Avaliação da presença de espécies exóticas em unidades de conservação estaduais de Minas Gerais, Brasil

Substantial quantities solid waste from livestock are potential sources of nutrients for agroecological production on small-scale farms. The processes used to extract these wastes, however, must be capable of eliminating pathogenic microorganisms. We aimed to evaluate composting and vermicomposting processes by inoculating efficient microorganisms at the field scale. We used cattle and sheep manure with the inoculation of efficient microorganisms (EMs) at concentrations of 0, 2, and 4 mL L-1. In vermicomposting experiments, we added Lumbricus rubellus. After the maturation and stabilization phases of the compounds, concentrations of macronutrients, micronutrients, heavy metals, thermotolerant coliforms and Salmonella spp. were measured. We found that composting processes allowed high availability of macronutrients. Vermicomposting, associated with inoculation with 2 mL L-1 EMs, promoted the lowest concentration of thermotolerant coliforms, ensuring greater elimination of pathogens. The compost produced allowed the valuation of waste and use it as a quality organic fertilizer for agroecological production.

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Undesirable Neighbours: Eucalyptus and Protected Areas

Guzmán¹,

Drummond²,

Barreto³

2022

Protected Area Management - Recent Advances

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Eucalyptus is the common name of a set of exotic species present in the Brazilian territory. They have a strong invasive potential which is detrimental to the preservation of native floral formations, particularly in protected areas. This research seeks to (i) understand the stage of eucalyptus invasion in the Brasilia National Park; (ii) identify the main vectors of the invasive populations and (iii) verify the possible role of the adjoining Brasília National Forest in the invasion and (iv) consider possible conflicts between the roles of these two different categories of protected areas. A set of phytosociological sample areas were defined inside the park to pinpoint different eucalyptus populations. Findings indicate that eucalyptus populations inside the park behave invasively, having advanced 186.30 meters from their point of origin over the span of 45 years. Among the possible contamination vectors are a neighbouring nursery run by the local government and eucalyptus plantations in the adjoining Brasília National Forest. Results indicate the need for management actions to avoid continual seed dispersal by examined populations. They also indicate that the distinct conservation goals of national forests and national parks must be considered, especially when they are neighbours.

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Avaliação da presença de espécies exóticas em unidades de conservação estaduais de Minas Gerais, Brasil

Cited by 3 publications

References 8 publications

Current status of Brazilian scientific production on non-native species

Current status of Brazilian scientific production on non-native species

Increased quality of small-scale organic compost with the addition of efficient microorganisms

Undesirable Neighbours: Eucalyptus and Protected Areas

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