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Articles 31 - 60 of 549
Full-Text Articles in Entire DC Network
Rejection Of Cowbird Eggs By Mourning Doves: A Manifestation Of Nest Usurpation? Brian D. Peer And Eric K. Bollinger, Eric K. Bollinger, Brian D. Peer
Rejection Of Cowbird Eggs By Mourning Doves: A Manifestation Of Nest Usurpation? Brian D. Peer And Eric K. Bollinger, Eric K. Bollinger, Brian D. Peer
Eric K. Bollinger
This article was printed in The Auk, Volume 115, No.4 (1998).
Rejection Of Cowbird Eggs By Mourning Doves: A Manifestation Of Nest Usurpation? Brian D. Peer And Eric K. Bollinger, Eric K. Bollinger, Brian D. Peer
Rejection Of Cowbird Eggs By Mourning Doves: A Manifestation Of Nest Usurpation? Brian D. Peer And Eric K. Bollinger, Eric K. Bollinger, Brian D. Peer
Faculty Research & Creative Activity
This article was printed in The Auk, Volume 115, No.4 (1998).
Rejection Of Cowbird Eggs By Mourning Doves: A Manifestation Of Nest Usurpation? Brian D. Peer And Eric K. Bollinger, Eric Bollinger, Brian Peer
Rejection Of Cowbird Eggs By Mourning Doves: A Manifestation Of Nest Usurpation? Brian D. Peer And Eric K. Bollinger, Eric Bollinger, Brian Peer
Faculty Research & Creative Activity
This article was printed in The Auk, Volume 115, No.4 (1998).
Grassland Birds And Habitat Structure In Sandhills Prairie Managed Using Cattle Or Bison Plus Fire, Randall Griebel, Stephen L. Winter, Allen Steuter
Grassland Birds And Habitat Structure In Sandhills Prairie Managed Using Cattle Or Bison Plus Fire, Randall Griebel, Stephen L. Winter, Allen Steuter
Great Plains Research: A Journal of Natural and Social Sciences
Grassland birds are known to respond to specific changes in habitat structure, such as plant height and density. However, the response of grassland bird communities to management induced changes in the regional habitat mosaic are less well understood. Grazing by ungulates and fire regimes play an important role in defining the habitat mosaic in the Great Plains. We provide information on bird abundance, distribution, and habitat structure from similar sandhill prairie landscapes managed traditionally with grazing by cattle (Bos taurus) and by a dynamic bison (Bos bison)-plus-fire regime. Although the two management regimes are dissimilar, only …
Monitoring The Mineral Status And Health Of Sheep Grazing On A Rehabilitated Bauxite Residue Stockpile And On Alkaloam Amended Pasture, Gerard M. Smith
Monitoring The Mineral Status And Health Of Sheep Grazing On A Rehabilitated Bauxite Residue Stockpile And On Alkaloam Amended Pasture, Gerard M. Smith
Animal production published reports
No abstract provided.
Changes In Small Mammal Community Attributes Associated With Increasing Pine Stand Age In Managed Pine Plantations In Southeastern Virginia, James Douglas Dolan
Changes In Small Mammal Community Attributes Associated With Increasing Pine Stand Age In Managed Pine Plantations In Southeastern Virginia, James Douglas Dolan
Biological Sciences Theses & Dissertations
Loblolly pine plantations were examined at different ages to identify small mammal community attributes in relation to the succession of the plant community. Forest floor and understory plant communities were characterized. Small mammals were collected by Fitch (live) traps and pitfall traps in four age classes during five seasons of study. Fitch live traps and pitfall traps were used in conjunction with one another to obtain the most accurate depiction of the small mammal community. Fitch traps accounted for 65 % of small mammal captures and 7 of 9 species captured. Small mammal abundance and biomass declined with increasing stand …
Fish & Wildlife News: September/October 1998
Fish & Wildlife News: September/October 1998
Fish and Wildlife News
Contents:
Mexican Wolf Pup Born in Wild 3
Group Proposes “Fishable Waters Act” 6
NCTC Offers “Virtual Tour” 8
Special Section: Recent LE Successes 10
Rare Fish on the Rebound in AZ 13
Service Firefighters Heed the Call 14
Web Group Sets the Standards 14
Prairie Learning Center Opens 15
The Adventures of Two Tigers 17
A Look at Midway Atoll NWR 18
Boating Campaign Promotes Clean Fun 20
Sevilleta NWR Goes Back in Time 21
Fish and Wildlife...In Brief 23
Whey Protein Edible Film Structures Determined By Atomic Force Microscope, L.E. Lent, L. S. Vanasupa, P. S. Tong
Whey Protein Edible Film Structures Determined By Atomic Force Microscope, L.E. Lent, L. S. Vanasupa, P. S. Tong
Dairy Science
Atomic force microscopy was used to study edible films produced from whey proteins. The films were imaged under ambient conditions with no special sample preparation. Low resolution imaging of areas from 10 μm to 150 μm on a side was performed in the contact mode. Higher resolution scans of 350 nm to 2,700 nm required use of the noncontact imaging mode. Features about the same size as the primary protein in whey, beta-lactoglobulin (7 nm), were identified in the film samples. Molecular aggregates in the range of 1 μm, reported in other studies using transmission electron microscopy of whey protein …
Two Matriarchs Speak, Robert H.I. Dale
Two Matriarchs Speak, Robert H.I. Dale
Scholarship and Professional Work - LAS
Book review for the following titles:
Elephants. By Joyce Poole, Stillwater, MN: Voyageur Press, 1997, 72 pages. $14.95 softcover
Silent Thunder: In the Presence of Elephants. By Katharine Payne, New York: Simon & Schuster, 1998, 286 pages. $25.00 hardcover
Final Report: Future Management Of The Aquatic Charter Industry In Western Australia., Tour Operators Fishing Working Group
Final Report: Future Management Of The Aquatic Charter Industry In Western Australia., Tour Operators Fishing Working Group
Fisheries management papers
The Tour Operator's Fishing Working Group (TOFWG) was established by the Hon Monty House MLA, Minister for Fisheries, in recognition of the growing importance of this element of the tourism industy and in recognition of the need to ensure that the development of this industry occurs in an ecologically sustainable framework across the Sate. The recommendations outlined in this report establish a management framework within which the aquatic charter industry may continue to develop, and which will ensure the long-term sustainability of the natural resources on which the industry is based.
Evolution And Animal Welfare, Marian Stamp Dawkins
Evolution And Animal Welfare, Marian Stamp Dawkins
Assessment of Animal Welfare Collection
Animal welfare is a topic often thought to reside outside mainstream biology. The complexity of the methods used to assess welfare (such as health, physiology, immunological state, and behavior) require an understanding of a wide range of biological phenomena. Furthermore, the "welfare" of an animal provides a framework in which a diversity of its responses can be understood as fitness-enhancing mechanisms. Different methods for assessing animal welfare are discussed, with particular emphasis on the role of an animal's own choices and reinforcement mechanisms. No part of biology is as yet able to explain consciousness, but by confronting the possibility that …
The Mortenson Ranch: Cattle And Trees At Home On The Range. A Restoration Guidebook, Susan E. Boettcher, W. Carter Johnson, Scott Kronberg, F. Robert Gartner, Clarence Todd, Jeff Mortenson, Scott Fausti
The Mortenson Ranch: Cattle And Trees At Home On The Range. A Restoration Guidebook, Susan E. Boettcher, W. Carter Johnson, Scott Kronberg, F. Robert Gartner, Clarence Todd, Jeff Mortenson, Scott Fausti
Natural Resource Management Faculty Publications
Early agriculture on western rangeland met with little success and resulted in serious consequences including soil erosion, loss of native woodlands and wildlife, and economic ruin. The Mortenson family in Stanley County, South Dakota, has been engaged in restoring degraded rangeland on their ranch for more than 50 years. Their primary goal has been to return the land to its condition prior to white settlement while maintaining a profitable cattle ranching operation. In recent years the ranch has served as a model of successful ranching based on a conservation ethic. This guidebook summarizes the restoration techniques and grazing regime used …
Table Of Contents And Masthead [September 1998]
Table Of Contents And Masthead [September 1998]
Nebraska Bird Review
The Nebraska Bird Review is published quarterly by the Nebraska Ornithologists' Union, Inc., as its official journal, and is sent to members not in arrears of dues. Annual subscription rates (on a calendar-year basis only): $14.00 in the United States; $18.00 for all foreign countries, payable in advance. Single copies are $4.00 each, postpaid, in the United States, and $5.00 elsewhere. Send orders for back issues to Mary Lou Prichard, NOU Librarian, University of Nebraska State Museum, Lincoln, NE 68588-0514.
Memberships in NOU (on a calendar year basis only): Active, $15.00; Sustaining, $25.00; Student, $10.00; Family Active, $20.00; Family Sustaining,$30.00; …
Nebraska Bird Review (September 1998) 66(3), Whole Issue
Nebraska Bird Review (September 1998) 66(3), Whole Issue
Nebraska Bird Review
A Half Century of Winter Bird Surveys in Lincoln and Scottsbluff ... 74
Summer Field Report, June to July, 1998, Introduction ... 84
Species Accounts ... 86
Book Review: Baby Bird Portraits by George Miksch Sutton ... 100
1998 Midwinter Eagle Survey and Ten-Year Summary Tables ... 101
Central Nebraska Public Power Facilities Eagle Count ... 108
Nebraska Bird Count for 1997 Addendum ... 110
Bald Eagle Counts At Two Facilities Owned And Operated By The Central Nebraska Public Power And Irrigation District, Mark M. Peyton, Rodger Knaggs
Bald Eagle Counts At Two Facilities Owned And Operated By The Central Nebraska Public Power And Irrigation District, Mark M. Peyton, Rodger Knaggs
Nebraska Bird Review
Since 1988 the Central Nebraska Public Power and Irrigation District (Central) has provided, free to the public, a bald eagle viewing facility in its Johnson #2 Hydroelectric Plant south of Lexington, Dawson County, and since 1990 a facility near the outlet of the Kingsley Hydroelectric Plant at Lake Ogallala in Keith County.
Central provides binoculars and viewing scopes at both locations as well as personnel to answer questions and provide assistance. These individuals also conducted daily eagle surveys at the facilities.
Nebraska Bird Count For 1997 Addendum
Nebraska Bird Count For 1997 Addendum
Nebraska Bird Review
Site and Party Data
Observers
Total Species
Total Individuals
CW Birds
Summer Field Report, June-July, 1998, W. Ross Silcock, Joel G. Jorgensen
Summer Field Report, June-July, 1998, W. Ross Silcock, Joel G. Jorgensen
Nebraska Bird Review
First, some housekeeping is in order. . . . You will also notice the new order of species (AGAIN!!), reflecting the latest American Ornithologists' Union Checklist, published this spring. The most noticeable change concerns the placement of shrikes and vireos between flycatchers and corvids; but the order of species within some genera also differs, especially among the waterfowl, where, for instance, swans now follow the geese.
And now let's turn to the birds! As in most summers, many species went about their business in routine fashion, hence the notation "Routine Reports" for many.
We encourage observers to note and to …
Perkinsus Marinus Tissue Distribution And Seasonal Variation In Oysters Crassostrea Virginica From Florida, Virginia And New York, Lm Oliver, Ws Fisher, Se Ford, Lm Ragone Calvo, Em Burreson, Et Al
Perkinsus Marinus Tissue Distribution And Seasonal Variation In Oysters Crassostrea Virginica From Florida, Virginia And New York, Lm Oliver, Ws Fisher, Se Ford, Lm Ragone Calvo, Em Burreson, Et Al
VIMS Articles
Perkinsus marinus infection intensity was measured in eastern oysters Crassostrea virginica collected in October and December 1993, and March, May, and July 1994 from 3 U.S. sites: Apalachicola Bay (FL), Chesapeake Bay (VA), and Oyster Bay (Mr'). Gill, mantle, digestive gland. adductor muscle, hemolymph, and remaining tissue (including gonadal material and rectum) were dissected from 20 oysters from each site at each collection time. Samples were separately diagnosed for P. marin us infections by incubation in Ray's Fluid Thioglycollate Medium (RFTM) and subsequent microscopic quantification of purified enlarged hypnospores. At all sampling times and sites, average P. marinus infection intensity …
Molecular Insights Into The Population Structures Of Cosmopolitan Marine Fishes, John Graves
Molecular Insights Into The Population Structures Of Cosmopolitan Marine Fishes, John Graves
VIMS Articles
Many marine fishes are cosmopolitan, occurring in continuous (e.g., circumtropical) or discontinuous (e.g., antitropical) distributions. Little is known of the genetic basis of population structure of these species, even though several support extensive fisheries. To develop a database that would facilitate comparison of the population structures among cosmopolitan fishes we consistently included restriction fragment length polymorphism (RFLP) analysis of mitochondrial DNA (mtDNA) as a common approach to our investigations of these species. This article presents a review of those analyses. Considerable intra`specific genetic variation was revealed within all cosmopolitan marine species. Continuously distributed species displayed population structures ranging from a …
1998 Midwinter Eagle Survey For Nebraska Including Summary Tables For The 1980-1998 Period From The Nebraska Game And Parks Commission, John J. Dinan
1998 Midwinter Eagle Survey For Nebraska Including Summary Tables For The 1980-1998 Period From The Nebraska Game And Parks Commission, John J. Dinan
Nebraska Bird Review
Mild temperatures were prevalent in the weeks prior to this year's survey; however, temperatures cold enough to form a thin layer of ice on some reservoirs and lakes occurred between aerial surveys. Three of the aerial surveys were conducted on the 6th and 7th of January and one was conducted on the 13th. The survey route that includes the Platte River from Kearney to Plattsmouth and the Loup River was not surveyed this year because of persistent foggy conditions.
Temperatures recorded during the 1998 survey were variable, ranging from 5 to 40 degrees F. The Niobrara River was 50 to …
Book Review: Baby Bird Portraits By George Miksch Sutton: Watercoiors In The Field Museum By Johnsgard, P. A. (1998), John J. Janovy Jr.
Book Review: Baby Bird Portraits By George Miksch Sutton: Watercoiors In The Field Museum By Johnsgard, P. A. (1998), John J. Janovy Jr.
Nebraska Bird Review
George M. Sutton's baby bird portraits are his most captivating works. The subjects are isolated against a stark, raw-paper background, and they stare out at the viewer with eyes typically naive but alert. Sutton's artistic mastery of the foot is integral to the underlying biology in these pictures: sturdy and sure against the table for a ruffed grouse, curled inward and near useless for a gallinule on dry land, and almost casually clutching a twig, the hallux resting loosely, for a newly fledged grosbeak. The match between these pictures and Paul Johnsgard's text is perfect. In his first two paragraphs, …
"A Half-Century Of Winter Bird Surveys At Lincoln And Scottsbluff, Nebraska", Paul A. Johnsgard
"A Half-Century Of Winter Bird Surveys At Lincoln And Scottsbluff, Nebraska", Paul A. Johnsgard
Nebraska Bird Review
Since 1900, the National Audubon Society has sponsored annual "Christmas bird counts" during the two-week period encompassing Christmas; and as a result, long-term data on winter bird populations have accumulated, especially for some locations. The first two such counts in Nebraska were made in 1909 and in 1912 in Lincoln. While similar counts were made in Omaha from 1909 to 1911, no further counts were conducted elsewhere in the state until the 1940's. Beginning in 1947 and continuing to the present, an unbroken series of counts were made in Lincoln, usually by members of the University Place Bird Club, the …
A Half-Century Of Winter Bird Surveys At Lincoln And Scottsbluff, Nebraska, Paul A. Johnsgard
A Half-Century Of Winter Bird Surveys At Lincoln And Scottsbluff, Nebraska, Paul A. Johnsgard
Papers in Ornithology
Since 1900, the National Audubon Society has sponsored annual "Christmas bird counts" during the two-week period encompassing Christmas; and as a result, long-term data on winter bird populations have accumulated, especially for some locations. The first two such counts in Nebraska were made in 1909 and in 1912 in Lincoln. Beginning in 1947 and continuing to the present, an unbroken series of counts were made in Lincoln, usually by members of the Uni¬versity Place Bird Club, the Audubon Naturalist's Club, or the Wachiska chapter of the National Audubon Society. For Scottsbluff, an unbroken set of counts extends from 1949 to …
Histopathological Alterations Associated With Perkinsus Spp. Infection In The Softshell Clam Mya Arenaria, Sm Mclaughlin, M Faisal
Histopathological Alterations Associated With Perkinsus Spp. Infection In The Softshell Clam Mya Arenaria, Sm Mclaughlin, M Faisal
VIMS Articles
Softshell clams (Mya arenaria) collected from the Chester River in the upper Chesapeake Bay showed the presence of Perkinsus spp, in similar to 12 % (28/240) Of clams examined. The infection seems to run a mild course with the host prevailing in encapsulating invading parasites. The gills appear to be the major site of infection, however, the parasite was also found in the digestive gland, gonads, and kidneys and occasionally in the tissue and sinuses of adductor muscles. Typically, clusters of protozoal cells were embedded in on amorphous PAS-positive substrate and were surrounded by one or more layers of granulocytes. …
Advice To Flight Crews Concerning Wildlife Hazards To Aircraft, Paul F. Eschenfelder
Advice To Flight Crews Concerning Wildlife Hazards To Aircraft, Paul F. Eschenfelder
Paul F. Eschenfelder
No abstract provided.
Bats Of The Antillean Island Of Grenada: A New Zoogeographic Perspective, Hugh H. Genoways, Carleton J. Phillips, Robert J. Baker
Bats Of The Antillean Island Of Grenada: A New Zoogeographic Perspective, Hugh H. Genoways, Carleton J. Phillips, Robert J. Baker
University of Nebraska State Museum: Mammalogy Papers
The island of Grenada is the southernmost of the Lesser Antilles, lying 130 km north of Trinidad and 135 km north of the Venezuelan mainland. It measures 34 km north to south and 19 km east to west and has an area of 312 square km. Grenada and the Grenadines northward to Bequia stand on the large submarine Grenada Bank. At 183 m depth, the bank is 179 km long. The Grenadines cover the bank to its northern end, but the bank extends for 39 km south of Grenada with no islands. During the last Ice Age, Grenada and the …
13th Biennial Cheese Industry Conference, Various Authors
13th Biennial Cheese Industry Conference, Various Authors
Cheese Industry Conference
No abstract provided.
Kentucky Warbler (Vol. 74, No. 3), Kentucky Library Research Collections
Kentucky Warbler (Vol. 74, No. 3), Kentucky Library Research Collections
Kentucky Warbler
No abstract provided.
The Effect Of Calf Morbidity On Feedlot Performance And Profitability, Jessica Gentry
The Effect Of Calf Morbidity On Feedlot Performance And Profitability, Jessica Gentry
Masters Theses & Specialist Projects
Two "Value-Added Calf (VAC) Programs were evaluated relative to feedlot performance and profitability. Two hundred seventy-three head of feeder calves were included in this study. Ninety-five Certified: Preconditioned for Health (CPH), ninety KCA Gold Tag and eighty-eight "Sale Barn" cattle were fed at Horton's Research Feedyard in Fort Lupton, Colorado. No background information regarding the health status of the Sale Barn cattle was known. Cattle were purchased in December 1997 and were entered in the Rocky Mountain Ranch-to-Rail program on January 6, 1998. The cattle were checked daily for illness and taken to a hospital pen for treatment if symptoms …
Radiocarbon From Nuclear Testing Applied To Age Validation Of Black Drum, Pogonias Cromis, Steven E. Campana, Cynthia M. Jones
Radiocarbon From Nuclear Testing Applied To Age Validation Of Black Drum, Pogonias Cromis, Steven E. Campana, Cynthia M. Jones
OES Faculty Publications
Radiocarbon ((14)C) in the world's oceans increased sharply between 1950 and 1970 as a result of the atmospheric testing of nuclear weapons. Through comparison with the (14)C time series reconstructed from atmospheric measurements and marine carbonates, Kalish, in 1993, used the (14)C concentration measured in fish otolith cores as a means of confirming the annulus-based age estimates for some South Pacific fish species. Here we report the pre-and postbomb (14)C chronology of North Atlantic adult black drum (Pogonias cronis), assumed to be between 15 and 42 yr of age on the basis of otolith annulus counts. According to …