Navegando por Assunto "Floresta de várzea"

Agora exibindo 1 - 7 de 7

Acesso aberto (Open Access)
Análise etnoecológica da floresta de várzea da ilha de Sororoca, Ananindeua, Pará, Brasil
(Universidade Federal do Pará, 2010-03-16) ALMEIDA, Adrielson Furtado; JARDIM, Mário Augusto Gonçalves; http://lattes.cnpq.br/9596100367613471
Was analyzed ethnoecology aspects of the tree species in 2 ha of floodplain forest on the island of Sororoca, municipality of Ananindeua, state of Pará. The floristic was assessed through floristic inventory in eight plots of 50 x 50 m, which were measured all trees with diameter at breast height (DBH) ≥10 cm to 1.30 m and calculated the relative density, relative frequency, relative dominance value indices of importance and coverage. Information on the use, management and season of use were obtained through interviews with local residents. The results showed 3.054 individuals in 20 families, 47 genera and 53 species. Fabaceae and Arecaceae stood out with the greatest number of species. Euterpe oleracea represented 69.01% of the individuals identified, with the largest number of individuals, relative dominance, importance value index and value index coverage. The main use of 49 species concentrated on the craft category. The months January to April amounted to the time of use and management of the species coincides with the rainy season the level of precipitation and relative humidity higher.
Acesso aberto (Open Access)
Análise multitemporal da sustentabilidade de uma comunidade extrativista no estuário amazônico
(Universidade Federal do Pará, 2022-04-08) NASCIMENTO, Thaylana Pires do; CATTANIO, José Henrique; http://lattes.cnpq.br/1518769773387350; https://orcid.org/0000-0001-8335-9593
Among the existing ecosystems in the Amazon biome, there are the floodplains (dense alluvial ombrophilous forest known as the estuary floodplain forest), where traditional communities, such as indigenous peoples, quilombo community, rubber tappers, chestnut trees, babassu coconut breakers and the riverside. The main economic activities carried out in these floodplain forests are extractivism, mainly the collection of açaí fruits, the extraction of palm hearts and wood, artisanal fishing, and shrimp capture. The objective of this research was to evaluate the changes in relation to the sustainable use of the Environmental Protection Area of Ilha do Combú (APA Ilha do Combú), relating the current economy from non-timber forest products, with the economic strategies used by the riverside people in a time frame of 30 years. The methodology used was field research based on interviews with the application of semi-structured questionnaires in 10 key families. The benefits and disadvantages of creating the APA Ilha do Combú were raised, where the increase in the number of bars and restaurants seems to be going against the wishes of the local population. It was confirmed the hypothesis that the intensification of açaí management on the properties resulted increase in the profitability of the inhabitants of the Island in relation to what was achieved in 1990. However, this factor results in a greater dependence on this product to the detriment of other NTFPs listed in 1990.
Acesso aberto (Open Access)
Caracterização e dinâmica espacial da caça de primatas em comunidades ribeirinhas da Amazônia Central
(Universidade Federal do Pará, 2015) PEREIRA, Priscila Maria; VALSECCHI, João; http://lattes.cnpq.br/8353254163114394; QUEIROZ, Helder Lima de; http://lattes.cnpq.br/3131281054700225
Acesso aberto (Open Access)
Estudo comparativo de comunidades de briófitas sujeitas a diferentes graus de inundação no município de São Domingos do Capim, PA, Brasil
(Universidade Federal do Pará, 2016-06) LOPES, Moisés Oliveira; SILVA, Marcio Roberto Pietrobom da; CARMO, Dimas Marchi do; PERALTA, Denilson Fernandes
(Comparative study of communities of bryophytes in different degrees of flooding in the municipality of São Domingos do Capim, Pará State, Brazil). Third-five transects were analyzed (10 × 10 m) for the floristic survey and eighteen transects (six for each vegetation type: Igapó Forest (IG), Várzea Forest (VA), and Terra Firme Forest (TE)) were randomly analyzed in order to compare the bryophyte communities. We found 118 species: 37 mosses and 82 liverworts Lejeuneaceae (63 species) was the richest among the liverwort families to liverworts and Calymperaceae (eight species) among mosses. The estimated species richness was lower than expected, but the collector’s curve was stabilized. The most colonized substrate was live bark (101 spp., 45 exclusive) followed by decomposing bark (66 spp., 16 exclusive). The results show that the vegetation types analyzed have has differences in bryophyte community richness (IG > TF > VA) and composition, due to the occurrence of exclusive species. The cluster (UPGMA) and ordination (NMDS) analyses indicated the presence of community structure among the three phytophysiognomy.
Acesso aberto (Open Access)
A inundação sazonal e a topografia como indicadoras ambientais da regeneração natural em uma floresta ombrófila densa aluvial na Amazônia Oriental
(Universidade Federal do Pará, 2016-01-13) SILVA, Julie Andrews de França e; JARDIM, Mário Augusto Gonçalves; http://lattes.cnpq.br/9596100367613471
The objective of the research was to evaluate the effects of seasonal flooding and topography in the floristic composition, structure and life form of the natural regeneration in a alluvial dense rain forest in the eastern Amazon. The Environmental Protection Area, Combu Island, were installed four permanent plots of 20 x 20 m, divided into subplots of 1 x 1 m, Between the months of december/2014 to july/2015 all the species and their individuals were identified, quantified, grouped into size categories (CT): CT1= height < 15 cm; CT2= 15,1 < height < 30 cm; CT3= 30,1 < height < 1 m) and subsequently classified according to the life form. The phytosociological parameters calculated were density and relative frequency category of relative size, relative natural regeneration and diversity. Floristic similarity of the plots were performed by the Bray-Curtis index and the dendogram by UPGMA using the statistical Program R 3.1.1. In each plot were set five sticks 1.5 m for the dayle monitoring of the water level in two periods, the rainy season (february to april/2015) and less rainy season (may to july/2015). They were recorded in the rayne season 10,217 individuals, 30 families, 49 genera and 63 species, with an average of flood of 2.88 cm; the less rainy period with 10,124 individuals, 29 families, 46 genera and 59 species did not occur flood in the plots. In both periods, the floristic composition was similar, with no significant difference. Species like Pariana campestris, Anthurius sinuatum, Costus spicatus and Costus arabicus were the most representative, proving to be tailored to the two seasonal periods. The life form tree was dominant in number of species and the herbaceous life form in individuals. The CT1 presented to fewer individuals, unlike CT2. Thus, tide levels did not affect the natural regeneration, indicating species survival between periods. The topographic analysis was performed with the aid of a geodetic GPS Garmim GPS Map, 62s model, by collecting of 20 points of altitude in the four plots. The variation of topography influenced the number of families, genera and species, where the highest plots showed the highest values of families, genera and species. In many species, the life form predominant was tree and herbaceous in individuals. Pariana campestris and Anthurium sinuatum were dominant in all plots, indicating that not influenced by the change in altitude.
Acesso aberto (Open Access)
Padrão de distribuição de assembléias de aves nas florestas de várzea do rio Madeira
(Universidade Federal do Pará, 2014) SILVA, Bianca Darski; SANTOS, Marcos Pérsio Dantas; http://lattes.cnpq.br/7941154223198901
Acesso aberto (Open Access)
Recuperação florestal em açaizais de várzea submetidos ao manejo intensivo no estuário amazônico
(Universidade Federal do Pará, 2018-04-20) CARVALHO, Rosileia da Costa; ALVES, Lívia de Freitas Navegantes; http://lattes.cnpq.br/1337509239539346
Forest recovery has been a strategy used by riverside of the Amazonian estuary to recover forests heavily anthropized by the intensive exploitation of açaizais. In this work we seek to identify and analyze the emergence of these forest recovery experiences in the municipality of Abaetetuba. In order to study forest recovery in floodplain areas it was necessary to zonate these experiences, which resulted in 38 experiences identified and distributed in the floodplain region. Identifying its characteristics and nature, thus realizing a typology, which composes the first article of this work. In the second article we focus on analyzing the trajectories of these experiences, starting from a detailed study of an establishment for each type found, understanding the decisive historical factors for the differentiation of trajectories, we also analyze the logics of changes of the practices in the management of açaizais, which sometimes occurs the confluence of several logics, triggered by the riverside for decision making. For that it was necessary to conduct retrospective interviews with the families chosen for the detailed study, totalizing 4 families. We also sought to identify the factors that influenced the conformation of the scenario of forest recovery experiences, among them the allocation of credits to encourage the recovery of forest diversity. In the third and last article we seek to understand how the experiences of forest recovery in the areas of açaizais have reflected in the knowledge and practices of the riverside. We find a variety of strategies used in the management of açaizais that incorporate different levels of knowledge, external variables such as the market and technical assistance influence the changes of these practices and knowledge. We find that not always change of knowledge represents practical changes, since the riverine may not have the resources to carry them out. And that the productive strategies can be constituted of traditional knowledge, as well as of new knowledge.