Natural Resources Management and Policy Commons^™

Impacts Of House Mice On Crops In Australia: Costs And Damage, Peter R. Brown, Grant R. Singleton

Human Conflicts with Wildlife: 2002 Symposium

Rodents cause serious losses to crops in many different parts of the world. The house mouse (Mus domesticus, Schwarz and Schwarz 1943) is a serious pest to agriculture in Australia. The impacts of house mouse damage to crops in Australia were examined. Plagues of mice (> 1,000 mice/ha) cause enormous economic and social stress to rural communities in Australia. The mouse plague in 1993/94 caused about US$60 million in damage to crops, intensive livestock industries, and rural communities. The impact of mouse plagues is generally well understood, but there is a dearth of knowledge about the relationship between …

Development Of A Model To Assess Rodent Control In Swine Facilities, Kurt C. Vercauteren, Scott E. Hygnstrom, Robert M. Timm, Robert M. Corrigan, John Beller, Larry L. Bitney, Michael C. Brumm, Daniel Meyer, Dallas R. Virchow, Robert W. Wills

Human Conflicts with Wildlife: 2002 Symposium

At the request, and with the support, of the National Pork Producers Council we are conducting a comprehensive economic analysis of rodent control in swine production facilities. The authors represent an interdisciplinary working group that has been assembled to identify all necessary input variables and values associated with rodent damage and control. The working group consists of specialists in swine production, facilities management, agricultural economics, swine health, rodent control, the pest management industry, systems modeling, and distance education. We incorporated data from the scientific literature and personal experience into an interactive STELLA systems model. The model generates benefit-cost analyses and …

Using Bioeconomic Models To Maximize Benefits From Vertebrate Pest Control: Lamb Predation By Feral Pigs, David Choquenot, Jim Hone

Human Conflicts with Wildlife: 2002 Symposium

The question “When should investment in pest control stop?” either explicitly or implicitly underpins decisions concerning pest control made at every level of enterprise or government, regardless of whether these decisions are tactical or strategic. Bioeconomic modeling provides a quantitative framework for considering the benefits and costs of alternative pest control strategies. In this case study, we develop 3 bioeconomic models that examine strategies based on helicopter shooting and 1080 poisoning, for reducing feral pig (Sus scrofa) predation of newborn lambs in wool-growing enterprises located in Australia’s rangelands. In the first model, marginal analysis indicated that helicopter shooting …

Economics Of Predation Management In Relation To Agriculture, Wildlife, And Human Health And Safety, Michael J. Bodenchuk, J. Russell Mason, William C. Pitt

Human Conflicts with Wildlife: 2002 Symposium

Predation management is controversial and much recent debate has focused on the cost of management efforts. This manuscript considers the cost of predators to agriculture, big game or threatened and endangered species management, and human health and safety. Subsequently, the cost of efforts to manage predation in these contexts is discussed, and benefit:cost ratios are calculated. When properly applied, predation management shows benefit:cost ratios of between 3:1 to 27:1 for agriculture and 2:1 to 22:1 for wildlife protection. For human health and safety, benefit:cost ratios are more difficult to calculate, but we argue that benefits outweigh costs in many different …

The Economics Of Managing Beding's Ground Squirrel In Alfalfa In Northeastern California, Desley A. Whisson, Steve B. Orloff, Donald L. Lancaster

Human Conflicts with Wildlife: 2002 Symposium

We used estimates of yield loss from 1995 to 1999 and the reported costs and effectiveness of available control methods to provide a basis for developing a cost-effective management strategy for Belding’s ground squirrels in alfalfa in northern California. Mean annual losses varied between US$ 110/ha and US$ 300/ha of alfalfa. Growers usually spend less than US$ 25/ha on control methods that are implemented haphazardly and provide poor control. We suggest that growers can afford to spend more on control methods such as burrow fumigation or exclusion fencing that previously have been viewed as being too expensive. Control efforts should …

Economic Tools For Managing Impacts Of Urban Canada Geese, Nicole H. Mccoy

Human Conflicts with Wildlife: 2002 Symposium

Management of urban Canada geese impacts can be assisted by the use of economic analyses of both the problem and the proposed solution. Management of a species that is both geographically mobile and stationary, protected by the Migratory Bird Act of 1918, and loved by much of the public while posing a significant risk of damage to both private and public property is a difficult task. The issue is further complicated by the scope and scale of urban goose impacts. While the presence of urban Canada geese results in both positive and negative impacts, this paper will focus primarily on …

Evaluation Of Wildlife Damage To Forests In Germany, Markus J. Schaller

Human Conflicts with Wildlife: 2002 Symposium

Legal regulations concerning wildlife damage in Germany are totally different from regulations in the United States. In certain cases German game laws provide the right to compensation for wildlife damage to forests for forest owners. But not everyone has to be compensated. Liability exists only for damage caused by hooved game, rabbits, and pheasants, and only to important local tree species (Hauptholzarten). If, for example, red deer damage an afforestation of Norway spruce (Picea abies) by browsing, normally the shooting tenant has to compensate for the damage. The most important types of damage to forests in Germany are …

The Costs Of Bird Strikes And Bird Strike Prevention, John R. Allan

Human Conflicts with Wildlife: 2002 Symposium

Collisions between birds (and other wildlife) and aircraft are known to cause substantial losses to the aviation industry in terms of damage and delays every year. Techniques exist to control bird numbers on airfields and hence to reduce the number of wildlife strikes, but they are applied at widely different levels from airport to airport. Some of this variation may be due to differing levels of strike-risk at the different sites, but much of it is due to the unwillingness or inability of the airports concerned to invest in bird strike prevention. Part of the reason for this reluctance to …

Pieces Of Silver: Examples Of The Economic Impact And Management Of The Silver Gull (Larus Novaehollandiae) In Melbourne, Australia, Ian D. Temby

Human Conflicts with Wildlife: 2002 Symposium

Like a number of gull species, the silver gull Larus novaehollandiae has expanded its population in response to human food subsidy. The major anthropogenic food source is food waste at rubbish tips. Other sources of human food waste are also exploited. Many problems result from the activities of these birds, including human health and safety, economic impacts, and effects on the conservation of other species. My study examines aspects of the economic impacts of the silver gull on the human community of the Greater Melbourne Area comprising approximately 4,065 km² (1,569 square miles). My data collection method involves identifying …

Wildlife Impacts On Forest Resources, Dale L. Nolte, Mike Dykzeul

Human Conflicts with Wildlife: 2002 Symposium

The negative impacts of wildlife on forest resources can be extensive. This paper provides some insight into the economic and environmental consequences of wildlife damage to forest resources and a brief overview of the damage inflicted by select wildlife species. Probably the most thorough measure of wildlife damage to forests in the Pacific Northwest was initiated in 1963 and 1964 by the Committee on Animal Damage Survey of the Western Forestry and Conservation Association. This study estimated that 30% of the tree seedlings planted would be damaged if no preventive practices were implemented; stocking rates on unprotected sites were 75% …

The Economic Impact Of Invasive Species To Wildlife Services’ Cooperators, David L. Bergman, Monte D. Chandler, Adrienne Locklear

Human Conflicts with Wildlife: 2002 Symposium

On February 3, 1999, the president of the United States signed an Executive Order 13112 on invasive species. Each federal agency was directed to detect and respond rapidly to control populations of invasive species, monitor invasive species populations, provide for restoration of native species and habitat conditions, conduct research on invasive species and develop technologies to prevent their introduction, and promote public education on invasive species and the means to address them. The United States Department of Agriculture’s Wildlife Services Program fulfills a federal responsibility for helping solve problems which occur when human activity and wildlife, including invasive species, are …

Has An Integrated Pest Management Approach Reduced Blackbird Damage To Sunflower?, George M. Linz, Brian D. Peer, H. Jeffrey Homan, Ryan L. Wimberly, David L. Bergman, William J. Bleier

Human Conflicts with Wildlife: 2002 Symposium

Since the mid-1970s many new and modified damage abatement methods have been implemented to reduce blackbird damage to ripening sunflower in the northern Great Plains. Concurrently, estimates were made of breeding blackbird densities and sunflower damage to track changes in population size and chart progress toward reducing damage. Breeding density estimates were made at both the regional and county levels, whereas sunflower damage estimates were made at the county level only. Periodic regional estimates of breeding densities, between 1967 and 1998, showed that numbers of red-winged blackbirds (Agelaius phoeniceus) and yellow-headed blackbirds (Xanthocephalus xanthocephalus) did not …

Evaluation And Assessment Of Agrichemical Contaminants In The Creighton, Ne Area, Mark E. Burbach, Roy F. Spalding

School of Natural Resources: Faculty Publications

The Lewis and Clark Natural Resources District (LCNRD) has reported elevated nitrate- nitrogen (NO3-N) concentrations in ground water near Creighton, NE. The U.S. Environmental Protection Agency has set a maximum contaminant level (MCL) of 10 mg/L for NO3-N in public water supplies. NO3-N in the city of Creighton municipal drinking water wells and several rural domestic and irrigation wells have exceeded the MCL. The city of Creighton has constructed a reverse-osmosis water treatment system at a cost of $1.1 million to reduce the NO3-N concentration below the MCL in its water supply. In response to this NO3-N contamination problem the …

Bulletin 4418 - Nebru Focus Catchment Report, Agriculture Western Australia

Bulletins 4000 -

Nehru Focus Catchment is located in the upper reaches of the Arrowsmith Catchment. It is roughly bounded by Sunset Road in the north, the north-south Kadathinni Hills to the east, the Three Springs - Eneabba Road to the south and Reed Road in the west. It changes in elevation from 372 metres Australian Height Datum (AHD) at roughly the intersection of Nehru Rd the Kadathinni Hills to the east and 220 metres AHD near the outlet of the catchment into the Arrowsmith River.

The total area of the catchment is just over 7,400 hectares.

One of the prime areas of …

Degradation In The Brockman River And Ellen Brook Catchments, Western Australia, Brian Lloyd

Natural resources published reports

An eight day survey of degradation in the Ellen Brook and Brockman River catchments revealed several areas of concern. Key concerns are:

Erosion and sedimentation

Various forms of erosion were observed during the survey that would cumulatively have an effect on the quality of both the Ellen Brook and the Brockman Rivers, and ultimately the Swan River. Erosion resulted from many situations including landholder management, subdivision design and infrastructure maintenance. Raising awareness as to consequences of erosion and sedimentation, along with remedial techniques and best management practices is recommended for the various levels of stakeholders.

Eutrophication

Eutrophication has been established …

An Overview Of Recreation And Parks Professional Preparation Programs In Higher Education, Jennifer Y. Mak

Management Faculty Research

The purpose of this paper is to give an overview of recreation and parks professional preparation programs in higher education. This paper will (a) help to understand the framework of recreation and parks professional preparation programs, (b) discuss the factors which influence the professional preparation outcomes, and (c) help to identify future research needs. The discussion is based on the framework for studying professional preparation programs by Stack, et al. (1986). The key element of the framework for studying recreation and parks professional preparation programs is the recreation and parks professional preparation environment which was the product of external, internal …

Growth In Colorado And The West: Trends And Issues [Outline], James N. Corbridge Jr.

Water and Growth in the West (Summer Conference, June 7-9)

4 pages.

Contains references.

Issues Associated With New Developments And Transfers: A West Slope Perspective, Eric Kuhn

Water and Growth in the West (Summer Conference, June 7-9)

8 pages.

Impacts Of Water Transfers On The Agricultural Sector, Don Ament

Water and Growth in the West (Summer Conference, June 7-9)

2 pages.

Contains one reference.

Activities Of The Eagle River Assembly, Douglas Kemper

Water and Growth in the West (Summer Conference, June 7-9)

14 pages (includes illustrations).

Chronic And Emerging Water Issues In The South Platte/Front Range Corridor, James S. Lochhead

Water and Growth in the West (Summer Conference, June 7-9)

16 pages.

Gunnison River: A Local Perspective On Union Park, John R. Hill, Jr.

Water and Growth in the West (Summer Conference, June 7-9)

11 pages.

Conjunctive Use In The Denver Basin: The Three Way Agreement, Peter D. Binney

Water and Growth in the West (Summer Conference, June 7-9)

14 pages.

Contains references.

Potential For Coordinated Facilities Management Along The Northern Front Range, Marc Waage

Water and Growth in the West (Summer Conference, June 7-9)

2 pages.

Emerging Demands In The Colorado Headwaters, Taylor Hawes

Water and Growth in the West (Summer Conference, June 7-9)

8 pages.

Environmental Impacts Of New Solutions: Two Case Studies, Lori Potter, Michael Freeman

Water and Growth in the West (Summer Conference, June 7-9)

32 pages.

Contains footnotes and references.

Groundwater And Growth Management In The New West: Evolving Law And Practice, A. Dan Tarlock

Water and Growth in the West (Summer Conference, June 7-9)

13 pages.

Municipal Demands As The Stimulus For Innovation: Tales From The Lower Colorado River Basin, Jerome C. Muys

Water and Growth in the West (Summer Conference, June 7-9)

17 pages.

The Water Development-Growth Relationship: Case Studies, Edward F. Harvey

Water and Growth in the West (Summer Conference, June 7-9)

7 pages.

Doing More With Less: Remaining Opportunities For “Tuning The System”: The Potential For Central Valley System-Wide Conjunctive Water Management, Gregory A. Thomas

Water and Growth in the West (Summer Conference, June 7-9)

30 pages (includes illustrations).

Contains footnotes.