Navegando por Assunto "Alta Floresta (MT)"

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Acesso aberto (Open Access)
Comportamento e dieta de Chiropotes albinasus (I. Geoffroy & Deville, 1848) - cuxiú-de-nariz-vermelho
(Universidade Federal do Pará, 2013) SILVA, Rafaela Fátima Soares da; PERES, Carlos Augusto; http://lattes.cnpq.br/9267735737569372; VEIGA, Liza Maria; http://lattes.cnpq.br/4423233175920315
The red-nosed cuxiú, Chiropotes albinasus, is a poorly understood neotropical primate that is listed at ‘Threatened with Extinction’ by the IUCN. The current study was conducted on a group of C. albinasus at RPPN Cristalino, MT, Brazil. Activity budget, use of space and feeding ecology were studied using Simultaneous Scan methods. The study group was monitored for six months (two months in the rainy season, four in the dry season). The behavioural categories Moving, Feeing and Paused accounted for 81.17% of the activity records. Most activity was recorded in the middle strata of the forest (between 16 and 20m). Diet was principally frugivorous (82.52%), but invertebrates were also eaten. Representatives from some 18 plant families were consumed. Arrabidaea spp. and Brosimum latescens were the taxa most commonly consumed. During the dry season there was an increase in the consumption of such nonfruit items as invertebrates and flowers. Group size varied between 1 and 19 throughout the study. The sex-ration of groups also varied greatly. Parental care was observed by male C. albinasus, as well as interspeciic agonistic interactions between the cuxius and Ateles marginatus and between Sapajus apella.
Acesso aberto (Open Access)
Efeito da fragmentação florestal sobre a estrutura da comunidade de drosofilídeos (Diptera) no extremo sul da Amazônia
(Universidade Federal do Pará, 2005-02-28) SANTOS, Ronildon Miranda dos; MARTINS, Marlúcia Bonifácio; http://lattes.cnpq.br/8882047165338427
Ambient disturbances frequently produce changes in the structure of landscape and fauna diversity. Data about degradation's history, ambient structure and species have been collected in 30 forest fragments of different sizes in Alta Floresta and Apiacás towns, south of the Amazonia, to verify how Drosophilidae community answers to forest fragmentation. The results showed great heterogeneity between forest fragments; however diversity was similar between larger and best conserved and small with high degree of degradation. A total of 10.692 individuals of Drosophilidae, divided in 62 taxons, were collected. Relation between forest fragments size and species diversity was not observed. However, e opening of sub-forest was one of ambient variables that contributed the more to reduction of species diversity. Estimate of species richness for the region was around 100. The structure of abundance of communities was more similar between the forest fragments than species composition. About 34% of total richness was restricted to de forest edge and 19% to the center of the remnants; 47% of the species was common to both habitats. Some species of drosophilids answered to a distance gradient forest matrix-center. D. malerkoffiana, S. latifasciaefonnis and Z. indianus decreased their frequencies with the proximity of the center. On the other hand, the group willistoni increased in abundance. The main effect of the forest spalling on the community of drosophílids is the drastic alteration in species composition, with the matrix of the habitat being determinative in species composition of forest fragments.
Acesso aberto (Open Access)
Expansão da fronteira agropecuária do oeste paulista para a Amazônia: a trajetória das famílias Ometto e da Riva e a colonização do norte mato-grossense
(Universidade Federal do Pará, 2015) TAFNER JÚNIOR, Armando Wilson; SILVA, Fábio Carlos da; http://lattes.cnpq.br/3704903975084467
The expansion of the agricultural frontier towards West of Brazil, began with the its discovery in 1500. After the search for pau-brasil, was implanted by the Portuguese in the Northeast regionthe production of sugar derived from sugar cane. In the southeast region, how the production of cane sugar did not right, the occupation came through of the flags. The phenomenon continued westward with the discovery of gold and the capital accumulation arising of coffee. Later, about four and a half centuries after the discovery of Brazil, the federal government encouraged the occupation of the Amazon, first in Vargas, 1930, with the March to the West and in a second stage, already in the 1960s, with the tax incentive policy, coordinated by the military government and brokered by SUDAM, that privatized forests, delivering them to the capitalist South Central, especially the from São Paulo. One of these capitalists, pioneers in receiving tax incentives, was the Ometto family who set up an empire through sugarcane mills around the interior of São Paulo. The Ometto family was partner of Ariosto da Riva in the enterprise called Agropecuária Suiá-Missú S / A, located in the then district of São Félix do Araguaia, in the municipality of Barra do Garças. Ariosto daRiva sold his share to Ometto Group and acquired land to the north of Mato Grosso, promoting private colonization in the city he called Alta Floresta. In both cases, the conflict of interests between those who already were installed or came to install in the Amazon region later, with the of the capitalists who have to be the owners of the land, was inevitable. Social tensions occurred and lasted for decades, and developmentalism speech used to occupy the region promoted the unsustainability, making it happen impacts social, environmental and cultural difficult of being reversed.