Conservação e recuperação da vegetação ripária na perspectiva de pequenos agricultores

Much of the riparian formations in southern Brazil was eliminated, and those that remain are degraded and fragmented. Aiming to verify the viewpoint of the farms of small portions of land for preservation and restoration of riparian ecosystem and as such position may interfere with the conservation and recovery of the same, interviews were conducted with a group of small farmers occupying watershed stream Ajuricaba in the municipality of Marechal Cândido Rondon - PR. We performed an informal approach with the aid of a script of open questions, seeking to characterize the socioeconomic profile of respondents and outline the concepts and opinions forward the conservation and restoration of riparian vegetation. The results were analyzed according to quantitative and qualitative approaches. Farmers interviewed are willing to restore riparian vegetation to their property, but for that to happen they need an incentive, this may be financial, manpower or equipment needed.Grande parte das formações ripárias no sul do Brasil foi eliminada, e as que restam estão degradadas e fragmentadas. Com o objetivo de verificar qual o ponto de vista dos proprietários de pequenas áreas de terra, quanto à conservação e recuperação da vegetação ripária e como tal posição pode interferir na conservação e recuperação do mesmo, foram realizadas entrevistas com um grupo de pequenos agricultores que ocupa a microbacia do córrego Ajuricaba, no município de Marechal Cândido Rondon – PR. Foi realizada uma abordagem informal com auxílio de um roteiro de questões abertas, buscando caracterizar o perfil socioeconômico dos entrevistados e delinear seus conceitos e opiniões frente a conservação e recuperação da vegetação ripária. Os resultados obtidos foram analisados de acordo com abordagens quanti-qualitativas. Os agricultores entrevistados estão dispostos a recuperar a vegetação ripária de suas propriedades, mas para que isso aconteça é necessário um incentivo, este pode ser financeiro, mão-de-obra ou materiais necessários

<b>Soil seed bank during succession at an abandoned pasture in the upper Paraná river-floodplain, Brazil</b> - doi: 10.4025/actascibiolsci.v33i1.6391 <b>Soil seed bank during succession at an abandoned pasture in the upper Paraná river-floodplain, Brazil</b> - doi: 10.4025/actascibiolsci.v33i1.6391

We evaluated density and species composition of the soil seed bank in active pasture and in secondary forest on a 10 year-old abandoned pasture to identify changes in density, richness, diversity and species composition during secondary succession of abandoned pastures. The implications of those changes for the forest recovery process were also considered. Soil samples were collected at Porto Rico island, state of Paraná, in 2007. The seedling emergence method was used. Data on active pasture collected in 1996, published by Campos and Souza (2003) were used for comparative analysis. No evidence was found of a pattern of changes in density of the soil seed bank during succession of abandoned pastures. We observed increases in richness and diversity, in the contribution of tree and shrub species and dominance of herb species for the seed bank during the first 10 years of abandonment of pastures in riparian forests. At the end of succession, the soil used as pasture can result in systems that are different from the original environment, due to seed bank impoverishment and presence of exotic species.<br>We evaluated density and species composition of the soil seed bank in active pasture and in secondary forest on a 10 year-old abandoned pasture to identify changes in density, richness, diversity and species composition during secondary succession of abandoned pastures. The implications of those changes for the forest recovery process were also considered. Soil samples were collected at Porto Rico island, state of Paraná, in 2007. The seedling emergence method was used. Data on active pasture collected in 1996, published by Campos and Souza (2003) were used for comparative analysis. No evidence was found of a pattern of changes in density of the soil seed bank during succession of abandoned pastures. We observed increases in richness and diversity, in the contribution of tree and shrub species and dominance of herb species for the seed bank during the first 10 years of abandonment of pastures in riparian forests. At the end of succession, the soil used as pasture can result in systems that are different from the original environment, due to seed bank impoverishment and presence of exotic species