Vereda and Murundu wetlands and changes in Brazilian environmental laws: challenges to conservation

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Identifying barriers and opportunities for transitions towards more sustainable agriculture through system analysis: the case of Vereda La Hoya, Colombia

The paper presents the results of studies which investigated farmers’ reasoning and behaviour with regards to the mis‐use of personal protective equipment and pesticide among smallholders in Colombia. First, the research approach is described. In particular, the structured mental models approach and the integrative agent‐centred framework are presented. These approaches permit to understand the farmers’ reasoning and behaviour in a system perspective. Second, the results are summarized. The methods adopted allowed not only for identifying the factors, but also the social dynamics influencing farmers. Finally, suggestions for interventions are provided, which are not limited to a technical fix, but address the underlying social causes of the problem.

Modelo de desarrollo productivo para los pequeños y medianos productores de papa del municipio de Sesquilé en la vereda Rancherías

Este es un proyecto que se viene desarrollando hace unos años conjuntamente entre la Universidad del Rosario y la Gobernación de Cundinamarca, en donde se busca principalmente la mejora en la productividad de los campesinos de la región, específicamente el municipio de Sesquilé, vereda Ranchería, de manera que puedan mejorar su calidad de vida.

Vereda Crucero Puelenje: interfaz periurbana ante a urbanização em Popayán, Colombia

This article is the result of a work of research conducted on the peri-urban interface of Popayan to detect its potential, restrictions and pathologies regarding the urbanization process. The Crucero Puelenje village, taken as a case study, is located in the south of the town center and it is recognized as one of the agricultural pantries of the city.The territory reading was focused on the macro-landscape as a result of the relationship between social groups and their physical and natural environment. Hence, this research process articulated technical and participatory methodologies that allowed determining the socio-cultural, environmental, physical-spatial, economic and political-administrative particularities of the territory with respect to urbanization and local development. Thus, the participatory component with the Crucero Puelenje community, both in the participatory workshops and in the census, gave feedback to the technical component considered as the guiding thread.This research found knowledge applicable to spatial planning and regional development from the study of the socio-environmental and territorial transformations impact caused by the urban sprawl of Popayán, and at the same time, it offered the Crucero Puelenje community the possibility of interpreting its territory and gaining insights about its planning.

Plan exportador en los sistemas semi-estabulado de ganado de carne bovino en productores de la vereda el guayabo - Pto. Salgar, Cundinamarca.

Este proyecto busca analizar y brindar las herramientas necesarias para poder exportar carne de calidad bajo un plan detallado de diagnostico en la zona a impactar en armonía con el medio ambiente. Básicamente, se trata de entender que la finca se debe manejar como una empresa agro-ganadera. El reto que tiene el gremio de los Agro-ganaderos está en crear, desarrollar y aplicar verdaderos proyectos de vida que sean productivos en las empresas ganaderas. Debemos empezar a utilizar los beneficios de los nuevos conceptos, tecnologías e investigaciones, para afrontar los retos que se imponen con los Tratados de Libre Comercio con otros países. La empresa Plus Agrícola S.A.S., quiere que estos conceptos, conocimientos, tecnologías e investigaciones lleguen a los pequeños y medianos productores de muchas zonas del país que como consecuencia de numerosos obstáculos e intereses de federaciones, no han podido acceder a capacitaciones que les permitan convertirse en verdaderos empresarios ganaderos. Plus Agrícola S.A.S., quiere proporcionar elementos de cambio que permitan dar un giro de 360 grados a estos productores pues estamos convencidos que el futuro de la ganadería en Colombia está en sistemas semi-estabulados y estabulados con confort, tanto en producción de carne y leche que permitan cambiar esa idea que de generación en generación hemos aplicado, como es sacar nuestros bovinos a pastorear en pasturas degradadas y pobres en alimento.

Cuando creces, yo crezco contigo”: La configuración de áreas de protección ambiental y de subjetividades en el Humedal de Córdoba y la vereda El Verjón Bajo

La configuración de lugares como áreas de protección ambiental puede ser vista como un proceso técnico y objetivo, en el que se crean políticas públicas que definen prácticas adecuadas e inadecuadas en el lugar. Pero esta configuración es un proceso histórico y negociado. Este se construye en contante diálogo entre diferentes actores que se preocupan por definir qué es la naturaleza y el cuidado ambiental, y las percepciones que individuos que habitan en o cerca a estos lugares construyen en su diario vivir. Es así como la configuración socioambiental de lugares como áreas de protección ocurre por transformaciones en la forma de percibir un lugar, la relaciones con este y sobre todo, prácticas y relaciones que se traducen en formas de negociar nociones de naturaleza y cuidado ambiental. Esta negociación tiene grandes implicaciones en los individuos, particularmente en su subjetividad. Es decir, en hechos como la forma de nombrarlo, caminarlo, observar las especies, iniciar proyectos de agricultura orgánica, cambiar prácticas productivas, el cerramiento de zonas para proteger las fuentes de agua o zonas de vegetación. También sobre su subjetividad, la manera como se sienten frente al lugar, como juzgan sus acciones y las de otros y cómo construyen objetivos personales con respecto a la idea de cuidado ambiental.

Simulating human and environmental exposure from hand-held knapsack pesticide application: Be-WetSpa-Pest, an integrative, spatially explicit modeling approach

This paper presents an integrative and spatially explicit modeling approach for analyzing human and environmental exposure from pesticide application of smallholders in the potato producing Andean region in Colombia. The modeling approach fulfills the following criteria: (i) it includes environmental and human compartments; (ii) it contains a behavioral decision-making model for estimating the effect of policies on pesticide flows to humans and the environment; (iii) it is spatially explicit; and (iv) it is modular and easily expandable to include additional modules, crops or technologies. The model was calibrated and validated for the Vereda La Hoya and was used to explore the effect of different policy measures in the region. The model has moderate data requirements and can be adapted relatively easy to other regions in developing countries with similar conditions.

A Marmota na Corte: recreação e vereda literária no cenário cultural do século XIX (1849-1852)

Pós-graduação em Letras - FCLAS

Estudo ecossistêmico em uma vereda na região de Três Marias: com base em indicadores limnológicos e ecomorfológicos

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Cold vapour generation electrothermal atomic absorption spectrometry and solid phase extraction based on a new nanosorbent for sensitive HG determination in environmental samples (sea water and river water)

Mercury is not an essential element for plant or animal life and it is a potential environmental toxic because of its tendency to form covalent bonds with organic molecules and the high stability of the Hg-C bond. Reports estimate a total mercury concentration in natural waters ranging from 0.2 to 100 ng L-1. Due to this fact, highly sensitive methods are required for direct determination of such extremely low levels. In this work, a rapid and simple method was developed for separation and preconcentration of mercury by flow injection solid phase extraction coupled with on-line chemical vapour generation electrothermal atomic absorption spectrometry. The system is based on chelating retention of the analyte onto the mini column filled with a mesoporous silica functionalized with 1,5 bis (di-2-pyridyl) methylene thiocarbohydrazide. The main aim of this work was to develop a precise and accurate method for the determination of the Hg. Under the optima conditions and 120 s preconcentration time, the detection limit obtained was 0.009 μg L-1, with RSDs 3.7 % for 0.2 μg L-1, 4.8 % for 1 μg L-1 and enrichment factor 4, Furthermore, the method proposed has permitted the determination of Hg with a reduction in the analysis time, the sample throughput was about 18 h-1, low consumption of reagents and sample volume. The method was applied to the determination of Hg in sea water and river water. For the quality control of the analytical performance and the validation of the newly developed method, the analysis of two certified samples, TMDA 54.4 Fortified Lake, and LGC6187 River sediment was addressed. The results showed good agreement with the certified values.