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The Effects Of Control On Coyote Populations: Another Look, Guy E. Connolly

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Population dynamics models are useful for estimating coyote (Canis latrans) population responses to exploitation w well as to hypothetical birth intervention techniques At least 6 coyote simulation models have been developed over the past 25 years. This paper reviews the model developed by Connolly and Longhurst (1975), and identifies some potential improvements based upon new biological information and modem computing technology. The biological concepts embodied in the Connolly–Longhurst (C–L) model seem as valid In 1995 as they were in 1975. Newer studies have tended to reaffirm rather than revise earlier concepts of coyote population mechanics. One significant shortcoming …

Behavior Of Coyotes In Texas, William F. Andelt

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Coyotes (Canis latrans) live in social groups with relatively small territories or as single, non-territorial transients with large home ranges in southern Texas. Coyotes communicate and establish territories through auditory, olfactory, and visual means They consume mammals, fruits, and insects with their diets reflecting difference sin abundance and vulnerability of prey, effects of plant phenology and weather conditions. Coyotes have adapted to human exploration by avoiding humans and their control techniques. Because coyotes habituate to nonlethal control techniques (e.g. frightening devices), I suggest apply frightening devices only when coyotes are a problem. Lethal techniques likely will be most …

Selected Parameters Of The Reproductive Physiology And Endocrinology Of Coyotes, Max S. Amoss Jr., Connie M. Hodges

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

The development of the reproductive system and the dynamics of reproductive hormones were studied in captive male and female coyotes (Canis latrans). Captive male coyotes exhibited incomplete sexual maturation at the first reproductive season (< 12 months of age). Peak serum testosterone levels in 1-year old males were 50% (300 ± 200 vs. 810 ± 300 pg testosterone/ml) and total sperm production was only 10% (57.4 ± 6.6 vs. 558.8 ± 26 x 10⁶ total sperm) of that observed in males older than 1 year. Yearling males were never observed copulating with a female. The sexual maturation of captive female coyotes was less equivocal than their male counterpart's. The pregnancy rate of yearling females was 40% compared to 63% m older females. Average peak serum LH values at the ovulatory surge were 33 ng/ml in yearling …

1995 File Geodatabase Containing Aerial Photos, Pete Reehling, Richard Mckenzie, City Of Tampa Department Of Sanitary Sewers Bay Study Group

Images

The Bay Study Group was created by the City of Tampa in 1976 to monitor the effects of pollution abatement that occurred in Hillsborough Bay when the city’s wastewater treatment plant was upgraded from primary to advanced treatment in 1979. The Bay Study Group documented a remarkable restoration of water quality parameters and biological indicators in Hillsborough Bay from the mid 1980s until 2009, when it was disbanded. This zip Geodatabase file contains the aerial photos for the year 1995.

Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Part Ll: Diesel, Heating Oil, Other Middle Distillates And Waste Oil, Wesley J. Birge, A. J. Grant, J. R. Shaw, M. D. Kercher, D. P. Keogh

KWRRI Research Reports

This report consists of an appendix :Risk Assessment Plan for Petroleum Underground Storage Tanks in Kentucky and a second appendix: Environmental Half-Life and Ecological Effects of PAHs

13.1.8. Life History And Management Of The Blue-Winged Teal, James H. Gammonley, Leigh H. Fredrickson

Waterfowl Management Handbook

The blue-winged teal is a small dabbling duck that is common in North America and northern South America. The species is highly mobile and has an opportunistic life history strategy. Breeding populations respond to variable wetland conditions in the drought-prone prairie regions of the north-central United States and southern Canada. Extensive habitat loss and degradation has occurred on the prairies and on neotropical wintering areas in recent decades. Renewed interest in the ecology and management of blue-winged teal has resulted from these environmental pressures. We review life history characteristics of blue-winged teal that are important to managers. Readers should consult …

Canadian Cooperative Wildlife Health Centre, Volume 3-3, Winter 1995

Canadian Cooperative Wildlife Health Centre: Newsletters and Publications

Loon Survey to Continue in 1996 on a Fully National Scale
Meet More CCWHC Staff
Waterfowl Die-off in Mexico
Newcastle Disease in Double-crested Cormorants - Summer 1995
The Northward March of Raccoon Rabies - Update
Rabbit Viral Hemorrhagic Disease on the Loose in Australia
Verminous pneumonia in red foxes
Common Loons: Complex Causes of Mortality
Parvovirus in Raccoons
Giardia in Voles
Beluga Whales in the St Lawrence Estuary
Insecticide Poisoning in Robins
Emaciated Great Horned Owls
Parvovirus and Trichinosis in Urban Raccoons
Botulism At Pakowki Lake, 1995
The Case of the Killer Cookies: Apparent Chocolate Poisoning of Gulls
Unusual Mortality …

Atrazine And Alachlor Dissipation Rates From Field Experiments, Stephen R. Workman, Andrew D. Ward, Norman R. Fausey, Sue E. Nokes

Biosystems and Agricultural Engineering Faculty Publications

Chemical transport is being monitored in the root zone of three agricultural management systems at the Ohio Management Systems Evaluation Area (OMSEA). Atrazine and alachlor concentration data from soil cores taken to a depth of 0.9 m and partitioned into the increments of 0.0 to 0.15, 0.15 to 0.3, 0.45 to 0.6, and 0.75 to 0.9 m show the herbicides remained in the top 0.15 m of the profile during the 1991 and 1992 growing seasons. The slow movement of herbicides was partly due to below normal rainfall during the period. Since the herbicides have not been transported out of …

Acidic Deposition, Ecosystem Processes, And Nitrogen Saturation In A High Elevation Southern Appalachian Watershed, C. S. Nodvin, H. Van Miegroet, S. E. Lindberg, N. S. Nicholas, D. W. Johnson

Watershed Sciences Faculty Publications

High-elevation red spruce-Fraser fir forests in the Southern Appalachian mountains: 1) receive among the highest rates of atmospheric deposition measured in North America, 2) contain old-growth forests, 3) have shown declines in forest health, 4) have sustained high insect-caused fir mortality, and 5) contain poorly buffered soils and stream systems. High rates of nitrogen and sulphur deposition (sim1900 and sim2200 Eq·ha–1·yr–1, respectively) are dominated by dry and cloud deposition processes. Large leaching fluxes of nitrate-nitrogen (100–1400 Eq·ha–1·yr–1) occur within the soil profile. We have expanded the study to the watershed scale with monitoring of: precipitation, throughfall, stream hydrology, and stream …

Pollution Prevention Manual For Lithographic Printers, Sue Behrns, Kathleen Gordon, Lisa Hurban, Cathy Zeman

Iowa Waste Reduction Center Book Gallery

No abstract provided.

Conceptual Basis For An Index Of Forest Integrity For Upland Coastal Plain Ecosystems, Nicholas R. Brown, Brian Roy Lockhart, Philip A. Tappe, Lynne C. Thompson, Robert C. Weih Jr., Richard A. Williams

Journal of the Arkansas Academy of Science

Following the recent trend to manage natural resources for "sustainability," ecologists, resource managers and policymakers are beginning to think of the management of forest ecosystems in terms of "ecosystem health" or "ecosystem integrity." Biologists are increasingly recognizing that use of chemical assays in assessing the condition of an ecosystem has limited value, and that biological factors, e.g., species diversity and composition, can be useful characters in the analysis of "biotic integrity." An index of biotic integrity (IBI) has been developed for riverine ecosystems in the Midwest U.S., using fish species diversity, indicator population analysis, trophic structure assessment, and physiological abnormalities …

Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Wesley J. Birge, L. C. Taylor, M. D. Kircher, A. J. Grant

KWRRI Research Reports

This study addresses the development of guidelines for corrective actions to be applied to petroleum underground storage tanks (USTs) within the Commonwealth of Kentucky. The report presents findings and recommendations for gasoline, diesel fuel, heating oil, kerosene, jet fuel, and waste oil.

Risk Assessment Plan For Petroleum Underground Storage Tanks In Kentucky, Part 1: Gasoline, Wesley J. Birge, M. D. Kercher, D. P. Keogh, L. C. Taylor

KWRRI Research Reports

This report consists of three appendix:

• I Risk Assessment Procedures and Calculations
• II BTEX Half-life Estimates in Air, Soil, Groundwater, and Surface Water
• III Environmental and Ecological Effects of BTEX

Time To Metamorphosis Of Blue Crab Callinectes Sapidus Megalopae: Effects Of Benthic Macroalgae, Robert D. Brumbaugh, John R. Mcconaugha

OES Faculty Publications

There is growing evidence that postlarvae (megalopae) of the blue crab Callinectes sapidus can slow the progression through the molt cycle while in offshore nursery grounds, and delay metamorphosis until reinvasion of coastal habitat occurs. However, the cues that trigger metamorphosis of megalopae are not well known. This study tested the hypothesis that the time to metamorphosis (TTM) from the postlarval megalops stage to the first crab stage is shortened in the presence of 2 potential macroalgal settlement substrates, Ulva lactuca (Chlorophyta), and Gracilaria spp. (Rhodophyta). Megalopae and test water were collected from 3 locations (offshore, at a coastal inlet, …

Reproductive Success Of Grassland Birds At East-Central Illinois Airports, Eric L. Kershner

Masters Theses

We determined the densities and reproductive success of birds on airport grasslands in east-central Illinois. Seven airports were sampled between 10 April and 15 August 1994 in Clark, Coles, Crawford, Douglas, Edgar, Macon and Richland counties. Nineteen species were detected on the airport grasslands and 147 nests were found representing six different species. Eastern meadowlarks (Sturnella magna) were the most abundant nesting species found; 105 out of the 147 nests (71%). Other nesting species included: grasshopper sparrow (Ammodramus savannarum), savannah sparrow (Passerculus sandwichensis), red-winged blackbird (Agelaius phoeniceus), song sparrow (Melospiza melodia) and horned lark (Eremophilia alpestris). Overall nest success was …

Retrospective Study Of The Impact Of Environ Mental Factors On The Occurrence Of Industrial Accidents In The United Arab Emirates Over A Period Of T E N Years (1984 - 1993), Ahmad Sayed Ibrahim Al Hashemi

Accounting Dissertations

Industrial workers are practically exposed to multiple environmental factors causing accidents in work places. A retrospective study of the impact of environmental factors on the occurrence of industrial accidents was conducted during the period 1984-1993 in Dubai and Northern Emirates, to determine the impact of

environmental factors on the incidence, causes of industrial accidents and the types of injuries among workers. Data were collected from the records of accidents registration in the industrial safety department of the Ministry of Labor and Social Affairs in Dubai Emirate. Industrial visits have been conducted to inspect and identify the existing environmental hazards (viz. …

Nutrient Changes In Saginaw Bay, Lake Huron, After The Establishment Of The Zebra Mussel (Dreissena Polymorpha), Thomas H. Johengen, Thomas F. Nalepa, Gary L. Fahnenstiel, Greg Goudy

United States Department of Commerce: Staff Publications

Concentrations of particulate and dissolved nutrients in Saginaw Bay, Lake Huron, were examined relative to zebra mussel colonization which occurred summer 1991. The magnitude and spatial pattern of changes indicate that mussels had a significant impact on nutrients in Saginaw Bay. Annual means for total suspended solids, particulate organic carbon, particulate phosphorus, and particulate silica in the inner bay were significantly lower in 1992 and 1993 (post-zebra mussel) than in 1991 (pre-zebra mussel). Annual means decreased from 11.5 mg L^-1, 1.45 mg C L^-1 (121 µM), 20.4 µg P L^-1(0.66 µM), and 1.52 mg SiO …

1995 Platte River Basin Ecosystem Symposium Proceedings

Water Current Newsletter

No abstract provided.

Audubon's Perspective On Coyotes, Dede Armentrout

Coyotes in the Southwest: A Compendium of Our Knowledge (Symposium Proceedings, 1995)

Audubon has a membership which probably spans all views of coyotes (Canis latrans) Audubon's staff views coyotes as biologically appropriate predators in most of the Southwest. We believe that they can be an asset to a well-managed ranch, but that they can also cause localized depredation which must be answered.

Our members value predators, including coyotes, for their natural role in ecological systems, including their influence on prey species. Many of our members travel broadly and spend money to view wildlife, and consider it a treat to see and hear coyotes.

Influence Of Vegetated Wetlands On The Water Quality Of Two Glacial Prairie Lakes, Lois Haertel, Walter G. Duffy, Daniel E. Kokesh

Journal of the Minnesota Academy of Science

We investigated the influence of vegetated wetlands on water quality of two eastern South Dakota glacial prairie lakes. Surface water from a 5,880 ha pastured basin drains into a 90 ha upstream Typha wetland and enters Lake Enemy Swim passing 400 m through Typha-Scirpus littoral wetland. A second 1,290 ha basin characterized by row crops and pasture drains into a 260 ha open water slough entering L. Enemy Swim adjacent to Typha-Scirpus littoral wetland. Water enters Lake Cochrane from two smaller drainage basins. Water from a 180 ha basin consisting of a pasture and wet meadow enters the lake after …

Avian Use Of Riparian Corridors And Adjacent Cropland In East-Central Nebraska, Rebecca L. Fitzmaurice

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.

Monomeric And Polymeric Fluoroalkyl Sulfonyl Fluorides, Sulfonate Salts And Sulfonic Acids For Use As Electrolytes And Coatings, Nicolas Noel Hamel

Dissertations and Theses

Monomeric and polymeric fluoroalkyl sulfonyl fluorides, sulfonate salts and sulfonic acids have qualities desirable for use as electrolytes in alternative energy sources such as fuel cells and solid polymer electrolyte lithium batteries. Since the nature of the fluoroalkyl group affects the properties of these compounds, new monomeric and polymeric fluoroalkyl sulfonyl fluorides, sulfonate salts and sulfonic acids were prepared in this work. Simple compounds prepared in this work were: the fluoroalkyl sulfonyl fluorides, sulfonate salts and sulfonic acid CHF (OCF₂CF2SO₂ F)₂ CF₂(OCF₂CF₂SO₂F) ₂ CH₂(OCF₂CF₂SO3Na) ₂ CF₂(OCF₂CF₂SO3 ) ₂Ca , CF₂(OCF₂CF₂SO3H) ₂ prepared by means of electrochemical fluorination; FC (CF3 ) …

Some Relationships Between Sedimentary Trace Metal Concentrations And Freshwater Phytoplankton And Sedimentary Diatom Species Composition, Allan Hayes Vogel

Dissertations and Theses

Sediments from 21 Oregon lakes were analyzed for seven metals (Fe, Mn, Zn, Cu, Co, Ni, V) in three forms (exchangeable, organic+sulfides, and oxyhydroxides+ oxides+ carbonates) using a sequential fractionation procedure. The summer epilimnetic filterable concentration of an eighth (Mo) was also determined. Sedimentary diatom remains and summer phytoplankton populations of the lakes were correlated with the 22 metal parameters and with conservative water chemistry parameters, estimators of lake productivity, and watershed geology. Both the sedimentary metals and the two populations of primary producers correlated best with the ecoregions of Omernik and Gallant (1986). A number of species possessed correlations …

Radon Reduction, Improvement Of Indoor Air Quality, And Energy Savings Through An Original Solar Ventilation System, Heather E. Rhoads

Dissertations and Theses @ UNI

This study evaluated the improvement of indoor air quality and energy savings achieved, by an original solar ventilation system installed at test sites exhibiting elevated radon levels. Conventional residential energy conservation measures that limit air exchange rates between the indoors and outdoors have been shown to increase concentrations of radioactive radon decay products as well as other indoor air contaminants. Growing concern about radon lung cancer risks, carbon monoxide poisoning, and the "sick building syndrome" have increased demand for improved indoor air quality. Due to added heating and cooling loads, ventilation generally incurs substantial installation and operational costs. All commercially …

Impacts Of Irrigation Development On Anadromous Fish In The Yakima River Basin, Washington, Robert L. Tuck

All Master's Theses

Prior to Euroamerican development, the Yakima River Basin was a major producer of salmon. Total runs of approximately 800,000 have declined to 3,000-5,000, or less than 1% of original run size. Three species are extinct in the basin, including summer chinook, coho, and sockeye.

Irrigation development, including the construction of unscreened diversions, the blockage of spawning and rearing habitat by reservoir dams, and the dewatering of spawning and rearing habitat, began in the mid-1800's and today totals approximately 500,000 acres. Historical records provide a wealth of information documenting irrigation development and its consequences on anadromous fish populations.

Land Management Report For The Kent River Catchment, Sue Kelly

Natural resources published reports

The Kent River Catchment is located in the South-West of Western Australia, approximately between latitudes 34° 15' and 35° 10' South and longitudes 116° 45" and 117° 50° East. The north-eastern boundary of the catchment stretches to the Albany Highway at Tenterden, and from there the catchment curves towards Rocky Gully before continuing to the South Coast (Figure 1.1.1). The catchment is located within the Shires of Cranbrook, Plantagenet and Denmark.

The Kent River Catchment is part of Basin 604, which is the Water Authority descriptor for the Kent, Bow and Kordabup River catchments collectively. Basin 604 has a total …

Proline Concentration As An Indicator Of The Level Of Salt Tolerance, Philomena Y. Rosalie

Theses : Honours

Each year approximately 20 million hectares of land become affected by increasing salinity. Salt tolerant plants are being used to rehabilitate salt affected areas. Plants use a variety of mechanisms to adapt to salt in their environments. Glycophytes tolerate low to moderate levels of salt while halophytes can tolerate very high salt levels. Many basic physiological attributes have been suggested as important components of a salt tolerant phenotype. These include, influx and/or efflux of ions across plasma membrane and the tonoplast, modification of membrane composition and synthesis of compatible solutes such as soluble carbohydrates, glycine betaines and proline. The project …

Feeding Responses To Predator-Based Repellents In The Mountain Beaver (Aplodontia Rufa), Gisela Epple, J. Russell Mason, Evgueny Aronov, Dale L. Nolte, Richard Hartz, Ron Kaloostian, Dan Campbell, Amos Smith Iii

United States Department of Agriculture Wildlife Services: Staff Publications

Predator odors have potential as feeding repellents for mammalian herbivores, including Aplodontia rufa, the mountain beaver. However, the repellency of major chemical constituents of natural predator scents for this species has not been evaluated. In this study, the effects of several synthetic sulfur compounds from predator scents on feeding by mountain beavers were assessed and compared to the effects of coyote (Canis latrans) urine. Retrieval of food by mountain beavers from bowls scented with either coyote urine, diluted with water to different concentrations, synthetic components of predator scents, or control odorants was studied. The following synthetic compounds …

Grain Legume And Canola Autumn Updates 1995, David Williams

Grain and other field crops published reports

Grain legumes

- Chickpea

- Field pea

- Lentil

- Faba beans

Canola essentials:

Site selection -Paddock selection is critical for a successful canola crop. Avoid paddocks with waterlogging, wind erosion and broadleaf weeds - particularly wild radish, turnip, mustard and doublegees.

Soil type - Canela grows well on most soil types, however it prefers well drained gravel soils, red loams, sandy _loams and deeper duplex soils. Soil pH levels (in CaCl_²) of 4.5 to 8.0 are suitable. Soil test paddock for pH, phosphorus, and potassium levels.

Rotation - Grow canola after manipulated pasture, lupins or other grain …

Soil Information Sheets For Ravensthorpe And Part Of The Jerramungup Agricultural Areas, Tim D. Overheu, Landcare Western Australia.

Agriculture reports

The soil information sheets produced for the Ravensthorpe Land Conservation District provide an easy reference guide to the soils for part of the Jerramungup and Ravensthorpe agricultural areas, and provide land use and soil management recommendations. Soil data are shown on the front of the sheet, and land use and land management information is given on the back. The information should be used as a guide, and encourage the user to seek further information through the relevant people and organisations.