Spencer, Benjamin; Lawler, Josh; Lowe, Celia; Thompson, Luanne; Hinckley, Tom; Kim, Soo-hyung; Bolton, Susan; Meschke, Scott; Olden, Julian D.; Voss, Joachim. (2017). Case Studies in Co-Benefits Approaches to Climate Change Mitigation and Adaptation. Journal Of Environmental Planning & Management, 60(4), 647 – 667.
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Abstract
Attempts to mitigate greenhouse gas emissions or manage the effects of climate change traditionally focus on management or policy options that promote single outcomes (e.g., either benefiting ecosystems or human health and well-being). In contrast, co-benefits approaches to climate change mitigation and adaptation address climate change impacts on human and ecological health in tandem and on a variety of spatial and temporal scales. The article engages the concept of co-benefits through four case studies. The case studies emphasize co-benefits approaches that are accessible and tractable in countries with human populations that are particularly vulnerable to climate change impacts. They illustrate the potential of co-benefits approaches and provide a platform for further discussion of several interdependent principles relevant to the implementation of co-benefits strategies. These principles include providing incentives across multiple scales and time frames, promoting long-term integrated impact assessment, and fostering multidimensional communication networks.
Keywords
Greenhouse Gas Mitigation; Air Pollution Control; Climate Change; Environmental Health; Ecological Impact; Management; Ecological Health; Human Health; Impact Assessment; Incentives; Multidimensional Networks; Health; Impacts; Drought; Perspective; Strategies; Mangroves; Science; Risks; Ecosystems; Platform; Implementation; Networks; Social Welfare; Environmental Policy; Case Studies; Greenhouse Effect; Impact Tests; Communication Networks; Environmental Changes; Greenhouse Gases; Human Populations; Spatial Discrimination; Adaptation; Climate Effects; Mitigation; Environmental Impact; Health Care Policy
Korn, Abigail; Bolton, Susan M.; Spencer, Benjamin; Alarcon, Jorge A.; Andrews, Leann; Voss, Joachim G. (2018). Physical and Mental Health Impacts of Household Gardens in an Urban Slum in Lima, Peru. International Journal Of Environmental Research And Public Health, 15(8).
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Abstract
Rural poverty and lack of access to education has led to urban migration and fed the constant growth of urban slums in Lima, Peru. Inhabitants of these informal settlements lack land rights and access to a public water supply, resulting in poor sanitation, an inability to grow food, and suboptimal health outcomes. A repeated measures longitudinal pilot study utilizing participatory design methods was conducted in Lima between September 2013 and September 2014 to determine the feasibility of implementing household gardens and the subsequent impact of increased green space on well-being. Anthropometric data and a composite of five validated mental health surveys were collected at the baseline, 6-months, and 12-months after garden construction. Significant increases from the baseline in all domains of quality of life, including: physical (p < 0.01), psychological (p = 0.05), social (p = 0.02), environmental (p = 0.02), and overall social capital (p < 0.01) were identified 12 months after garden construction. Life-threatening experiences decreased significantly compared to the baseline (p = 0.02). There were no significant changes in parent or partner empathy (p = 0.21), BMI (p = 0.95), waist circumference (p = 0.18), or blood pressure (p = 0.66) at 6 or 12 months. Improved access to green space in the form of a household garden can significantly improve mental health in an urban slum setting.
Keywords
Of-life Assessment; Psychometric Properties; Threatening Experiences; Vegetable Consumption; Developing-countries; Community Garden; Climate-change; Green Space; Poverty; Participation; Mental Health; Peru; Quality Of Life; Urban Slum; Social Capital
Wright, Olivia M.; Istanbulluoglu, Erkan; Horner, Richard R.; Degasperi, Curtis L.; Simmonds, Jim. (2018). Is There a Limit to Bioretention Effectiveness? Evaluation of Stormwater Bioretention Treatment Using a Lumped Urban Ecohydrologic Model and Ecologically Based Design Criteria. Hydrological Processes, 32(15), 2318 – 2334.
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Abstract
In this study, we developed the urban ecohydrology model (UEM) to investigate the role of bioretention on watershed water balance, runoff production, and streamflow variability. UEM partitions the land surface into pervious, impervious, and bioretention cell fractions. Soil moisture and vegetation dynamics are simulated in pervious areas and bioretention cells using a lumped ecohydrological approach. Bioretention cells receive runoff from a fraction of impervious areas. The model is calibrated in an urban headwater catchment near Seattle, WA, USA, using hourly weather data and streamflow observations for 3years. The calibrated model is first used to investigate the relationship between streamflow variability and bioretention cell size that receives runoff from different values of impervious area in the watershed. Streamflow variability is quantified by 2 indices, high pulse count (HPC), which quantifies the number of flow high pulses in a water year above a threshold, and high pulse range (HPR), which defines the time over which the pulses occurred. Low values of these indices are associated with improved stream health. The effectiveness of the modelled bioretention facilities are measured by their influence on reducing HPC and HPR and on flow duration curves in comparison with modelled fully forested conditions. We used UEM to examine the effectiveness of bioretention cells under rainfall regimes that are wetter and drier than the study area in an effort to understand linkages between the degree of urbanization, climate, and design bioretention cell size to improve inferred stream health conditions. In all model simulations, limits to the reduction of HPC and HPR indicators were reached as the size of bioretention cells grew. Bioretention was more effective as the rainfall regime gets drier. Results may guide bioretention design practices and future studies to explore climate change impacts on bioretention design and management.
Keywords
Performance Assessment; Hydrologic Alteration; Automated Techniques; Management-practices; Land-cover; Streams; Water; Impact; Area; Runoff; Bioretention; Ecohydrology; Green Infrastructure; Stormwater; Stream Health; Urban Hydrology; Evaluation; Urbanization; Watersheds; Soil Moisture; Water Balance; Stream Flow; Design; Variability; Ecological Monitoring; Computer Simulation; Storms; Climate Change; Duration; Water Runoff; Flow Duration Curves; Flow Duration; Cell Size; Soils; Duration Curves; Rainfall; Rivers; Cells; Headwaters; Surface Runoff; Dynamics; Rainfall Regime; Catchment Area; Design Criteria; Environmental Impact; Retention Basins; Soil Dynamics; Stream Discharge; Climatic Changes; Meteorological Data; Headwater Catchments
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