Navegando por Assunto "Land use"

Agora exibindo 1 - 4 de 4

Acesso aberto (Open Access)
Dinâmicas territoriais, dendeicultura e produção de culturas alimentares: o caso do município de Moju, PA
(Universidade Federal do Pará, 2020-09-25) SANTOS, Cleison Bastos dos; NAHUM, João Santos; http://lattes.cnpq.br/9009465125001273
We have exposed in this work the doctorate thesis titled: LAND USE, OIL PALM FARMING AND PRODUCTION OF FOOD CROPS: An Analysis of Family Farmers Integrated with the Company Agropalma, in the municipality of Moju, PA, Brazil. We defend in the thesis that oil palm farming reduces food production in the locations where it is implemented. Our hypothesis is that this reduction occurs because the implementation of family agriculture projects with oil palm cultivation requires two essential resources: labor and land. In the specific case of pilot projects I (2002) and III (2005), integrated with the company Agropalma, the occupation of the area was different compared with the occupation of the area of project IV (2006). We aimed to analyze the impacts of oil palm farming expansion on food production by the family groups integrated with the productive chain of oil palm in the municipality of Moju. We wished, in this study, just as Nahum and Santos (2015), to geographically interpret the oil palm farming dynamics in the municipality of Moju starting at the category of used land (Santos; Silveira, 2001). We used, in this study, two methodologically complementary procedures: The analytical methodology based on the periodization and event concepts by Santos (2006) and Santos and Silveira (2001), which allowed us to think of a previous time (T1), the arrival of events (projects), and a period of time after the implementation of the projects (T2); and the operational methodology composed of literature review, cartographic surveys, structured and semi-structured interviews, and field work. The thesis is structured in three parts: In the first chapter, we analyze the land use by small family farmers prior to the arrival of family projects with oil palm crops. We used the peasant farm category by Woortmann (1983) to empirically show those dynamics. In those properties, land uses were subjected to different forms of work, solidarity bonds, and production systems. Their productions aimed at both consumption (use) and sale (exchange). In the second chapter, we show the events that shaped the family agriculture projects with oil palm farming in the Alto Moju and PA 150 regions, in the municipality of Moju. We analyzed, above all, the events that enabled the emergence of projects I (Arauaí I) and project II (Arauaí II), part of the Association of Community Development of the Arauaí Sector (Associação do Desenvolvimento Comunitário do Ramal do Arauaí - ASDECRA). In the third chapter, we analyze the transformations the process of integrating family projects to oil palm farming brought to land use, to the subjects, and to the production of food crops that fed the households and myriad remote homes.
Acesso aberto (Open Access)
Diversidade de insetos aquáticos em riachos urbanos: a importância de fragmentos florestais
(Universidade Federal do Pará, 2024-12-13) JORDAN BOUCHON, Yildiz Thais; BEASLEY, Colin Robert; http://lattes.cnpq.br/6310836748316181; HTTPS://ORCID.ORG/0000-0003-1413-1469; QUINTEIRO, Fábio Batagini; http://lattes.cnpq.br/1531054078905516
Urban expansion is a reality in the Amazon biome, which has transformed aquatic ecosystems, with a decrease in water quality and a reduction in the diversity of organisms. Groups of species, such as aquatic insects, can indicate the biotic condition of the ecosystem through the frequency and occurrence of taxa indicators. The environmental disturbances caused by urbanization can be detrimental to the survival of some sensitive aquatic insects in Amazon rivers. The aim of our study was to evaluate the environmental condition and diversity of aquatic insects in streams in secondary forest and urban streams in the municipality of Bragança, Pará, Brazil. Data on insect groups, environmental variables and levels of disturbance (using the Habitat Integrity Index, HII) were collected between October and December 2023. A total of 423 individuals were collected, 69 in the streams of the secondary forest and 354 in the urban streams, distributed in the orders Ephemeroptera, Trichoptera, Odonata, Diptera, Coleoptera and Hemiptera. Twenty-two families were recorded in urban streams and 12 families in the secondary forest. The patterns of abundance and richness showed a decrease as the months progressed in both environments. The BergerParker dominance index in both environments showed an increase as the months went by, indicating a change between the insect communities. On the other hand, the Margalef diversity index in both environments decreased over the months. According to the levels of environmental disturbance assessed, both environments were classified as “altered” (IIH<0.70) A positive association was demonstrated between the abundance of Hydropsychidae and the variables of electrical conductivity and total dissolved solids. Environmental variables such as electrical conductivity, total dissolved solids, phosphate and dissolved oxygen are associated with variation in the composition of aquatic insect groups. Strong relationships were recorded between the distribution of Gomphidae and phosphate concentrations. Corduliidae was related to total dissolved solids and electrical conductivity. Coenagrionidae and Caenidae showed positive responses to dissolved oxygen. The study showed a greater number of aquatic insect families in the area with strong anthropogenic pressure than in the secondary forest area, possibly due to a high diversity of microhabitats. In addition, urbanization factors could be negatively affecting both environments.
Acesso aberto (Open Access)
Impactos das mudanças de uso da terra nas áreas prioritárias para conservação da biodiversidade no nordeste do estado do Pará, Brasil
(Museu Paraense Emílio Goeldi, 2018-04) COELHO, Andréa dos Santos; TOLEDO, Peter Mann de; VIEIRA, Ima Célia Guimarães; LOPES, Luís Otávio do Canto; ADAMI, Marcos; GOMES, Alessandra Rodrigues; NARVAES, Igor da Silva
The Northeastern region of Pará (MNP) has 56.4% of its deforested territory. However, the region has great ecological importance, which can be demonstrated by the identification of 28 Priority Areas for Conservation (CPA) within the scope of the Project for the Conservation and Use of Brazilian Biological Diversity (PROBIO). The objective of this work was to identify and quantify the vegetation cover and land use in the MNP and compare it with the priority areas for biodiversity conservation. To fulfill the objectives, we used vector land use and land cover data with the APC and protected areas of the region. The results show that only 3% of the CPA are under some protection. Areas identified as ‘extremely high’ priority have already lost 55.6% of their original forest cover, while ‘very high’ priority areas have lost its original forest cover by 49%. It is essential to expand the environmental protection system in the region.
Acesso aberto (Open Access)
Viabilidade de estabelecimentos agrícolas da reforma agrária em áreas periurbanas no Município de Castanhal - Pará
(Universidade Federal do Pará, 2012-08-17) SILVA JÚNIOR, Bruno Ribeiro da; HERRERA, José Antonio; http://lattes.cnpq.br/3490178082968263; https://orcid.org/0000-0001-8249-5024; MARTINS, Paulo Fernando da Silva; http://lattes.cnpq.br/3223618156268542
The process of urbanization in rural areas grows throughout the world. In the Brazilian Amazon, the occurrence of this expansion process allows for increased economic performance of farms due to land use intensification and diversification of production in peri-urban settlements. The objective of the research was to evaluate the economic performance of farms, pondering the prospects of farmers as to stay in the Settlement Project Cupiúba. We sampled 30% of the settlers, which corresponds to 65 farms to survey data by applying semi-structured questionnaire. The data refer to various aspects of the characteristics of establishments, including family data, economic data, agricultural practices, hand labor, marketing, basic infrastructure and assets acquired. Data analysis was performed by comparing the average ANOVA - single factor analysis and correlation between variables with simple correlations. In the economic and financial aspects were investigated income-generating activities in agriculture and non-agricultural establishment. Based on the results analyzed, it appears that the establishments if enable the agricultural income while the Chiefs are young, and the receipt of retirement when they are in old age. The viability of agriculture is through the sale of plant products. Both intensification as diversification showed no clear effects on income. Establishments have economic viability and the vast majority is above the level of simple reproduction. The income, which allows the purchase of consumer goods, infrastructure and the proximity of the settlement urban center enable the well-being of families and contribute to the farmers remain in the settlement.