Brazilian Institute of Environment and Renewable Natural Resources

About: Brazilian Institute of Environment and Renewable Natural Resources is a government organization based out in Brasília, Brazil. It is known for research contribution in the topics: Population & Deforestation. The organization has 549 authors who have published 732 publications receiving 13999 citations. The organization is also known as: IBAMA.

Rendimento e composição química de carcaça da tartaruga-da-Amazônia ( Podocnemis expansa ) em sistema comercial

Abstract: Eight Podocnemis expansa commercial flocks, all of them located at the county of Diorama State of Goias, were monitored with the purpose of evaluating, the carcass yield parameters and chemical composition. The experiment was conducted upon animals with ages ranging from 23 to 29 months, whose performances were evaluated by taking their biometrical measures - the carapace rectilinear length in millimeters and the gain of weight in grams. It was also evaluated the carcass output and chemical composition. The comparison analysis were made using the Duncan's range test in addition to the analysis of the correlation between body weight and carcass output. The results have pointed out that the animals of 166.45 mm of mean rectilinear carapace length and 621.3 g of mean body weight obtained the following output mean values: carcass without viscera, 29.87%; carcass plus viscera, 46.71%; carcass plus carapace, 49.58%; fat, 5.00%; viscera, 16.76% and, liver, 2.90%. The meat mean protein corresponded to 17.38% in matter, and showed a low value for the ether extract (1.09%). A strong correlation between the body weight and the carcass output was observed (r = 0.97).

Comunidade de aves da Reserva Estadual de Gurjaú, Pernambuco, Brasil

Abstract: Estudos quali-quantitativos foram realizados em um fragmento florestal da Reserva Estadual de Gurjau, Cabo de Santo Agostinho, Pernambuco, Brasil. Foram registradas 220 especies de aves no levantamento qualitativo. Atraves da contagem por pontos, foram identificadas 175 especies em 6.470 contatos (270 amostras). A frequencia de ocorrencia de 75% foi registrada para 43 especies (19,6%); para a maioria das especies a frequencia de ocorrencia esteve abaixo de 25%.

Hawksbill turtles visit moustached barbers: cleaning symbiosis between eretmochelys imbricata and the shrimp stenopus hispidus

Abstract: At the oceanic island of Fernando de Noronha, off northeast Brazil, we recorded the hawksbill turtle (Eretmochelys imbricata) visiting cleaning stations tended by the barber pole shrimp (Stenopus hispidus). This seems to be the first record of cleaning symbiosis between marine turtles and shrimps. During their foraging on the reef flat, the turtles regularly visited and posed at the stations. The same stations were visited by a few species of reef fishes, which posed and were cleaned by the shrimps. We suggest that cleaning symbiosis between turtles and shrimps is widespread and went unrecognised due to the superficial resemblance between a resting turtle and a posing and cleaned one. Additionally, we submit a putative origin for the cleaning symbiosis between marine turtles and cleaner shrimps following a few simple behavioural steps.

Properties of oriented strandboard made of wood species from Brazilian planted forests: Part 1: 80 mm-long strands of Pinus taeda L.

Abstract: This research is part of a general study on the properties of oriented strandboard (OSB) using wood strands of species from Brazilian planted forests. The OSB industry is the latest wood related activity established in Brazil. In this particular part of the study, 80 mm long strands of Pinus taeda L. were bonded using two resin types (urea-formaldehyde and phenol-formaldehyde) at two levels of resin content (5% and 8%) to produce three-layer cross-aligned OSB to a face to core layer ratio of 1:2 and target density of 0.75 g/cm3. Physical and mechanical properties of the boards were evaluated according to ASTM standard D 1037-96a (1997) and the results compared to standards available as requirements for commercial structural panels. The results indicate that all the mechanical properties evaluated were above the requirements set forth by the Canadian standard CSA O437.0 (1993) for structural panels. The results of Janka hardness were in average 4 folds higher than the minimal requirements for Grade R-1 waferboard. Screw withdrawal values were also above the minimum required by grade M-3 of ANSI A208.1 standard (1993). Nevertheless, values of thickness swelling and water absorption were very high. The low dimensional stability may be related to the high density of the boards (“springback” effect) and also to the fact that no wax was used.