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25
A revisit to the impact of land use changes on the human well-being via altering the ecosystem provisioning services,”
- Advances in Meteorology,
, 2013
"... It is widely acknowledged that land use changes (LUC) associated with climate variations are affecting the human wellbeing. This paper conducted a revisit to relevant researches on the impacts of LUC on human wellbeing via specifically altering the ecosystem provisioning services. First, the explor ..."
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It is widely acknowledged that land use changes (LUC) associated with climate variations are affecting the human wellbeing. This paper conducted a revisit to relevant researches on the impacts of LUC on human wellbeing via specifically altering the ecosystem provisioning services. First, the explorations on the influences of LUC on ecosystem provisioning services were reviewed, including the researches on the influences of LUC on agroecosystem services and forest and/or grassland ecosystem services. Then the quantitative identification of the impacts of LUC on ecosystem provisioning services was commented on. In the light of enhanced observation and valuation methods, several approaches to ecosystem services and improved models for assessing those ecosystem services were assessed. The major indicators used to uncover the influences of LUC on human wellbeing were summarized including the increase of inputs and the reduction of outputs in production and the augmented health risk induced by the irrational land uses. Finally, this paper uncovered the research gaps and proposed several research directions to address these gaps.
An Assessment of Non-Apis Bees as Fruit and Vegetable Crop Pollinators
, 2011
"... Declines in pollinators around the globe, notably the loss of honey bees (Apis mellifera L.) to Colony Collapse Disorder, coupled with a dearth of quantitative data on non-Apis bee pollinators, led to this dissertation research, which documents the role of non-Apis bees in crop pollination in southw ..."
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Declines in pollinators around the globe, notably the loss of honey bees (Apis mellifera L.) to Colony Collapse Disorder, coupled with a dearth of quantitative data on non-Apis bee pollinators, led to this dissertation research, which documents the role of non-Apis bees in crop pollination in southwest Virginia. Major findings of this first study of its kind in the region were that non-Apis bees provided the majority of pollination—measured by visitation—for several economically important entomophilous crops (apple, blueberry, caneberry, and cucurbits); diverse bee populations may be helping to stabilize pollination service (105 species on crop flowers); landscape factors were better predictors of non-Apis crop pollination service than farm management factors or overall bee diversity; and non-Apis bees in the genera Andrena, Bombus, and Osmia were as constant as honey bees when foraging on apple. Non-Apis, primarily native, bees made up between 68 % (in caneberries) and 83 % (in cucurbits) of bees observed visiting crop flowers. While 37–59 species visited crop flowers, there was low correspondence between bee communities across or within crop systems (“within crop ” Jaccard similarity indices for richness ranged from 0.12–0.28). Bee community diversity
Evaluation of the Level and Impact of Selected Physiochemical Parameters of
, 2014
"... This work quantitatively evaluates the level and impact of selected physiochemical properties of fertilizer effluent on the Obinna River of Adani, Enugu State, Nigeria. The fertilizer effluent origi-nated from surrounding farms and flushed into the Obinna River. Water samples were collected from des ..."
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This work quantitatively evaluates the level and impact of selected physiochemical properties of fertilizer effluent on the Obinna River of Adani, Enugu State, Nigeria. The fertilizer effluent origi-nated from surrounding farms and flushed into the Obinna River. Water samples were collected from designated points along the river and analysed for physical, chemical and biological proper-ties using standard methods of APHA. Impact of selected key parameters such as nitrate, phos-phate, manganese, dissolved oxygen, biochemical oxygen demand and heavy metals (lead, iron and manganese), was studied. The results of the parameters were compared with the World Health Organisation (WHO) permissible standard for freshwater. Measured concentrations of phosphate (5.00, 7.21, 3.92 mg/L), manganese (1.53, 1.18, 1.47 mg/L) and lead (18.9, 21.7, 39.7 ppm) were found to be above the WHO standard while nitrate (0.04, 0.03, 0.03 mg/L) and iron (0.001, 0.001, 0.1 mg/L) were within the standard. The mean concentrations of heavy metals in-creased in the following order: Fe (0.034) < Mn (1.4) < Pb (26.8) from upstream S1 to downstream
WATER-RELATED ECOSYSTEM SERVICES AND WATER QUALITY: FARMERS ’ PERCEPTIONS AND PRACTICES
, 2014
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Productivity Stability Adaptability Equity
, 2011
"... An integrated sustainability assessment of mediterranean sheep farms with different degrees of intensification ..."
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An integrated sustainability assessment of mediterranean sheep farms with different degrees of intensification
An approach to assess the potential of agroecosystems in providing environmental services
, 2016
"... Abstract -The objective of this work was to present an approach to evaluate soil functions in agroecosystems and their impact on environmental services (ES). An approach with case studies was proposed to assess the relationship between the establishment and management of agroecosystems, in three Br ..."
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Abstract -The objective of this work was to present an approach to evaluate soil functions in agroecosystems and their impact on environmental services (ES). An approach with case studies was proposed to assess the relationship between the establishment and management of agroecosystems, in three Brazilian biomes (Atlantic Forest, Cerrado, and Caatinga), and their environmental services provision, considering the specificities of each area. A set of soil parameters that can be used as indicators to monitor changes in the agroecosystem was also proposed. The environmental services types most affected by the establishment and management of the agroecosystems were the supporting and provisioning services, showing the potential of agricultural management in providing multiple services, besides food, fiber, and energy. "No fire use" and "agricultural consortium" were the criteria for the establishment and management of agroecosystems with greater potential to increase environmental services provision, whereas biomass stock in soil and litter was the most appropriate soil parameter to be used as an indicator to monitor the impact of agroecosystems in environmental services provision. Index terms: environmental services indicators, multifunctional agriculture, public policies, soil management, sustainable agriculture. Uma abordagem para avaliar o potencial de agroecossistemas em prover serviços ambientais Resumo -O objetivo deste trabalho foi apresentar uma abordagem para avaliar as funções do solo em agroecossistemas e seus impactos sobre os serviços ambientais (SA). Uma abordagem com estudo de casos foi proposta para analisar a relação entre o estabelecimento e o manejo de agroecossistemas, em três biomas brasileiros (Floresta Atlântica, Cerrado e Caatinga), e a sua correlação com a prestação de serviços ambientais, tendo-se levado em consideração as especificidades de cada área. Também foi proposto um conjunto de parâmetros do solo que possam ser utilizados como indicadores para monitorar as alterações no agroecossistema. Observou-se que os tipos de serviços ambientais mais afetados pela implantação e pela gestão dos agroecossistemas são os de suporte e provisão, o que mostra o potencial que o manejo agrícola tem de fornecer múltiplos serviços, além de alimentos, fibras e energia. "Sem uso de fogo" e "consórcios agrícolas" foram os critérios usados na implantação e a gestão de agroecossistemas com maior potencial em aumentar a prestação de serviços ambientais, enquanto o estoque de biomassa no solo e na serapilheira foi o parâmetro do solo mais adequado para uso como indicador no monitoramento do impacto do agroecossistema na prestação de serviços ambientais. Termos para indexação: indicadores de serviços ambientais, agricultura multifuncional, políticas públicas, manejo do solo, agricultura sustentável.