Human influences on the present denudation rates of the Paulista Peripheral Depression, Brazil
Influências humanas nas taxas atuais de denudação da Depressão Periférica Paulista, Brasil ABSTRACT Chemical weathering and soil erosion in large or small watersheds are used to understand the effect of evolution processes on the Earth’s surface and climate. Currently, human-driven land use changes have substantial effects on landscape changes over a range of temporal and […]
An applied ecological approach for the assessment of anthropogenic disturbances in urban wetlands and the contributor river
Uma abordagem ecológica aplicada para a avaliação de perturbações antropogénicas em zonas húmidas urbanas e no rio contribuinte ABSTRACT An applied ecological approach was used to assess the anthropogenic disturbances on the aquatic systems of the Sorocaba river and its wetlands in the Sorocaba-SP municipality (Southeastern Brazil). Two samplings of water, sediment, macroinvertebrates, and macrophytes […]
Review of environmental metrics used across multiple sectors and geographies to evaluate the effects of hydropower development
Revisão de métricas ambientais usadas em vários setores e geografias para avaliar os efeitos do desenvolvimento de energia hidrelétrica Introduction The United States of America (U.S.) has a need for renewable and sustainable energy resources that can keep pace with increasing energy demands while minimizing adverse impacts to the environment and preserving quality of life […]
Impact of copper sulfate application at an urban Brazilian reservoir: A geostatistical and ecotoxicological approach
Impacto da aplicação de sulfato de cobre em um reservatório urbano brasileiro: uma abordagem geoestatística e ecotoxicológica ABSTRACT A landscape ecotoxicology approach was used to assess the spatial distribution of copper in the recent bottom sediment (surficial sediment) of a Brazilian subtropical reservoir (theGuarapiranga reservoir) and its potential ecotoxicological impacts on the reservoir ecosystem and […]
Effects of land use and land cover on water quality of low-order streams in Southeastern Brazil: Watershed versus riparian zone
Efeitos do uso e cobertura do solo na qualidade da água de riachos de baixa ordem no sudeste do Brasil: bacia hidrográfica versus zona ribeirinha ABSTRACT Land-use/land-cover (LULC) pattern influences water quality, however, this relation may be different for various spatial scales. We evaluated the LULC effects on water quality of tropical low-order streams, comparing […]
Chemical weathering rates and atmospheric/soil CO2 consumption of igneous and metamorphic rocks under tropical climate in southeastern Brazil
Taxas de intemperismo químico e consumo de CO2 atmosférico/do solo em rochas ígneas e metamórficas sob clima tropical no sudeste do Brasil. ABSTRACT Chemical weathering rates and atmosphere/soil CO2 consumption of igneous and metamorphic rocks under tropical climate in southeastern Brazil were evaluated using the chemical composition of surface waters and fresh rocks and soil […]
Carrying capacity using emergy and a new calculation of the ecological footprint
Capacidade de suporte usando emergia e um novo cálculo da pegada ecológica ABSTRACT Carrying capacity was evaluated using emergy assessment to improve the diagnosis of problems and tomake understanding sustainability easier, thereby supporting the formulation of public policies. IbiúnaCounty has an area of 105,800 hectare (ha) and it is located 72 km west of São […]
Explorando os sistemas de produção hortícola sustentável usando a avaliação emergética para restaurar a sustentabilidade regional (2014)
Exploring the sustainable horticulture productions systems using the emergy assessment to restore the regional sustainability Elisa Sayoko Nakajima e Enrique Ortega RESUMO Este artigo mostra o comportamento ambiental de diferentes sistemas de produção hortícola. A avaliação emergética foi aplicada para a análise de três fazendas hortícolas familiares localizadas no Condado de Ibiúna e um subsistema hortícola da Ecovila […]
Organic farm does not improve neither soil, or water quality in rural watersheds from southeastern Brazil
Agricultura orgânica não melhora a qualidade do solo nem da água em bacias hidrográficas rurais do sudeste do Brasil ABSTRACT This study was conducted in a rural region where there are conventional and organic farms, the agricultural production includes more than 20 million people, and the effect on environmental quality is still poorly known in […]
A trophic state index for tropical/subtropical reservoirs (TSItsr)
Um índice de estado trófico para reservatórios tropicais/subtropicais (TSItsr ) ABSTRACT Trophic state is an important property of the aquatic ecosystems as it reflects the anthropogenic influence on water quality and the ecological functioning of rivers, lakes and reservoirs. Trophic state indexes provide an insight on how nutrient and light availability controls phytoplankton development. We analyzed […]