Artigos Científicos - NUMA
URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/3274
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Navegando Artigos Científicos - NUMA por Afiliação "MANESCHY, R. Q. Universidade Federal do Pará"
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Item Acesso aberto (Open Access) Composição botânica na área de influência da copa de Spondias mombin L. disperso em pastagens no assentamento Belo Horizonte I, São Domingos do Araguaia-PA(Brazilian Journals Publicações de Periódicos e Editora Ltda, 2021-09) GUIMARÃES, Tatiane Pereira; MANESCHY, Rosana Quaresma; OLIVEIRA, Ilmaione Keisa de Souza; CASTRO, Albinei Araujo de; OLIVEIRA, Pâmela Dias de; COSTA, Karolinny Carneiro GuerraThe natural regeneration of tree species in pastures is of great importance for the diversification of the production system of family farmers, because it can be a sustainable alternative in the formation process of silvopastoral systems (SPS) of the type "dispersed trees in pasture". This study recorded the invasive tree species from under canopy the Spondias mombin L. and compared the richness and frequency of those species in open pastures. The work was carried out in a family farmers property the rural settlement "Belo Horizonte I", located in the municipality of São Domingos do Araguaia-PA. A pared design was used, with a 4m2 control plot in open pasture for each equally sized plot under the canopy of the yellow mombin. The taperebá canopy provided a microclimate favorable to natural regeneration of tree species: guava (Psidium guajava L.), bastard cedar (Guazuma ulmifolia Lamarck) and S. mombim. On open pasture area, outside the area of influence of canopy no tree species in young phase or seedlings were found. The maintenance of yellow mombin trees scattered in grazing areas is an appropriate strategy to accelerate the enrichment of natural vegetation in SPS.Item Acesso aberto (Open Access) Mitigação de impactos ambientais em assentamentos rurais: o papel da Universidade na construção do conhecimento agroecológico(Revistas Brasileiras Publicações de Periódicos e Editora Ltda., 2022-05) COSTA, Karolinny Carneiro Guerra; MANESCHY, Rosana Quaresma; QUEIROZ, Jaqueline Fontel de; MELLO, Andréa Hentz deThe objective was to systematize the agroecological practices designed and tested to mitigate environmental impacts in Southeast Pará, as well as the contribution of the Federal University of Pará in the construction of agroecological knowledge in the region. The research had a qualitative approach, based on the analysis of bibliographic and documentary material. It was found the existence of teaching, research and development activities using a participatory approach and/or action research methodology in rural settlements. Projects carried out in partnership with family farmers have designed local technical references, enabling the mitigation of environmental impacts and supporting the development of public policies suited to the reality of production systems in this social category.Item Acesso aberto (Open Access) Sequestro de carbono em sistemas silvipastoris de regeneração natural da agricultura familiar, São Domingos do Araguaia - PA(Brazilian Journals Publicações de Periódicos e Editora Ltda, 2021-09) GUIMARÃES, Tatiane Pereira; MANESCHY, Rosana Quaresma; OLIVEIRA, Ilmaione Keisa de Souza; CASTRO, Albinei Araujo de; OLIVEIRA, Pâmela Dias de; COSTA, Karolinny Carneiro GuerraThis research aimed to quantify the carbon stock of aboveground living vegetation in silvopastoral systems of natural regeneration practiced by family farmers in the settlement project Belo Horizonte II. The settlement is located in São Domingos do Araguaia – PA and the SSP managed from the natural regeneration of tree species constitutes an alternative for the integration of socioeconomic and environmental objectives, seeking sustainability for family farming in Southeast Pará. The biomass of the arboreal component was obtained from data from the field evaluation carried out in December 2009. The arboreal biomass per hectare was estimated from of calculation: BA = (ΣBA/1000) x (10000/plot area) and the carbon stock was estimated from ΔCBA = (BA x CF), where: ΔCBA = amount of carbon in aboveground living biomass (t C/ha); BA = aboveground living woody biomass (t DM/ha); CF = is the carbon fraction (t C /t MS) which, according to the IPCC (Intergovernmental Panel on Climate Change), defaults to 0.5. The carbon stock in the aboveground living biomass was 14.08 t C/ha, being 0.27 C t/ha and 13.81 t C/ha for the woody and non-tree vegetation biomass, respectively.