Life Sciences Commons^™

Long-Term Monitoring And Analyses Of Physical Factors Regulating Variability In Coastal Antarctic Phytoplankton Biomass, In Situ Productivity And Taxonomic Composition Over Subseasonal, Seasonal And Interannual Time Scales, Mark A. Moline, Barbara B. Prezelin

Biological Sciences

A 3 yr high-resolution temporal data base related to phytoplankton dynamics was collected during the austral spring/summer periods of 1991 to 1994 in shelf waters adjacent to Palmer Station, Antarctica. Here, the data base is used (1) to quantify the variability in phytoplankton biomass, in situ productivity and taxonomic composition over subseasonal, seasonal and interannual time scales; (2) to elucidate environmental mechanisms controlling these temporal patterns; and (3) to ascertain which phytoplankton markers are most suitable for detecting longer-term (i.e. decadal) trends in phytoplankton dynamics in coastal waters of the Southern Ocean. The Long-Term Ecological Research (LTER) coastal study sites …

Function Of Funnel-Shaped Coral Growth In A High-Sedimentation Environment, Bernhard Riegl, Carlton Heine, George M. Branch

Marine & Environmental Sciences Faculty Articles

Advantages and disadvantages of a funnel-shaped growth in 2 coral species (Acropora clathrata, Turbinaria peltata) in a high-sedimentation environment (Natal, South Africa) were observed in the field and modeled in a flow tank. Funnel-shaped growth serves different purposes in different hydrographic settings. In calm waters with little currents (in our case deep reef areas, 18 to 25 m) funnel-shaped colonies served as 'sacrificial sediment traps': all sediment trapped inside the funnel was directed towards the centre, where it was concentrated. There, tissues underwent necroses, but all other tissues remained sediment free and healthy. In areas with high currents (in our …

Eumops Perotis, Troy L. Best, W. Mark Kiser, Patricia W. Freeman

University of Nebraska State Museum: Mammalogy Papers

Eumops perotis is the largest bat in the United States. The greater mastiff bat resembles other North American free-tailed bats, but is distinguished from other molossids by its large size and lack of long guard hairs on the rump (Barbour and Davis, 1969). E. perotis has the thinnest dentary of any Eumops (Freeman, 1981a).In the United States, E. perotis can be separated from E. underwoodi by its larger size (forearm is 73-83 mm in E. perotis and 65-77 mm in E. underwoodi), darker color, and lack of long guard hairs on the rump. The ears are longer (36-47 mm …

External Morphology Of The Chorion Of The Annual Fishes Cynolebias (Cyprinodontiformes: Rivulidae), Marcelo Loureiro, Rafael O. De Sá

Biology Faculty Publications

Members of the family Rivulidae (killifishes) inhabit temporary bodies of freshwater in South and Central America (one species is also found in North America). The most remarkable characteristic of the family Rivulidae is that species have an annual life cycle with a drought-resistant egg during the dry season. Parenti's (1981) analysis of the order Cyprinodontiformes considered a single genus, Cynolebias, whereas Cos- ta's (1990) phylogenetic analysis of the family Rivulidae separates Cynolebias from Cynopoecilus. One of Costa's synapomorphies to separate Cynopoecilus is the unique structure of their egg's chorion, which is shared with Leptolebias and Campellolebias.

Hexapod Herald - Vol. 8, No. 16, December 19, 1996

Hexapod Herald and Other Entomology Department Newsletters

Grants

Departmental travelers

Announcements

Congratulations

Calendar of events

Publications

Deadlines

Office news

Cropwatch No. 96-26, Dec. 13, 1996, Lisa Brown Jasa

Crop Watch

Corn, soybean, sorghum crops weigh in with record harvests ..............175

Field drydown doesn't cause dry matter loss.............. 175

Briefs.............. 176

Seed supplies 'good' for '97 ..............177

Northeast Center nitrogen rate research shows little yield difference this year ..............178

Research jury still out on new product - Amisorb ..............179

Research shows little yield benefit, increased harvest loss from narrow row corn ..............179

Use winter to assess, plan, prepare equipment for planting ..............180

1996 CropWatch index ..............181

Fishery Independent Standing Stock Surveys Of Oyster Populations In Virginia 1996, Roger L. Mann, James Wesson

Reports

Extensive description of the Virginia oyster resource and history of its utilization has been given by Haven, Hargis and Kendall (1981), and more recently reviewed by Hargis and Haven (1988). These contributions, among many others, describe a state of continuing decline. The James River, Virginia has served as the focal point for the Virginia oyster industry for over a century, being the source of the majority of seed oysters that were transplanted for grow-out to locations within the Virginia portion of the Chesapeake Bay and much further afield in the Middle Atlantic states (Haven et al, 1981 ). The Rappahannock …

The Rna-Binding Site Of Bacteriophage Qβ Coat Protein, Francis Lim, Marc Spingola, David Peabody

Biology Department Faculty Works

The coat proteins of the RNA bacteriophages Qβ and MS2 are specific RNA binding proteins. Although they possess common tertiary structures, they bind different RNA stem loops and thus provide useful models of specific protein-RNA recognition. Although the RNA-binding site of MS2 coat protein has been extensively characterized previously, little is known about Qβ. Here we describe the isolation of mutants that define the RNA-binding site of Qβ coat protein, showing that, as with MS2, it resides on the surface of a large β-sheet. Mutations are also described that convert Qβ coat protein to the RNA binding specificity of MS2. …

Meeting Minutes, December 10th, 1996, National Smokejumper Association Executive Committee

National Smokejumper Association Meeting Minutes

Agenda: Minutes approved; Financial report given by Lowell Hanson; Income taxes be paid on Jack's stipend; Tax deferred expenses; Membership; Reunion 2000; Life Memberships; Other:; Smokejumper Video; Orders of caps, cups, etc.; NSA's ad in the National Wildfire magazine; Jack's stipend; Computer; Certificates of Appreciation; E-mail hookup; Donation to RSVP; Meeting adjourned;

Parasexuality And Heterokaryosis In Fusarium Oxysporum Forma Specialis Cubense, Blanca R. Cortes

FIU Electronic Theses and Dissertations

Intra and Inter Vegetative Compatibility Group (VCG) heterokaryon formation was observed in Fusariurn oxysporum f.sp. cubense (Foc). Using the double-pick method to force heterokaryon formation via hyphal anastomosis, 10⁴ pairwise combinations were done between 100 auxotrophic mutants of Foe representing races 1, 2 and 4 in five VCGs. Inter formae speciales heterokaryon formation was also observed on pairings between benomyl resistant Wild Type Testers (WTT) and wild type isolates in 15 VCGs and four different formae speciales. Microconidia analysis of heterokaryons identified both parental phenotypes as well as diploid phenotypes. Colonies with altered and hybrid genotypes were …

The Prairie Naturalist Volume 28, No. 4. December 1996

The Prairie Naturalist

IMPLANTED MICROCHIPS USED TO INDIVIDUALLY IDENTIFY BLACK-FOOTED FERRETS IN MONTANA ▪ R. Stoneberg

GRAY WOLF STATUS IN NORTH DAKOTA ▪ D. S Licht and L. E. Huffman

VARIATION IN SELECTION OF MICROHABITATS BY MERRIAM'S TURKEY BROOD HENS ▪ M. A. Rumble and S. H. Anderson

SURVIVAL AND REPRODUCTIVE CHRONOLOGY OF FEMALE RING-NECKED PHEASANTS IN SOUTH DAKOTA ▪ A. P. Leif

EFFECTS OF LOGGING SLASH ON ASPEN REGENERATION IN GRAZED CLEARCUTS ▪ M. A. Rumble, T. Pella, J. C. Sharps. A. V. Carter, and J. B. Parrish

BOOK REVIEWS

The Poetry of Ecoregions ▪ J. Pastor

Saving Texas' Rare Ones ▪ …

Micronutrients And The Risk Of Colorectal Adenomas, Marilyn Tseng, Sharon C. Murray, Lawrence L. Kupper, Robert S. Sandler

Kinesiology and Public Health

Recent studies suggest that micronutrients, especially folate, calcium, iron, and antioxidant vitamins, affect the risk of colorectal neoplasia. The objective of this case-control study was to examine the association between these micronutrients and the risk of colorectal adenomas. The study was based on 236 cases with adenomatous polyps or cancer and 409 controls, all colonoscopy patients at University of North Carolina Hospitals between July 1988 and March 1991. After colonoscopy, subjects were interviewed using a semi-quantitative food frequency questionnaire, and average daily nutrient intakes were calculated. Sex-specific odds ratios relative to the lowest quartile of intake for each micronutrient were …

Bulletin No. 35: Native Woody Plant Collection Checklist, Michael P. Harvey, Glenn D. Dreyer

Bulletins

No abstract provided.

Southeast South Dakota Experiment Farm Annual Progress Report, 1996, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This thirty-sixth annual report of the research program at the Southeast South Dakota Experiment Farm has special significance for those engaged in agriculture and the agriculturally related businesses in the nine county area of southeast South Dakota. Reports in this document include information on: temperatures and precipitation data, corn production and performance, soybean research and planting, soil testing, alfalfa yield test, fertilizer testing, herbicide research, crop rotation, sorghum, small grains, livestock research, and pest and weed control.

West River Ag Center Crops And Soils Research Annual Progress Report, 1996, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1996 progress report of the West River Crops and Soils Research Projects, South Dakota Agricultural Experiment Station. This document includes reports on: weather and climate, wheat and grain variety trials, management and tillage, and weed and pest control.

Northeast Research Station Watertown, South Dakota Annual Progress Report 1996, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1996 annual progress report for the Northeast Research Station in Watertown, South Dakota. This report is issued by the South Dakota Agricultural Experiment Station and the South Dakota State University Plant Science Department. This report includes weather data, yield comparisons, crop performance trials, corn trials, soybean trials, winter wheat performance testing, Barley Foliar information, weed and pest control, herbicide demonstrations, canola and flax variety trials and more.

Competitive Orientations And Motives Of Adult Sport And Exercise Participants, Diane L. Gill, Lavon Williams, Deborah A. Dowd, Christina M. Beaudoin, Jeffrey J. Martin

Kinesiology, Health and Sport Studies

Participants in four different adult sport and exercise programs (running club, exercise classes, cardiac rehabilitation program, senior games) completed measures of competitive orientation and participation motivation. Our samples were older and more diverse than samples of previous research, and their competitive orientations and motives were similarly diverse. Multivariate analyses revealed gender and sample differences. Males were higher than females on competitiveness and win orientation, and runners were less win-oriented than other groups, but overall, all groups were similar to previous college-age samples in competitive orientation. Groups varied on specific motives, with females rating fitness, flexibility, affiliation, and appearance higher than …

The Bradyrhizobium Japonicum Fega Gene Encodes An Iron-Regulated Outer Membrane Protein With Similarity To Hydroxamate-Type Siderophore Receptors., Kristin Levier, Mary Lou Guerinot

Dartmouth Scholarship

Iron is important in the symbiosis between soybean and its nitrogen-fixing endosymbiont Bradyrhizobium japonicum, yet little is known about rhizobial iron acquisition strategies. Analysis of outer membrane proteins (OMPs) from B. japonicum 61A152 identified three iron-regulated OMPs in the size range of several known receptors for Fe(III)-scavenging siderophores. One of the iron-regulated proteins, FegA, was purified and microsequenced, and a reverse genetics approach was used to clone a fegA-containing DNA fragment. Sequencing of this fragment revealed a single open reading frame of 750 amino acids. A putative N-terminal signal sequence of 14 amino acids which would result in a mature …

Biology: What One Needs To Know, Ursula Goodenough

Biology Faculty Publications & Presentations

Biology on this planet represents an astonishing experiment in carbon-based chemistry which, over billions of years, has generated billions of species adapted to countless major and minor fluctuations in ecological circumstances. In one sense there is no way to generalize about biology. While biological activities can all be ultimately explained by physical laws (like everything else in the universe), it is the emergent intensely particular properties of organisms that most interest us. This essay represents an attempt to describe some of the more prominent patterns that emerge from the sea of biological particularities, patterns that present many opportunities for religious …

Pseudoreplication Revisited, Robert A. Heffner, Mark J. Butler Iv, Colleen Keelan Reilly

Biological Sciences Faculty Publications

No abstract provided.

The Nebline, December 1996

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Contents:
Lancaster County Extension's Web Site on the Internet
Over the garden fence
Keep trees fresh
December garden hints
Cyclamen care
Protect gift plants
Nebraska Soybean Day and Machinery Expo
Agronomy Highlights 1996
Crop Protection Clinic
“Part-time Farming” video
"Returning to the Farm" dates set
Compost marketing
Environmentally friendly holidays
Snow science
Humidity in the home environment affects plants, too
Cybercase of the invisible itches
Bluff Road Landfill rates have increased, but are still low
Where wastes should go
Cut up the world
Biodegradable plastic from corn
earth wellness festival receives grant
1996 Safe Drinking
Water Act: will it affect …

Evagination Of The Thyroid Primordium Involves Novel Cell Behaviors, Gwendolyn M. Kinebrew, S. R. Hilfer

Biology

No abstract provided.

Whooping Crane Sightings, August-December 1996, Steven Anschutz

Nebraska Bird Review

Based on observations of the breeding grounds during the summer of 1996, about 170 Whooping Cranes were expected to arrive at the Aransas National Wildlife Refuge in Texas during the fall. The first arrival (two birds) was confirmed on 23 October. A total of 158 birds (143 adults/subadults and 15 young) were wintering at Aransas 1996-97. As of 16 January 1997, six adults and eight subadults, of the number anticipated, had not arrived at the refuge.

The first recorded dates for confirmed observations of migrating Whooping Cranes were 2 August in Canada and 22 September in the United States. The …

1995 (Seventh) Report Of The Nou Records Committee, Joseph A. Gubanyi

Nebraska Bird Review

The functions and methods of the NOU Records Committee are described in its bylaws (NOU Records Committee 1986). The committee's purpose is to provide a procedure for documenting unusual bird sightings and to establish a list of all documented birds for Nebraska. The official list of birds was last published in 1988 (NOU Records Committee 1988), and has been appended five times (Mollhoff 1989, Grenon 1990, 1991, Gubanyi 1996a, 1996b).

This report includes accounts submitted during the calendar year 1995 and covering records with accession numbers 396-450, 480-490. All records mentioned here will be available to interested persons at the …

Index From Nebraska Bird Review (December 1996)

Nebraska Bird Review

INDEX TO VOLUME 64

Alexander, George 25. 33. 34 Irene 25, 33, 34

Alfred, Norris 34 Allen, Betty 25, 82 Reid 25

Another Common Crane in Nebraska
with a Summary of North
American Records 80

....

Yellowlegs, Greater 50, 85, 94, 113
Lesser 50, 85, 94, 113

Yellowthroat, Common 63, 88, 101, 123

Zwink, Duane 24

Masthead And Table Of Contents From Nebraska Bird Review (December 1996) 64(4)

Nebraska Bird Review

Table of Contents

Fall Field Report, August-November 1996 ... 106

Observers for Fall Field Report ... 129

Whooping Crane Sightings, August-December 1996 ... 129

Notes on Bird Sightings in Nebraska ... 130

1995 (Seventh) Report of the NOU Records Committee ... 132

Book Review ... 138

Index to Volume 64 (compiled by R. G. Cortelyou) ... 139

"Book Review," From Nebraska Bird Review (December 1996) 64(4), Hazel Scheiber

Nebraska Bird Review

This book contains 18 essays based on observations Miss Sherman made on a farm in northeastern Iowa six miles west of the Mississippi River, near McGregor. The essays were given at meetings of scientific societies (she belonged to 15) or were published in their journals, and included such titles as "Feeding Winter Birds" and "Experiments in Feeding Hummingbirds During Seven Summers." She was recognized for her knowledge of birds, and her forceful and pungent wit.

Miss Sherman was born on the Iowa farm in 1853 and died there in 1943. She was an artist and teacher for the first 20 …

Fall Field Report, August-November 1996, W. Ross Silcock, Joel G. Jorgensen

Nebraska Bird Review

This fall we received numerous excellent reports from which to compile this summary. Most parts of the state are covered, except the southwest and north central, although many observers at least pass through those areas. A note about details on unusual observations. The new NOU Field Card, which can be ordered by sending a stamped, self-addressed envelope to the NOU Librarian, Univ of Nebraska State Museum, Lincoln, NE 68588-0514, indicates species that need complete documentations, mostly casual and accidental species. However, we realize that information about early and late migration dates, and rarity in the west or east is not …

An Analysis Of Two Tests For Diesel Contamination In The Environment When Considering The Impact On Hydrocarbon Degrading Bacteria, Chris Wedding

Mahurin Honors College Capstone Experience/Thesis Projects

No abstract provided.

Ard News December 1996

Agricultural Research Division: News and Annual Reports

CONTENTS:

SEASON'S GREETINGS
REVIEW PROCEDURES FOR NEW AND REVISED REGIONAL RESEARCH PROJECTS AND COMMITTEES
CROP DIAGNOSTIC CLINIC WELL-RECEIVED BY AGRIBUSINESS PROFESSIONALS
COMMUNITY GETS INVOLVED IN MANURE MANAGEMENT RESEARCH AT THE ARDC
RECOGNITION OF JUNIOR FACULTY FOR EXCELLENCE IN RESEARCH
LAYMAN AWARDS
NEW OR REVISED PROJECTS
INNOVATIVE AND HIGH RISK RESEARCH PROGRAM
PROPOSALS SUBMITTED FOR FEDERAL GRANTS
GRANTS AND CONTRACTS RECEIVED OCTOBER AND NOVEMBER, 1996