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The Challenge Of Producing Native Plants For The Intermountain Area, U.S. Forest Service

All U.S. Government Documents (Utah Regional Depository)

Germination of wildland seeds is often dependent on proper seed collection and storage. A systematic approach to germination testing will often pinpoint the type of dormancy of seeds in wildland species and lead to germination enhancement.

Report No 58 - 1982 - Review Of Rainfall And Wetlands In The South-West Of Western Australia, J. A.K. Lane, D. R. Munro

Fisheries Research Reports

An account is given of involved the biological principles in decisions concerning duck-shooting seasons in the south-west of western Australia.

Conditions for waterfowl during 1982 are described through the use of rainfall statistics and data obtained from the Department's wetland monitoring programme.

1982 was characterized by exceptionally high rainfall in January and well-below average from February to October.

1982 was the seventh consecutive year of below-average rainfall in all five Meteorological of the south-west. 1976 to 1982 has thus been the south-west's driest seven-year period for more than seventy years.

The record-breaking rains of January caused widespread flooding in the …

Effects Of Two Species Of Va Mycorrhizal Fungi On Drought Tolerance Of Winter Wheat, Michael F. Allen, Michael G. Boosalis

Department of Plant Pathology: Faculty Publications

Roots and soils from western Nebraska fields of native and planted grasslands, and winter wheat of varied fallow-wheat cultivation duration, were evaluated for vesicular-arbuscular (VA) mycorrhizal root infection and spore numbers and types. Increased cultivation decreased percentage mycorrhizal infection in wheat and reduced spore numbers of Glomus fasciculatus, the dominant VA mycorrhizal fungus in these soils. Spore numbers of other VA mycorrhizal fungi did not change significantly with cultivation although mean numbers of G. mosseae increased with continued wheat production. Water relations and growth were determined for greenhouse-grown non-mycorrhizal, G. fasciculatus-infected, and G. mosseae-infected wheat in wet …

Furunculosis And Other Diseases Caused By Aeromonas Salmonicida, G. L. Bullock, R. C. Cipriano, S. F. Snieszko

United States Fish and Wildlife Service: Publications

Aeromonas salmonicida is a gram-negative bacterium that usually produces a water-soluble brown pigment. It was first described by Emmerich and Weibel (1890) as the cause of salmonid furunculosis in Germany. Although the disease was first considered to be limited to salmonids, studies by the Furunculosis Committee (Mackie et al. 1930, 1933, 1935) showed that A. salmonicida also infected other fish species. Present indications are that A. salmonicida or its variants also produce other diseases, such as ulcerative disease of goldfish (Carassius auratus), erythrodermatitis of common carp (Cyprinus carpio), ulcer disease of trout, and systemic infections among …

Infectious Pancreatic Necrosis (Ipn) Of Salmonid Fishes, Phillip E. Mcallister

United States Fish and Wildlife Service: Publications

Infectious pancreatic necrosis (IPN) is a viral disease principally associated with salmonids, although IPN and lPN-like viruses have been isolated from various nonsa1rnonid fish and marine invertebrates. Acute infection occurs in 1- to 4-month-old salmonids and can result in cumulative mortality approaching 100%. In contrast, fish 6 months old or older can undergo subclinical or inapparent infection, but experience no significant mortality. Survivors of the disease can become lifelong carriers of the virus. Epizootics of IPN have been reported worldwide, and several virus serotypes are recognized. The disease known as IPN was probably first described by M'Gonigle (1941) as acute …

Zooplankton Population Structure In Three Reservoirs Near The Ouachita Mountain-Gulf Coastal Plain Interface, Stephen B. Smith, Thomas E. Moen

Journal of the Arkansas Academy of Science

No abstract provided.

Wood Anatomy Of Hydrophyllaceae. I. Eriodictyon, Sherwin Carlquist, Vincent M. Eckhart, David C. Michener

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

A Flora Of The Vernal Pools On The Santa Rosa Plateau, Riverside County, California, Earl W. Lathrop, Robert F. Thorne

Aliso: A Journal of Systematic and Floristic Botany

No abstract provided.

Ecology Of Skeleton Weed (Chondrilla Juncea) In Wa. Population Studies On Pennyroyal (Mentha Pulegium)., F D. Panetta

Experimental Summaries - Plant Research

The ecology of skeleton weed - Cunderdin, Tammin, Narembeen (2 sites), Chapman valley, Eradu, East Badgingarra, Moorine Rock. Fate of buried seeds: Chapman, Merredin, Esperance Research stations. Population studies on pennyroyal: Seed production - Denmark, Mount Barker, Frankland. Sizes of seed banks of pennyroyal in pasture and ruderal situations – Denmark, West Denmark, Karri Heights, Narrikup (1), Frankland River. Ruderal populations – Mt Barker (1), Frankland, William bay, East Denmark, Narrikup (2), Denbarker, Mt Barker (2). Seedling emergence and survival – Denmark, Mt Barker, Frankland. Genetic differences between populations.

Scientific Collecting In Caves, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Genetical, Morphological And Behavioral Studies On The Evolutionary Biology Of The Astyanax Species Complex Of Middle America, Aldemaro Romero Jr.

Publications and Research

No abstract provided.

Rationale And Suggestions For A Hemispheric Color-Marking Scheme For Shorebirds: A Way To Avoid Chaos, J. P. Myers, John L. Maron, Enrique Ortiz, Gonzalo Castro, Marshall Howe, R.I.G. Morrison, Brian A. Harrington

Biological Sciences Faculty Publications

No abstract provided.

Amount And Distribution Of Isozyme Variation In Ponderosa Pine From Eastern Montana, John Herbert Woods, G. M. Blake, Fred W. Allendorf

Biological Sciences Faculty Publications

Pinus ponderosa seeds from 50 trees in each of six small isolated stands located within a nine kilometer radius of Colstrip, Montana, were examined at 23 isozyme loci. Megagametophyte and embryo tissue from each seed were screened separately. Measures of genetic diversity showed no significant differences between male and female components within or between stands. The average proportion of heterozygous loci per embryo (H_e) was not significantly different between stands. For all stands combined, H_e was 0.012. Genotype proportions did not deviate from expected Hardy-Weinberg proportions.

Nearly 99 % of the genetic diversity resided within individual stands, …

Linkage Disequilibrium Generated By Selection Against Null Alleles At Duplicate Loci, Fred W. Allendorf

Biological Sciences Faculty Publications

No abstract provided.

Aquatic Insects Of Upper Three Runs Creek, Savannah River Plant, South Carolina. Part Ii: Diptera, John C. Morse, Jay W. Chapin, David D. Herlong, Ray S. Harvey

Publications

As discussed in detail in Part I of this series (Morse et al. 1980), aquatic insects were collected biweekly from six locations on Upper Three Runs Creek, Savannah River Plant near Aiken, South Carolina, from September 1976 through August 1977, using light traps and semi-quantitative benthic sampling methods. See part I (Morse et al. 1980) for site and habitat descriptions and for a discussion of the methods used. In that publication, faunistic results were provided for all insect taxa except Diptera and relative abundance data for all but Diptera and non-dryopoid Coleoptera.

Internal Filters : Prospects For Uv-Acclimation In Higher Plants, Martyn M. Caldwell, Ronald Robberecht, Stephan D. Flint

Green Canyon Environmental Research Area, Logan Utah

Wavelength-selective absorption of solar radiation within plant leaves allows penetration of visible radiation to the chloroplats, while removing much of the damaging ultraviolet-B radiation. Flavonoids are important in this wavelength-selective absorption. Induction of flavonoid synthesis by solar radiation, and specifically by UV-B radiation, is discussed as this relates to the potential acclimation of plants to enhanced solar UV-B radiation that would result from stratospheric ozone reduction.

The Effects Of Ultraviolet-B Radiation On Plant Competition In Terrestrial Ecosystems, Warren G. Gold, Martyn M. Caldwell

Green Canyon Environmental Research Area, Logan Utah

Evidence regarding the interaction of ultraviolet-B radiation and plant competition in terrestrial ecosystems is examined. The competitive interactions of some species pairs were affected even by ambient solar UV-B radiation when compared to control pairs grown without UV-B. Also, the total shoot biomass of these species pairs was depressed under ambient UV-B. Relatively large increases in UV-B radiation altered the competitive interactions of some species pairs grown in pots under field conditions, but did not affect the total shoot biomass production of those pairs. Recent field experiments have examined the competitive interactions of wheat and wild oat under a simulated …

Mixed-Hardwood Thinning Optimization, Steven H. Bullard

Faculty Publications

Upland hardwood forest types are .by far the most widespread in the United States. Stands of the oak-hickory forest type alone include 109 million acres, 23 percent of the Nation's commercial timberland (U.S. Forest Service 1982) . Many even-aged upland hardwood stands developed on nonindustrial private lands through hardwood invasion after pine stands were harvested. In 1973, half of the hardwood timber in the South was determined to be on upland sites which formerly supported pine stands (Murphy and Knight 1974). Many nonindustrial private landowners passively permit the biologically better adapted hardwoods to increase after the harvest of pines. These …

Soil Response To Clearcutting And Site Preparation In East Texas, J. J. Stransky, L. K. Halls, Kenneth G. Watterston

Faculty Publications

On an east Texas forest site, clearcutting and site preparation did not change the soil pH. Chopping and KG blading significantly reduced organic matter in the surface soil, while burning slightly increased it. Organic matter showed a positive and significant relationship to potassium, calcium and magnesium. All site treatments increased phosphorus and potassium, with the greatest increase on the burned plots. Calcium and magnesium contents also increased with burning but decreased with KG blading. Burning appeared better than the other treatments for maintaining or improving the soil nutrient regime. However, planted loblolly pine seedlings survived and grew best with mechanical …

Red-Cockaded Woodpecker Symposium Ii Proceedings, Richard N. Conner, James Kroll, Brian Locke

Faculty Publications

No abstract provided.

Morphometry Of Meat By Scanning Light Microscopy, H. J. Swatland

Food Structure

Morphometric data can be collected from meat by using a scanning stage and a photometer, both controlled by a microcomputer. The passive counting of connective tissue boundaries is g1ven as an example to show that enumerative data may be biassed by the ratio of the width of the subject of measurement to the projected diameter of the photometer aperture. In a second example, the scanning stage is actively directed by the observer and is used to map the radial distribution of succinate dehydrogenase (SOH) activity in different histochemical types of muscle fibers. This is accomplished by the arbitrary fitting by …

Field Spectroscopy In The Food Production Chain, E. J. Brach

Food Structure

This paper reviews the application of field spectroscopy in the food production chain, particularly how field spectroscopy aids research and production of agricultural crops , and helps to understand the process of converting these crops into food.

The review discusses the nondestructive application of field spectroscopy such as ultraviolet, reflective , visible, near infrared and fluorescence techniques using conventional or laser light sources, to determine qualitative and quantitative properties of agricultural crops and produce.

Field spectroscopy can provide data on soil constituents and moisture, crop maturity, crop vigor, crop health, variety, variety within crops , and protein and moisture content …

Cranes Of The World: Demoiselle Crane (Anthropoides Virgo), Paul A. Johnsgard

Cranes of the World by Paul A. Johnsgard

Other Vernacular Names:
None in General English use; Shuai-yu-hao (Chinese); Grue demoisella, Demoiselle de Numidae (French); Jungfernkranich (German); Karkarra (Hindi); Aneha-zuru (Japanese); Krasavka zhuravl (Russian); Grulla damisela, Grulla moruria (Spanish).

Range:
Bred at least formerly in northwestern Africa (Algeria, Tunisia, possibly northern Morocco); currently breeds in Europe from the southern IJkraine and the Crimea through southeastern Russia (north to the region of Volgograd and south to the steppes to the east of the lower Volga), eastward through the steppes of the Kirghiz, western Siberia, southern Minusinsk, and the Altai, Lake Baikal, and of southern Transbaikalia, to the steppes of northwestern …

Iowa Science Teacher Section Fall Conference, 1983, Iowa Academy Of Science

Iowa Academy of Science Documents

Contents:

--- Featured Speaker: Mike Lozano
--- Presidential Award in Science Teaching 1983: Karen Murphy; Carolyn Brockway
--- Sessions
--- Excellence in Science Teaching Awards, Fall 1983
--- Iowa Science Teachers Section Outstanding Service Award 1983: Carolyn Brockway
--- Governor's Science Medal, December 1983: Dr. Lois Tiffany
--- Iowa Academy of Science Officers

Cerebral Abscess And Cephenemyia Phobifer In A Mule Deer In Central Nebraska, Jerre L. Johnson, John B. Campbell, Alan R. Doster, George Nason, R. J. Cagne

West Central Research and Extension Center, North Platte

A wild yearling male mule deer (Odocoileus hemionus) from south central Nebraska was submitted to the University of Nebraska North Platte Station Diagnostic Laboratory with the history of severe depression, slight incoordination, and visual impairment. Gross examination revealed a large abcess involving approximately 65-75% of the cebral hemispheres of the brain and approximately bots in the retropharyngeal pouches.

The Foraging Behavior Of Lacewing Larvae On Vertical Rods, Alan B. Bond

Alan Bond Publications

The foraging behavior of lacewing larvae (Chrysopa carnea Stephens, Chrysopidae, Neuroptera) on vertical lucite rods was observed under a variety of experimental conditions to investigate the decision processes responsible for the distribution of foraging effort. Food deprivation increased the duration of searching on all parts of the rod, whereas contact with prey at the rod tip induced only a local enhancement of searching activity. Searching at the rod tip did not decline with repeated trials on the same rod, but the duration of searching on the rest of the rod was reduced, evidently reflecting recognition and avoidance of previously-searched …

Herbicide, Cereal, Wheat Tolerance. Weed, Melon, Paterson's Curse, Iceplant, Mesquite Cotton Bush Chemical Control, R Madin, A Lindsay

Experimental Summaries - Plant Research

Herbicide tolerance trials – Merredin, Wongan Hills, Mount Barker. Cereal (wheat) Tolerance to various herbicides - 83LG37. Tolerance of wheat varieties to phenoxy herbicides - 83MO42. Long-term weed control on railway track - 81PE12, 81MO41. Melon control herbicides for melon control - 84M08, 84M09. Control of Paterson's Curse in Pasture - 83SW1. Chemical Topping of Paterson's Curse. Control of Iceplant (Mesembryanthemum nodiflorum) in crop and pasture - 83SG20, 83SG21. Chemical Control of Mesquite (Prosopis juliflora) - 82PH1. Chemical Control and Biology of Narrow Leaf Cotton Bush (Gomphocarpus fructicosa).

Cranes Of The World: 5. Comparative Reproductive Biology, Paul A. Johnsgard

Cranes of the World by Paul A. Johnsgard

The reproductive biologies of cranes are surprisingly similar. All crane species are strictly monogamous, have long pair bonds and a prolonged period of juvenile dependency, and are highly territorial during the breeding season. All cranes also have an extremely limited reproductive potential, resulting from their deferred sexual maturity, low clutch size, and limited renesting tendencies following the loss of a clutch or hatched young.

Cranes Of The World: Crowned Crane (Balearica Pauonina), Paul A. Johnsgard

Cranes of the World by Paul A. Johnsgard

Other Vernacular Names:
Blue-necked or gray crowned crane (regulorum and gibbericeps), Black-necked or dark crowned crane (pavonina and ceciliae); Ma-hem (Afrikaan); Grue couronnee, Grue ronnee du Cap (French); Konigskranich (German); Minima kanmuri-zuru (Japanese); Makoka zhuravl (Russian); Grulla corona (Spanish); I-hem (Xhosa); U-Nohemu (Zulu).

Range:
Resident in open country over most of Africa south of the Sahara, excepting the Congo Basin and the driest portions of southwestern Africa.

Cranes Of The World: Whooping Crane (Grus Americana), Paul A. Johnsgard

Cranes of the World by Paul A. Johnsgard

Other Vernacular Names:
Whooper; Big white crane; Grue de Amerique, Grue blanche Americaine (French); Schreikranich, Trompeterkranich (German); Amerikanishiy krikpivy zhuravl (Russian); Grulla griteria, Grulla blanca (Spanish).

Range:
Breeds in Wood Buffalo National Park, Northwest Territories. Migratory, wintering at Aransas National Wildlife Refuge, coastal Texas. Formerly much more widespread, breeding south to North Dakota, Minnesota, Iowa, and Illinois, and reported from as far west as Utah, east to Cape May New Jersey, and south to coastal Louisiana. Birds hatched from eggs recently transported to Grays Lake, southeastern Idaho, have been reared by greater sandhill cranes and now winter with them in …