De Carli R.C.,Centro Golfinho Rotador |
Silva F.J.L.,Centro Golfinho Rotador |
Silva F.J.L.,Grande Rio University |
Journal of the Marine Biological Association of the United Kingdom | Year: 2017
Activities displayed by animals are usually cyclic, and fluctuations in behavioural repertoires can be observed on a daily or seasonal timescale. The present study describes daily and seasonal variations in the aerial events – such as leaps, spins and slaps with body parts – by spinner dolphins in Baía dos Golfinhos, Fernando de Noronha Marine National Park, in Brazil. To measure aerial events by dolphins, we compiled and analysed data collected from January 2006 to December 2010. A total of 113,027 aerial events were recorded during 1431 days of land-based daytime observations. Our results show that the frequency of aerial events was positively correlated with the number of dolphins in the bay. The relative frequency of aerial events was higher in the rainy season, when compared with the dry season. Aerial activities also varied throughout the day, with dolphins being more active in the morning, specifically from 8:00 a.m. to 8:59 a.m., regardless of the season. Copyright © Marine Biological Association of the United Kingdom 2017
Ribeiro K.T.,Instituto Chico Mendes Of Conservacao Da Biodiversidade Icmbio |
da Rocha G.F.S.,ICMBio |
Saraiva D.G.,ICMBio |
Saraiva D.G.,University of Sao Paulo |
And 7 more authors.
Oecologia Australis | Year: 2010
We report a study first designed to deal with a collective condemnation of the capybaras, in a protected area. The emphasis shifted from the capybaras to the high risks associated to exposure to ticks, a diversified group of complex ecological relations, both with hosts and pathogens. A management program associating communication tools and varied strategies to reduce exposition to ticks was collectively proposed considering local perception about the capybaras and their ecological relations, the risk of occurrence of spotted fever, the spatial distribution of ticks, and resistance of local community to explicitly deal with transmissible health problems, due to high social magnificence and economic losses after a wrong report about Schistosomiasis in the region in a previous year.
de Oliveira A.S.,Federal University of Viçosa |
Steidle Neto A.J.,UFSJ |
Ribeiro A.,Federal University of Viçosa |
Rascon Jr. N.L.,ICMBio |
And 2 more authors.
Revista Brasileira de Engenharia Agricola e Ambiental | Year: 2012
The genus Eucalyptus is important in commercial forest plantations due to its rapid growth and ability to adapt to Brazilian climatic conditions. Among the most important stages for production of eucalyptus seedlings, through vegetative propagation, rooting is highlighted due to its requirements for water, nutrients and management which may compromise the quality of seedlings growing demand in Brazilian silviculture. This study aimed to determine the thermal sum to the rooting of clonal cuttings of eucalyptus (Eucalyptus grandis × E. urophylla) and generate equations to estimate the biomass accumulation in the same stage of production, based on the concept of degree-days (thermal time). The study was conducted in an acclimatized greenhouse in the Seedling Nursery of the Department of Forestry, Universidade Federal de Viçosa, Minas Gerais State, Brazil. At the start of rooting, the mean fresh weight of seedlings was 0.76 ± 0.17 g and the dry biomass was 0.17 ± 0.04 g. At the end of rooting, the means of fresh and dry biomass of seedlings were 1.49 ± 0.43 g and 0.21 ± 0.06 g, respectively. For rooting of eucalyptus seedlings 316.42 degree-days were necessary.
Barbo F.E.,University of Sao Paulo |
Gasparini J.L.,Federal University of Espirito Santo |
Almeida A.P.,ICMBIO |
Zaher H.,University of Sao Paulo |
And 4 more authors.
Zootaxa | Year: 2016
A new insular species of the genus Bothrops is described from Ilha dos Franceses, a small island off the coast of Espírito Santo State, in southeastern Brazil. The new species differs from mainland populations of B. jararaca mainly by its small size, relative longer tail, relative smaller head length, and relative larger eyes. The new species is distinguished from B. alcatraz, B. insularis and B. otavioi by the higher number of ventral and subcaudal scales, relative longer tail and smaller head. The new species is highly abundant on the island, being nocturnal, semiarboreal, and feeding on small lizards and centipeds. Due its unique and restricted area of occurrence, declining quality of habitat, and constant use of the island for tourism, the new species may be considered as critically endangered. Copyright © 2016 Magnolia Press.
De Oliveira Ortiz J.,National Institute for Space Research |
Rosim S.,National Institute for Space Research |
Ortiz M.J.,Edificio Crystal Center |
De Freitas Oliveira J.R.,National Institute for Space Research |
And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014
This work establishes a semi-automatic methodology to define and evaluate the Environmental Protection Areas (EPA), in the Paraíba River Basin, Brazil, taking account the land use and the water quality. The development of this work started from the water capitation point of Guaratingueta city located on the stream that runs through the city. From ASTER GDEM data the drainage network and the basin catchment was automatically extracted. Landsat images for the dates of 1989, 2001 and 2014 were digitally classified and the land uses were mapped, considering the area of permanent protection (APP) for drainage, respecting the limits indicated by Brazilian forest code. Scenes from the RapidEye satellite were used to answer questions of classification, due to good image definition. The study showed that in 1989, the total area classified as APP, 37.59% were anthropized, reaching 37.98% in 2001 and 36.98% in 2014. In a few years it was possible to associate data from water quality, measured directly at the capitation. In 2001 the water quality data showed that the intensive use of fertilizers drained into the Guaratingueta stream by rice paddies was seriously affecting the water supply of the municipality. In 2008 measures for water quality at the capitation point showed that the water resources were still impacted by agricultural activities from the rice fields. So, this work indicates the need for revitalization of the APP inside the EPA Guaratingueta in order to meet the law, protect watersheds and also avoid large investments in water treatment arriving for public consumption. © 2014 SPIE.
Ramos F.M.,Federal University of Pará |
Sanches E.G.,Claro |
Fujimoto R.,Federal University of Pará |
Cottens K.F.,ICMBio |
Cerqueira V.R.,Federal University of Santa Catarina
Boletim do Instituto de Pesca | Year: 2012
This study evaluated the growth of the dusky grouper submitted to different diets. A sample of fishes (5.56 ± 0.84 g and 7.1 ± 0.4 cm total length) were captured in the nature and distributed in 12 tanks (80 L, 15 fishes tank-1). They were fed with three different diets (diet 1 = commercial ration; diet 2 = mussel; and diet 3 = sardine) for 60 days. The variables of water quality (water temperature, oxygen level, total ammonia and salinity) were maintained inside ideals parameters for the species. No significant differences among the tested diets on the performance indicators (survival rate, specific-growth rate and daily growth rate) were found. Althougt diet 1 (commercial ration) provided similar performance as natural food. It's facility of supply, stockpiling and handling make it as the better choice for the growth of the studied species on the tested condictions.
Trein F.L.,Zenith Geoambiental Consultoria Ltda |
Lima L.P.,ICMBio |
Ulandowski L.K.A.,STCP Engineering de Projetos Ltda |
Morato S.A.A.,STCP Engineering de Projetos Ltda
Check List | Year: 2014
Pleurodema bibroni is a leiuperid frog known from open habitats in Uruguay and Southern Brazil. This paper provides the first record from state of Paraná, Brazil, and extends the distribution of the species approximately 250 km northwest from the nearest record. The specimen was found in Refúgio de Vida Silvestre dos Campos de Palmas, a federal reserve in southwestern Paraná state created to protect the grasslands, and represents an important record, since the species is considered to be Near Threatened according to IUCN criteria. © 2014 Check List and Authors.