Life Sciences Commons^™

Yellowtail Flounder (Limanda Ferruginea) Bycatch During The 1999 Commercial Sea Scallop Opening Of Georges Bank Area Ii, William D. Dupaul, David Rudders, Todd Gedamke

Reports

No abstract provided.

Red Drum Tag Return Data Overview Virginia Game Fish Tagging Program 1995-2000, Jon Lucy

Reports

No abstract provided.

Mammals Of Fort A. P. Hill, Caroline County, Virginia And Vicinity, A. Scott Bellows, Joseph C. Mitchell, John F. Pagels, Heather N. Mansfield

Virginia Journal of Science

Fort A.P. Hill (APH) is a 30,329 ha military training installation (U.S. Army) located in the upper Coastal Plain of Caroline County, Virginia. It was formed in 1941 and named in honor of Civil War Confederate Lt. General Ambrose Powell Hill. The current landscape includes a mosaic of habitats that range from old fields to hardwood forests. Forty species of mammals are known to exist on or near the installation. These include one marsupial, five insectivores, 9 chiropterans, one lagomorph, 12 rodents, 10 carnivores, and one cervid. We have studied many of the species on APH since 1997. In this …

Estimation Of Relative Abundance Of Recreationally Important Finfish In The Virginia Portion Of Chesapeake Bay, Patrick J. Geer, Herbert M. Austin

Reports

No abstract provided.

Managing Birds And Controlling Aircraft In The Kennedy Airport–Jamaica Bay Wildlife Refuge Complex: The Need For Hard Data And Soft Opinions, Kevin Brown, R. Michael Erwin, Milo E. Richmond, P A. Buckley, John Tanacredi Ph.D., Dave Avrin

Faculty Works: CERCOM

During the 1980s, the exponential growth of laughing gull (Larus atricilla) colonies, from 15 to about 7600 nests in 1990, in the Jamaica Bay Wildlife Refuge and a correlated increase in the bird-strike rate at nearby John F. Kennedy International Airport (New York City) led to a controversy between wildlife and airport managers over the elimination of the colonies. In this paper, we review data to evaluate if: (1) the colonies have increased the level of risk to the flying public; (2) on-colony population control would reduce the presence of gulls, and subsequently bird strikes, at the airport; …

Reducing Management Costs In Cranberry Production, Carolyn J. Demoranville

Cranberry Station Fact Sheets

No abstract provided.

Determining Differences In The Spatial Distribution Of Forest Structure On The Kaibab Plateau: Implications For Forest Management And The Northern Goshawk, Ryan S. Miller

Other Publications in Wildlife Management

The Kaibab Plateau, in North Central Arizona, has undergone extensive change in the last 100 years due to land management practices such as logging, road building, and fire suppression. The northern goshawk (Accipiter gentilis) has been a center of controversy, due to the potential effects of silvicultural practices on goshawk breeding habitat (Reynolds-1983, Bloom et al 1986, Kennedy 1989, Crocker-Bedford 1990). Current and past research efforts on the Kaibab Plateau have mapped Goshawk nesting territories and temporal change in nesting behavior and success. However, these research efforts have not determined how long-term spatial changes in land-use activities that have influenced …

The 2000 Virginia Beach Red, White, And Blue Fishing Tournament: Participants’ Characteristics, Attitudes, Expenditures, And Economic Impacts, Carol E. Thailing

Reports

No abstract provided.

Usefulness Of Subjective Ovine Milk Scores: I. Associations With Range Ewe Characteristics And Lamb Production, G. D. Snowder, A.D. Knight, L. Dale Van Vleck, C. M. Bromley, T. R. Kellom

Department of Animal Science: Faculty Publications

Range ewes are commonly evaluated for milking ability by producers to determine the ewe’s ability to rear lamb(s). The U.S. Sheep Experiment Station has subjectively scored (low, average, high) a ewe’s milking ability within 24 h of lambing for many years. The relationship of subjective milk scores with lamb production was investigated using lambing records of Columbia (n = 1,731), Polypay (n = 1,129), Rambouillet (n = 1,704), and Targhee (n = 1,638) ewes. The incidence of high milk scores increased from less than 10% at first parity to 29 to 40% at second and greater parities. At maturity, Columbia …

Crop Updates 2001 - Cereals, Ross Kingwell, Wal Anderson, Eddy Pol, Peter Burgess, Ashley Bacon, D. M. Bakker, G. J. Hamilton, D. Houlbrooke, C. Spann, M. A. Hamza, Paul Blackwell, M. D. A. Bolland, Maurice Black, R. F. Brennan, W. L. Crabtree, Bill Bowden, Chris Gazey, Rochelle Strahan, Bob Gilkes, Zed Rengel, Stephen Loss, Tim O'Dea, Patrick Gethin, Ryan Guthrie, Lisa Leaver, David Phelps, Darshan Sharma, Mohammad Amjad, Md Sanajahanh Miyan, James Fisher, Senthold Asseng, Bill Bowden, Michael Robertson, Glen Macdonald, Kevin Young, Blakely Paynter, Jatinderpal Bathal, Cameron Weeks, Kith Jayasena, Robert Loughman, Q. Knight, Dominie Wright, Nichole Burges, Lisa-Jane Blacklow, Rob Hulme, Rob Griffith, Jenny Hawkes, Roger Jones, Debbie Thackray, S. B. Sharma, S. Kelly, Peter Newman, Dave Nicholson, Harmohinder S. Dhammu, Terry Piper, Mario F. D'Antuono, Mehmet Cakir, Nick Galwey, David Poulsen, Garry Ablett, Reg Lance, Greg Platz, Joe Panozzo, Barbara Read, David Moody, Andy Barr, Peter Langridge, Tina Botwright, Tony Condon, Robin Wilson, Iain Barclay, Howard Carr, Greg Shea, Ian Foster, David Tennant

Crop Updates

This session covers forty two papers from different authors:

PLENARY

1. Planning your cropping program in season 2001, Dr Ross Kingwell, Agriculture Western Australia and University of Western Australia

WORKSHOP

2. Can we produce high yields without high inputs? Wal Anderson, Centre for Cropping Systems, Agriculture Western Australia

VARIETIES

3. Local and interstate wheat variety performance and $ return to WA growers, Eddy Pol, Peter Burgess and Ashley Bacon, Agritech Crop Research

CROP ESTABLISHMENT

4 Soil management of waterlogged soils, D.M. Bakker, G.J. Hamilton, D. Houlbrooke and C. Spann, Agriculture Western Australia

5. Effect of soil …

Increased Egg Conservation-Is It Essential For Recovery Of Whooping Cranes In The Aransasiwood Buffalo Population?, James C. Lewis

Proceedings of the North American Crane Workshop

The whooping crane (Grus americana) is in a race for survival against adversities (genetic, demographic, and environmental) that are only partially understood. There is increasing evidence of genetic problems (drift, inbreeding, and loss of heterozygosity) in the captive population that likely also exist in the wild Aransas-Wood Buffalo Population (A WP), a consequence of the 1940s population bottleneck. Small populations are vulnerable to extinction through catastrophic events and random changes in productivity or survival. Negative environmental effects faced by whooping cranes include upstream diversion which diminish freshwater (nutrient) inflow into Texas wintering habitats, and expanding human activities along …

Whooping Crane Egg Management: Options And Consequences, David H. Ellis, George F. Gee

Proceedings of the North American Crane Workshop

Eggs to build captive whooping crane (Grus americana) flocks and most eggs for reintroduction experiments have come from second viable eggs in 2-egg clutches in Canada. Four years ago, egg removal ceased. Based on reproductive rates for years when second eggs were removed and for years when eggs were not removed, we project numbers of young fledging in the wild and in captivity for the 2 most likely egg-management strategies. From existing data sets, we find that reproductive performance was, on average, better during the era of routine removal of the second viable eggs than when no manipulation …

The Forester's Dilemma : Paradoxes In The Criteria And Indicators For Sustainable Forestry, Theodore E. Howard

New Hampshire Agricultural Experiment Station Publications

Since sustainable forestry is a complex endeavor, paradoxes naturally exist in the certification criteria and indicators. There are different ways to establish the sustainability horizon and alternative harvest profiles that, although sustainable, may not meet specific criteria. The application of historic range of variation data and criteria must confront issues of time and spatial scales as well as how much human disturbance is natural. Defining “local” in the bioregional context is important for addressing socioeconomic criteria. The forester’s ability to deal with the self-contradictions in the criteria and indicators of sustainable forestry will improve with experience in the certification process.

Ec01-158 Integrating Management Objectives And Grazing Strategies On Semi-Arid Rangeland, Patrick E. Reece, Jerry D. Volesky, Walter H. Schacht

University of Nebraska-Lincoln Extension: Historical Materials

Rangelands account for about half of Nebraska's total land area or about 24 million acres. Much of these expansive natural resource areas are in the semi-arid climatic region of Nebraska where grazing management decisions have a profound effect on ranch survival.

The educational object of this circular is to explain management practices that optimize the sustainability of rangeland-based enterprises. Additionally a decision-support tool is provided for selecting grazing systems best suited to livestock production and natural resource management objectives.

Phragmites Australis: Ecology And Management In Virginia, Kirk J. Havens

Reports

No abstract provided.

Managing Minnesota's Recovered Wolves, L. David Mech

USGS Northern Prairie Wildlife Research Center

The Minnesota wolf (Canis lupus) population was estimated by the Minnesota Department of Natural Resources at 2,450 during winter 1997-1998 and had increased at an average annual rate of 4.5°% since winter 1988-1989. The population may be removed from the federal endangered species list by 2002, and management would then return to the state. A federal recovery team recommended a population goal of 1,250-1,400 wolves for Minnesota, with none in the agricultural region. A plan approved by the Minnesota legislature, however, continues the protection of wolves, except for pet and livestock depredation control, for at least 5 years …

G01-1433, Environmental Stresses And Tree Health, Jon S. Wilson, Mark O. Harrell

University of Nebraska-Lincoln Extension: Historical Materials

Environmental stresses cause many health problems in Nebraska trees. Hot and cold temperatures, drying winds, poor soil and root conditions and human activity can damage leaves, bark and roots, and can predispose trees to secondary insect and disease attack. Keeping a tree in good condition through proper maintenance can prevent many environmentally related health problems.

This NebGuide is intended to help tree owners identify tree health problems caused by environmental stresses and provide ways to prevent or reduce damage.

Summary Of Essential Fish Habitat Description And Identification For Federally Managed Species Inhabiting The Virginia Waters Of Chesapeake Bay 1988 - 1999, Patrick J. Geer

Reports

No abstract provided.