzoites in the muscle fibers, and the kidneys had mild interstitial nephritis and a few cysts containing bradyzoites of T. gondii. Immunohistochemistry was negative for Sarcocystis falcatula and Neospora caninum and confirmed the protozoa as T. gondii. This is the first description of T. gondii in an endangered species of a Brazilian psittacine. © American Association of Avian Pathologists 2012.