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Articles 121 - 150 of 193
Full-Text Articles in Entire DC Network
Ducks, Geese, And Swans Of The World: Sources Cited, Paul A. Johnsgard
Ducks, Geese, And Swans Of The World: Sources Cited, Paul A. Johnsgard
Ducks, Geese, and Swans of the World by Paul A. Johnsgard
350+ citations
Waterfowl Of North America: Sources, Paul A. Johnsgard
Waterfowl Of North America: Sources, Paul A. Johnsgard
Waterfowl of North America, Revised Edition (2010) by Paul A. Johnsgard
Approximately 500 citations.
See also the updated bibliography in the 2010 supplement: "North America’s Ducks, Geese and Swans in the 21st Century"
Distillers Grains And Livestock Are Important To Ethanol Energy And Greenhouse Gas Balance, Virgil R. Bremer, Adam J. Liska, Haishun Yang, Daniel T. Walters, Galen E. Erickson, Terry J. Klopfenstein, Richard K. Koelsch, Kenneth G. Cassman
Distillers Grains And Livestock Are Important To Ethanol Energy And Greenhouse Gas Balance, Virgil R. Bremer, Adam J. Liska, Haishun Yang, Daniel T. Walters, Galen E. Erickson, Terry J. Klopfenstein, Richard K. Koelsch, Kenneth G. Cassman
Nebraska Beef Cattle Reports
A life cycle assessment of the impact of distillers grains plus solubles (DGS) on mitigation of energy and greenhouse gas (GHG) emissions comparing corn ethanol to gasoline demonstrates the importanceof feeding wet DGS (WDGS) to feedlot cattle to optimize the environmental benefit of ethanol production relative to gasoline. Ethanol produced in Nebraska has a superior environmentalimpact compared to ethanol produced in Iowa or Texas.
Temporal Shifts In Demography And Life History Of An Anadromous Alewife Population In Connecticut, Justin P. Davis, Eric T. Schultz
Temporal Shifts In Demography And Life History Of An Anadromous Alewife Population In Connecticut, Justin P. Davis, Eric T. Schultz
EEB Articles
Populations of anadromous alewives (Alosa pseudoharengus) are declining throughout much of their range, particularly in southern New England where fishery moratoriums have recently been instituted in three states. The alewife run at Bride Brook, a coastal stream in East Lyme, Connecticut, was studied from 2003-06 to assess shifts in demography and life history. Annual censuses of abundance, along with sampling for size, age, and spawning history structure were conducted. These data were compared to similar data in 1966-67 at this site. Recent alewife runs at Bride Brook featured lower abundance and younger, smaller fish that were less likely to be …
Natural Ice-Nucleating Bacteria Increase The Freezing Tolerance Of The Intertidal Bivalve Geukensia Demissa, Alexander M. Mccorkle
Natural Ice-Nucleating Bacteria Increase The Freezing Tolerance Of The Intertidal Bivalve Geukensia Demissa, Alexander M. Mccorkle
Biology Honors Papers
Instead of avoiding freezing, freeze tolerant invertebrates actively initiate controlled ice nucleation at relatively high sub-zero temperatures in extracellular compartments. Most produce proteinaceous ice-nucleators in their hemolymph, however the intertidal bivalve mollusc Geukensia demissa lacks this ability. Instead it utilizes at least one strain of ice-nucleation active (INA) bacteria, Pseudomonas fulva, present in seawater, to induce crystallization in the pallial fluid that fills its mantle cavity. In this study, two additional INA bacteria strains were isolated from the palial fluid of Geukensia demissa: Psychrobacter sp. and Shewanella sp. The ice-nucleation activity of both strains was characterized and Psychrobacter was found …
Fisheries Research Report No. 184 - Macroscopic And Microscopic Description Of Snapper (Pagrus Auratus) Gonads From Shark Bay, Western Australia, Michael C. Mackie, Gary Jackson, Nadia E. Tapp, Jeffrey V. Norriss, Adrian Thomson
Fisheries Research Report No. 184 - Macroscopic And Microscopic Description Of Snapper (Pagrus Auratus) Gonads From Shark Bay, Western Australia, Michael C. Mackie, Gary Jackson, Nadia E. Tapp, Jeffrey V. Norriss, Adrian Thomson
Fisheries Research Reports
Since 1997, research on snapper (Pagrus auratus, Sparidae) in the inner gulfs of Shark Bay has focussed on providing biological information required for the management of the regionally important recreational fishery. A major component of this research has been a comprehensive investigation of snapper reproductive biology to determine size and age at maturity, the timing of the spawning season and to estimate batch fecundity. This research has necessitated a review of the macroscopic staging system used for P. auratus in Western Australian waters and the development of a more detailed microscopic system to allow accurate analyses of histological material. Based …
Fisheries Research Report No. 187 - Management And Monitoring Of Fish Spawning Aggregations Within The West Coast Bioregion Of Western Australia, Michael C. Mackie
Fisheries Research Report No. 187 - Management And Monitoring Of Fish Spawning Aggregations Within The West Coast Bioregion Of Western Australia, Michael C. Mackie
Fisheries Research Reports
Final FRDC Report – Project Number 2004/051
Objectives
1. To identify species that aggregate to spawn within the WCB and to describe (e.g. location, size, timing, nature) the aggregations of key demersal species such as pink snapper and dhufish.
2. To investigate the biology, ecology and fishery for Samson fish with emphasis on the sports fishery targeting deep water spawning aggregations west of Rottnest Island.
3. To establish methods and protocols for monitoring fish aggregations within the WCB.
4. To review relevant information and provide advice on the impact of aggregation fishing and the management of aggregating fish species in …
Birds Of The Great Plains: Family Vireonidae (Vireos), Paul A. Johnsgard
Birds Of The Great Plains: Family Vireonidae (Vireos), Paul A. Johnsgard
Birds of the Great Plains (Revised Edition, 2009) by Paul Johnsgard
Black-capped Vireo
White-eyed Vireo
Bell Vireo
Gray Vireo
Yellow-throated Vireo
Solitary Vireo
Red-eyed Vireo
Philadelphia Vireo
Warbling Vireo
Birds Of The Great Plains: References, Paul A. Johnsgard
Birds Of The Great Plains: References, Paul A. Johnsgard
Birds of the Great Plains (Revised Edition, 2009) by Paul Johnsgard
A 21-page bibliography, including REGIONAL AND STATE REFERENCES and REFERENCES ON INDIVIDUAL SPECIES. Approximately 400 entries, through 1979.
An updated list of references will be found at the end of the new essay "Three Decades of Change in Great Plains Birds."
Birds Of The Great Plains: Family Parulidae (Wood Warblers), Paul A. Johnsgard
Birds Of The Great Plains: Family Parulidae (Wood Warblers), Paul A. Johnsgard
Birds of the Great Plains (Revised Edition, 2009) by Paul Johnsgard
Black-and-white Warbler
Prothonotary Warbler
Swainson Warbler
Wonn-eating Warbler
Golden-winged Warbler
Blue-winged Warbler
Tennessee Warbler
Nashville Warbler
Northern Parula
Yellow Warbler
Magnolia Warbler
Cape May Warbler
Black-throated Blue Warbler
Yellow-rumped Warbler (Myrtle and Audubon Warblers)
Black-throated Green Warbler
Cerulean Warbler
Blackburnian Warbler
Yellow -throated Warbler
Chestnut-sided Warbler
Bay-breasted Warbler
Pine Warbler
Prairie Warbler
Palm Warbler
Ovenbird
Northern Waterthrush
Louisiana Waterthrush
Kentucky Warbler
Mourning Warbler
MacGillivray Warbler
Conunon Yellowthroat
Yellow -breasted Chat
Hooded Warbler
Canada Warbler
American Redstart
Birds Of The Great Plains: Family Strigidae (Typical Owls), Paul A. Johnsgard
Birds Of The Great Plains: Family Strigidae (Typical Owls), Paul A. Johnsgard
Birds of the Great Plains (Revised Edition, 2009) by Paul Johnsgard
Screech Owl
Great Horned Owl
Burrowing Owl
Barred Owl
Great Gray Owl
Long-eared Owl
Short-eared Owl
Saw-whet Owl
Birds Of The Great Plains: Family Turdidae (Thrushes, Bluebirds, And Solitaires), Paul A. Johnsgard
Birds Of The Great Plains: Family Turdidae (Thrushes, Bluebirds, And Solitaires), Paul A. Johnsgard
Birds of the Great Plains (Revised Edition, 2009) by Paul Johnsgard
American Robin
Wood Thrush
Hermit Thrush
Swainson Thrush
Veery
Eastern Bluebird
Mountain Bluebird
Townsend Solitaire
Unionoida (Mollusca: Margaritiferidae, Unionidae) In Arkansas, Third Status Review, John L. Harris, William R. Posey Ii, C. L. Davidson, Jerry L. Farris, S. R. Oetker, J. N. Stoeckel, B. G. Crump, M. S. Barnett, H. C. Martin, J. H. Seagraves, M. W. Matthews, R. Winterringer, C. Osborne, Alan D. Christian, N. J. Wentz
Unionoida (Mollusca: Margaritiferidae, Unionidae) In Arkansas, Third Status Review, John L. Harris, William R. Posey Ii, C. L. Davidson, Jerry L. Farris, S. R. Oetker, J. N. Stoeckel, B. G. Crump, M. S. Barnett, H. C. Martin, J. H. Seagraves, M. W. Matthews, R. Winterringer, C. Osborne, Alan D. Christian, N. J. Wentz
Journal of the Arkansas Academy of Science
We analyzed stream inventories, phylogeographic studies, community and population estimates, life history and reproductive biology research, and suitable habitat investigations conducted from 1997-2008, as well as the Arkansas Natural Heritage Commission mussel database, to update the conservation status for all native freshwater unionoid bivalves thought to occur in Arkansas. Prior to this study, Harris et al. (1997) reviewed the distribution and status of 75 freshwater mussels considered native to Arkansas and ranked 22 species as endangered, threatened or special concern. We now recognize 85 mussel taxa in Arkansas; however, some of those have yet to be described or their nomenclature …
Population Density, Circulating Testosterone And Dawn Chorus Behaviour In White-Throated Sparrows (Zonotrichia Albicollis), Simon Richard Hall
Population Density, Circulating Testosterone And Dawn Chorus Behaviour In White-Throated Sparrows (Zonotrichia Albicollis), Simon Richard Hall
Theses and Dissertations (Comprehensive)
An integrative approach to biological research has facilitated the study not only of specific phenomena, but of the connections between these phenomena. A particularly striking example is that of the relationships between testosterone, social behavior, and social context. Increased levels of testosterone increase the frequency of aggressive behaviors and reduce the quality of parental care in many songbird species, and these changes in behavior can affect the surrounding social environment. Different social contexts, population density as a readily studied example, affect the cues that control the release of testosterone into the bloodstream. The distinct tan-stripe and white-stripe phenotypic morphs of …
Influential Parasites: Importance Of Haemosporidian Parasite Infection In The White-Throated Sparrow, Amanda P. Jamison
Influential Parasites: Importance Of Haemosporidian Parasite Infection In The White-Throated Sparrow, Amanda P. Jamison
All-Inclusive List of Electronic Theses and Dissertations
The study of parasite-mediated selection, as originally postulated by Hamilton and Zuk ( 1982) in birds is an area of intense study as it allows us to test the significance of the relationship between host and parasite. Recent developments of resistance to treatments in humans for parasite induced disease, creates a place for this important research and emphasizes the need to find the connections and interactions in this relationship between ecology and infectious disease. The development of new molecular techniques has made the study of parasitism in birds and mammals easier and provides an efficient sensitive . methodology to detect …
Animal Minds, Cognitive Ethology, And Ethics, Colin Allen, Marc Bekoff
Animal Minds, Cognitive Ethology, And Ethics, Colin Allen, Marc Bekoff
Sentience Collection
Our goal in this paper is to provide enough of an account of the origins of cognitive ethology and the controversy surrounding it to help ethicists to gauge for themselves how to balance skepticism and credulity about animal minds when communicating with scientists. We believe that ethicists’ arguments would benefit from better understanding of the historical roots of ongoing controversies. It is not appropriate to treat some widely reported results in animal cognition as if their interpretations are a matter of scientific consensus. It is especially important to understand why loose references to ‘‘cognitive ethology’’ by philosophers can signal ignorance …
Managing The Recreational Catch Of Demersal Scalefish On The West Coast. Future Management Scenarios For Community Consideration, Jon Ford (Minister For Fisheries; The Kimberley, Pilbara And Gascoyne)
Managing The Recreational Catch Of Demersal Scalefish On The West Coast. Future Management Scenarios For Community Consideration, Jon Ford (Minister For Fisheries; The Kimberley, Pilbara And Gascoyne)
Fisheries Management Papers
This paper discusses the major issues around controlling the total recreational catch. It also considers some of the tools available to manage the catch to specific target levels. The sustainability of fish species must be a key driver. However, the impacts on the social amenity of recreational fishing must also be taken into account. Any particular tool, if used on its own and to its full extent, may be rather “blunt” in its application and its impacts unacceptable to large parts of the community. The most effective and acceptable management package will probably be a mix of tools, supported by …
Reproductive Cycles Of The Pearl Oysters, Pinctada Fucata (Gould) And Pinctada Margaritifera (Linnaeus) (Bivalvia: Pteriidae) In Southwestern Taiwan Waters, Jiuan-Jiuan Hwang
Reproductive Cycles Of The Pearl Oysters, Pinctada Fucata (Gould) And Pinctada Margaritifera (Linnaeus) (Bivalvia: Pteriidae) In Southwestern Taiwan Waters, Jiuan-Jiuan Hwang
Journal of Marine Science and Technology–Taiwan
The reproductive cycles of the pearl oysters Pinctada fucata (Gould) and Pinctada margaritifera (Linnaeus) were examined based on 339 and 284 specimens, collected in southwestern Taiwan. Except for the month of December 2002, Pinctada fucata were collected during the periods from March 2002 to September 2003. Pinctada margaritifera were collected over two periods: from March 2002 to November 2002 and from June 2003 to September 2003. Histological observations on gonadal development indicated that Pinctada fucata and Pinctada margaritifera were protandrous hermaphrodites, and both species exhibited different annual cyclical patterns, in which maturity peaked in May and October for Pinctada fucata, …
A Sustainable Future For Fishing On Christmas Island. A Draft Five-Year Strategy For Managing Commercial, Recreational And Charter Fishing., Department Of Fisheries Western Australia.
A Sustainable Future For Fishing On Christmas Island. A Draft Five-Year Strategy For Managing Commercial, Recreational And Charter Fishing., Department Of Fisheries Western Australia.
Fisheries Management Papers
This draft strategy was developed by the Department of Fisheries, Western Australia, hereafter known as the “Department of Fisheries” which has responsibility for managing fish resources (within Territorial waters out to 12 nautical miles) on behalf of the Commonwealth Department of Transport and Regional Services (DoTARS), through the applied Fish Resources Management Act (FRMA) (WA)(CI) (the “Applied Act”). The Applied Act provides a legislative framework that allows for management arrangements to be developed specifically for Christmas Island. The management of fisheries in Western Australia uses an adaptive approach which balances the need for the effective management of fish stocks with …
Shark Bay Prawn And Scallop Fisheries. Draft Review Report, Department Of Fisheries Western Australia
Shark Bay Prawn And Scallop Fisheries. Draft Review Report, Department Of Fisheries Western Australia
Fisheries Management Papers
In recent times, the Department of Fisheries has received representations from both sectors about the ongoing interaction of the fisheries and their respective management settings. As a result, a decision was made to comprehensively review the fisheries, taking into account matters of fishery sustainability and gear interactions, together with industry economics and market considerations. The review has also addressed research requirements to ensure an appropriate scientific basis for decision-making into the future.
Drive-By Netting: A Technique For Capturing Grebes And Other Diving Waterfowl, Joe N. Caudell, Michael R. Conover
Drive-By Netting: A Technique For Capturing Grebes And Other Diving Waterfowl, Joe N. Caudell, Michael R. Conover
Human–Wildlife Interactions
We describe a new method (drive-by netting) for capturing grebes (Podiceps spp.) and other birds that dive under water to escape capture. We used a floating gill net to capture 203 eared grebes (Podiceps nigricollis) in 20 days in 1999 on the Great Salt Lake (GSL), 652 eared grebes in 41 days on the GSL in 2000, and 409 grebes in 20 days in 2001. Other species captured during the 2000 and 2001 fi eld seasons included 1 western grebe (Aechmophorus occidentalis), 9 ruddy ducks (Oxyura jamaicensis), and 1 Canada goose (Branta …
Comparative Genomic Analyses And Expression Of A Set Of Overlapping Open Reading Frames Of Frog Virus 3, Type Species Of Ranavirus (Family Iridoviridae), Wendy Guat Hoon Tan
Comparative Genomic Analyses And Expression Of A Set Of Overlapping Open Reading Frames Of Frog Virus 3, Type Species Of Ranavirus (Family Iridoviridae), Wendy Guat Hoon Tan
Dissertations
Frog virus 3 (FV3) is the type species member of the genus Ranavirus (family Iridoviridae ). To better understand the molecular mechanisms involved in the replication of FV3, including transcription of its highly methylated DNA genome, the complete nucleotide sequence of the FV3 genome has been determined. The FV3 genome is 105, 903 base pairs long excluding the terminal redundancy. The G+C content of FV3 genome is 55% and it encodes 98 non-overlappingpotential open reading frames (ORFs) containing 50 to 1293 amino acids. Eighty-four ORFs have significant homology to known proteins of other iridoviruses, whereas 14 are unique FV3 ORFs. …
Proceedings Of The Western Australian Dhufish Workshop 2004, Mark Pagano, Terry Fuller
Proceedings Of The Western Australian Dhufish Workshop 2004, Mark Pagano, Terry Fuller
Fisheries Occasional Publications
The Western Australian Dhufish Workshop 2004 was a joint project between Recfishwest and the Western Australian Department of Fisheries.
The workshop incorporated presentations from the Department of Fisheries, Recfishwest, the Western Australian Fishing Industry Council, Murdoch University and Challenger TAFE to showcase current knowledge relating to the iconic dhufish in Western Australia. The perspectives of a recreational fisher, a commercial wetline operator and a metropolitan charter boat operator were also presented.
Through information sharing and discussion the workshop provided a platform to better understand the fundamental issues that underpin current and future management arrangements for this valuable resource. Both commercial …
Distribution Of Foraging Shearwaters Relative To Inner Front Of Se Bering Sea, J. Jahncke, K. O. Coyle, Stephan I. Zeeman, N. B. Kachel, G. L. Hunt Jr.
Distribution Of Foraging Shearwaters Relative To Inner Front Of Se Bering Sea, J. Jahncke, K. O. Coyle, Stephan I. Zeeman, N. B. Kachel, G. L. Hunt Jr.
Marine Sciences Faculty Publications
We examined the hypothesis that short-tailed shearwaters Puffinus tenuirostris aggregate to forage at the inner front of the SE Bering Sea because of enhanced production there. We tested this hypothesis by comparing primary production, the distribution of euphausiids and the distribution of shearwaters relative to the front during late spring and late summer/early fall of 1997, 1998 and 1999. We found enhanced primary production at the front and offshore of the front during summer but not during spring. Primary production varied between seasons and years. Major differences were related to anomalous conditions in 1997 and 1998. The density of euphausiids …
Development Of Nicarbazin As A Reproductive Inhibitor For Resident Canada Geese, Kimberly S. Bynum, Christi A. Yonder, John D. Eisemann, John J. Johnston, Lowell A. Miller
Development Of Nicarbazin As A Reproductive Inhibitor For Resident Canada Geese, Kimberly S. Bynum, Christi A. Yonder, John D. Eisemann, John J. Johnston, Lowell A. Miller
Wildlife Damage Management Conference
Expanding populations of resident Canada geese that remain in suburban and urban areas year-round often result in increased conflicts with humans. Non-lethal and humane means are needed for managing the size of Canada goose flocks residing near or on airports, golf courses, industrial parks, government sites, and city parks. A side effect of nicarbazin, a veterinary drug used to control coccidiosis in chickens, is decreased egg production and hatching. Exploiting this side effect, studies of nicarbazin for reducing the hatchability of eggs from Canada geese were conducted. An initial study in Cotumix quail verified reduction in hatchability in a species …
Fisheries Research Contract Report No. 3 - Early Life History Of Abalone (Haliotis Rubra, H. Laevigata): Settlement, Survival And Early Growth. Final Report For Frdc Project 1998/306, Dr Sabine Daume
Fisheries Research Contract Reports
Australian abalone fisheries produce a high value, export-orientated products that provided 60% of the world supply in 1994 (Fleming, 2000). With wild abalone fisheries declining in countries worldwide, the interest in aquaculture products has increased substantially. The world production of abalone from aquaculture in 1999 was approximately 7,775 tonnes with only 89 tonnes (ca. 1%) being produced in Australia (Fleming, 2000). Abalone farming is expected to develop into a major industry and is a significant investment opportunity (McNamara, Victorian Aquaculture Strategy, May 1997). Future production from the numerous farms and sites either established, under construction or approved in Australia, could …
Physiological Importance Of 1,25(Oh)2D3 Membrane-Initiated And Nuclear Actions In Chickens As A Function Of Growth, And Maturation In Male And Female Chickens, Birgitta Larsson
Physiological Importance Of 1,25(Oh)2D3 Membrane-Initiated And Nuclear Actions In Chickens As A Function Of Growth, And Maturation In Male And Female Chickens, Birgitta Larsson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
It is well established that l,25(OH)2D3 is a major regulator of calcium homeostasis. The steroid exerts its effects on its target organs by two mechanisms, a slow mechanism mediated by nuclear vitamin D receptors (nVDR), and a rapid mechanism mediated by the l,25(OH)2D3 membrane-associated rapid response steroid binding protein (l,25D3-MARRS bp). In this dissertation, the physiological relevance of membrane initiated steroid signaling was investigated by studying the correlation of age in male and female chickens with the magnitude of responses to l,25(OH)2D3 in duodena from 7-, 14-, 28-, and …
Fisheries Research Report No. 134, Volume 2 - Towards An Assessment Of The Natural And Human Use Impacts On The Marine Environment Of The Abrolhos Islands, C F. Chubb, F J. Webster, C J. Dibden
Fisheries Research Report No. 134, Volume 2 - Towards An Assessment Of The Natural And Human Use Impacts On The Marine Environment Of The Abrolhos Islands, C F. Chubb, F J. Webster, C J. Dibden
Fisheries Research Reports
These proceedings form the second of two public documents resulting from the project “Towards an assessment of the natural and human use impacts on the marine environment” funded by the Fisheries Research and Development Corporation (project no. 2000/166). Volume 1, a summary of existing information and assessment of current levels of human use, was presented at a Public Forum in Geraldton on July 11, 2001.
A two-day workshop was held immediately after the forum and was attended by invited representatives from professional fishing and recreational groups together with research and management experts. The issues identified in Volume 1, and those …
Reproductive Allocation And Survival In Grasshoppers: Effects Of Resource Availability, Grasshopper Density, And Parasitism, David Heath Branson
Reproductive Allocation And Survival In Grasshoppers: Effects Of Resource Availability, Grasshopper Density, And Parasitism, David Heath Branson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A major challenge in ecology is to understand intraspecific variation in life histories. Variation in resource availability can lead to differences in reproductive allocation and life histories. Grasshoppers are a good organism for the study of variation in life histories, since they exhibit life history plasticity in response to biotic and environmental factors. An optimality model for grasshoppers was developed that predicts optimal total allocation to reproduction and optimal effort-per-offspring as functions of resource availability and mortality. Relative allocation to reproduction is predicted to increase with resource availability, while relative allocation to survival declines. A resource-based trade-off between egg size …
Fish & Wildlife News: November/December 2000
Fish & Wildlife News: November/December 2000
Fish and Wildlife News
Contents:
Jones Named Deputy Director 2
New Guidelines Announced for Federal Aid 3
Landmark Legislation for Refuge System 4
Maine Salmon Given ESA Protection 7
Service a Presence in Fisheries Society 11
Information Portal Makes Life Easy 13
Region 5 Invests in People 15
New Refuge Dedicated in Montana 16
U.S. and Russia Sign Polar Bear Treaty 18
Fighting the War on Weeds 22
Mexican Students Flock to Alaska 28
Fish and Wildlife...In Brief 35