Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (7329)
- Utah State University (1133)
- Department of Primary Industries and Regional Development, Western Australia (968)
- University of Colorado Law School (525)
- University of Nevada, Las Vegas (429)
-
- SIT Graduate Institute/SIT Study Abroad (393)
- University of Arkansas, Fayetteville (384)
- Portland State University (360)
- University of Kentucky (288)
- South Dakota State University (263)
- Louisiana State University (228)
- University of Texas Rio Grande Valley (212)
- University of South Florida (204)
- Old Dominion University (201)
- Clemson University (162)
- Edith Cowan University (147)
- Chulalongkorn University (134)
- United Arab Emirates University (123)
- Loyola Marymount University and Loyola Law School (119)
- Western Kentucky University (114)
- University of Texas at El Paso (113)
- City University of New York (CUNY) (108)
- Montclair State University (107)
- Claremont Colleges (104)
- International Centre of Insect Physiology and Ecology (96)
- World Maritime University (93)
- Cal Poly Humboldt (88)
- University of Rhode Island (87)
- Fordham University (86)
- California State University, San Bernardino (85)
- Keyword
-
- Western Australia (594)
- Climate change (332)
- Conservation (297)
- Sustainability (289)
- Water quality (277)
-
- United States (250)
- Invasive species (216)
- Agriculture (187)
- California (177)
- Management (168)
- Ecology (165)
- Environment (163)
- Natural resources (146)
- Biodiversity (142)
- Colorado (133)
- Fisheries (133)
- Water (133)
- Nebraska (131)
- Drought (124)
- Utah (124)
- Groundwater (119)
- Wildlife (114)
- Environmental (108)
- Coyote (101)
- Pollution (101)
- Land use (99)
- Habitat (95)
- Survival (93)
- Mongolia (92)
- White-tailed deer (91)
- Publication Year
- Publication
-
- United States Department of Agriculture Wildlife Services: Staff Publications (1474)
- School of Natural Resources: Faculty Publications (606)
- Independent Study Project (ISP) Collection (377)
- Great Plains Wildlife Damage Control Workshop Proceedings (365)
- Electronic Theses and Dissertations (309)
-
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (258)
- The Prairie Naturalist (253)
- United States Department of Commerce: Staff Publications (252)
- United States Geological Survey: Staff Publications (246)
- The Probe: Newsletter of the National Animal Damage Control Association (242)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (224)
- Theses and Dissertations (208)
- Theses (185)
- Fisheries Research Reports (179)
- School of Natural Resources: Dissertations, Theses, and Student Research (166)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (166)
- LSU Master's Theses (159)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (157)
- USF Tampa Graduate Theses and Dissertations (148)
- Graduate Theses and Dissertations (146)
- Water Current Newsletter (141)
- All U.S. Government Documents (Utah Regional Depository) (139)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (139)
- Wildlife Damage Management Conference (138)
- Fisheries Management Papers (135)
- Reports (134)
- Human–Wildlife Interactions (130)
- Bird Control Seminars Proceedings (129)
- Journal of the Department of Agriculture, Western Australia, Series 4 (128)
- Department of Environmental Studies: Undergraduate Student Theses (127)
- Publication Type
- File Type
Articles 15781 - 15810 of 18629
Full-Text Articles in Entire DC Network
Using Water Naturally, Holmes Rolston, Iii, University Of Colorado Boulder. Natural Resources Law Center
Using Water Naturally, Holmes Rolston, Iii, University Of Colorado Boulder. Natural Resources Law Center
Books, Reports, and Studies
[ii], 26 p. ; 28 cm
The Prohibition Against Taking Endangered Wildlife In Section 9 Of The Endangered Species Act Of 1973: The Existence Of Exceptions Supports Full Enforcement, Federico Cheever, University Of Colorado Boulder. Natural Resources Law Center
The Prohibition Against Taking Endangered Wildlife In Section 9 Of The Endangered Species Act Of 1973: The Existence Of Exceptions Supports Full Enforcement, Federico Cheever, University Of Colorado Boulder. Natural Resources Law Center
Books, Reports, and Studies
8 p. ; 28 cm
Water, The Community, And Markets In The West, Helen Ingram, Cy R. Oggins, University Of Colorado Boulder. Natural Resources Law Center
Water, The Community, And Markets In The West, Helen Ingram, Cy R. Oggins, University Of Colorado Boulder. Natural Resources Law Center
Books, Reports, and Studies
12 p. ; 28 cm
The Effect Of Industrial Development On The Sediment Contamination Of Apponaug Cove, A Historical Analysis, Marina Havan-Orumieh
The Effect Of Industrial Development On The Sediment Contamination Of Apponaug Cove, A Historical Analysis, Marina Havan-Orumieh
Marine Affairs Theses and Major Papers
Sediment cores have long been used to formulate the chronology of environmental contamination. This paper will investigate the utility of sediment cores in determining the chronology of trace metal contamination in Apponaug Cove, Rhode Island. A meter-long sediment core taken from the Cove was analyzed for chromium, copper, lead, zinc and nickel as well as organic pollutants coprostanol, polyaromatic hydrocarbons, benzotriazole and clorobenzotriazole. The core represents a close to 200 year record of sediments in Apponaug Cove. The cultural/economic changes in the Watershed in addition to environmental laws composed in the State and Federal levels which may have correlated with …
Can Kangaroos Survive In The Wheatbelt?, Graham Arnold
Can Kangaroos Survive In The Wheatbelt?, Graham Arnold
Journal of the Department of Agriculture, Western Australia, Series 4
One of the costs of agricultural development in Western Australia over the past 100 years has been the loss of most of the native vegetation and, consequently, massive reductions in the numbers of most of our native fauna. Thirteen mammal species are extinct and many bird and mammal species are extinct in some areas. These losses will increase as remnant native vegetation degrades under the impact of nutrients washed and blown from farmland, from the invasion by weeds and from grazing sheep.
Even kangaroos are affected. Unless the community manages remnant vegetation to minimise degradation and enhance the regeneration of …
The Probe, Issue 99 - January/February 1990
The Probe, Issue 99 - January/February 1990
The Probe: Newsletter of the National Animal Damage Control Association
THE PROBE National Animal Damage Control Association
JANUARY/FEBRUARY 1990
NADCA Election Results
APHIS Activity Report
Predator Meeting Conference
Treasurer’s Report
Letters to Ye Ed
Personnel
ADC Research
New Products
Animal Rights
Fisheries Research Report No 99 - An Investigation Of Weight Loss Of Marron (Cherax Tenuimanus) In Air During Live Transport To Market, Noel Morrissy, Peter Walker, Cliff Fellows, Warren Moore
Fisheries Research Report No 99 - An Investigation Of Weight Loss Of Marron (Cherax Tenuimanus) In Air During Live Transport To Market, Noel Morrissy, Peter Walker, Cliff Fellows, Warren Moore
Fisheries Research Reports
It is generally acknowledged that more competitive marketing of Australian fisheries and aquaculture harvests requires closer attention to post-harvest technology. Historically, these products have been marketed in a variety of forms (e.g., for freshwater crayfish:- boiled fresh, boiled frozen, whole or tails, and live). Some of these forms present a product of actual, or perceived, poorer quality to the retailer and consumer and, thereby, obtain low prices.
Freshwater crayfish can survive out of water for extended periods and, so, can be economically transported alive to the (overseas) restaurant chef. This live product commands the very highest price for the grower. …
Hawaii's Rainforest Crunch: Land, People, And Geothermal Development, Paul Faulstich
Hawaii's Rainforest Crunch: Land, People, And Geothermal Development, Paul Faulstich
Pitzer Faculty Publications and Research
One hundred and forty-one people, led by Native Hawaiians, were arrested on 25 March 1990 as part of the largest demonstration yet against geothermal development in Hawaii. The gathering was intended to focus attention on Native Hawaiian rights and the ecological consequences of drilling geothermal wells in the near-pristine Wao Kele O Puna rain forest. The energy project, undertaken by True Geothermal Company and endorsed by Hawaii's governor and other imposing figures, has already invaded the largest intact tropical lowland rain forest in the United States.
Cody Record Of Decision And Approved Resource Management Plan, United States Department Of The Interior, Bureau Of Land Management
Cody Record Of Decision And Approved Resource Management Plan, United States Department Of The Interior, Bureau Of Land Management
Record of Decisions (WY)
This document records the decision made by the Bureau of Land Management (BLM) for managing approximately 891,600 acres of public land surface and 1,508,200 acres of federal mineral estate administered by the Bureau of Land Management in the Cody Resource Area.
Anasazi Basketmaker: Papers From The 1990 Wetherill-Grand Gulch Symposium, Victoria M. Atkins, Lisa Mcclanahan
Anasazi Basketmaker: Papers From The 1990 Wetherill-Grand Gulch Symposium, Victoria M. Atkins, Lisa Mcclanahan
Elusive Documents
No abstract provided.
Fisheries Research Report No. 87 - The Recreational Marron Fishery In Western Australia, Summarised Research Statistics, 1971-1987, N. M. Morrissy, C. J. Fellows
Fisheries Research Report No. 87 - The Recreational Marron Fishery In Western Australia, Summarised Research Statistics, 1971-1987, N. M. Morrissy, C. J. Fellows
Fisheries Research Reports
The freshwater crayfish Cherax tenuimanus, called marron, provides an important recreational fishery in the south-west of Western Australia. The annual fishing catch and fishing effort have been monitored by a log book research programme and an end-of season telephone survey since the 1971/72 season.
Following the 1986/87 fishing season, the fishery remained closed for two seasons (1987/88 and 1988/89) to permit stocks to recover from the effects of high total fishing effort and unfavourable water conditions over the preceding seasons
This paper provides a detailed account of the catch and effort statistics to the close of the 1986/87 fishing season, …
Fisheries Research Report No. 84 - The Marine Open Shelf Environment: Review Of Human Influences, D. A. Hancock
Fisheries Research Report No. 84 - The Marine Open Shelf Environment: Review Of Human Influences, D. A. Hancock
Fisheries Research Reports
For the purpose of this review, the marine environment has been classified into three physical zones - the littoral zone, the open-shelf environment and the coral reef. Since the boundaries are arbitrary, there will inevitably be some overlap, but for this review the subject matter will be related to the area between low water of ordinary spring tides and the edge of the continental shelf; i.e., to a depth varying to 200 metres.
Human influences may have a dual role in affecting the marine environment, firstly in a causative manner and secondly in providing a remedy, in which case the …
Fisheries Research Report No. 92 - Spread Of The Introduced Yabbie Cherax Albidus Clark, 1936 In Western Australia, N. M. Morrissy, G. Cassells
Fisheries Research Report No. 92 - Spread Of The Introduced Yabbie Cherax Albidus Clark, 1936 In Western Australia, N. M. Morrissy, G. Cassells
Fisheries Research Reports
This report presents information on the probable original introduction of the eastern Australian yabbie to farm dams in the Wheat-belt Region of the southwest of Western Australia (in 1932 at Narembeen); the probable type of yabbie (the "White Yabby", Cherax albidus Clark 1936 ) and source (Miram Swamp in the Victorian Wimmera); and, in 1985, the first voicing of concern over the spread of yabbies to natural habitats, particularly in the higher rainfall region of the southwest, together with current national and international concerns and advice on introduced aquatic species.
Commercial harvesting ("extensive" aquaculture) of existing yabbie stocks in wheat-belt …
Fisheries Research Report No. 83 - The Western Rock Lobster Fishery 1985/86, R. S. Brown, E H. Barker
Fisheries Research Report No. 83 - The Western Rock Lobster Fishery 1985/86, R. S. Brown, E H. Barker
Fisheries Research Reports
The 1985/86 annual catch of the western rock lobster Panulirus cygnus, totalled 7,191,968kg (Australian Bureau of Statistics (ABS) ), a drop of 1,774,497kg (19.8 per cent) on the 1984/85 season. The value of the 1985/86 catch was approximately $94M based on ABS figures. This drop in catch was almost entirely the result of lower puerulus (first post larval stage, approximately 9 to 11 months old) settlement three to four years before (i.e. 1982/83 and 1981/82). The fall in catch was accompanied by a drop in fishing effort (total number of pot lifts) of 12.1 per cent on the previous season …
Great Divide Resource Area Record Of Decision And Approved Resource Management Plan, United States Department Of The Interior, Bureau Of Land Management
Great Divide Resource Area Record Of Decision And Approved Resource Management Plan, United States Department Of The Interior, Bureau Of Land Management
Record of Decisions (WY)
This document records the decision made by the Bureau of Land Management for managing approximately 4 million acres of public land surface and 5 million acres of federal mineral estate administered by the Bureau of Land Management (BLM) in the Great Divide Resource Area.
Pflanzengesellchaften Der Mongolei, Werner Hilbig
Pflanzengesellchaften Der Mongolei, Werner Hilbig
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
First paragraphs of the introduction:
In Fortführung der Forschungsreisen der russischen Floristen und Pflanzengeouraphen im vorigen und Anfang dieses Jahrhunderts wurden erste Expeditionen zur systematischen Erforschung der Naturressourcen der Mongolei in den 20er und 30er Jahren durchgeführt. Sie wurden von der Akademie der Wissenschaften der UdSSR und der Akademie der Wissenschaften der MVR (vorher Wissenschaftliches Komitee der MVR) organisiert. Auch die von der Geographischen GeselIschaft und der Akademie der Wissenschaften der UdSSR durchgeführten Expeditionen zur Erforschung der natürlichen Bedingungen und der Landwirtschaft in der Mongolei schufen Möglichkeiten zur Entwicklung der geobotanischen Forschungsrichtung (vgl. GUBANOV u. HILBIG 1989).
Als erste eigenständi"e …
Title Page, Verso Of The Title Page, And Contents For Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik, Band 8, Michael Stubbe
Title Page, Verso Of The Title Page, And Contents For Erforschung Biologischer Ressourcen Der Mongolischen Volksrepublik, Band 8, Michael Stubbe
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Title page, verso of the title page, and contents of Erforschung biologischer Ressourcen der Mongolischen Volksrepublik, Band 8 (1990).
13.2.12. Artificial Nest Structures For Canada Geese, I. J. Ball
13.2.12. Artificial Nest Structures For Canada Geese, I. J. Ball
Waterfowl Management Handbook
Under natural conditions, Canada geese are protected from predatory mammals by selecting nest sites on islands, muskrat lodges, cliffs, or snags, or nests made by ospreys or other motors. The limited availability of safe natural sites seems to hold many goose populations below limits set by other habitat factors. The use of artificial structures to provide safe nest sites for Canada geese in North America began more than 50 years ago; structures are now among the most widely used, and most successful, of goose management practices.
Structures are considered any artificial device, with the exception of earthen or rock islands, …
13.3.5. Ecology Of Northern Prairie Wetlands, Jan Eldridge
13.3.5. Ecology Of Northern Prairie Wetlands, Jan Eldridge
Waterfowl Management Handbook
Glaciated wetlands of the prairie pothole region are among the most productive of ecosystems. In terms of primary productivity (vegetation) they rank with the tropical rain forests (Fig. 1). Wetland productivity is controlled by water levels that fluctuate over time. However, primary productivity is highly variable for a variety of reasons including the variance in annual precipitation, the nature of the glacial till, the salinity of the water, the relation of the basin to the groundwater, and the temperature extremes typical of a continental climate.
My purpose is to review the basic patterns that contribute to the productivity of prairie …
13.3.3. Aquatic Invertebrates Important For Waterfowl Production, Jan Eldridge
13.3.3. Aquatic Invertebrates Important For Waterfowl Production, Jan Eldridge
Waterfowl Management Handbook
Aquatic invertebrates play a critical role in the diet of female ducks during the breeding season. Most waterfowl hens shift from a winter diet of seeds and plant material to a spring diet of mainly invertebrates. The purpose of this chapter is to give managers a quick reference to the important invertebrate groups that prairie-nesting ducks consume.
Waterfowl species depend differentially on the various groups of invertebrates present in prairie wetlands, but a few generalizations are possible. Snails, crustaceans, and insects are important invertebrate groups for reproducing ducks (Table). Most species of laying hens rely on calcium from snail shells …
13.3.3. Aquatic Invertebrates Important For Waterfowl Production, Jan Eldridge
13.3.3. Aquatic Invertebrates Important For Waterfowl Production, Jan Eldridge
Waterfowl Management Handbook
Aquatic invertebrates play a critical role in the diet of female ducks during the breeding season. Most waterfowl hens shift from a winter diet of seeds and plant material to a spring diet of mainly invertebrates. The purpose of this chapter is to give managers a quick reference to the important invertebrate groups that prairie-nesting ducks consume.
Waterfowl species depend differentially on the various groups of invertebrates present in prairie wetlands, but a few generalizations are possible. Snails, crustaceans, and insects are important invertebrate groups for reproducing ducks (Table). Most species of laying hens rely on calcium from snail shells …
13.4.2. Economic And Legal Incentives For Waterfowl Management On Private Lands, Richard D. Schultz
13.4.2. Economic And Legal Incentives For Waterfowl Management On Private Lands, Richard D. Schultz
Waterfowl Management Handbook
Waterfowl management on public lands in the United States began about 1870 with the establishment of Lake Merritt, a State-owned refuge near Oakland, California. In 1924 the United States established the Upper Mississippi River Wild Life and Fish Refuge, a complex of waterfowl habitats extending from Wabasha, Minnesota, to Rock Island, Illinois. Over the next 50 years, more than 80 million acres of county, State, and Federal lands were acquired across the United States to provide waterfowl production, migration, and wintering habitats. Because of these early (and continuing) efforts, a significant portion of North America’s remaining valuable wetland complexes exists …
13.4.4. Habitat Management For Molting Waterfowl, James K. Ringelman
13.4.4. Habitat Management For Molting Waterfowl, James K. Ringelman
Waterfowl Management Handbook
The ecology, behavior, and life history strategies of waterfowl are inseparably linked to that unique avian attribute, feathers. Waterfowl rely on flight capabilities to migrate, to fully exploit the resources of wetland and upland communities, and to escape life-threatening events. The insulation provided by contour and down feathers allows waterfowl to use a wide range of habitats and protects them from temperature extremes. Plumage is important not only for species recognition during courtship, but also for cryptic coloration of females during incubation. However, feathers become worn and must be periodically replaced. The process of feather renewal, or molt, is a …
13.1.2 Life History Traits And Management Of The Gadwall, James K. Ringelman
13.1.2 Life History Traits And Management Of The Gadwall, James K. Ringelman
Waterfowl Management Handbook
The gadwall is widely distributed throughout the western two-thirds of North America. Although its primary breeding habitat is in the drought-prone and degraded waterfowl habitats of the northern Great Plains, its continental population has remained relatively stable while those of most other dabbling ducks have declined. Some unique life history traits may in part be responsible for the resilience of gadwall populations. These unique attributes, which are important for gadwall management, are the subject of this leaflet. Readers interested in general references on gadwall biology and natural history are referred to Bellrose (1980) or Palmer (1976).
Effects Of Lake Management On Chemical, Physical, And Phycological Characteristics Of A Hypereutrophic Reservoir, Kaye J. Surratt
Effects Of Lake Management On Chemical, Physical, And Phycological Characteristics Of A Hypereutrophic Reservoir, Kaye J. Surratt
Masters Theses
Lake Charleston is a 1.1 billion gallon capacity side channel reservoir which was constructed in 1982 as a public drinking water supply for the City of Charleston in Coles County, Illinois. Past studies of the lake indicated an increase in eutrophication and the capacity to support large algal populations. Recent lake management practices include copper sulfate applications as an algicide and aeration to reduce flavor and odor.
In order to assess present lake status and to evaluate the effectiveness of lake management practices, two lake sites were sampled on a weekly basis from May to October, 1989. Chemical, physical, and …
A Recycling Proposal For The Vashon Island School District, John Turner Green
A Recycling Proposal For The Vashon Island School District, John Turner Green
All Graduate Projects
The purpose of this study was to identify a process by which the Vashon Island School District could reduce its waste stream and involve and educate students in an environmental ethic that actively seeks to reduce and recycle wastes. A search of the general and educational literature was made. An extensive research of state and local agencies helped to identify appropriate goals and actions for the Vashon School District. The proposal calls for seven specific actions to be taken.
Extinction Is Forever, Robert Loftin Ph.D, David Wallace
Extinction Is Forever, Robert Loftin Ph.D, David Wallace
Environmental Education Resources
Edited by Joan Bray and Teri Rosen. Research by La Tanya McNeal.
This booklet is an overview of the ice ages, extirpated Animals, extinct animals, endangered animals, and humans as an endangered species. In addition, it explores the impact that humans have on the environment and the problems with climate change.
Water Current, Volume 22, January 1990
Water Current, Volume 22, January 1990
Water Current Newsletter
Gold Accepts Position at Texas A&M University
Platte River Policy
Congresswoman Smith Receives Water Statesman of the Year Award
Risks Not Always Easy to Measure
One Word or Two?
First Northeast Nebraska Water Quality Day Attracts 250 Persons
Who Wil Get the Water?
Water Qualty Priority of Nebraska Water Conference Council
Water Quality Outlook for the 90s Topic for Conference
Forum Addresses State Water Issues
Preserving Minnesota's Natural Heritage, Nelson T. French
Preserving Minnesota's Natural Heritage, Nelson T. French
Journal of the Minnesota Academy of Science
Minnesota has a rich natural resource base that can be preserved only by maintaining and expanding private and public conservation programs that contribute toward the protection of forests, soils, waters, native plants, wildlife, natural communities, and endangered species. Although efforts to protect Minnesota's natural heritage have been a model for the Midwest, increasing pressure to plow up prairie, drain wetlands, consume old growth forest resources, and urbanize the landscape continue to erode an ever decreasing base of natural habitat. Significant alteration of our state's presettlement biological communities has occurred and, in spite of conservation laws and rules adopted over the …
Management Of The Ozark Big-Eared Bat, Plecotus Townsendii Ingens, In Arkansas, Michael J. Harvey, Sam W. Barkley
Management Of The Ozark Big-Eared Bat, Plecotus Townsendii Ingens, In Arkansas, Michael J. Harvey, Sam W. Barkley
Journal of the Arkansas Academy of Science
No abstract provided.