Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (8179)
- University of Kentucky (5110)
- Utah State University (1544)
- Department of Primary Industries and Regional Development, Western Australia (1169)
- Old Dominion University (935)
-
- University of South Florida (832)
- University of Arkansas, Fayetteville (671)
- Nova Southeastern University (633)
- Portland State University (606)
- Louisiana State University (593)
- University of Nevada, Las Vegas (583)
- Singapore Management University (566)
- University of Colorado Law School (525)
- University of Northern Iowa (500)
- Western Kentucky University (445)
- TÜBİTAK (441)
- SIT Graduate Institute/SIT Study Abroad (424)
- University of Texas Rio Grande Valley (406)
- South Dakota State University (402)
- Missouri University of Science and Technology (378)
- Claremont Colleges (355)
- City University of New York (CUNY) (349)
- Brigham Young University (342)
- California Polytechnic State University, San Luis Obispo (326)
- Clemson University (312)
- Technological University Dublin (302)
- Chulalongkorn University (301)
- Wright State University (301)
- University of Texas at El Paso (282)
- Edith Cowan University (280)
- Keyword
-
- Western Australia (722)
- Climate change (521)
- Sustainability (384)
- Conservation (356)
- Grazing (334)
-
- Water quality (325)
- United States (268)
- Machine learning (260)
- Biodiversity (241)
- Management (236)
- Ecology (232)
- Invasive species (231)
- Agriculture (228)
- Environment (227)
- California (204)
- Sheep (189)
- Chemistry (185)
- Education (179)
- Natural resources (179)
- Animals (176)
- Water (176)
- Cattle (175)
- Artificial intelligence (174)
- Nitrogen (172)
- Fisheries (165)
- Soil (161)
- Drought (160)
- Utah (159)
- Livestock (158)
- Nebraska (156)
- Publication Year
- Publication
-
- IGC Proceedings (1977-2023) (4103)
- United States Department of Agriculture Wildlife Services: Staff Publications (1474)
- Theses and Dissertations (1135)
- Electronic Theses and Dissertations (782)
- School of Natural Resources: Faculty Publications (607)
-
- Research Collection School Of Computing and Information Systems (501)
- USF Tampa Graduate Theses and Dissertations (425)
- Independent Study Project (ISP) Collection (403)
- Great Plains Wildlife Damage Control Workshop Proceedings (365)
- United States Geological Survey: Staff Publications (355)
- Faculty Publications (339)
- Theses (337)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (306)
- Graduate Theses and Dissertations (296)
- Masters Theses (295)
- LSU Master's Theses (283)
- Dissertations (260)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (259)
- Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298 (258)
- United States Department of Commerce: Staff Publications (254)
- The Prairie Naturalist (253)
- The Probe: Newsletter of the National Animal Damage Control Association (242)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (238)
- Journal of the Iowa Academy of Science: JIAS (238)
- International Journal of Speleology (235)
- Honors Theses (234)
- LSU Doctoral Dissertations (234)
- Turkish Journal of Chemistry (228)
- Open Access Theses & Dissertations (227)
- Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications (224)
- Publication Type
- File Type
Articles 40711 - 40740 of 42642
Full-Text Articles in Entire DC Network
A Contribution To The Study Of The Genus Porrhomma (Araneae: Linyphiidae). Notes On A Population Of P. Egeria (Simon) And Other Cavernicolous Species, J. D. Bourne
International Journal of Speleology
A morphological and biometrical study of a population of Porrhomma egeria (Simon) has allowed to determine that P. moravicum (Miller and Kratochvil) and P. obambulatum (Kritscher) belong to the same species and should thus be considered synonymous. The importance of biometric studies for the study of this Genus is emphasised.
Carotenoids In Niphargus Casimiriensis Skalski (Amphipoda) From Artesian Wells, B. Czeczuga, A. Skalski
Carotenoids In Niphargus Casimiriensis Skalski (Amphipoda) From Artesian Wells, B. Czeczuga, A. Skalski
International Journal of Speleology
By means of columnar and thin-layer chromatography, the presence of carotenoids in Niphargus casimiriensis Skalski from an artesian well was studied. There are qualitative and quantitative differences in the carotenoid contents of the Niphargus casimiriensis Skalski specimens.
Humidity Responses And The Role Of Hamann's Organ Of Cavernicolous Bathysciinae (Coleoptera Catopidae), Marco Lucarelli, Valerio Sbordoni
Humidity Responses And The Role Of Hamann's Organ Of Cavernicolous Bathysciinae (Coleoptera Catopidae), Marco Lucarelli, Valerio Sbordoni
International Journal of Speleology
The humidity responses of Bathysciola derosasi and Leptodirus hohenwarti, two species of troglobitic Bathysciinae showing different degrees of adaptation to cave environment, have been studied. Intact and antennectomised subjects were tested using choice-chambers with various combinations of relative humidity alternatives (i.e. 20-100%, 50-100%, 90-100%, 50-90% and, as controls, 100-100%) to investigate the role played by the sense organs situated on the 7th, 9th and 10th antenna segments. The results show that intact-antenna subjects of both species are very sensitive to humidity gradients and that their intensity of reaction varies according to the intensity of stimulus, as previously reported by …
Observations Sur I'Écologie Et La Distribution Des Turbellariés Tricladides Dépigmentés Et Anophtalmes De Roumanie, L. Botosaneanu
Observations Sur I'Écologie Et La Distribution Des Turbellariés Tricladides Dépigmentés Et Anophtalmes De Roumanie, L. Botosaneanu
International Journal of Speleology
Twenty-two localities, where unpigmented and mostly blind tricladid turbellarians (Dendrocoelidae and Fonticola) were discovered by the author, are described in more or less detail. These animals are particularly well represented in Romania; the explanation is that they are expansive offshoots of a fauna formerly inhabiting the huge brackish or freshwater lakes which covered most of this country during the Neogene (and especially the Sarmatian). Different species are inhabitants of different particular habitats of the underground water realm, and the author distinguishes between species inhabiting cave waters, typical phreatobionts, hyporheic species and species living in springs or springbrooks. These species are …
The Tegumental Glands Of A Troglobitic Crustacean, L. Juberthie-Jupeau, Y. Crouau
The Tegumental Glands Of A Troglobitic Crustacean, L. Juberthie-Jupeau, Y. Crouau
International Journal of Speleology
Tegumental glands, located in the antennae of Antromysis juberthiei are present in males and females; in the antennulae each of them consists of 3 cells: a secretory cell of large size, an intermediary cell and a canal cell probably secretory in nature. The canal cell possesses an extracellular cavity with deep infoldings and microvilli between which the canal crinkles along. The intermediary cell is heavily provided with microfilaments. The secretory granules have an organized content.
Diplopoda From Papuan Caves (Zoological Results Of The British Speleological Expedition To Papua-New Guinea, 1975, 4), Richard L. Hoffman
Diplopoda From Papuan Caves (Zoological Results Of The British Speleological Expedition To Papua-New Guinea, 1975, 4), Richard L. Hoffman
International Journal of Speleology
Eight species of polydesmoid millipeds are described from the caves of the extreme northwestern corner of Papua New Guinea. Four new genera are named: in Paradoxosomatidae, Selminosoma, type S. chapmani; Astromontosoma, type A. jeekeli; in Doratodesmidae, Scolopopyge, type S. pholeter; Selminarchus, type S. hispidus. Two additional new species are referred to established genera Eustrongylosoma exiguum and Nothrosoma beroni, the latter, however, (known only from females) is probably referable to a new genus. Selminosoma chapmani appears both from its structure and biology to be a true troglobite, the first such species known in the Paradoxosomatidae. The two doratodesmid species extend the …
Ecological Investigations Of The Influence Of A Polluted River On Surrounding Interstitial Underground Waters, Milan Meštrov, Romana Lattinger-Penko
Ecological Investigations Of The Influence Of A Polluted River On Surrounding Interstitial Underground Waters, Milan Meštrov, Romana Lattinger-Penko
International Journal of Speleology
Because of the fundamental biological investigations and also of the practical importance, the authors investigated interstitial subterranean water (hyporheic) near a polluted river Sava in the plain where the underground waters are considered as potable. With the comparison of the physical, chemical, bacteriological, saprobiological and faunistic characteristics of the river and its hyporheic zone in different seasons their mutual relation is detected. The results show the influence of polluted river water on the hyporheic water within the river bed to at least 2 m depth.
Réponses Locomotrices Du Poisson Cavernicole Astyanax Jordani (Pisces, Characidae) À Des Signaux Périodiques Et Apériodiques De Lumière Et De Température, G. Thines, M. Weyers
Réponses Locomotrices Du Poisson Cavernicole Astyanax Jordani (Pisces, Characidae) À Des Signaux Périodiques Et Apériodiques De Lumière Et De Température, G. Thines, M. Weyers
International Journal of Speleology
The locomotory activity of adult cave fishes Astyanax jordani was recorded in isolation in the following light and temperature conditions: constant conditions (100 Lx - 20°C), in a light cycle (LD:11/11 -10 Lx -100 Lx) and in a temperature cycle (11/11; 17/20, 19/22, 20/23, 27/30 °C). All longitudinal time series extended for a minimum of 30 days. Results show: (1) That no circadian regulation appears in constant conditions; (2) that passive entrainment occurs in LD (Amplitude: 90 Lx) and in periodic temperature conditions (Amplitude: 3°C). The entrainment effect damps out and varies individually; (3) that the mean activity increases with …
Un Batrachuperus Adulte Dans Une Grotte D'Iran Espèce Nouvelle?, M. Clergue-Gazeau, J. P. Farcy
Un Batrachuperus Adulte Dans Une Grotte D'Iran Espèce Nouvelle?, M. Clergue-Gazeau, J. P. Farcy
International Journal of Speleology
During a speleological exploration of a cave in Iran, a species of Urodele Hynobiidae was found. This Batrachian is either a new species of the genus Batrachuperus or an adult form of the species Batrachuperus persieus previously only described in its larval and juvenile forms. Certain observable differences suggest that it can be considered a new species. Observations on its feeding habits indicate that the presence of this periodic trogloxene in the cave is not “accidental”, but that it remains there for a long period during its life cycle.
The Discovery Of Proteus-Eggs (Proteus Anguinus Laurenti, Amphibia) In Seminatural Conditions, B. Sket, F. Velkovrh
The Discovery Of Proteus-Eggs (Proteus Anguinus Laurenti, Amphibia) In Seminatural Conditions, B. Sket, F. Velkovrh
International Journal of Speleology
Proteus-eggs were found for the first time in the nature, drifted out of a karstic spring. They were obtained from the Vir Spring al Sticna, 30 km ESE of Ljubljana. The hydrological and faunistical data indicate that Proteus lays its eggs also in “unsheltered”, energetically rich groundwater habitats.
Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore
Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore
Arkansas Water Resources Center Technical Reports
No abstract provided.
Organizing And Motivating Public Groups To Support Rational And Positive Wildlife Management Efforts, Major L. Boddicker
Organizing And Motivating Public Groups To Support Rational And Positive Wildlife Management Efforts, Major L. Boddicker
Great Plains Wildlife Damage Control Workshop Proceedings
One of the privileges of working in wildlife management is working with positive people who still support the American dream of hope and opportunity. They call a spade a spade and fight adversity with enthusiasm. They genuinely express themselves.
Predation On Furbearers And Management Alternatives, Ronald D. Andrews
Predation On Furbearers And Management Alternatives, Ronald D. Andrews
Great Plains Wildlife Damage Control Workshop Proceedings
Most of the presentations from other members of the panel have discussed direct predation of one animal upon another with evidence and data to support it. Their presentations indicate that in some instances, considerable data has been collected that substantiates the fact that predation has been and can be a limiting factor in sustaining certain local animal populations. Suggestions have also been made concerning management alternatives that might help to reduce this predatory impact when desirable. Predation on furbearers and its impact is considerably more ambiguous and abstract. Facts and data concerning significant predation on furbearers, except for mink on …
Long-Term Education Program In Predator Damage And Damage Control, Major L. Boddicker
Long-Term Education Program In Predator Damage And Damage Control, Major L. Boddicker
Great Plains Wildlife Damage Control Workshop Proceedings
The models for long-term education programs in predator damage and damage control are the Missouri and Kansas systems. We owe a great deal of gratitude to the founders and successors of these programs. most of the other efforts going today in the Extension animal damage control programs are modifications of those efforts.
The Use Of Aversive Agents For Predator Control, M.P. Botkin
The Use Of Aversive Agents For Predator Control, M.P. Botkin
Great Plains Wildlife Damage Control Workshop Proceedings
The studies have continued in the search for potentially aversive compounds and mixtures. To date, undecenovanillylamide is the most effective substance found and is most effective in a mixture with p-dichlorobenzene. Three materials which have been tested actually appear to stimulate attack by coyotes on the treated animal. These are: Skatol (a fecal compound), Naphthalene and Thiomalic acid ( a foul sulpher-like odor).
Skunk Rabies Control And Surveillance In Central And Eastern Montana, Gary Nesse, Kenneth Seyler
Skunk Rabies Control And Surveillance In Central And Eastern Montana, Gary Nesse, Kenneth Seyler
Great Plains Wildlife Damage Control Workshop Proceedings
A skunk rabies control and surveillance program was initiated by the Department of Livestock, Vertebrate Pest Control Bureau, within designated areas of Fergus, Fallon and Richland counties between January 1, 1975 and July 30, 1975. The use of strychnine eggs employed by trained, licensed government pesticide applicators plus cooperation of local citizens proved to be a safe and selective method for conducting such a program. Of the 83 skunks diagnosed rabid by the Fluroescent Antibody Test as the Department of Livestock Diagnostic Laboratory in Bozeman, 72 percent were taken from control areas; however, of 284 skunks examined from control areas, …
The Effects Of Coyote Control Operations On Non-Target Species In New Mexico, Gary Lee Nunley
The Effects Of Coyote Control Operations On Non-Target Species In New Mexico, Gary Lee Nunley
Great Plains Wildlife Damage Control Workshop Proceedings
In February of 1972 the use of compound 1080, sodium cyanide, and strychnine in Federal coyote control programs and on Federal lands was halted as directed by Executive Order 11643. Shortly thereafter, the Environmental Protection Agency cancelled the registration of these same toxicants as used in predator control. These actions were taken at the recommendation of the Advisory Committee on Predator Control in their report to the Council of Environmental Quality and to the Department of the Interior.
An Extension Trapper Program, Jerry Riedel
An Extension Trapper Program, Jerry Riedel
Great Plains Wildlife Damage Control Workshop Proceedings
South Dakota's Extension Trapping Program originated in July 1971 when the Department of Game, Fish and Parks initiated this type of animal damage control program for the eastern one-half of South Dakota. The funding for this program is derived by assessing a surtax on all farmers and ranchers at a rate of 1 cent per head on all cattle and 4 cent per head on all sheep. The monies gained here is then annually matched by the Game, Fish and Parks through hunting, fishing and trapping license by the Game, Fish and Parks. However, for the last two years a …
A Mammalogist's View Of Current Mammal Damage Control Trends, Sydney Anderson
A Mammalogist's View Of Current Mammal Damage Control Trends, Sydney Anderson
Great Plains Wildlife Damage Control Workshop Proceedings
Different mammalogists have different views on this subject. The following are mine. Historically, there was considerable controversy in the American Society of Mammalogists around 1930 on the question of predator control. The primary reasons for these different views, then and also now, are different value judgements. Science without non-scientific value judgements is not sufficient to lead one to a single view or set of views. Science embodies certain value judgments such as honesty, the public value of human knowledge, objectivity, the desirability of formulating testable hypotheses, and the examination of all relevant and available evidence. Scientists are human beings and …
Leaf Litter Processing In Aquatic Systems Two Variable Model, Boyd Jay Hanson
Leaf Litter Processing In Aquatic Systems Two Variable Model, Boyd Jay Hanson
Theses and Dissertations
The adequacy of the negative exponential model with one independent variable, days or accumulated time, as a descriptive equation for aquatic leaf litter processing was examined. The effect of adding a second independent variable, degree days or accumulated temperature, to the model was also examined. The two variable negative exponential model was shown to have at least two advantages over the single variable model. The two variable model adequately fits litter processing data for more cases than the single variable model. The expanded model also allows determination of rate coefficients for various temperature levels of the experiment rather than assuming …
Prairie Dog Management: Educational Assistance To Local Governmental Units, Edward K. Boggess
Prairie Dog Management: Educational Assistance To Local Governmental Units, Edward K. Boggess
Great Plains Wildlife Damage Control Workshop Proceedings
There is a long history of involvement between Kansas State University (formerly Kansas State Agricultural College) and township governmental units regarding control of prairie dogs. In 1901 and 1903, the Kansas legislature passed laws authorizing townships to conduct prairie dog control programs and providing funds for the College to conduct experiments on methods of controlling prairie dogs and gophers. The acts also directed the College to procure and furnish to the townships the proper prepared materials for prairie dog control. The Experiment Station began supplying strychnine baits in January of 1902 and continued this practice until 1970.
Predation On Big Game And Its Management, Samuel L. Beasom
Predation On Big Game And Its Management, Samuel L. Beasom
Great Plains Wildlife Damage Control Workshop Proceedings
This paper summarizes information from the literature and personal observation to present an overview of the effects of predators on big game populations. Specifically it examines control of prey populations, culling of inferior prey, and stimulation of prey productivity. Food habit investigations were omitted because of the impossibility of evaluating the impact of predation by this approach because of a lack of population data.
Volume 1, Number 4 (November 1977), The Otec Liaison
Volume 1, Number 4 (November 1977), The Otec Liaison
The OTEC Liaison
No abstract provided.
4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla
4th Annual Umr-Dnr Conference On Energy -- Entire Proceedings, University Of Missouri--Rolla
UMR-MEC Conference on Energy / UMR-DNR Conference on Energy
No abstract provided.
Volume 1, Number 3 (October 1977), The Otec Liaison
Volume 1, Number 3 (October 1977), The Otec Liaison
The OTEC Liaison
No abstract provided.
Fisheries Report No 30 - The Wildlife Of The Proposed Karroun Hill Nature Reserve, Western Australia, W. K. Youngson, N. L. Mckenzie
Fisheries Report No 30 - The Wildlife Of The Proposed Karroun Hill Nature Reserve, Western Australia, W. K. Youngson, N. L. Mckenzie
Fisheries Research Reports
Plants and vertebrate animals were recorded from a proposed 300 000 ha nature reserve centred on Karroun Hill in the goldfields of Western Australia (30°03'S; 118°02'E).
Plant communities are described in terms of their structurally important species and related to local physiography.
Fifteen native mammal species, sixty-four bird species, twenty-four reptile species and one amphibian were recorded. Annotated lists are presented. The wildlife reflects the transitional nature of the Coolgardie Botanical District. Both Eremean and South Western Province species were recorded.
An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office
An Annotated Bibliography Of Ocs Documents In Maine, Maine State Planning Office
Maine Collection
An Annotated Bibliography of OCS Documents in Maine
Outer Continental Shelf Memorandum 1
Compiled by Edward H. Shenton & Charles S. Colgan
Maine Coastal Program, Maine State Planning Office, Augusta, Maine, 1977.
Contents: 1. Introduction / 2. OCS - General / 3. OCS - Federal Regulations / 4. Economic Aspects / 5. Environmental Studies / 6. Oil Spills - Effects and Studies / 7. Onshore Effects / 8. The North Sea Experience / 9. Legal Aspects / 10. Petroleum Drilling Technology
Assessment Of The Water Quality In The Salt River Prior To Its Impoundment In Anderson And Spencer Counties, Kentucky, Andrew C. Miller, Louis A. Krumholz, Stuart E. Neff, Darly E. Jennings, Patricia B. Olmes, David S. White
Assessment Of The Water Quality In The Salt River Prior To Its Impoundment In Anderson And Spencer Counties, Kentucky, Andrew C. Miller, Louis A. Krumholz, Stuart E. Neff, Darly E. Jennings, Patricia B. Olmes, David S. White
KWRRI Research Reports
Monthly water samples were taken and analyzed to determine the water quality of the Salt River in Anderson and Spencer counties Kentucky prior to the river's impoundment. Sediments from the area watershed were analyzed to total acid digestion, barium chloride extraction, and aqueous extraction methods. Rainwater and runoff water were collected and analyzed for major cations and anions from two sites in the watershed.
The Salt River at Taylorsville is characterized by hard water with high levels of calcium (33.5-74.8 mg/1), bicarbonate (136-236 mg/l), specific conductance (200-535 μmhos/cm), and sulfate (16.5-71.5 mg/l). Nitrates (0.6-5.7 mg/l), phosphates (0.2-2.4 mg/l), sodium (3.2-20.3 …
The Effect Of Warmed Humidified Oxygen On The Temperature Of Depressed Newborns, Earlene Scharping
The Effect Of Warmed Humidified Oxygen On The Temperature Of Depressed Newborns, Earlene Scharping
Loma Linda University Electronic Theses, Dissertations & Projects
The purpose of this study was to evaluate the effect of warmed humidified oxygen on the body temperature of depressed newborns and compare it to the effect of unwarned un-humidified oxygen administered under similar circumstances. The sample group consisted of a total of ten infants (five control and five experimental) with birth weights > 2000 gms who had an Apgar score of less than seven at birth and who required the administration of oxygen. The control group received oxygen in the routine delivery room manner (unwarned and un-humidified). The experimental group received oxygen which had been warmed to a temperature of …
Description Of The Larval Development Of Squilla Empusa Say (Crustacea Stomatopoda) With Aspects Of Larval Ecology In Chesapeake Bay, Steven Gaines Morgan
Description Of The Larval Development Of Squilla Empusa Say (Crustacea Stomatopoda) With Aspects Of Larval Ecology In Chesapeake Bay, Steven Gaines Morgan
OES Theses and Dissertations
Larvae of Sguilla empusa were collected from the plankton and were reared in the laboratory to describe the pelagic larval development and the postlarval stage. Nine pelagic stages are passed through before the postlarval stage is attained.
The larvae reared for descriptive purposes were subjected to sixteen combinations of temperature and salinity to determine their tolerance to the two parameters. Larvae survived longer and molted more frequently when reared at 25°/oo and 20°C or 25°C, which corresponds to the natural conditions of the Chesapeake Bay when the larvae were collected.
A three year planktonic survey conducted in the lower region …