Natural Resources & Sustainability Archives - Page 13 of 19

Small-Scale and Extensive Hydrogeomorphic Modification and Water Redistribution in a Desert City and Implications for Regional Nitrogen Removal

Larson, Elisabeth K.; Grimm, Nancy B. (2012). Small-Scale and Extensive Hydrogeomorphic Modification and Water Redistribution in a Desert City and Implications for Regional Nitrogen Removal. Urban Ecosystems, 15(1), 71 – 85.

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Abstract

There are numerous examples of small-scale hydrogeomorphic manipulations within urban ecosystems. These modifications are motivated both by a need to handle storm drainage and by a human desire for aquatic ecosystems as places for recreation and aesthetics. In the Phoenix Arizona metropolitan area, two examples of these local modifications are artificial lakes and stormwater retention basins. Although lakes are not a natural feature of Sonoran Desert ecosystems, numerous artificial lakes are evident in the region. Retention basins are a common landscaping practice for preventing damage from rare but potentially large storm events. Here we attempt to quantify the heretofore unknown number and extent of these designed aquatic ecosystems and consider their potential impact on hydrologic landscape connectivity and regional nitrogen (N) removal. For lakes, we found that official GIS layers from local and state agencies had significant misclassifications and omissions. We used two published GIS datasets and state impoundment-permit information to determine the number, areal extent, and water source for artificial lakes. We discovered that there are 908-1,390 lakes in the Phoenix area, with the number varying according to level of aggregation. There are no existing GIS data on retention basins, so we employed drywell-permit data to estimate that there may be 10,000 retention basins in the region. Basic data on N stocks in these ecosystems are discussed within the context of the regional N budget. Accurate data on the extent and distribution of these designed ecosystems will be vital for water-resources planning and stormwater management.

Keywords

Urban; Urbanization; Retention; Phoenix

Planning For The Future Of Urban Biodiversity: A Global Review Of City-scale Initiatives.

Nilon, Charles H.; Aronson, Myla F. J.; Cilliers, Sarel S.; Dobbs, Cynnamon; Frazee, Lauren J.; Goddard, Mark A.; O’Neill, Karen M.; Roberts, Debra; Stander, Emilie K.; Werner, Peter; Winter, Marten; Yocom, Ken P. (2017). Planning For The Future Of Urban Biodiversity: A Global Review Of City-scale Initiatives. Bioscience, 67(4), 331 – 341.

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Abstract

Cities represent considerable opportunities for forwarding global biodiversity and sustainability goals. We developed key attributes for conserving biodiversity and for ecosystem services that should be included in urban-planning documents and reviewed 135 plans from 40 cities globally. The most common attributes in city plans were goals for habitat conservation, air and water quality, cultural ecosystem services, and ecological connectivity. Few plans included quantitative targets. This lack of measurable targets may render plans unsuccessful for an actionable approach to local biodiversity conservation. Although most cities include both biodiversity and ecosystem services, each city tends to focus on one or the other. Comprehensive planning for biodiversity should include the full range of attributes identified, but few cities do this, and the majority that do are mandated by local, regional, or federal governments to plan specifically for biodiversity conservation. This research provides planning recommendations for protecting urban biodiversity based on ecological knowledge.

Keywords

Sustainability; Urban Planning; Urban Biodiversity; Urban Ecology (biology); Water Quality; Air Quality; Biodiversity Conservation; Ecosystem Services; Governance; Policy Regulation; Green Infrastructure; Climate-change; Human Health; Cities; Opportunities; Metaanalysis; Framework; Richness

Environmental Benefits of Using Hybrid CLT Structure in Midrise Non-Residential Construction: An LCA Based Comparative Case Study in the U.S. Pacific Northwest

Pierobon, Francesca; Huang, Monica; Simonen, Kathrina; Ganguly, Indroneil. (2019). Environmental Benefits of Using Hybrid CLT Structure in Midrise Non-Residential Construction: An LCA Based Comparative Case Study in the U.S. Pacific Northwest. Journal Of Building Engineering, 26.

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Abstract

In this study, the cradle-to-gate environmental impact of a hybrid, mid-rise, cross-laminated timber (CLT) commercial building is evaluated and compared to that of a reinforced concrete building with similar functional characteristics. This study evaluates the embodied emissions and energy associated with building materials, manufacturing, and construction. Two alternative designs are considered for fire protection in the hybrid CLT building: 1) a 'fireproofing design', where gypsum wallboard is applied to the structural wood; and 2) a 'charring design', where two extra layers of CLT are added to the panel. The life cycle environmental impacts are assessed using TRACI 2.1 and the total primary energy is evaluated using the Cumulative Energy Demand impact method. Results show that an average of 26.5% reduction in the global warming potential is achieved in the hybrid CLT building compared to the concrete building, excluding biogenic carbon emissions. Except ozone depletion, where the difference in impact between scenarios is < 1%, replacing fireproofing with charring is beneficial for all impact categories. The embodied energy assessment of the building types reveals that, on average, the total primary energy in the hybrid CLT buildings and concrete building are similar. However, the non-renewable energy (fossil-based) use in the hybrid CLT building is 8% lower compared to that of the concrete building. As compared to the concrete building, additional 1,556 tCO(2)(e) and 2,567 tCO(2e) are stored in the wood components of the building (long-term storage of biogenic carbon) in the scenario with fireproofing and with charring, respectively.

Keywords

Wood; Concrete; Energy; Buildings; Impacts; Cross-laminated Timber; U.s. Pacific Northwest; Life Cycle Assessment; Cumulative Energy Demand; Biogenic Carbon; Carbon Storage

The Ecological and Evolutionary Consequences of Systemic Racism in Urban Environments

Schell, Christopher J.; Dyson, Karen; Fuentes, Tracy L.; Des Roches, Simone; Harris, Nyeema C.; Miller, Danica Sterud; Woelfle-Erskine, Cleo A.; Lambert, Max R. (2020). The Ecological and Evolutionary Consequences of Systemic Racism in Urban Environments. Science, 369(6510), 1446.

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Abstract

Urban areas are dynamic ecological systems defined by interdependent biological, physical, and social components. The emergent structure and heterogeneity of urban landscapes drives biotic outcomes in these areas, and such spatial patterns are often attributed to the unequal stratification of wealth and power in human societies. Despite these patterns, few studies have effectively considered structural inequalities as drivers of ecological and evolutionary outcomes and have instead focused on indicator variables such as neighborhood wealth. In this analysis, we explicitly integrate ecology, evolution, and social processes to emphasize the relationships that bind social inequities-specifically racism-and biological change in urbanized landscapes. We draw on existing research to link racist practices, including residential segregation, to the heterogeneous patterns of flora and fauna observed by urban ecologists. In the future, urban ecology and evolution researchers must consider how systems of racial oppression affect the environmental factors that drive biological change in cities. Conceptual integration of the social and ecological sciences has amassed considerable scholarship in urban ecology over the past few decades, providing a solid foundation for incorporating environmental justice scholarship into urban ecological and evolutionary research. Such an undertaking is necessary to deconstruct urbanization's biophysical patterns and processes, inform equitable and anti-racist initiatives promoting justice in urban conservation, and strengthen community resilience to global environmental change.

Keywords

New-york; Climate-change; Land-cover; Socioeconomic-status; Ecosystem Services; Oxidative Stress; Green Spaces; Gene Flow; Justice; Cities

Daniel Abramson and collaborators awarded EarthLab Innovation grant for community-based research project on climate change & social justice

The EarthLab Innovations Grant Program was launched in 2019 to fund actionable environmental research. The 2022-23 EarthLab Innovation Grants program received 33 high-quality proposals for research at the intersection of climate change and social justice. One awarded project titled, “Centering Place and Community to Address Climate Change and Social Justice” was led by P.I. Daniel Abramson, Associate Professor of Urban Design & Planning and Adjunct Associate Professor of Architecture & Landscape Architecture, and Community Lead, Jamie Judkins, of the Shoalwater…

Entombed in the Landscape: Waste with Assistant Professor Catherine De Almeida

Assistant Professor of Landscape Architecture Catherine De Almeida remembers picking up trash on the playground, seeing people throw trash out their car window, and noticing trash flying around while she played outside as a child. The presence of litter in landscapes upset her so much that she would spend her elementary school recesses picking up trash. When she got into the field of architecture, De Almeida found herself drawn to how things could be flexible and take on multiple identities…

Judy Bowes

My primary research interest focuses on preventing avian fatalities resulting from collisions with buildings and structures through effective glass, lighting, and landscape design strategies. My broader objective is to demonstrate how these design strategies are integral to sustainable building objectives and avian conservation goals throughout the built environment. I also plan to explore how providing habitat space for birds and protecting wildlife supports visual biodiversity, positively impacting human well-being and the local ecology.

My additional interests include discovering the intersection between biophilic design elements in early Middle Eastern Architecture and sustainable architecture in the contemporary Middle East.

Judy’s project “Evaluating Campus Bird Building Collisions” has been funded by multiple Campus Sustainability Fund awards.

Project summary:

Every day the campus community actively engages with the buildings where we learn, work, play or live. However, most are unaware of the over 100 species of birds found on campus or that they collide with the buildings’ surfaces. Birds cannot detect transparent glass surfaces, like windows or glass walkways, and fly towards vegetation, open spaces, or perches beyond the glass, hitting it head-on. Reflective glass is also dangerous for birds as it can reflect habitat space or the sky, confusing birds as they fly towards the reflection resulting in collisions. And night collisions occur when birds fly towards lit windows or surfaces, particularly during fall and spring migration. A study from the University of British Columbia estimates that college campuses can kill up to 10,000 birds yearly due to collisions. However, there are design solutions available to prevent bird building collisions.

This project aims to understand where collision “hot spots” are on our campus and develop a plan to treat them. By monitoring 20 campus buildings over six quarters, we will increase our understanding of which species are affected by collisions and identify the deadliest design features. The project will also bring awareness to the issue of bird building collisions by engaging campus and local communities through campus tours, a course taught by the project lead, an app allowing anyone to record collisions across campus, and recruiting volunteers for collision monitoring.

Gathering data about the collision victims, birds, and deadly architectural features on campus provides a unique opportunity for students to engage in the study of birds and buildings. This convenient central location eliminates extra travel time or field trip fees, allowing more students to join the project. Further, this project will engage underrepresented communities, particularly in the environmental sciences and architecture and the LGBTQIA community, first-generation students, and women in the sciences through volunteer opportunities, the project’s course, and research assistant positions.

Keisha Bharath

Research Interests: Urban Sustainability Indicators, Small Island Developing States, Climate Change, Natural Resource Management, Urban Design.

Urban@UW Publishes Report on the Lessons and Levers for University Collaborations with Governmental and Community Partners

Jennifer Davison, Director of Urban@UW & Assistant Dean for Research of the College of Built Environments here at UW, and Thaïsa Way, Founding Director of Urban@UW, current Director of Garden & Landscape Studies at Dumbarton Oaks Research Library and Collections, Harvard University, and Professor in UW’s Department of Landscape Architecture, have published a report titled, Lessons and Levers for University Collaborations with Governmental and Community Partners: A Synthesis of the Bullit Foundation’s Thought Leadership and Innovation RFP. This report, developed…

Carbon Leadership Forum among Finalists Selected for $10 Million 2030 Climate Challenge

On February 9, Lever for Change announced that the College of Built Environment’s Carbon Leadership Forum (CLF) and four other finalist teams will advance to the next stage of the 2030 Climate Challenge, a $10 million award launched last year to reduce greenhouse gas emissions in the U.S. by 2030. The Challenge, sponsored by an anonymous donor, will fund proven, data-driven solutions tackling greenhouse gas emissions in the buildings, industry, and/or transportation sectors in communities across the country. Sixty-eight proposals…