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Articles 5131 - 5160 of 18646
Full-Text Articles in Entire DC Network
What Can I Do As A Student To Make A Positive Impact On The Environment?, Tammy Guthrie, Greg Herzig, Kathy Prophet, Cassie Kautzer
What Can I Do As A Student To Make A Positive Impact On The Environment?, Tammy Guthrie, Greg Herzig, Kathy Prophet, Cassie Kautzer
Middle School Lesson Plans
Students discover ways they can make a positive impact on the environment.
Grove Gulch Stream Restoration Hydraulic Design, Alison Lunde
Grove Gulch Stream Restoration Hydraulic Design, Alison Lunde
Graduate Theses & Non-Theses
Blacktail Creek (BTC) is a second order stream that joins Silver Bow Creek (SBC) within Butte’s watershed. This stream contained heavy metals since Butte’s mining boom in the 1900’s, the source of the contamination is seen today at a place known as the “BTC berm” (Tuccci, 2014). Grove Gulch is a tributary stream of Blacktail Creek and is located southwest of Butte, MT. The stream is approximately 6 miles long from its headwaters to its point of discharge into BTC. Historically, this stream discharged half a mile downstream from its current location and in the late 1800’s the stream was …
The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- July 2018, Natalie Umphlett, Emily Brown, Crystal J. Stiles
The Prairie Post Quarterly Newsletter Of The High Plains Regional Climate Center- July 2018, Natalie Umphlett, Emily Brown, Crystal J. Stiles
Prairie Post: Quarterly Newsletter of the High Plains Regional Climate Center
Inside this issue:
Message from the interim director........................................1
Staff spotlight...........................1
GRAINEX project......................2
Product highlights..................3
Update on regional climate conditions..................................4
GIS Portal....................................4
Regional news..........................5
Recent and upcoming travel and activities.............................6
Biotime: A Database Of Biodiversity Time Series For The Anthropocene, Maria Dornelas, Laura H. Antão, Faye Moyes, Amanda E. Bates, Anne E. Magurran, Dušan Adams, Asem A. Akhmetzhanova, Ward Appeltans, José Manuel Adam, Frank P. Day
Biotime: A Database Of Biodiversity Time Series For The Anthropocene, Maria Dornelas, Laura H. Antão, Faye Moyes, Amanda E. Bates, Anne E. Magurran, Dušan Adams, Asem A. Akhmetzhanova, Ward Appeltans, José Manuel Adam, Frank P. Day
Biological Sciences Faculty Publications
Motivation: The BioTIME database contains raw data on species identities and abundances in ecological assemblages through time. These data enable users to calculate temporal trends in biodiversity within and amongst assemblages using a broad range of metrics. BioTIME is being developed as a community-led open-source database of biodiversity time series. Our goal is to accelerate and facilitate quantitative analysis of temporal patterns of biodiversity in the Anthropocene.
Main types of variables included: The database contains 8,777,413 species abundance records, from assemblages consistently sampled for a minimum of 2 years, which need not necessarily be consecutive. In addition, the database contains …
Water Flow And Biofilm Cover Influence Environmental Dna Detection In Recirculating Streams, Arial Shogren, Jennifer L. Tank, Scott P. Egan, Olivia August, Emma J. Rosi, Brittany R. Hanrahan, Mark A. Renshaw, Crysta A. Gantz, Diogo Bolster
Water Flow And Biofilm Cover Influence Environmental Dna Detection In Recirculating Streams, Arial Shogren, Jennifer L. Tank, Scott P. Egan, Olivia August, Emma J. Rosi, Brittany R. Hanrahan, Mark A. Renshaw, Crysta A. Gantz, Diogo Bolster
Environmental Science and Management Faculty Publications and Presentations
The increasing use of environmental DNA (eDNA) for determination of species presence in aquatic ecosystems is an invaluable technique for both ecology as a field and for the management of aquatic ecosystems. We examined the degradation dynamics of fish eDNA using an experimental array of recirculating streams, also using a “nested” primer assay to estimate degradation among eDNA fragment sizes. We introduced eDNA into streams with a range of water velocities (0.1–0.8 m s–1) and substrate biofilm coverage (0–100%) and monitored eDNA concentrations over time (∼10 d) to assess how biophysical conditions influence eDNA persistence. We found that the presence …
Waste Stream And Green Purchasing Analysis At Bonneville Lock And Dam, Alexander Bienko
Waste Stream And Green Purchasing Analysis At Bonneville Lock And Dam, Alexander Bienko
Environmental Science and Management Professional Master's Project Reports
The United States Army Corps of Engineers (USACE), Portland District, has jurisdiction on three locks and four dams in the Columbia River basin. These sites "contribute to a water resource management system that provides flood risk management, power generation, water quality improvement, fish and wildlife habitat and recreation on the Columbia River and some of its tributaries". The Bonneville Lock and Dam (Bonneville Project) site lies on the Columbia River approximately 40 miles east from Portland, Oregon. Portions of the site have been declared a National Historic Landmark, from its origins in President Franklin D. Roosevelt's New Deal program from …
Nadaka 2023 Management Plan, Andrea Hurzeler
Nadaka 2023 Management Plan, Andrea Hurzeler
Environmental Science and Management Professional Master's Project Reports
Nadaka 2023 is a management plan written for Nadaka Nature Park that aims to assess current conditions, define desired future conditions, and make recommendations to achieve those desired future conditions. Nadaka Nature Park is a publically owned nature area and park space located in the Wilkes East Neighborhood and bordering the Rockwood Neighborhood of Gresham, Oregon. Originally owned by the Camp Fire Organization, Nadaka was purchased in 1995 by the City of Gresham and opened to the public in 2001. Making up Nadaka is a 10 acre nature area and a 2 acre park space. The nature area consists of …
Reorganizing School Lunch For A More Just And Sustainable Food System In The Us, Jennifer Gaddis, Amy K. Coplen
Reorganizing School Lunch For A More Just And Sustainable Food System In The Us, Jennifer Gaddis, Amy K. Coplen
Urban Studies and Planning Faculty Publications and Presentations
Public school lunch programs in the United States are contested political terrains shaped by government agencies, civil society activists, and agri-food companies. The particular organization of these programs has consequences for public health, social justice, and ecological sustainability. This contribution draws on political economy, critical food studies, and feminist economics to analyze the US National School Lunch Program, one of the world's oldest and largest government-sponsored school lunch programs. It makes visible the social and environmental costs of the "heat-and-serve" economy, where widely used metrics consider only the speed and volume of service as productive work. This study demonstrates that …
Ord River Irrigation Area Stage 2: M2 Supply Channel - Compliance Assessment Report 2017 - Statement 938, Kimberley Boab Consulting
Ord River Irrigation Area Stage 2: M2 Supply Channel - Compliance Assessment Report 2017 - Statement 938, Kimberley Boab Consulting
Reports
This Compliance Assessment Report (CAR) for the Ord River Irrigation Area Stage 2 (M2 Supply Channel) addresses compliance with Ministerial Statement 938 (MS938) and the associated Environmental Management Program (EMP) for the period 1 January 2017 to 31 December 2017. The Project approval was granted under the Environmental Protection Act 1986 (EP Act).
Fisheries Bycatch Risk To Marine Megafauna Is Intensified In Lagrangian Coherent Structures, Kylie L. Scales, Elliot L. Hazen, Michael G. Jacox, Frederic Castruccio, Sara M. Maxwell, Rebecca L. Lewison, Steven J. Bograd
Fisheries Bycatch Risk To Marine Megafauna Is Intensified In Lagrangian Coherent Structures, Kylie L. Scales, Elliot L. Hazen, Michael G. Jacox, Frederic Castruccio, Sara M. Maxwell, Rebecca L. Lewison, Steven J. Bograd
Biological Sciences Faculty Publications
Incidental catch of nontarget species (bycatch) is a major barrier to ecological and economic sustainability in marine capture fisheries. Key to mitigating bycatch is an understanding of the habitat requirements of target and nontarget species and the influence of heterogeneity and variability in the dynamic marine environment. While patterns of overlap among marine capture fisheries and habitats of a taxonomically diverse range of marine vertebrates have been reported, a mechanistic understanding of the real-time physical drivers of bycatch events is lacking. Moving from describing patterns toward understanding processes, we apply a Lagrangian analysis to a high-resolution ocean model output to …
A Survey On Sensor Calibration In Air Pollution Monitoring Deployments, Balz Maah, Zimu Zhou, Lothar Thiele
A Survey On Sensor Calibration In Air Pollution Monitoring Deployments, Balz Maah, Zimu Zhou, Lothar Thiele
Research Collection School Of Computing and Information Systems
Air pollution is a major concern for public health and urban environments. Conventional air pollution monitoring systems install a few highly accurate, expensive stations at representative locations. Their sparse coverage and low spatial resolution are insufficient to quantify urban air pollution and its impacts on human health and environment. Advances in lowcost portable air pollution sensors have enabled air pollution monitoring deployments at scale to measure air pollution at high spatiotemporal resolution. However, it is challenging to ensure the accuracy of these low-cost sensor deployments because the sensors are more error-prone than high-end sensing infrastructures and they are often deployed …
A 30 Year Assessment Of Fecal Indicator Bacteria (Escherichia Coli And Enterococci) Along The Shoreline Of Santa Monica Bay, California, Chris Enyart
LMU Theses and Dissertations
Santa Monica Bay and its vast beaches are important Los Angeles icons, while also providing significant ecosystem services to over millions of recreational visitors annually. Contaminated runoff from numerous watersheds surrounding the Bay, especially the 87% urbanized Ballona Creek Watershed, have historically resulted in poor water quality along areas of the Bay shoreline. Decades of monitoring for fecal indicator bacteria (FIB) along the Bay’s shoreline has been associated with NPDES wastewater discharge and stormwater programs. Many projects have been implemented throughout the watersheds (e.g. sewer improvements, biofiltration systems, low-flow diversions (LFDs)) to lessen flows of runoff from contaminating surf zone …
The Importance Of Keeping The Big Ones: Harvest Slot Limits And Marine Protected Areas For The Management Of The Caribbean Spiny Lobster, Gayathiri Gnanalingam
The Importance Of Keeping The Big Ones: Harvest Slot Limits And Marine Protected Areas For The Management Of The Caribbean Spiny Lobster, Gayathiri Gnanalingam
Biological Sciences Theses & Dissertations
Fishing typically removes the oldest and/or largest individuals from populations undermining stability and reproductive success. Traditional fisheries management tools fail to protect these oldest and/or largest individuals, but two less conventional tools: marine protected areas (MPAs), and harvest slot limits have the potential to do so. Here I tested the possible use of these tools for the Caribbean spiny lobster, Panulirus argus, an iconic and economically valued species. After decades of intense fishing, the largest lobsters have largely been wiped out. The loss of the largest lobsters is significant as large lobsters have considerably greater reproductive potential than their …
Potential Interaction Analysis Of Offshore Wind Energy Areas And Breeding Avian Species On The Us Mid-Atlantic Coast, Jeri Lynn Wisman
Potential Interaction Analysis Of Offshore Wind Energy Areas And Breeding Avian Species On The Us Mid-Atlantic Coast, Jeri Lynn Wisman
Biological Sciences Theses & Dissertations
Due to increasing US interest in developing wind energy sites in offshore waters, we synthesized existing data on colonial breeding seabird populations with the potential risk of interacting with lease areas in the mid-Atlantic. Previous efforts by BOEM and NOAA have predicted avian density using at-sea survey data; we seek to complement this work by focusing specifically on birds during the critical and energetically demanding breeding life history stage. We combined colony size and location for each species along the mid-Atlantic coast with buffers around the colonies that correlate with the species’ foraging range. We integrated population size, vulnerability to …
Examining The Factors Shaping The Population Structure Of Thalassoma Bifasciatum In The Lemon Keys, Guna Yala, Panama, Nicole Stevens
Examining The Factors Shaping The Population Structure Of Thalassoma Bifasciatum In The Lemon Keys, Guna Yala, Panama, Nicole Stevens
Independent Study Project (ISP) Collection
Research question
What is the population structure of Thalassoma bifasciatum in the Lemon Keys, Guna Yala, Panama?
Research objective
To examine size class structure of Thalassoma bifasciatum and how its abundance and density vary in relation to factors such as substrate, species diversity and depth.
The Ecology Of The Usambara Double-Collared Sunbird (Cinnyris Usambaricus), Sarah Lueder
The Ecology Of The Usambara Double-Collared Sunbird (Cinnyris Usambaricus), Sarah Lueder
Independent Study Project (ISP) Collection
The ecology of the endemic Usambara Double-collared Sunbird (Cinnyris usambaricus) was investigated in the surrounding areas of and within Mazumbai Forest Reserve in the Lushoto District of Tanzania. As there is little known concerning the ecology of the species, this study sought to illuminate multiple aspects of their behavior and interactions. Over fourteen days (November 2nd-November 21st), the abundance of the species, their nesting behavior, their habitat preferences, their vocalizations, their diet, and their aggressive behaviors were observed and then analyzed. It was determined the species’ activity likely peaks in the early morning, their nesting is similar to other species …
Analysis Of Oncorhynchus Mykiss Tissue To Determine Lead Ion Concentration, Ciaran Edwards, Bailey Hoplight, Justin Pavan
Analysis Of Oncorhynchus Mykiss Tissue To Determine Lead Ion Concentration, Ciaran Edwards, Bailey Hoplight, Justin Pavan
The International Student Science Fair 2018
The variation in potential lead ion (Pb +2) concentration in various tissue samples of Oncorhynchus Mykiss (steelhead) trout caught in the Niagara River was investigated. This was used to develop a kinetic model of trace element bioaccumulation of lead in various tissues. By employing experimentally determined trace element influx and efflux from environmental food and water exposures, lead ion concentrations were determined using atomic absorption spectroscopy on homogenized fillet, liver, and gonad tissues collected from steelhead trout caught in the Niagara River. Lead ion concentrations were also determined from water samples collected at a GPS noted catch site. All sample …
Particles In Welding Fumes, Rebecca T. Williams
Particles In Welding Fumes, Rebecca T. Williams
USF Tampa Graduate Theses and Dissertations
The purpose of this study was to investigate whether or not differing base metals and filler wires used during welding processes contributed to differing amounts of ultrafine particles (UFP) and nanoparticles being emitted during the welding procedure. The study was also conducted to determine UFP and nanoparticle exposure in the breathing zones of the welders as well as the breathing zones of pipefitters and fire watchers, who commonly sit 6ft behind the welding arc. In order to determine if UFP and NP exposures differed with base metal and filler wire, all welding processes utilized the same welding machine for metal …
A Case Study Of The Ethanol Cleancook Stove Intervention And Potential Scale-Up In Ethiopia, Megan L. Benka-Coker, Wubshet Tadele, Alex Milano, Desalegn Getaneh, Harry Stokes
A Case Study Of The Ethanol Cleancook Stove Intervention And Potential Scale-Up In Ethiopia, Megan L. Benka-Coker, Wubshet Tadele, Alex Milano, Desalegn Getaneh, Harry Stokes
Health Sciences Faculty Publications
Background
Approximately 80% of Ethiopia's energy consumption is dominated by woody biomass fuel use, resulting in 91.2 million tons of firewood and 4.2 million tons of charcoal consumed annually. Ethiopia's dependency on non-sustainable energy, especially for cooking, has been a major concern for the nation for the past 30 years, contributing to deforestation, climate change, and adverse human health impacts.
Objectives
Our objective was to document the work of Gaia Association and the implementation of the ethanol CleanCook stove in the refugee camp and urban settings of Ethiopia. We then assessed the potential for the scale-up of ethanol as a …
Harvesting Invasive Plants To Reduce Nutrient Loads And Produce Bioenergy: An Assessment Of Great Lakes Coastal Wetlands, Brendan D. Carson, Shane C. Lishawa, Nancy C. Tuchman, Andrew M. Monks, Beth A. Lawrence, Dennis A. Albert
Harvesting Invasive Plants To Reduce Nutrient Loads And Produce Bioenergy: An Assessment Of Great Lakes Coastal Wetlands, Brendan D. Carson, Shane C. Lishawa, Nancy C. Tuchman, Andrew M. Monks, Beth A. Lawrence, Dennis A. Albert
School of Environmental Sustainability: Faculty Publications and Other Works
In Laurentian Great Lakes coastal wetlands (GLCWs), dominant emergent invasive plants are expanding their ranges and compromising the unique habitat and ecosystem service values that these ecosystems provide. Herbiciding and burning to control invasive plants have not been effective in part because neither strategy addresses the most common root cause of invasion, nutrient enrichment. Mechanical harvesting is an alternative approach that removes tissue‐bound phosphorus and nitrogen and can increase wetland plant diversity and aquatic connectivity between wetland and lacustrine systems. In this study, we used data from three years of Great Lakes‐wide wetland plant surveys, published literature, and bioenergy analyses …
An Investigation Of The Tissue Distribution Of Lead In Steelhead Trout, Ciaran Edwards, Bailey Hoplight, Justin Pavan
An Investigation Of The Tissue Distribution Of Lead In Steelhead Trout, Ciaran Edwards, Bailey Hoplight, Justin Pavan
The International Student Science Fair 2018
Lead is a metal that interferes with a variety of body processes and is toxic to many organs in humans and other animals. There is a legacy of lead pollution in the waterways of Western New York (WNY). Fish consumption advisories in WNY are partially based on the danger of lead contamination. However, it is not always clear if tissues of the fish that are commonly consumed are as highly contaminated as less commonly consumed tissues. In collaboration with a research team from D’Youville College, we investigated the lead concentration in different tissues of nine steelhead trout caught in the …
Sustainable Production Of Bio-Based Succinic Acid From Plant Biomass, Enlin Lo
Sustainable Production Of Bio-Based Succinic Acid From Plant Biomass, Enlin Lo
USF Tampa Graduate Theses and Dissertations
Succinic acid is a compound used for manufacturing lacquers, resins, and other coating chemicals. It is also used in the food and beverage industry as a flavor additive. It is predominantly manufactured from petrochemicals, but it can also be produced more sustainably by fermentation of sugars from renewable feedstocks (biomass). Bio-based succinic acid has excellent potential for becoming a platform chemical (building block) for commodity and high-value chemicals.
In this study, we focused on the production of bio-based succinic acid from the fiber of sweet sorghum (SS), which has a high fermentable sugar content and can be cultivated in a …
Urban Animals: Gis Analysis Of Stray Canines And Felines In Albuquerque, New Mexico, Courtney Brock
Urban Animals: Gis Analysis Of Stray Canines And Felines In Albuquerque, New Mexico, Courtney Brock
Geography ETDs
While human influence and progress has shaped the cityscape of Albuquerque, New Mexico, many stray animals also consider this city to be their home. Albuquerque’s Animal Welfare Department holds a human responsibility over these urban animals and their habitat displacement, requiring them to either be registered and owned or euthanized. Although animal rights are a topic continually in debate, the habitat choices made by stray animals are rarely questioned, due to anthropocentrism in the city’s structure and laws.
Through observational field research with Albuquerque’s Animal Welfare Officers, stray animal locations were collected throughout the city for one week in July …
Ripple Effects Of The Belo Monte Dam: A Syndemic Approach To Addressing Health Impacts For The Downstream Community Of Gurupá, Cynthia A. Pace
Ripple Effects Of The Belo Monte Dam: A Syndemic Approach To Addressing Health Impacts For The Downstream Community Of Gurupá, Cynthia A. Pace
USF Tampa Graduate Theses and Dissertations
This dissertation examines the public health impacts of a large dam project on a downstream community using the framework of Syndemic Theory. The particular focus is the Belo Monte Dam, located in the Brazilian Amazon, and its impact on the community of Gurupá, Pará. At the present time the Belo Monte Dam, which is nearing completion, stands out in scale as being the world’s third largest dam complex. Gurupá is a community well known (and well-studied) in the social science literature as Amazon Town. The aims of this study are to assess the pre-existing public health of Gurupá, as well …
International Energy Geopolitics, Bert Chapman
International Energy Geopolitics, Bert Chapman
Libraries Faculty and Staff Presentations
Overview of international energy geopolitical trends. Emphasizes the importance of the Persian Gulf, South China Sea, East China Sea, Russia, and the Arctic to U.S. and international economic and strategic developments. Stresses the continuing importance of fossil fuels in domestic and international energy consumption, the variety of energy sources being used by various global regions, the potential for military conflict over access to natural resources, and how emerging energy leaders will determine global energy, environmental, and international security developments.
Spatial Distribution Of Bactrocera Dorsalis And Thaumatotibia Leucotreta In Smallholder Avocado Orchards Along Altitudinal Gradient Of Taita Hills And Mount Kilimanjaro, James J. Odanga, Samira Mohamed, Sizah Mwalusepo, Florence Olubayo, Richard Nyankanga, Fathiya Khamis, Ivan Rwomushana, Tino Johansson, Sunday Ekesi
Spatial Distribution Of Bactrocera Dorsalis And Thaumatotibia Leucotreta In Smallholder Avocado Orchards Along Altitudinal Gradient Of Taita Hills And Mount Kilimanjaro, James J. Odanga, Samira Mohamed, Sizah Mwalusepo, Florence Olubayo, Richard Nyankanga, Fathiya Khamis, Ivan Rwomushana, Tino Johansson, Sunday Ekesi
All Peer-Reviewed Publications
Avocado (Persea americana) fruits are an important source of income and a nutritious food for small-scale growers and other stakeholders involved in farming along the Afrotropical highlands of Taita Hills and Mount Kilimanjaro in Kenya and Tanzania, respectively. Avocado fruits are infested by several insect pests, namely the Asian invasive fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), and the false codling moth, Thaumatotibia leucotreta Meyrick (Lepidoptera: Tortricidae). However, there is inadequate information on the distribution patterns of these pests in small-scale avocado cropping systems in the East African highlands. This study was initiated to generate a spatial distribution map of …
Regulatory Methodology And Unmitigated Wetland Loss In Southwest Florida, Kathleen B. Castor
Regulatory Methodology And Unmitigated Wetland Loss In Southwest Florida, Kathleen B. Castor
USF Tampa Graduate Theses and Dissertations
This research used Geographical Information System (GIS) data to estimate the acreage of wetland loss due to small-scale activities (taking into account exempt, permitted, and unauthorized activities) in the Southwest District of the Department of Environmental Protection (DEP) between 2006 and 2011 and compared that net loss with the unmitigated wetland net loss that DEP documented during that time for authorized activities and violations that were discovered. The comparison allowed an estimation of the extent of undocumented small-scale unmitigated wetland loss that occurred during those six years. DEP records show that 88% of non-compliance cases remain unresolved, and the net …
Tracking Drought Perspectives: A Rural Case Study Of Transformations Following An Invisible Hazard, Theresa Jedd, Deborah Bathke, Duane Gill, Bimal Paul, Nicole Wall, Tonya Bernadt, Jacob Peter, Anthony Mucia, Milan Wall
Tracking Drought Perspectives: A Rural Case Study Of Transformations Following An Invisible Hazard, Theresa Jedd, Deborah Bathke, Duane Gill, Bimal Paul, Nicole Wall, Tonya Bernadt, Jacob Peter, Anthony Mucia, Milan Wall
National Drought Mitigation Center: Faculty Publications
Rural towns are especially susceptible to the effects of drought because their economies are dependent on natural resources. However, they are also resilient in many ways to natural hazards because they are rich in civic engagement and social capital. Because of the diverse nature of drought’s impacts, understanding its complex dynamics and its effects requires a multidisciplinary approach. To study these dynamics, this research combines appreciative inquiry, the Community Capitals Framework, and a range of climatological monitoring data to assess the 2012–14 Great Plains drought’s effect on McCook, Nebraska. Community coping measures, such as water-use reduction and public health programs, …
Understanding Agricultural-Land Conservation From The Perspective Of Landowners In Franklin County, Massachusetts, Rocio Lalanda
Understanding Agricultural-Land Conservation From The Perspective Of Landowners In Franklin County, Massachusetts, Rocio Lalanda
USF Tampa Graduate Theses and Dissertations
What motivates agricultural-land owners to use conservation easements? As these legal tools have become a popular strategy for private land conservation in the U.S., a growing body of literature is examining how and why landowners conserve their properties through conservation easements. This research project expands upon environmental, geographical and rural land development literature through a qualitative fieldwork study of 34 private, conservation landowners associated with the Franklin Land Trust, a nonprofit conservation organization in western Massachusetts. The study identifies a broad range of environmental, social, spiritual and financial motivations for agricultural-land owners to conserve their properties, and indicates that for …
Composition And Dispersal Dynamics Of Vegetation Communities In Urban Riparian Forests, Christa Von Behren
Composition And Dispersal Dynamics Of Vegetation Communities In Urban Riparian Forests, Christa Von Behren
Dissertations and Theses
In urban riparian areas, vegetation composition may be affected by urban land use changes at both the stream reach and the watershed scale. Moreover, the mechanisms by which seeds disperse may be affected both by reduction in seed sources due to vegetation removal and by the urban stream syndrome that produces flashier hydrographs and incised channels. I hypothesized that vegetation communities with high cover of native and hydrophilic species would be found in watersheds with high forest cover, while more limited cover of these species would be found in highly developed watersheds. Additionally, to examine the dispersal mechanisms contributing to …