Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Environmental Sciences

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 14971 - 15000 of 22715

Full-Text Articles in Entire DC Network

Demographics Of Non-Hunted White-Tailed Deer Populations In Suburban Areas, Anthony J. Denicola, Dwayne R. Etter, Thomas Almendinger Jan 2008

Demographics Of Non-Hunted White-Tailed Deer Populations In Suburban Areas, Anthony J. Denicola, Dwayne R. Etter, Thomas Almendinger

Human–Wildlife Interactions

Burgeoning deer populations in urban and suburban areas, along with the inherent problems stemming from this increase, are becoming increasingly widespread. To address these problems, wildlife biologists need quality baseline data of herd composition for harvest and treatment forecasts for management and fertility control research programs. In this study, we provide white-tailed deer (Odocoileus virginianus) population data from 4 areas where localized suburban white-tailed deer populations were substantially reduced utilizing sharpshooting as a management tool. In each area, legal hunting was nonexistent for >10 years preceding the sharpshooting program. The areas ranged in size from 300 ha to …


Book Review: Urban Wildlife Management, Jennifer Lynch Jan 2008

Book Review: Urban Wildlife Management, Jennifer Lynch

Human–Wildlife Interactions

The ever-growing field of human–wildlife conflicts has lacked a comprehensive textbook that addresses wildlife management in the urban landscape. Professors teaching urban wildlife classes have drawn on peer-reviewed and popular articles to support the subject matter. Enter wildlife professors Clark Adams, Sara Ash, and Kieran Lindsey. Together, they have brought to us the first comprehensive book on urban wildlife management, titled (you guessed it) Urban Wildlife Management.


Deer–Vehicle Collision Prevention Techniques, Lauren L. Mastro, Michael R. Conover, S. Nicole Frey Jan 2008

Deer–Vehicle Collision Prevention Techniques, Lauren L. Mastro, Michael R. Conover, S. Nicole Frey

Human–Wildlife Interactions

Every year in the United States approximately 1.5 million deer–vehicle collisions (DVCs) occur resulting in >29,000 human injuries, >200 human fatalities, 1.3 million deer fatalities, and >1 billion dollars worth of property damage. Despite the magnitude of this problem, there are relatively few well-designed studies that have evaluated techniques that can be used to reduce DVCs. Techniques to reduce DVCs fall into 4 categories: reducing the number of deer (Odocoileus spp.), reducing the number of vehicles, modifying deer behavior, and changing motorist behavior. Techniques to reduce the number of deer include decreasing the deer population or excluding deer from …


Factors Affecting Autumn Deer–Vehicle Collisions In A Rural Virginia County, William J. Mcshea, Chad M. Stewart, Laura J. Kearns, Stefano Liccioli, David Kocka Jan 2008

Factors Affecting Autumn Deer–Vehicle Collisions In A Rural Virginia County, William J. Mcshea, Chad M. Stewart, Laura J. Kearns, Stefano Liccioli, David Kocka

Human–Wildlife Interactions

Vehicular collisions with white-tailed deer (Odocoileus virginianus) are a safety and economic hazard to motorists. Many efforts to reduce deer–vehicle collisions (DVCs) have proven unsuccessful, but deer reduction has been a primary management tool in several states. The Virginia Department of Transportation geo-located all known DVCs in Clarke County, Virginia, from August through December 2005 (n = 246) and 2006 (n = 259). We estimated harvest intensity, deer population density, amount of forest and housing development, presence of row crops, and traffic volume and speed for 228 road segments (each 500 m in length) within the county to …


Gnrh Immunocontraception Of Male And Female White-Tailed Deer Fawns, Lowell A. Miller, James P. Gionfriddo, Jack C. Rhyan, Kathleen A. Fagerstone, Donald C. Wagner, Gary J. Killian Jan 2008

Gnrh Immunocontraception Of Male And Female White-Tailed Deer Fawns, Lowell A. Miller, James P. Gionfriddo, Jack C. Rhyan, Kathleen A. Fagerstone, Donald C. Wagner, Gary J. Killian

Human–Wildlife Interactions

Immunocontraceptive vaccines based on gonadotropin-releasing hormone (GnRH) have been tested in adult white-tailed deer (Odocoileus virginianus), but their effects on fawns are unknown. The purpose of this study was to determine if early immunization against GnRH would induce a long-lasting immune response in fawns, and if it would delay or prevent sexual development. We gave primary and subsequent booster injections of a KLH-GnRH/Freund’s vaccine to 6 male and 6 female fawns. This vaccine contained the same active ingredients as GonaCon™ vaccine, but it contained Freund’s adjuvant instead of AdjuVac™ adjuvant. Two 450-μg injections were given 1 month apart …


Landscape And Traffic Factors Influencing Deer–Vehicle Collisions In An Urban Enviroment, Janet W. Ng, Charlene Nielson, Colleen Cassady St. Clair Jan 2008

Landscape And Traffic Factors Influencing Deer–Vehicle Collisions In An Urban Enviroment, Janet W. Ng, Charlene Nielson, Colleen Cassady St. Clair

Human–Wildlife Interactions

Deer–vehicle collisions (DVCs) are steadily increasing across North America. The increase is particularly pronounced in urban green spaces where deer (Odocoileus spp.) populations and road densities are high. In the greater city of Edmonton, Alberta, Canada, 333 DVCs occurred from 2002 to 2004. To identify landscape and traffic correlates of these collisions, we built 3 statistical models. The first model assessed the importance of local variables and was based on a spatial precision of the nearest intersection to which collisions were referenced. The second model was based on landscape characteristics and used the nearest township intersection to aggregate collisions. …


Deer–Vehicle Collision Trends At A Suburban Immunocontraception Site, Allen T. Rutberg, Ricky E. Naugle Jan 2008

Deer–Vehicle Collision Trends At A Suburban Immunocontraception Site, Allen T. Rutberg, Ricky E. Naugle

Human–Wildlife Interactions

Observations of extended estrus seasons in female white-tailed deer (Odocoileus virginianus) vaccinated with porcine zona pellucida (PZP) immunocontraceptives have led to speculation that management use of PZP would, perversely, increase the rate of deer–vehicle collisions. To test this hypothesis, we studied PZP-treated female deer at the National Institute of Standards and Technology, Gaithersburg, Maryland. PZP-treated female deer did not differ from untreated female deer in risk of death by vehicle collision, and the number of deer killed in vehicle collisions was uncorrelated with the number of deer treated with PZP, whether or not population size was controlled for. …


Hunting Helps Maintain Deer As A Valued Public Resource, Robert Southwick Jan 2008

Hunting Helps Maintain Deer As A Valued Public Resource, Robert Southwick

Human–Wildlife Interactions

Deer are a precious natural resource. They spellbind us with their grace. Their freedom to roam wild without boundaries reaches into our soul. But deer can spring without warning into the paths of oncoming vehicles, causing accidents that result in >1 billion dollars in damages annually. They extend their grazing into suburban yards, garden nurseries, orchards, and farms. They harbor the ticks that transmit pathogens that cause illnesses such as Lyme disease. The U.S. Centers for Disease Control and Prevention reported 23,763 cases of Lyme disease during 2002. Deer will even overeat their own food supply, causing them to face …


Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, October 1, 2007 To December 31, 2007, Margaret N. Rees Dec 2007

Lake Mead National Recreation Area Vegetation Monitoring And Analysis: Quarterly Progress Report, October 1, 2007 To December 31, 2007, Margaret N. Rees

Vegetation Monitoring

Executive Summary

  • The Weed Sentry program surveyed more than 750 miles of federal lands in Clark County for invasive, exotic plant species.
  • Weed Sentry also removed more than 600,000 individual invasive plants from federal
    lands. These removals represent pro-active efforts that may have forestalled large
    infestations difficult and costly to eradicate.
  • In response to a request by the manager of the Fish and Wildlife Service Desert National
    Wildlife Refuge, a major effort of surveying springs for plant community composition
    and invasive plants provided unique knowledge services by the Weed Sentry program.
    No such baseline information existed for the Sheep Range. …


Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2007, Margaret N. Rees Dec 2007

Interagency Science And Research: Quarterly Progress Report, Period Ending December 31, 2007, Margaret N. Rees

Interagency Science and Research Strategy

  • Meetings were held with the SNAP Recreation Team and the SNAP Cultural Resources Team to request assistance in the development of the science strategy. Draft versions of interagency goals, subgoals, science questions, and associated tasks were given to each team for review and input.
  • Plans were prepared for the peer review of science proposals submitted for consideration as Conservations Initiatives in SNPLMA Round 9.
  • Proceedings of the natural resources management workshop held on September 13 were completed and sent to the Science & Research Team for review by members.
  • An important focus of the Science and Research Team was the …


Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Progress Report, Period Ending: December 31, 2007, Margaret N. Rees Dec 2007

Limnological Assistance For The Lake Mead National Recreation Area In Meeting The Challenge Of The Water 2025 Initiative: Quarterly Progress Report, Period Ending: December 31, 2007, Margaret N. Rees

Limnological Studies

  • The limnologist position has been announced.
  • Project 1: Review of the draft Boulder Basin Adaptive Management Plan is underway.
  • Project 2: Development of a white paper expressing the joint needs of the entities involved in Water 2025 projects is being coordinated.
  • Project 3: A bibliographic reference spreadsheet organizing literature citations related to quagga and zebra mussel research has been completed.
  • Project 4: A comprehensive literature search of Lake Mead limnology is well underway; an Access database has been designed to organize reference citations; and a special collections library at UNLV is being established to house original rare documents and other …


Lake Mead National Recreation Area Sensitive Wildlife Species Monitoring And Analysis: Quarterly Progress Report, Period Ending December 31, 2007, Margaret N. Rees Dec 2007

Lake Mead National Recreation Area Sensitive Wildlife Species Monitoring And Analysis: Quarterly Progress Report, Period Ending December 31, 2007, Margaret N. Rees

Wildlife Monitoring

Project 1. Relict Leopard Frog Monitoring, Management, and Research

  • Fall surveys completed at all natural and translocation sites.
  • Coordination for a potential translocation site on BLM lands in the Gold Butte area ongoing – the aim is that this site will be ready for translocations in 2008.
  • Coordination ongoing for evaluation of a translocation site on BLM lands in the Black Mountains, AZ – the plan is to complete compliance in 2008.
  • Coordination and assistance provided to UNLV research efforts on habitat improvements at Blue Point, Rogers, and Pupfish Refuge springs.
  • Relict Leopard Frog Conservation Team meeting held in December. …


Science Plan For Potential 2008 Experimental High Flow At Glen Canyon Dam, Grand Canyon Monitoring And Research Center Dec 2007

Science Plan For Potential 2008 Experimental High Flow At Glen Canyon Dam, Grand Canyon Monitoring And Research Center

All U.S. Government Documents (Utah Regional Depository)

No abstract provided.


Biogeochemical Evolution Of Cryoconite Holes On Canada Glacier, Taylor Valley, Antarctica, Elizabeth A. Bagshaw, Martyn Tranter, Andrew G. Fountain, Kathleen A. Welch, Hassan J. Basagic, W. Berry Lyons Dec 2007

Biogeochemical Evolution Of Cryoconite Holes On Canada Glacier, Taylor Valley, Antarctica, Elizabeth A. Bagshaw, Martyn Tranter, Andrew G. Fountain, Kathleen A. Welch, Hassan J. Basagic, W. Berry Lyons

Geography Faculty Publications and Presentations

The cryoconite holes of the McMurdo Dry Valleys are simple, closed biogeochemical systems involving water, ice, mineral and organic debris, which serve as ecosystems for consortia of microorganisms. This study is the first to document the seasonal and annual chemical evolution of solutes in cryoconite holes. Samples of glacier ice, frozen cryoconite holes and those containing water were collected during the austral summer of 2005–2006. The isolation age was calculated from the excess Cl‾ in the holes, and varied from 0 to 5 years (a), consistent with the last hot summer when the cryoconite holes were open to the atmosphere. …


2007 Fall Engr333/Biol354 Project Final Report, 2007 Fall Engr333, 2007 Fall Biol354 Dec 2007

2007 Fall Engr333/Biol354 Project Final Report, 2007 Fall Engr333, 2007 Fall Biol354

ENGR 333

The students of Calvin College’s Engineering 333 and Biology 354 classes were given the task of determining “What would it take to make Calvin College Carbon Neutral?” At first glance, it would not appear that classes on Advanced Thermal System Design and Investigations in Plant Ecology would have much in common. However, the biology and engineering students comprising these classes banded together to tackle the problem. Coming to a satisfactory conclusion would require:

  • Creating an inventory of Green House Gas (GHG) emissions and sequestration potential
  • Coming up with detailed solutions to achieve Carbon Neutrality
  • Working out a practical schedule to …


Risk Characterization For Boron And Aquatic Plants And Animals, Basma Damiri Dec 2007

Risk Characterization For Boron And Aquatic Plants And Animals, Basma Damiri

All Theses

In aqueous mixtures, boron can be toxic to plants or animals at relatively low concentrations. Boron may occur at concentrations that can pose risk to plants used in constructed wetland treatment systems designed to treat constituents of concerned in a complex matrix such as flue gas desulfurization water and boron may adversely affect survival, growth, and consequently, plant performance. The three major objectives of this research are: 1) to measure responses of Typha latifolia (seed germination and root and shoot elongation) and Schoenoplectus californicus early seedlings (survival, and shoot and root elongation) to aqueous exposures of boron in diluted FGD …


Constructed Wetlands For The Landscape Nursery Industry: Nutrient Assimilation And Removal, Sarah White Dec 2007

Constructed Wetlands For The Landscape Nursery Industry: Nutrient Assimilation And Removal, Sarah White

All Dissertations

Runoff from nursery operations is considered a potential non-point source contamination. Water quality and quantity are quickly becoming important factors that drive management practices at these facilities. Constructed wetland systems (CWS) are a management tool that can be used by nursery operations to improve water quality both for recycling within nursery production areas and for eventual release from nursery production areas into surrounding surface waters. The overall goal of this research was to optimize nutrient removal efficiencies in CWS. To accomplish this goal, I characterized the following: (1) the P sorption and desorption capacity of several substrates; (2) the effect …


Diversity And Abundance Of Ants At Forest Edges , Eric Paysen Dec 2007

Diversity And Abundance Of Ants At Forest Edges , Eric Paysen

All Dissertations

Fragmented habitats are a common result of human activities that involve the clearing of native vegetation for various land uses. Habitat fragmentation has two primary and inseparable components: habitat loss and insularization. Landscape-level connectivity in fragmented habitats is diminished for many species, and edge characteristics become more important as the edge-to-interior ratio increases. The study of the effects of edges on biodiversity has compelled ecologists to study them for over a century and has influenced the design and management of natural preserves. Invasion of habitats by non-native species is a phenomenon that coincides with the increased human activity typical of …


Influence Of Mercury-Dissolved Organic Matter (Dom) Complexation On Toxicity In Natural Waters, Christina Mcnaughton Dec 2007

Influence Of Mercury-Dissolved Organic Matter (Dom) Complexation On Toxicity In Natural Waters, Christina Mcnaughton

All Dissertations

Global industrialization, coupled with a large biogeochemical cycle that moves mercury through the environment, has resulted in higher mercury concentrations being detected in many environmental compartments. Although the presence of mercury in each compartment has the potential to elicit toxicity, mercury found in natural waters provides the greatest risk, due to the various reactions it can undergo, resulting in a plethora of different species.
Due to the fact that mercury contamination in aquatic systems has the potential to bioaccumulate and biomagnify up the food chain and cause toxicity, understanding the behavior of mercury in these systems is imperative in the …


Geochemical Reconstruction Of Late Holocene Drainage And Mixing In Kluane Lake, Yukon Territory, Janice Brahney, John J. Clague, Brian Menounos, Thomas W. D. Edwards Dec 2007

Geochemical Reconstruction Of Late Holocene Drainage And Mixing In Kluane Lake, Yukon Territory, Janice Brahney, John J. Clague, Brian Menounos, Thomas W. D. Edwards

Watershed Sciences Faculty Publications

The level of Kluane Lake in southwest Yukon Territory, Canada, has fluctuated tens of metres during the late Holocene. Contributions of sediment from different watersheds in the basin over the past 5,000 years were inferred from the elemental geochemistry of Kluane Lake sediment cores. Elements associated with organic material and oxyhydroxides were used to reconstruct redox fluctuations in the hypolimnion of the lake. The data reveal complex relationships between climate and river discharge during the late Holocene. A period of influx of Duke River sediment coincides with a relatively warm climate around 1,300 years BP. Discharge of Slims River into …


How Healthy Is Furnace Brook Dec 2007

How Healthy Is Furnace Brook

Watershed Access Lab Projects

Located across the street from the High school is Furnace Brook. Mike Gilbert and I are conducting an independent Study to determine the relative health of the Furnace Brook. This small stream is a tributary of the South River in Marshfield, Ma. To access the health will we be using a macro-invertebrate biological index as our primary tool? We will also be conducting a riparian survey as well as both a stream profile and flow. To start with we scouted the watershed using both aerial photos and Google earth. After driving to several potential areas we designated three sample sites: …


Sustainability Of Western Kentucky University: An Examination Of Campus Environmental Policies, Performance And Potential For Change, Christian Ryan-Downing Dec 2007

Sustainability Of Western Kentucky University: An Examination Of Campus Environmental Policies, Performance And Potential For Change, Christian Ryan-Downing

Masters Theses & Specialist Projects

Institutions of higher learning are in a pivotal position to address the environmental problems that global society faces now, but response to this challenge requires transformation in priorities and practices. Recognizing the impacts that universities have on the environment and the social and economic costs associated with these impacts, institutions of higher learning are changing policies and management to become more sustainable. Sustainability is defined by the World Commission on Environment and Development as "development that meets the needs of the present without compromising the ability of future generations to meet their own needs" (1987). To evaluate the environmental impacts …


Biological Assessment On The Operation Of Glen Canyon Dam And Proposed Experimental Flows For The Colorado River Below Glen Canyon Dam During The Years 2008-2012, U.S. Department Of The Interior, Bureau Of Reclamation, Upper Colorado Region, Salt Lake City, Utah Dec 2007

Biological Assessment On The Operation Of Glen Canyon Dam And Proposed Experimental Flows For The Colorado River Below Glen Canyon Dam During The Years 2008-2012, U.S. Department Of The Interior, Bureau Of Reclamation, Upper Colorado Region, Salt Lake City, Utah

All U.S. Government Documents (Utah Regional Depository)

This document serves as the biological assessment for the Bureau of Reclamation's (Reclamation) re-initiation of consultation on the operation of Glen Canyon Dam and proposed experimental flows for the Colorado River below Glen Canyon Dam during the years 2008-2012. It is prepared by Reclamation as part of its compliance with the Endangered Species Act of 1973 (ESA), 87 Stat. 884, as amended, 16 U.S.C. section 1531 et seq. This document is designed to facilitate compliance with Sections 7 and 9 of the ESA with respect to potential effects to listed species within the United States (US).


Fisheries Research Report No. 160 - Development Of Biodiversity And Habitat Monitoring Systems For Key Trawl Fisheries In Western Australia., Mervi Kangas, S. Morrison, P. Unsworth, Eva K M Lai, I. Wright, Adrian W. Thomson Dec 2007

Fisheries Research Report No. 160 - Development Of Biodiversity And Habitat Monitoring Systems For Key Trawl Fisheries In Western Australia., Mervi Kangas, S. Morrison, P. Unsworth, Eva K M Lai, I. Wright, Adrian W. Thomson

Fisheries Research Reports

Final FRDC report - Project 2002/038

The need for this project was identified through the ESD Risk Assessment workshops held for the Shark Bay and Exmouth Gulf trawl fisheries in May and October 2001. Bycatch issues in the Shark Bay and Exmouth fisheries were identified as a moderate risk through an Ecological Risk Assessment workshop. A better understanding of the faunal composition and habitat preferences of bycatch species in both trawled and untrawled areas has assisted in determining the level of risk to bycatch species. The project provided baseline data on biodiversity and variability of trawl bycatch on and off …


Western Gray Whales Off Sakhalin Island, Russia: A Joint Russia-U.S. Scientific Investigation July-September 2007, David W. Weller, Amanda L. Bradford, Aimée R. Lang, Hyun Woo Kim, Maxim Sidorenko, Grigory A. Tsidulko, Alexander M. Burdin, Robert L. Brownell Jr. Dec 2007

Western Gray Whales Off Sakhalin Island, Russia: A Joint Russia-U.S. Scientific Investigation July-September 2007, David W. Weller, Amanda L. Bradford, Aimée R. Lang, Hyun Woo Kim, Maxim Sidorenko, Grigory A. Tsidulko, Alexander M. Burdin, Robert L. Brownell Jr.

United States Department of Commerce: Staff Publications

A collaborative Russia-U.S. research program on western gray whales (Eschrichtius robustus) summering off northeastern Sakhalin Island, Russia, has been ongoing since 1995 and has produced important new information on the present day conservation status of this critically endangered population. This interim report reviews preliminary findings from 2007 research activities and combines such with data from previous years, in some cases ranging back to 1994. Photo-identification research conducted off Sakhalin Island in 2007 resulted in the identification of 83 whales, including nine calves and two previously unidentified non-calves. When combined with data from 1994-2006, a catalog of 169 photo-identified …


2007 Annual Report Dec 2007

2007 Annual Report

Nebraska Game and Parks Commission: Publications

Contents:
Letter to Governor Heineman . . . . . . . . . . . . . . . . . 2
Commissioners and Administrators . . . . . . . . . . . 2
Financial Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Recreation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . …


Occurrence And Biological Effect Of Exogenous Steroids In The Elkhorn River, Nebraska, Usa, Alan S. Kolok, Daniel D. Snow, Satomi Kohno, Marlo K. Sellin, Louis J. Guillette Jr. Dec 2007

Occurrence And Biological Effect Of Exogenous Steroids In The Elkhorn River, Nebraska, Usa, Alan S. Kolok, Daniel D. Snow, Satomi Kohno, Marlo K. Sellin, Louis J. Guillette Jr.

Nebraska Water Center: Faculty Publications

Recent studies of surface waters in North America, Japan, and Europe have reported the presence of steroidogenic agents as contaminants. The current study has three objectives: 1) to determine if steroidogenic compounds are present in the Elkhorn River, 2) to determine if sediments collected from the Elkhorn River can act as a source of steroidogenic compounds to aquatic organisms, and 3) to determine if site-specific biological effects are apparent in the hepatic gene expression of fathead minnows. Evidence was obtained using three approaches: 1) deployment of polar organic chemical integrative samplers (POCIS), 2) deployment of caged fathead minnows, and 3) …


Foraging Behavior And Habitat Use By The Carolina Chickadee (Poecile Carolinensis) In West-Central Indiana, Ihan Chen Dec 2007

Foraging Behavior And Habitat Use By The Carolina Chickadee (Poecile Carolinensis) In West-Central Indiana, Ihan Chen

All-Inclusive List of Electronic Theses and Dissertations

I studied the effect of environmental conditions on the foraging behavior of Carolina chickadees (Poecile carolinensis) in Kiewig woods, property of Indiana State University, in West Terre Haute in west-central Indiana. My study method uses Optimal Foraging Theory (Brown 1988) to measure the giving up density (GUD) of Chickadees under different environmental conditions ( different resource abundances, different habitat types, different resource types and different seasons). For my experiment, I set up 24 feeding stations in three kinds of habitats ( open area, secondary growth woods and mature woods) within 4 sites and paired trays in each habitat X site. …


Reinterpreting The Pollen Data From Dos Cabezas, Karl J. Reinhard, Vaughn M. Bryant, Sheila D. Vinton Dec 2007

Reinterpreting The Pollen Data From Dos Cabezas, Karl J. Reinhard, Vaughn M. Bryant, Sheila D. Vinton

School of Natural Resources: Faculty Publications

The published pollen analysis of the Dos Cabezas giants, Geyer et al. (2003), lists variety of purported dietary pollen types. The paper also hypothesises that the giants were poisoned with plant toxins. We have severe reservations about the pollen evidence of diet and poisoning. We suggest that the analysts made several errors in their interpretation. Firstly, some of the discovered pollen types are not prehistoric endemics to the Dos Cabezas region of coastal Peru. These include the pollen of fava beans (cultivated in the Old World), and specified species of agave and sage. We believe that some or all of …


Spatial And Temporal Analysis Of Pharmaceutical Concentrations And Chitobiase Activity In The Upper Tennessee River, Justin M. Conley Dec 2007

Spatial And Temporal Analysis Of Pharmaceutical Concentrations And Chitobiase Activity In The Upper Tennessee River, Justin M. Conley

Masters Theses and Doctoral Dissertations

Tennessee currently has the 3rd highest per capita prescription drug usage rate in the United States, yet no published studies have analyzed Tennessee surface waters for the presence of pharmaceuticals. Composite surface samples were collected upstream and downstream of sewage treatment plants and at the inflow of major tributaries to the Tennessee River to determine the presence and potential sources of pharmaceuticals. Subsurface samples were collected at 7 meters depth to determine differences in occurrence and potential natural degradation. All samples were collected once during each of the four seasons (winter, spring, summer, and fall) to determine yearly variations. Aliquots …