Digital Commons Network^™

Field Sampling And Necropsy Examination Of Fish, A. S. Kane, A. Baya, R. Reimschuessel, K. M. St. Pé, C. A. Poukish, C. P. Driscoll

Virginia Journal of Science

This paper presents an overview of observational and fish sampling tech­niques for investigating fish lesions, morbidity and mortality. These sam­pling techniques and investigations are much like detective work and require attention to detail, common sense, technical proficiency and experience. To solve the mystery of a fish kill, the investigator must use available evidence and clues to piece together a series of events that often have long since passed. The cause of these field events may be chemical, biological or physical; more often, it is some combination of these. An initial categorization approach may be used to reduce the great number …

Pcr And Fish Detection Extends The Range Of Pfiesteria Piscicida In Estuarine Waters, P. A. Rublee, J. Kempton, E. Schaefer, J.M. Burkholder, H. B. Glasgow Jr., David Oldach

Virginia Journal of Science

PCR and fluorescent in situ hybridization probes were used to assay for the presence of the dinoflagellate Pfiesteria piscicida in 170 estuarine water samples collected from New York to northern Florida. 20% of samples tested positive for the presence of P. piscicida, including sites where fish kills due to Pfiesteria have occurred and sites where there was no historical evidence of such events. The results extend the known range of P. piscicida northward to Long Island, New York. The results also suggest that P. piscicida is common, and normally benign, inhabitatant of estuarine waters of the eastern US.

Designing An Analytic Deliberative Process For Environmental Health Policy Making In The U.S. Nuclear Weapons Complex, Seth Tuler, Thomas Webler

RISK: Health, Safety & Environment (1990-2002)

Using a National Research Council Report as a centerpiece, Drs. Tuler and Webler evaluate the effectiveness of a conceptual approach to risk policy-making.

Alpha-Chloralose Immobilization Of Rock Doves In Ohio, Jerrold L. Belant, Thomas W. Seamans

United States Department of Agriculture Wildlife Services: Staff Publications

To improve capture efficacy of rock doves (Columba livia) in nuisance situations, we reevaluated the effectiveness of three dosages (60, 120 and 180 mg/kg) of alpha-chloralose (AC). Responses to immobilization using 180 mg/kg AC also were compared in rock doves deprived of food for 16 hr and not food deprived. Mean (±SE) time to first effects (33 ± 2 min) and mean time to capture (94 ± 5 min) were significantly less for rock doves receiving 180 mg/kg than for rock doves receiving lower dosages (≥53 ± 3 min and ≥153 ± 17 min, respectively). Ten, 10, and …

Demonstration Of Tritrichomonas Foetus In The External Genitalia And Of Specific Antibodies In Preputial Secretions Of Naturally Infected Bulls, J. C. Rhyan, K. L. Wilson, B. Wagner, M. L. Anderson, R. H. Bondurant, D. E. Burgess, G. K. Mutwiri, L. B. Corbeil

United States Department of Agriculture Wildlife Services: Staff Publications

Portions of penis and prepuce were collected from 24 bulls with current or recent Tritrichomonas foetus infection. Epididymides were collected from seven of the bulls, and seminal vesicles and prostate were collected from four. Following immunohistochemical staining with two monoclonal antibodies (34.7C4.4 and TF1.15) prepared against T. foetus surface antigens, trichomonads were identified in sections from 15 of the bulls. Organisms were most often located in penile crypts in the midshaft and caudal regions and less often in preputial crypts. Trichomonads were not observed in sections from other genitalia or in subepithelial tissue. T. foetus antigen, however, was present in …

The Western Australian Environmental Protection Authority (Epa) : Its Structure, Functions And Performance 1971-1996, Vincent Cusack

Theses : Honours

This study examines the effectiveness of the Western Australian Environmental Protection Authority (EPA), from its inception in 1971 to 1996. While environmental concerns have risen considerably in recent times, environmental awareness can be traced back to early historical beginnings. Yet, despite this initial awareness it took some time before environmental problems permeated the public consciousness, to occupy the political agenda. However, in the early 1970s, governments throughout the First World responded to research and heightened awareness of environmental concerns, with specific legislation to protect the environment. A common feature of the legislation, was the provision for a main administrative body …

Managing Mountain Bike Impacts In The South West Of Western Australia : Combining Biophysical Impact Studies With Rider Preferences For Better Trail Design, Ute Goeft

Theses : Honours

This thesis examines the environmental impacts of mountain bikes on trails in the southwest of Western Australia and the preferences, perceptions, trail use and demographics of mountain bike riders in that region. This information is important for resource managers and trail developers to ensure that the trails that are provided and planned for mountain bike use in the region are environmentally appropriate and acceptable to users. The environmental impacts were examined through biophysical studies, which investigated soil loss, soil compaction and vegetation damage on and adjacent to mountain bike trails over a period of six months. A mountain bike racing …

Salinity And Hydrology Of The Fence Road Catchment : A Focus Catchment Of The Blackwood Basin, Ben Whitfield

Resource management technical reports

It is the clearing of native vegetation and replacement with lower water-use annual crops and pastures that is responsible for the developing salinity problem. Traditional farming practices have led to increased recharge to the groundwater systems resulting in increased storage and/or greater areas or rates of discharge. Groundwater monitoring has revealed variable rates of rise throughout the Fence Road catchment, from static to 0.6 metres per year, in a period of average to below average rainfall.

Avon And Upper Hotham Region Natural Resource Atlas, Sarah Weaving, Jason Batory

All other publications

The Avon and Upper Hotham Region Atlas is one of a series of Natural Resource Atlases covering the agricultural region of Western Australia. The purpose of the Atlas is to provide data for local people who manage or have an interest in natural resources. This includes the members of Land Conservation District Committees (LCDC), catchment groups, local government, non-government organisations, conservation groups, schools and libraries.

The aim of this publication is to bring together land and natural resource information from a number of sources and present it in a clear and accessible way. The data covers a number of topics …

Social And Economic Data For Regional And Natural Resource Management In Western Australia's South West Catchment : Results Of The 2006 Landholder Survey, Department Of Agriculture And Food, Western Australia, South West Catchments Council (W.A.), Michael Hanslip, Australia. Bureau Of Rural Sciences.

All other publications

This report presents a summary of the key findings from a mailed survey to 2,000 landholders in the South West Region of Western Australia in 2006. The survey gathered information on the key social and economic factors affecting landholder decision-making about the adoption of practices expected to improve the management of natural resources in the region. The response rate for the survey was 69.4%.

The South West Catchment Council, Western Australian Department of Agriculture and Food and the Bureau of Rural Sciences were key project partners. Funding was from a mix of national, state and regional programmes, including the Natural …

A Woman's Field Is Made At Night: Gendered Land Rights And Norms In Burkina Faso, Michael Kevane, Leslie C. Gray

Economics

Gendered social norms and institutions are important determinants of agricultural activities in southwestern Burkina Faso. This paper argues that gendered land tenure, in particular, has effects on equity and efficiency. The usual view of women as holders of secondary, or indirect, rights to land must be supplemented by a more nuanced understanding of tenure. Women's rights are in fact considerably more complex than the simple right to fields from their husbands. First, women's rights to property obtained from men may be coupled with other rights and obligations. In many ethnic groups, women have share rights to the harvest of their …

Department Of Fisheries Annual Report 1998/99, Department Of Fisheries, Western Australia

Department of Fisheries Annual Reports

In accordance with Section 62 of the Financial Administration and Audit Act 1985, I submit for your information and presentation to Parliament the Annual Report of the Fisheries Department for the financial year ending 30 June 1999.

The Annual Report of Fisheries WA has been prepared in accordance with the provisions of the Financial and Administration and Audit Act 1985 and Secon 263 of the Fish Resouces Management Act 1994.

Comparison Of An Enzyme-Linked Immunosorbent Assay (Elisa) To Gas Chromatography (Gc) - Measurement Of Polychlorinated Biphenyls (Pcbs) In Selected Us Fish Extracts, James L. Zajicek, Donald E. Tillitt, Ted R. Schwartz, Christopher J. Schmitt, Robert O. Harrison

United States Geological Survey: Staff Publications

The analysis of PCBs in fish tissues by immunoassay methods was evaluated using fish collected from a US monitoring program, the National Contaminant Biomonitoring Program of the US Department of Interior, Fish and Wildlife Service. Selected composite whole fish samples, which represented widely varying concentrations and sources of PCBs, were extracted and subjected to congener PCB analysis by gas chromatography (GC) and total PCB analysis using an ELISA (ePCBs) calibrated against technical Aroclor 1248. PCB congener patterns in these fishes were different from the patterns found in commercial Aroclors or their combinations as demonstrated by principal component analysis of normalized …

Continuous Deflection Separation Of Stormwater Particulates, Tracy S. Schwarz, Scott A. Wells

Civil and Environmental Engineering Faculty Publications and Presentations

Capture of stormwater particulate matter is of concern to watershed managers trying to meet water quality guidelines by removing toxics associated with particulates from natural water bodies. A laboratory investigation into particle removal efficiency of a prototype Continuous Deflective Separation (CDS) device was made in the laboratory. Particle size distributions were obtained for roadway drainage surfaces. These distributions were used to assess the predicted performance of a CDS unit in the field.

Flow rates in the laboratory tests ranged from 125 GPM (7.9 l/s) to 270 GPM (17.0 l/s). Screen sizes used for testing were 1200 m and 2400 m. …

ข่าวสิ่งแวดล้อม : ตุลาคม-ธันวาคม 2541

Thai Environment

No abstract provided.

การจัดการขยะชุมชนอย่างมีประสิทธิภาพ, สุนีย์ มัลิกะมาลย์

Thai Environment

No abstract provided.

Assessment Of The Availability And Exploitation Of Hydric Resources In The Choquenaira Community, Luis Lizardo Iturry Urquizo

Theses and Dissertations

The precipitation data of the El Alto, Tambillo and Comanche stations are homogenous and consistent. The meteorological data from Irpa Chico, Collana and Viacha are consistent, but heterogeneous. The monthly precipitation in Viacha in December, January, March and April are better examples of a normal distribution in comparison to the months of October, November and February. The average annual precipitation in Viacha, in a thirty-four year time period, is 559 mm. Some 76% of this precipitation occurs in November to March. The minimum precipitation in Viacha, with an 80% probability of absence for the vegetative period, from October to April …

Effect Of The Environmental Parameters On The Distribution Of Foraminifera In The Coastal Area Of Ras Al Khaimah, U.A.E., Naama Obaid Saif Al-Kaabi

Theses

Twenty samples of sea water and twenty samples of sediment were collected from the off shore area of Ras AI-Khaimah to find out the relationships between environmental parameters, abundance of foraminifera, and ratio of living to dead foraminifera.

Analysis of sea water for the environmental parameters includs, temperature, salinity and nutrient salts (nitrate, nitrite, silicate, phosphate and amonia). Organic mattar, and total carbonate were measured in the bottom sediments. Grain size analysis of the bottom sediments was done using seiving method. The foraminiferal species were picked, counted and photographed using the SEM. The ratio of dead to living forams was …

User-Responsivity And Environment-Sensitivity Consideration For State-Funded Housing In Alain City, Nassra Saif Al Daheri

Theses

Massive housing projects have shown that prospective users are rarely given the opportunity to participate in the design decisions. Subsequently, such schemes commonly fail to accommodate all their needs. In the Emirate of Abu Dhabi, the housing projects that aim at resettling of Bedouin into newly developed urban communities are state-funded. Many of these houses that were built in the late seventies and early eighties were transferred back to the state (in a very bad condition due to the users random modifications and additions) in exchange of newer better houses. The lack of an adaptive design concept that can accommodate …

Evaluating Oral Histories For Restoration Ecology, Margaret Robertson

Theses : Honours

Significant ecological restoration is required in the agricultural regions of south-western Australia. Environmental history, including local knowledge based on long-term observation of the biophysical environment, can help guide this process. Scientists already use local anecdotal information because other information sources are absent or too recent, yet they are often skeptical of its veracity. This study focused on whether environmental oral histories can be evaluated for factual accuracy and their capacity to be useful in the restoration process. Some of the complexities associated with linking environmental histories with restoration ecology, and the role played by oral histories in establishing the link …

Spatial Distribution And Habitat Characterization Of Anopheline Mosquito Larvae In Western Kenya, Noboru Minakawa, Clifford M. Mutero, John I. Githure, John C. Beier, Guiyun Yan

All Peer-Reviewed Publications

Studies were conducted to characterize larval habitats of anopheline mosquitoes and to analyze spatial heterogeneity of mosquito species in the Suba District of western Kenya. A total of 128 aquatic habitats containing mosquito larvae were sampled, and 2,209 anopheline and 10,538 culicine larvae were collected. The habitats were characterized based on size, pH, distance to the nearest house and to the shore of Lake Victoria, coverage of canopy, surface debris, algae and emergent plants, turbidity, substrate, and habitat types. Microscopic identification of third and fourth-instar anopheline larvae did not yield any Anopheles funestus or other anophelines. A total of 829 …

Fire On The Plateau: Conflict And Endurance In The American Southwest, Charles F. Wilkinson

Books, Reports, and Studies

This digital resource contains only an abstract, cover image and table of contents information from the published book.

Print copy of book is available in the University of Colorado’s Wise Law Library: http://lawpac.colorado.edu/record=b235993~S0

Contents: Introduction : The Colorado Plateau -- PART ONE : BEDROCK: Route 66 -- Mexican hat -- Deseret -- Coyote -- Vishnu -- PART TWO : CONFLICTS AND CONQUESTS: Kykotsmovi -- Jack -- Uintah -- Phoenix -- Rosa -- Cretaceous -- Junction Dam -- PART THREE : ENDURANCE: Cedar Mesa Canyon -- Black Mesa -- Kachina -- Druid Arch -- Mount Blanca -- Afterword

From Reclamation To Sustainability: Water, Agriculture, And The Environment In The American West, Lawrence J. Macdonnell

Books, Reports, and Studies

This digital resource contains only an abstract, cover image and table of contents information from the published book.

Print copy of book is available in the University of Colorado’s Wise Law Library: http://lawpac.colorado.edu/record=b236740~S0

Contents: Introduction : Living in a land of limited water -- PART 1. THE LOWER ARKANSAS VALLEY : AFTER THE WATER IS GONE: Colorado's Arkansas River -- Watering and cultivating the prairie -- Stretching a limited water supply -- Irrigation water for sale? -- A hostile takeover? -- Looking ahead -- PART 2. THE GRAND VALLEY, COLORADO : WHERE FRUIT, FISH, AND GROWTH COLLIDE: Growing peaches in …

Uneconomic Growth: In Theory, In Fact, In History, And In Relation To Globalization, Herman E. Daly

Clemens Lecture Series

No abstract provided.

200,000 Years Of Climate Change Recorded In Eolian Sediments Of The High Plains Of Eastern Colorado And Western Nebraska, Daniel R. Muhs, James Swinehart, David Loope, John N. Aleinikoff, Josh Been

United States Geological Survey: Staff Publications

Loess and eolian sand cover vast areas of the western Great Plains of Nebraska, Kansas and Colorado (Fig. 1). In recent studies of Quaternary climate change, there has been a renewed interest in loess and eolian sand. Much of the attention now given to loess stems from new studies of long loess sequences that contain detailed records of Quaternary glacial-interglacial cycles, thought to be a terrestrial equivalent to the foraminiferal oxygen isotope record in deep-sea sediments (Fig. 2). Loess is also a direct record of atmospheric circulation, and identification of loess paleowinds in the geologic record can test atmospheric general …

Trapping Considerations For The Fossorial Pocket Gopher, Gary W. Witmer, Rex Marsh, George Matschke

United States Department of Agriculture Wildlife Services: Staff Publications

Fossorial mammals such as the pocket gopher (Thomomys spp.) are well adapted to life in an underground closed burrow system. These animals can have considerable influence on ecosystems and can cause significant damage to agricultural crops, forest resources, and field machinery. The research and management of pocket gopher populations poses many challenges to land managers and research biologists. Both live-trapping for research purposes and kill trapping for control purposes are important tools for working with pocket gophers. Trapping can be an effective and efficient tool if the proper traps are used and trappers are trained to place traps properly …

Sub-Lethal Effects Of Hypoxia/Hypercapnia On Callinectes Sapidus In The York River Estuary, Virginia, Sandra R. Hypes

Theses and Dissertations

This research examined effects of hypoxic environments on blue crabs, Callinectes sapidus in an estuarine environment. Hypoxic conditions were treated as a multiple stressor involving low dissolved oxygen (D.O.), increased carbon dioxide (hypercapnia), and low pH concurrently. The objectives were to: 1) identify hypoxiahypercapnia by monitoring D.O. and pH as an indicator of hypercapnia in shallow regions of the York River, 2) measure blue crab abundance, and 3) describe blue crab responses to hypoxiahypercapnia via field work at Taskinas Creek and lab measurements of respiration. Ambient D.O. and pH were positively correlated in the Taskinas Creek and York River sites …

Regional Ecology Of The St. Elias Mountain Parks: A Synthesis With Management Implications (British Columbia, Yukon, Alaska), Ryan Kenneth Danby

Theses and Dissertations (Comprehensive)

The St. Elias region of North America occupies portions of British Columbia, Alaska, and the Yukon Territory and comprises a network of public lands and protected areas managed by a variety of agencies. This thesis characterizes and analyzes the broad- scale, or regional, ecology of these lands and provides an assessment of the implications this has for ecosystem-based management—particularly as it relates to intergovernmental cooperation. A multi-stage, map-based, multidisciplinary process is used to synthesize information on the region’s physical, biological, and institutional environments. The fields of conservation biology and landscape ecology provide theoretical foundations for analysis. The ecological synthesis and …

Natural Disturbance And Land Cover Patterns In A Mountainous, Sub-Arctic Environment (Yukon), A. Bruce Wurtele

Theses and Dissertations (Comprehensive)

The dynamics of landscape pattern and disturbance were studied in the ‘green belt’ area of Kluane National Park, Yukon. White spruce montane forests and various sub-alpine and alpine vegetation communities dominate the study area, adjoining the Kluane Ranges of the St. Elias Mountains. Combining theory on landscape structure and function, the relationships of disturbance regimes and landscape pattern are examined. The landscape mosaic was mapped from classification of multispectral Landsat Thematic Mapper imagery. Landscape pattern was measured using quantitative indices of patch, class, and landscape attributes. Natural disturbance regimes, important to land cover development in the region, include fire, insect …

Quantitation Of Pyrethrum Residues In Brown Tree Snakes, John J. Johnston, Carol A. Furcolow, Stephanie A. Volz, Richard E. Mauldin, Thomas M. Primus, Peter J. Savarie, Joe E. Brooks

United States Department of Agriculture Wildlife Services: Staff Publications

A reversed-phase solid-phase extraction–gas chromatography (SPE–GC)–electron capture detection method is developed to quantitate individual rethrin residues in pyrethrum-exposed brown tree snakes. Aliquots (6 g) of homogenized snake tissue are extracted with 10 mL acetonitrile. The rethrins are recovered from the acetonitrile extract and concentrated using C₈ SPE. The rethrins are eluted from the SPE column with pentane, evaporated to near dryness, and reconstituted to 1 mL with 1-propanol. Individual rethrins are quantitated using GC analysis of the 1-propanol solution. Method limits of detection for rethrins range from 0.63 to 6.51 ng/g. The mean recovery for all rethrins is 70.8% …