Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (8180)
- University of Kentucky (5110)
- Utah State University (1543)
- Department of Primary Industries and Regional Development, Western Australia (1171)
- Old Dominion University (935)
-
- University of South Florida (841)
- University of Arkansas, Fayetteville (671)
- Nova Southeastern University (634)
- 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)
- Chulalongkorn University (301)
- Technological University Dublin (301)
- Wright State University (301)
- University of Texas at El Paso (282)
- Edith Cowan University (280)
- Keyword
-
- Western Australia (722)
- Climate change (522)
- Sustainability (384)
- Conservation (356)
- Grazing (334)
-
- Water quality (327)
- United States (268)
- Machine learning (260)
- Biodiversity (242)
- Management (237)
- 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 (1136)
- Electronic Theses and Dissertations (782)
- School of Natural Resources: Faculty Publications (608)
-
- Research Collection School Of Computing and Information Systems (501)
- USF Tampa Graduate Theses and Dissertations (434)
- 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)
- Honors Theses (235)
- International Journal of Speleology (235)
- 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 38611 - 38640 of 42702
Full-Text Articles in Entire DC Network
Neue Literatur (Page 50), Martin-Luther-Universität
Neue Literatur (Page 50), Martin-Luther-Universität
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Neue literatur listed on page 50 of Erforschung biologischer Ressourcen der Mongolischen Volsrepublik, Band 6 (1985/1986).
Das Institut für Evolutive Morphologie und Ökologie der Tiere "A. N. Severcov" in Moskau gab 1986 folgenden Sammelband "Herpetologische Untersuchungen in der Mongolischen Volksrepublik" heraus.
Taxonomisch-Zoogeographischer Vergleich Westpaläarktischer (Mitteleuropäischer) Und Ostpaläarktischer (Mongolischer) Thysanopteren (Insecta), Gert Schliephake
Taxonomisch-Zoogeographischer Vergleich Westpaläarktischer (Mitteleuropäischer) Und Ostpaläarktischer (Mongolischer) Thysanopteren (Insecta), Gert Schliephake
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Bisher sind 55 Thysanopteren-Arten von der Mongolei bekannt. 27 Arten stimmen in der DDR und der MVR überein. Im Vergleich zu westeuropäischen Populationen bereiten die mongolischen Populationen von Thrips major und Franklilliella illtonsa Schwierigkeiten in der Festlegung, ob es sich um Rassen oder Clines handelt.
Hitherto 55 Thysanoptera-species are recorded from Mongolia. 27 species accord in DDR and in Mongolia. In comparision to mideuropean populations the mongolian populations of Thrips major and Frankliniella inlonsa present difficulties of the statement whether race ore cline.
До сих пор были отмечены всего 55 родов трипсов в Монголии, Из них 27 видов встречаются на …
Neue Literatur (Page 85), L. G. Bjazrov, Werner Hilbig
Neue Literatur (Page 85), L. G. Bjazrov, Werner Hilbig
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Bibliographical references listed on page 85 in Erforschung biologischer Ressourcen der Mongolischen Volsrepublik, Band 6 (1985/1986).
Hohes Lebensalter Von Salpingotus Crassicauda Und Erfolgreiche Fortpflanzung Von Cardioeranius Paradoxus (Mammalia: Dipodidae) In Der Gefangenschaft, Michael Stubbe, Annegret Stubbe, Ravčigijn Samjaa
Hohes Lebensalter Von Salpingotus Crassicauda Und Erfolgreiche Fortpflanzung Von Cardioeranius Paradoxus (Mammalia: Dipodidae) In Der Gefangenschaft, Michael Stubbe, Annegret Stubbe, Ravčigijn Samjaa
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Noch immer gelten zahlreiche Arten der zentralasiatischen Säugetierfauna als kaum bis wenig erforscht. Fundierte ökologische Untersuchungen an den mongolischen Springmausarten liegen bisher nicht vor. Sowohl Salpingotus crassicauda als auch Cardiocranius paradoxus sind durch ihre begrenzten Vorkommen in Kasachstan bzw. Tuva sogar im Rotbuch der Sowjetunion (1985, Literatur S. dort) verankert.
Ökologisches Monitoring Der Seen Der Mvr, A. Dulmaa
Ökologisches Monitoring Der Seen Der Mvr, A. Dulmaa
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Die Fischwirtschaft ist ein spezifischer Zweig in der Volkswirtschaft der MVR. Die Organisation der Fischwirtschaft erfordert eine wissenschaftliche Ausarbeitung seiner biologischen, technischen, technologischen und ökonomischen Grundlagen. Im Ergebnis hydrobiologischer Untersuchungen wurden bisher 600 verschiedene Benthos- und 208 Planktonorganismen gefunden, von denen mehr als 40 Arten bisher für die Wissenschaft unbekannt waren. Die Hydroflora erwies sich mit 196 Algenarten und mit ungefähr 50 Makrophyten als eigenständig. 75 Fischarten konnten nachgewiesen werden. Es wurde eine Klassifikation der Seen entsprechend ihrer Genese und ihrer biologischen und fischereiwirtschaftlichen Eigenschaften ausgearbeitet. Auf der Grundlage von ökologischen Untersuchungen der Limnofauna erfolgte eine biologische Begründung für eine …
Characteristic Of Balneologically Active Components And Microflora Under Extreme Conditions Of Mineral Waters Of The Mongolian People's Republic, G. M. Špejzer, L. A. Mineeva, N. M. Žigunova, T. N. Putjatina
Characteristic Of Balneologically Active Components And Microflora Under Extreme Conditions Of Mineral Waters Of The Mongolian People's Republic, G. M. Špejzer, L. A. Mineeva, N. M. Žigunova, T. N. Putjatina
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
The distribution of amino acids is irregular in mineral waters. Their content is minimum in cold carbonate waters of hydrocarbonate composition, the highest amino acid concentration does not exceed 0.640 mg N/l.
Hydrothermal solutions are enriched with amino-acids to the greatest extent, the amino contents coming up to 0.780 mg N/l in hydrotherms of sulfate-sodic composition. In thermal waters enriched with hydrosulfides. amino acids are present in quantities up to 1.710 mg N/l.
Mineralwässer wichtige Bestandteile der Biogeosphäre. Die darin enthaltenen spezifischen Komponenten bedingen ihre Wirksamkeit in biologischen Prozessen. die die Entstehung und Lebenstätigkeit von der Mikroflora bis zu den …
Artenliste Der Vögel Des Chubsugul-Gebietes, D. Sumjaa
Artenliste Der Vögel Des Chubsugul-Gebietes, D. Sumjaa
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Die Ornisliste der Chubsugulseezone erfaJ3t gegenwärtig 244 Arten (1973 - 168 Arten). Die Liste schlieJ3t Vertreter von 17 Ordnungen, 42 Familien und 129 Gattungen ein (62,4% von allen Vogelspezies der MVR). Für das Chubsugul-Gebiet sind 56 Vogel arten erstmals beobachtet worden, davon waren 5 neu für die Fauna der MVR (Larus hyperboreus, Arenaria interpres, Aquila heliaca, Tetrao parvirostris, Plectrophenax nivalis).
In der Ornithofauna lassen sich unterscheiden: Brutvogelarten und bedingt nistende Arten 206 (46 ansässig und 160 Zugvögel), Durchzieher - 22, ,Irrgäste - 12, nur im Winter vorkommende Arten - 4. Von den 244 Vogelarten …
Wasserinsekten Des Chubsugul-Sees In Der Nordmongolei, A. A. Ždanov, E. A. Erbaeva, K. V. Varychanova, N. A. Rožkova
Wasserinsekten Des Chubsugul-Sees In Der Nordmongolei, A. A. Ždanov, E. A. Erbaeva, K. V. Varychanova, N. A. Rožkova
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
In den Grundbiozönosen des Chubsugulsees spielen Wasserinsekten mit ca. 37 % der Anzahl und 24 % der Biomasse der Benthaltiere eine bedeutende Rolle. Die Trichoptera sind durch 22 Gattungen aus den Familien Rhyacophilidae (2 Gattungen), Glossosomatidae (4), Hydroptilidae (1). Phryganeidae (2), Limnephilidae (9). Coeridae (1), Brachycentridae (2), Leptoceridae (1) vertreten. Die Nachweishäufigkeit der Trichoptera in den Proben ist genügend hoch (bis zu 30 %), aber sie beträgt im Durchschnitt 5 % der Anzahl und 5 % der Biomasse des Zoobenthos.
Im Chubsugulsee wurden 20 Gattungen von Ephemeropteren gefunden, die zu folgenden 4 Familien gehören: Heptageniidae (5), Beatidae (5). Siphlonuridae (4), …
Weitere Beiträge Zur Ernährung Des Uhus Bubo Bubo (L., 1758) In Der Westmongolei, Michael Stubbe, Hermann Ansorge, R. Piechocki, U. Lange, Ravčigijn Samjaa, D. Bartuu
Weitere Beiträge Zur Ernährung Des Uhus Bubo Bubo (L., 1758) In Der Westmongolei, Michael Stubbe, Hermann Ansorge, R. Piechocki, U. Lange, Ravčigijn Samjaa, D. Bartuu
Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298
Von 4 Fundorten aus der Westmongolei, darunter erstmals aus dem Mongolischen Altai und dem diungarischen Bereich, wurden aus Uhu-Gewöllen in den Jahren 1980 bzw. 1982 1432 Vertebraten analysiert: 1335 Säugetiere (93,20 %) und 97 Vögel (6,20 %). Die Anzahl der Säugetierarten betrug 34, die der nachgewiesenen Vogelarten mindestens 38. Den wichtigsten qualitativen Be uteanteil decken die Vertreter der Arvicoliden (27,03 %) ab. In abgestufter Reihenfolge schlieJjen die Familien Dipodidae (23,74 %), Ochotonidae (20,74 %), Cricetidae (17,74 %), Leporidae (2,09 %) und Anatidae (1,60 %) an. Quantitativ wurden von den Uhus 216,6 kg konsumiert. 85,50 % der Biomasse entfielen auf Säuger, …
Multinuclear Magnetic Resonance Studies Of Lithium Binding And Transport In Human Erythrocytes, Maryceline Tiausas Espanol
Multinuclear Magnetic Resonance Studies Of Lithium Binding And Transport In Human Erythrocytes, Maryceline Tiausas Espanol
Dissertations
No abstract provided.
A Characterization Of Tampa Bay Sediments, L J. Doyle, G. R. Brooks, K. A. Fanning, E. S. Van Vleet, R. H. Byrne, N. J. Blake
A Characterization Of Tampa Bay Sediments, L J. Doyle, G. R. Brooks, K. A. Fanning, E. S. Van Vleet, R. H. Byrne, N. J. Blake
Reports
This initial phase of the project involves assessing the present state of knowledge of sediments in Tampa Bay and the identification of data gaps, or areas where more detailed information is required to achieve project objectives. The literature search produced 273 data sources that from their abstracts in the data base are applicable to the project (Appendix I). Data sources were reviewed by experts in the fields of sedimentology, nutrient chemistry, organic geochemistry, trace metal and radionuclide geochemistry, and benthic biology who then contributed the following summary sections.
13.2.4. Avian Botulism: Geographic Expansion Of A Historic Disease, Louis N. Locke, Milton N. Friend
13.2.4. Avian Botulism: Geographic Expansion Of A Historic Disease, Louis N. Locke, Milton N. Friend
Waterfowl Management Handbook
Avian botulism is a paralytic, often fatal disease of birds resulting from ingestion of toxin produced by the bacterium Clostridium botulinum. Waterfowl die-offs from the botulism are usually caused by type C toxin; sporadic die-offs among fish-eating birds, such as common loons (Gavia immer) and gulls, have been caused by type E toxin.
Not enough is known about avian botulism to precisely identify the factors leading to an outbreak. When an outbreak does occur, it is usually perpetuated by a well-understood bird-maggot cycle (Figure 1).
13.4.11. Control Of Purple Loosestrife, Daniel Q. Thompson
13.4.11. Control Of Purple Loosestrife, Daniel Q. Thompson
Waterfowl Management Handbook
Purple loosestrife is an herbaceous perennial weed that is native to Eurasia and probably arrived in eastern North America with early maritime traffic. The spread of this alien by 1900 (Fig. 1) was closely associated with canal and waterway traffic. By 1985 (Fig. 2), this aggressive weed had spread into all of the contiguous States north of the 35th parallel except Montana; similarly, all of the southern provinces of Canada had been invaded. In the last 20 years, loosestrife has become well established in reclamation projects and riparian wetlands in the West and Northwest. It has also invaded estuarine marshes …
Pleistocene And Holocene Carbonate Environments On San Salvador Island, Bahamas: A Field Trip Guide, H. Allen Curran, Roger J. Bain, James L. Carew, John E. Mylroie, James W. Teeter, Brian White
Pleistocene And Holocene Carbonate Environments On San Salvador Island, Bahamas: A Field Trip Guide, H. Allen Curran, Roger J. Bain, James L. Carew, John E. Mylroie, James W. Teeter, Brian White
Geosciences: Faculty Publications
Although isolated and small in size, San Salvador Island is in many ways a unique place - an all carbonates setting on a small, tectonically stable platform, surrounded by deep oceanic waters, and an historical footnote as the widely accepted first landing site of Christopher Columbus in the New World in 1492. Columbus' stay here was brief, and the major events of subsequent history largely have passed San Salvador by. This is not a tourist island; the natural beauty, floras, and faunas of the Bahamas are well preserved here.
The overview theme of this series of field excursions on San …
Editorial Board & Iowa Academy Of Science Officers And Directors
Editorial Board & Iowa Academy Of Science Officers And Directors
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
Demographic Responses To The Chemical Control Of Doublegee, F D. Panetta, R P. Randall
Demographic Responses To The Chemical Control Of Doublegee, F D. Panetta, R P. Randall
Experimental Summaries - Plant Research
Control of Doublegee in medic pasture, 88WH47. Competitive effect and response of Emex australis in a grazed animal pasture.
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, January 1989, College Of Engineering And Computer Science, Wright State University
Wright State University College Of Engineering And Computer Science Bits And Pcs Newsletter, January 1989, College Of Engineering And Computer Science, Wright State University
BITs and PCs Newsletter
A ten page newsletter created by the Wright State University College of Engineering and Computer Science that addresses the current affairs of the college.
Iowa Academy Of Science Directory, 1989-90: Officers, Committees, And Membership Roster, Iowa Academy Of Science
Iowa Academy Of Science Directory, 1989-90: Officers, Committees, And Membership Roster, Iowa Academy Of Science
Iowa Academy of Science Documents
Contents:
Board of Directors ... 5
Program Directors ... 6
Editors ... 7
Committees ... 9
Sections ... 24
Awards of Merit ... 29
Excellence in Science Teaching Awards ... 31
Past Presidents ... 33
Membership Roster ... 34
Constitution and Bylaws ... 50
Nesting Of Raptors Uncommon In Iowa: Summary And New Records, Dean M. Roosa, Jon Stravers
Nesting Of Raptors Uncommon In Iowa: Summary And New Records, Dean M. Roosa, Jon Stravers
Journal of the Iowa Academy of Science: JIAS
The nesting status of the Turkey Vulture, Bald Eagle, Northern Harrier, Sharp-shinned Hawk, Cooper's Hawk, Red-shouldered Hawk, Broad-winged Hawk, Swainson's Hawk, Peregrine Falcon, Common Barn-Owl, Burrowing Owl, Long-eared Owl and Short-eared Owl is reviewed and previously unpublished records added. Also the potential for the Northern Saw-whet Owl and Osprey to nest in Iowa is discussed. Although several species are on the brink of extirpation as part of Iowa's nesting avifauna, the Bald Eagle has returned as a regular nester. Over 100 previously unpublished nesting reports and some management recommendations are included.
The Scientist's Role In The Controversy Over Genetic Engineering, Regulation And Utilization Of Microorganisms: A Symposium Presented At The L00th Annual Meeting Of The Iowa Academy Of Science, Iowa State University, Ames, Iowa April 21-23, 1988: Introduction, Arthur K. Weissinger
Journal of the Iowa Academy of Science: JIAS
The introduction of technologies for the direct genetic manipulation or alteration of organisms offers tremendous promise of improved agronomic prosperity through the enhancement of existing agricultural systems and through development of alternative products and methods. These technologies also pose philosophical, socioeconomic, and environmental questions. A number of these questions were considered at the bioethics symposium that was held here at Iowa State last November, the purpose of which was to examine the social, ethical, regulatory, and legal issues associated with the application of cell culture, molecular biology, and other so-called biotechnologies to agriculture.
Public Policy On The Introduction Of Genetically Engineered Microorganisms, Anne K. Vidaver
Public Policy On The Introduction Of Genetically Engineered Microorganisms, Anne K. Vidaver
Journal of the Iowa Academy of Science: JIAS
This presentation raises questions of research needs and issues. Underlying assumptions are that only beneficial or useful microorganisms will be "released"; that extensive laboratory and contained experiments will have been done prior to introduction and live microorganisms can be confined within the areas of introduction. Evidence to support these assertions will be presented. Critical needs for progress in this area include: 1) Recognition that the nature of the product introduced into the environment is of primary significance, not how the organism was genetically altered or modified. 2) Recognition that microorganisms are introduced into the environment as part of our daily …
Editorial Board & Iowa Academy Of Science Officers And Directors
Editorial Board & Iowa Academy Of Science Officers And Directors
Journal of the Iowa Academy of Science: JIAS
No abstract provided.
A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr.
A Student Handbook For The Environmental Education / Outdoor School Program In The Middle School, Robert Charles Kenck Jr.
All Graduate Projects
The purpose of this project was to develop a student handbook that can be used from the onset of an environmental study through the inter-active field study. Students will use the handbook as they begin to study environmental education in the classroom. The handbook will continue to be used as each student attends a three day outdoor school to study firsthand their environment through field activities. The handbook will remain the property of the students.
Residual Influence Of Macronutrient Enrichment On The Aquatic Food Web Of An Okefenokee Swamp Abandoned Bird Rookery, J. Douglas Oliver, Steven A. Schoenberg
Residual Influence Of Macronutrient Enrichment On The Aquatic Food Web Of An Okefenokee Swamp Abandoned Bird Rookery, J. Douglas Oliver, Steven A. Schoenberg
Faculty Publications and Presentations
We present evidence for residual nutrient enrichment of diverse components of a blackwater marsh, by a biotic component of the ecosystem itself. Thousands of nesting white ibis (Eudocimus albus) that foraged over a 20-km radius fertilized a rookery with guano within Okefenokee Swamp. Georgia. USA. One to two yr after the birds abandoned it. this marsh showed continued enrichment effects. Elevated available phosphorus in sediments, as measured by equilibrium phosphate concentration, contributed to enhanced biomass of phytoplankton in the overlying water column. Planktivorous fish were greater in biomass than at reference sites. Experimental phosphorus and nitrogen fertilization of enclosures at …
Lake Mixing Dynamics And Water Quality Models, Heinz G. Stefan
Lake Mixing Dynamics And Water Quality Models, Heinz G. Stefan
Journal of the Minnesota Academy of Science
ABSTRACT-To forecast water quality changes or to evaluate the potential success of restoration measures in lakes, it is necessary to formulate "models" which relate lake water quality to the inflows and outflows of materials and energy. Concepts of dynamic deterministic (cause-effect) models and examples are presented. The relationship between internal thermo-hydraulic processes and water quality is stressed. Stratification mixing, and nutrient kinetics are included in these models.
Human Impacts To Minnesota Wetlands, Carol A. Johnston
Human Impacts To Minnesota Wetlands, Carol A. Johnston
Journal of the Minnesota Academy of Science
ABSTRACT-Minnesota's 3.6 million ha of wetlands have been impacted by a variety of human activities, including agricultural drainage, urbanization, water control, and nonpoint source pollution. More than half of Minnesota's wetlands have been destroyed since the first European settlers arrived, an average loss of about 35,600 ha/yr. Drainage for agriculture is the major cause of wetland loss in Minnesota, particularly in southern Minnesota and the Red River Valley. In addition to impacting wetlands directly, wetland drainage affects downstream areas by increasing flood flows, and releasing sediment and nutrients. Urban development and highway construction affect a smaller proportion of Minnesota's wetlands, …
Rottnest Island : A Reference List, Jennifer Browne
Rottnest Island : A Reference List, Jennifer Browne
Research outputs pre 2011
No abstract provided.
Friedrich Wöhler, John Alfred Heitmann
Friedrich Wöhler, John Alfred Heitmann
History Faculty Publications
Friedrich Wöhler synthesized urea in 1828 and thus first demonstrated that organic materials, heretofore believed to possess a vital force, need not be made exclusively within living organisms. He also isolated aluminum metal in 1827 and discovered the elements beryllium and yttrium.
Bacterial Quality Of Private Water Wells In Clark County, Arkansas, S. Conine, D. Cox, K. Mitchell, Clark Kuyper, Jimmy D. Bragg
Bacterial Quality Of Private Water Wells In Clark County, Arkansas, S. Conine, D. Cox, K. Mitchell, Clark Kuyper, Jimmy D. Bragg
Journal of the Arkansas Academy of Science
Most private water wells in Clark County appeared to be contaminated by bacteria, apparently entering the wells from surface water seepage. Eighteen to 24% of the wells investigated were positive for fecal contamination. Deeper wells were less often contaminated. More than one-half of the wells sampled exceeded recommended limits of inorganic chemicals for safe potable water. High concentrations of iron and manganese were most common, exceeding recommended limits in more than 40% of the wells
Evolution Of The Aeluroid Carnivora: Significance Of The Ventral Promontorial Process Of The Petrosal, And The Origin Of Basicranial Patterns In The Living Families, Robert M. Hunt Jr.
Evolution Of The Aeluroid Carnivora: Significance Of The Ventral Promontorial Process Of The Petrosal, And The Origin Of Basicranial Patterns In The Living Families, Robert M. Hunt Jr.
Department of Earth and Atmospheric Sciences: Faculty Publications
In studies of carnivoran phylogeny, the configuration and ontogenetic development of the auditory bulla enclosing the middle ear have been useful in tracing modern lineages to their first appearances in the mid-Cenozoic. Pre-Oligocene carnivorans, however, lack preserved bullae and have been difficult to relate to later Cenozoic groups. The carnivoran petrosal bone, because of its durability both in intact skulls and as an isolated element, can be tracked through Cenozoic time, and can supply new information on lineage continuity through its geometry and spatial relationships. Aeluroid carnivorans are united by a petrosal of characteristic shape, distinguished by a ventral promontorial …