Natural Resources and Conservation Commons^™

Evaluation Of The Feasibility Of Struvite Precipitation From Domestic Wastewater As An Alternative Phosphorus Fertilizer Resource, Amanda R. Bird

Master's Projects and Capstones

Finite phosphate rock ore reserves are estimated to be exhausted in 100 to 150 years. Phosphate rock ore is the single global source material for phosphorus fertilizer production. Once these reserves are gone, agricultural production will be negatively impacted. There are currently no alternative phosphorus resources. However, phosphorus concentrations present in human excrement traveling through domestic wastewater treatment facilities is being disposed of directly to the environment, often resulting in pollution problems. Recovering phosphorus from wastewater with struvite precipitation systems at wastewater treatment plants can alleviate future phosphorus scarcities. Evaluation of phosphorus recovery through struvite precipitation at wastewater treatment plants …

Management Recommendations For Restoration Of The Degraded Olympia Oyster, Ostrea Lurida Carpenter 1864 In Tomales Bay, Ca, Carolyn M. Gibson

Master's Projects and Capstones

This research addresses the effective restoration of Olympia oyster populations in Tomales Bay, Marin County, California. Chapter 2 provides background information on the Tomales Bay estuary, regional history, and ecology of the Olympia oyster. Following this background discussion, each of the three aforementioned degraders of Olympia oyster populations in Tomales Bay is presented: ocean acidification (Chapter 3), sedimentation (Chapter 4), and invasive species (Chapter 5). Each of these issues creates numerous barriers that require the attention of resource protection managers. Chapter 6 presents overall Research Conclusions and Chapter 7 identifies management recommendations to effectively begin the restoration of the Olympia …

Ecodistricts In San Francisco: The Implementation Of Neighborhood Regional Planning And Its Potential Effects On Environmental Resilience, Elizabeth M. Juvera

Master's Projects and Capstones

Ecodistricts, or neighborhood-scale, community-driven areas of sustainable development, have emerged internationally and within the U.S. to create models of adaptive environmental design and advanced urban infrastructure. Central SoMa is the first ecodistrict to be planned and implemented in San Francisco, with the intention of revitalizing and greening this urbanized region of the city. At this time, the Central SoMa area has very low biodiversity levels, inefficient infrastructure, and poor water management capabilities. Through the implementation of ecodistricts in San Francisco, the city can integrate physical and behavioral sustainability measures from existing ecodistricts such as permeable surfaces, green roofs, stormwater management, …

Effective Mitigation Of Sedimentation On Riparian Riverbeds And Salmonid Populations After Dam Removal, Monica Oey

Master's Projects and Capstones

Riparian ecosystems rely on longitudinal connectivity of their streams and tributaries to maintain a healthy ecosystem. Longitudinal connectivity is especially important for salmonid populations, which and rely on longitudinal connectivity to reach spawning habitat. Dams prevent longitudinal connectivity while providing cities with potable water, hydroelectricity, and irrigation. With increasing knowledge of how dams negatively affect the riparian ecosystem and various polices, dam removals are increasing in popularly. However, a major concern with dam removal projects is the release of large loads of impounded sediment. Sediment is known to negatively impact salmonids life cycle through increasing turbidity and causing fine sediment …

Deep Energy Retrofits Using The Integrative Design Process: Are They Worth The Cost, Daniel S. Bertoldi

Master's Projects and Capstones

The McKinsey Global Initiative identified existing building retrofits as an integral component to achieve a 75% reduction in greenhouse gas emissions in the United Sates by 2050 (Fluhrer, Maurer, & Deshmukh 2010). However, this will require energy efficiency retrofits for existing buildings to be deployed more frequently and achieve higher energy savings on average. Deep Energy Retrofits using the Integrative Design Process can result in 30-60%+ energy savings in office buildings. Because Deep Energy Retrofits require higher upfront capital costs, in an economy still recovering from the economic downturn, financial decision makers may not be inclined to invest more capital …

Integrating Traditional Ecological Knowledge With Modern Day Ecosystem Management And Restoration Practices, Leialani O. Hufana

Master's Projects and Capstones

Traditional ecological knowledge (TEK) is a fairly new area of research that can supplement science research and modern day ecosystem management practices. Indigenous cultures and local communities have been using and passing on TEK in forestry, agricultural, and aquaculture/marine ecosystem management. Through a review of literature, TEK in Hawaiʻi was compared to TEK in other countries. TEK was also compared to modern day ecosystem management practices to determine if TEK could be integrated. In Hawaiʻi an ahupuaʻa, a land transect that cuts the islands in sections from mountain to sea, was an integrated watershed based management system. TEK in ahupuaʻa …

Watershed Protection As The Primary Tool To Achieve High Quality Drinking Water, Kate J. Gazzo

Master's Projects and Capstones

In this study, a cost-effectiveness analysis and multiple case studies of cities ranging from New York City, USA to Bogota, Columbia are discussed to show how watershed protection can reduce the associated costs and risks stemming from impaired water and usually eliminate the need for human engineered treatment. A cost-effectiveness analysis was performed by comparing three municipalities that have obtained Filtration Avoidance Determinations through watershed protection (green infrastructure) compared with three municipalities that have installed human engineered filtration (gray infrastructure). Using turbidity and E. coli as indicators of effectiveness, the results of this analysis determined that human engineered infrastructure is …

Lessons Learned From Urban River Restoration Projects: Application Of Restoration Treatments On The Los Angeles River., Nicole M. Tracy

Master's Projects and Capstones

Human development has altered many rivers around the world. In the past, urban rivers were condemned as flood hazards, and load-reducing treatments were the only treatments applied to protect the surrounding communities against flooding. These treatments aim to collect precipitation from the surrounding surfaces quickly and divert the water using the most direct and spatially conservative means as possible- most often using concrete. These treatments have left rivers in ecologically non-functioning states. The channelization of the Los Angeles River in 1938 is a prime example of load-reducing treatment application. This river is unique because it has many constraints of urbanization …

Carbon Sequestration In Tidal Salt Marshes And Mangrove Ecosystems, Carlos Eduardo Quintana-Alcantara

Master's Projects and Capstones

Wetlands are dynamic systems that provide support to vital environmental functions and services. Wetlands take part in the global carbon cycle by holding organic carbon in biomass, soils and sediments. In recent years, the wetland carbon sequestration capacity has been researched worldwide due to the increase of the concentrations of greenhouse gasses implicated in global warming and climate change. Although coastal wetlands release the greenhouse gasses carbon dioxide, methane and nitrous oxide, these ecosystems maintain high performance in offsetting significant amounts of atmospheric carbon. This paper investigated the carbon sequestration capacity of coastal wetland ecosystems summarizing the environmental conditions and …

Refining Dendrochronology To Evaluate The Relationship Between Age And Diameter For Dominant Riparian Trees In The Redwood Creek Watershed, Devin Barry

Master's Projects and Capstones

Methods of dendrochronology by means of incremental coring

have been refined in this study for specific use in northern

California riparian floodplains. Little information is available

on riparian dendrochronology because of the challenges of

analyzing riparian tree species. Three dominant tree species

(Alnus rubra, Umbellularia californica, Acer macrophyllum)

in the floodplain of Redwood Creek were evaluated for the

relationship between age and diameter at breast height (DBH)

using a least squares linear regression analysis. Through this

study, complications with analysis for the riparian tree species

led to a more thorough investigation as to enhancing core

quality and annual growth ring …

Tapping The Apocalypse & Healing With Intention, Julianne E. Henderson Ms.

Creative Activity and Research Day - CARD

When crisis strikes, practical skills and strategies are critical to one's survival. However, one's positive mentality, relationship with and knowledge of his or her environment, and capacity for compassion when faced with an apocalyptic landscape are just as likely to boost their morale. Maintaining an optimistic consciousness assists human beings with survival, regardless of what level of adversity we face. This research project combines an important skill, which is knowing how to heal oneself naturally with what Nature provides, with the power of our consciousness to determine our success, strength, and overall capacity for withstanding the hurricanes of change.