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Pqf News: Newsletter Of The Partridge, Quail, And Francolin Specialist Group 4 (1993), Iucn Species Survival Commission, Birdlife International, World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

In Focus: World Pheasant Association

Grant aid for researchers

Request for francolin samples

Quail hunting in Southern Africa

Progress report on the Action Plan

Perdix VI Proceedings

Diseases in captive populations of partridges in China

Around the regions: search for the Indian Mountain Quail requests for samples

Minutes of the last meeting

The next newsletter

Ph Homeostasis In Lactic Acid Bacteria, Robert W. Hutkins, Nancy L. Nannen

Department of Food Science and Technology: Faculty Publications

The ability of lactic acid bacteria to regulate their cytoplasmic or intracellular pH is one of the most important physiological requirements of the cells. Cells unable to maintain a near neutral intracellular pH during growth or storage at low extracellular pH may lose viability and cellular activity. Despite the importance of pH homeostasis in the lactic acid bacteria, however, an understanding of cytoplasmic pH regulation has only recently begun to emerge. This review describes the specific effects of low pH on lactic acid bacteria, reports recent research on the physiological role of intracellular pH as a regulator of various metabolic …

Effect Of Organic Matter Decomposition Level On Bacterial Species Diversity And Composition In Relationship To Pythium Damping-Off Severity, Michael J. Boehm, L.V. Mdden, H.A.J. Hoitink

Department of Plant Pathology: Faculty Publications

Rhizosphere bacteria were isolated from root tip segments of cucumber seedlings grown in a suppressive, slightly decomposed light-colored peat mix, a conducive, more decomposed dark-colored peat mix, and a suppressive dark peat mix amended with composted hardwood bark. The bacteria were identified by a gas chromatographic fatty acid methyl ester analysis. The total number of taxa recovered from a single root tip segment ranged from 9 to 18. No single taxon predominated on all root tip segments harvested from any of the mixes. The highest relative population density reached by a given taxon on any root tip segment was 45%. …

Pregnancy Prevention In Early Adolescence: A Developmental Perspective, Lisa J. Crockett, Joanne S. Chopak

Department of Psychology: Faculty Publications

Although there is widespread interest in preventing teenage pregnancy, few interventions have been directed toward young adolescents. In part this neglect is understandable because adolescents under age 15 account for only a small percentage of teenage pregnancies (Pittman & Adams, 1988). At the same time, the lack of attention to younger adolescents is unfortunate on several counts. First, an increasing number of young adolescents are at risk. Rates of sexual activity have been rising in this group (Hofferth, Kahn, & Baldwin, 1987) and, because young adolescents are typically not consistent or effective contraceptive users, an increasing number of girls are …

Proceedings Of The 6th International Grouse Symposium, David Jenkins

School of Natural Resources: Faculty Publications

Papers: Populations and habitats of snowshoe hares, Ruffed and Spruce Grouse in the southern boreal pine forest of Ontario • Populations of Capercaillie and Hazel Grouse in large natural and logged forests in northern Russia, 1950-1992 • Extrinsic factors influencing the population dynamics of Red Grouse • Hazel Grouse in the Bohemian Forest - results of a 20-year study • Studies of grouse in China • Seasonal movements by Hazel Grouse in south-central Sweden • Ecological and behavioural constraints on monogamy in the Willow Ptarmigan • Spatial distribution and habitat preference of male Capercaillie in the Pechora-Illych Nature Reserve in …

Center For Sustainable Agricultural Systems Newsletter, September/October 1993

Center for Sustainable Agricultural Systems: Newsletter (1993–2000)

Contents:

Target Price Effect on Sustainable Agriculture

Nebraskans Explore Diversity

CSU Professor Calls for Changes in Weed Science

New Course in Agroecology and Sustainable Development

National Poll on Farmers and the Environment

Ikerd to Speak on UNL Campus

Job Opportunities with Center for Rural Affairs

Marty Strange Comments on Sustainable Agriculture

Conklin Comments on Delaney Clause Repeal

New Director of Institute for Alternative Ag.'s Policy Studies Program

Worldwatch Says Food Supply Unable to Maintain Population

Senate Hearing on Sustainable Agriculture's Role in Rural Economic Development

Father’S Presence And Young Children’S Behavioral And Cognitive Adjustment, Lisa J. Crockett, David J. Eggebeen, Alan J. Hawkins

Department of Psychology: Faculty Publications

The impact of fathers on the development and well-being of their children has been the focus of much recent research and debate (e.g., Furstenberg, 1988; Hawkins & Eggebeen, 1991; Lamb, 1987). Traditionally, fathers have been assumed to play an important role in the socialization of their children and, consequently, father-absence has been hypothesized to result in a variety of cognitive and psychosocial vulnerabilities. The need to understand the influence of fathers becomes especially acute at a time when high rates of divorce and nonmarital childbearing lead to the prediction that the majority of children will experience some period of father-absence …

Migration And Dispersal Of Laughing Gulls In The United States, Jerrold L. Belant, Richard A. Dolbeer

United States Department of Agriculture Wildlife Services: Staff Publications

The 3662 recovery records for Laughing Gulls (Larus atriczlla) banded in North America from 1924 to 1991 were analyzed to determine migration and dispersal patterns for Northeast (Maine to Virginia) and Gulf Coast (west coast of Florida to Texas) populations. Autumn migration for Northeast Laughing Gulls was initiated in October. Northeast Laughing Gulls migrated greater distances and were recovered farther south during winter than Gulf Coast gulls. Significantly more Gulf Coast Laughing Gulls wintered along the Gulf Coast than did Northeast Laughing Gulls. In contrast, significantly more Northeast Laughing Gulls wintered in Central and South America. Adult Laughing Gulls returned …

Fifteen Years Of Colony Dynamics In Pogonomyrmex Occidentalis, The Western Harvester Ant, In Western Nebraska, Kathleen H. Keeler

School of Biological Sciences: Faculty Publications

Ecological communities respond to environ- mental changes as the individuals of the component species die and are replaced. Thus, pat- terns of population turnover form an important aspect of community processes. Much less is known about species of long-lived individuals than of short-lived ones (Likens, 1989).

Instantaneous observations of age structure can be used to infer long-term dynamics but not all species can be aged retrospectively. Inferring life- history dynamics from current populations requires assumptions that are hard to verify. Following marked colonies of long-lived species is slow but provides direct, non-inferential data on population dynamics, although those are specific …

Toward Conservation Of Midcontinental Shorebird Migrations, Susan K. Skagen, Fritz L. Knopf

United States Department of Agriculture Wildlife Services: Staff Publications

Shorebirds represent a highly diverse group of species, many of which experience tremendous energy demands associated with long-distance migratory flights. Transcontinental migrants are dependent upon dynamic freshwater wetlands for stopover resources essential for replenishment of lipid reserves and completion of migration. Patterns of shorebird migration across midcontinental wetlands were detected from migration reports to American Birds and information provided by U.S. Fish and Wildlife Service national wildlife refuges. Patterns in species composition and abundance varied geographically, emphasizing the uniqueness of different regions to migrating shorebirds. Smaller species and neotropical migrants moved primarily across the Great Plains, whereas larger species and …

Review Of Practical Taxonomic Computing By Richard J. Pankhurst (Cambridge University, 1991), Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Review of Practical Taxonomic Computing by Richard J. Pankhurst (Cambridge University, 1991).

The Prairie Naturalist Volume 25, No. 3 September 1993

The Prairie Naturalist

Paul B. Kannowski, Editor

Nikki R. Seabloom, Assistant Editor

Douglas H. Johnson, Book Review Editor

CONTENTS

AVAILABILITY OF EARTHWORMS AND SCARAB BEETLES TO SANDHILL CRANES IN NATIVE GRASSLANDS ALONG THE PLATTE RIVER ▪ C. A. Davis and P. A. Vohs

BLACK TERN COLONIZATION OF A RESTORED PRAIRIE WETLAND IN NORTHWESTERN MINNESOTA ▪ D. J. Delehanty and W. D. Svedarsky

MOUNTAIN PLOVER HABITAT SELECTION IN THE POWDER RIVER BASIN, WYOMING ▪ T. L. Parrish, S. R. Anderson, and W. F. Oelklaus

POST-HATCH BROOD AMALGAMATION IN LESSER SCAUP: FEMALE BEHAVIOR AND RETURN RATES AND DUCKLING SURVIVAL ▪ A. D. Afton

STATUS AND …

Preface To Biology Of The Heteromyidae, Hugh H. Genoways, James H. Brown

University of Nebraska State Museum: Mammalogy Papers

What is the family Heteromyidae? It is the group ofexclusively New World rodents that includes the kangaroo rats, pocket mice, and kangaroo mice ofthe desert, grasslands, and shrublands of western North America as well as the spiny and pouched rats of the subtropical shrublands and tropical deciduous and evergreen forests of North America, Central America, and northernmost South America. It is a large family, with six genera and 316 species.

"Taxonomy" From Biology Of The Heteroeromyidae, Daniel F. Williams, Hugh H. Genoways, Janet K. Braun

University of Nebraska State Museum: Mammalogy Papers

Herein the taxonomy of the family is reviewed and diagnoses of Recent species and accounts of all currently recognized Recent species and subspecies are provided. The objective is to present a current taxonomy for the family rather than a systematic review. Unfortunately, there have been no comprehensive reviews for most genera for 80 years or more and the current taxonomy of many species clearly is unsatisfactory, as is the understanding of the relationships between most of the described fossil and Recent taxa.

Animal Welfare And The Statistical Consultant, Richard M. Engeman, Stephen A. Shumake

United States Department of Agriculture Wildlife Services: Staff Publications

Animal welfare considerations and regulations serve to ensure that experimental animals are used wisely while minimizing stress. Substantial impacts on the use of animals in experiments have resulted, thereby increasing the challenges for designing studies and analyzing data to provide valid inferences. Statisticians should become more indispensable for involvement in study design (including Animal Care and Use Committees), application of appropriate analyses, prudent interpretation of results, and the development of new statistical techniques to meet these needs.

Proceedings Of The Workshop On Adaptation Of Plants To Soil Stresses, J.W. Maranville, V.C. Baligar, R.R. Duncan, J. M. Yohe

INTSORMIL Impacts and Bulletins

Sustainable production of food and forage with a focus on plant adaptation to stress environments will be a continued priority for developing countries in the future. Since many areas of the world which support substantial human populations are drought prone, such as the subsaharan African zone and others, the primary focus has been on drought. However, one of the greatest restraints to sustainability of agriculture worldwide is the lack of sufficient soil nutrients for crop growth, or other soil constraints such as acidity or salinity which hinder crop production substantially.

Optimizing soil fertility or amending acid and saline soils to …

The Probe, Issue 135 – August 1993

The Probe: Newsletter of the National Animal Damage Control Association

A Primer to Ingredients Used for Coyote Lures & Baits--Sherm Blom
Outbreak of Hantavirus Infection Still Under Investigation
Fur Institute of Canada Receives Renewed Government Support
IN MEMORIAM--Milt Caroline
New Live Trap Address Correction

Ard News August 1993

Agricultural Research Division: News and Annual Reports

CONTENTS:

FYI994 CSRS BUDGET OUTLOOK
WIDAMAN TRUST DISTINGUISHED GRADUATE ASSISTANT AWARD
ANNUAL REPORT FOR RESEARCH PROJECTS
FORMAT FOR QUALITY ASSURANCE PROJECT PLANS
UNIVERSITY OF NEBRASKA FOUNDATION AWARDS
ARD ADVISORY COUNCIL ELECTION RESULTS
NEW OR REVISED PROJECTS
HARDIN DISTINGUISHED GRADUATE FELLOWSHIP FOR 1993-1994
SUCCESS OF IANR FUNDING
PROPOSALS Submitted
GRANTS AND CONTRACTS RECEIVED JUNE AND JULY, 1993
GROWTH IN TOTAL FEDERAL ACADEMIC SUPPORT
PROJECTS FUNDED BY BOARDS

A Grain Agriculture Fashioned In Nature’S Image: The Work Of The Land Institute, Jon K. Piper

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Modern industrialized agriculture is based on monocultures of annual crops requiring massive levels of biocide, fertilizer, and fossil fuel inputs. This form of agriculture has led to soil erosion and chemical contamination of soil and ground water. The Land Institute is studying a new model for grain agriculture, based on the prairie ecosystem, involving diversified plantings of perennial seed crops. Species we have studied include eastern gamagrass, wildrye, Illinois bundle flower, wild senna, Maximilian sunflower, hybrid perennial sorghum, and hybrid perennial rye. The Land Institute s research program develops perennial polycultures based on basic questions concerning high seed yield, over …

Annual Index

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Annual Index

Review Of Battle Against Extinction: Native Fish Management In The American West By W. L. Minckley And James E. Deacon, John D. Lynch

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

If you enjoy the West or are interested in or angry about conservationists and conservation biology, this book is a must. The book consists of the papers presented at a conference celebrating the twentieth anniversary of the founding of the Desert Fishes Council and emphasizes fish conservation in the Colorado River and desert southwest. Before water development (and even now) the West was dry and the image of fishes living in the desert an impossible one. Nevertheless, across the spread of the West, one finds canyon-bound rivers, isolated lakes (some with interesting chemistries), wet meadows, and spring heads. In these …

The Conservation Reserve Program: Habitat For Grassland Birds, Douglas H. Johnson, Michael D. Schwartz

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

The Conservation Reserve Program (CRP) has effected major changes to the landscape, especially in the northern Great Plains. Breeding birds have responded dramatically to habitat changes by colonizing CRP fields, often in large numbers. The vegetation in most CRP fields consists of introduced grasses and legumes, along with a variety of weedy species. This paper describes the bird populations found during three years of surveys on more than 300 CRP fields in western Minnesota, North Dakota, South Dakota, and eastern Montana. We relate densities of selected species to geographic location, annual effects, conservation practice adopted, and vegetation features.

Review Of Birds In Kansas, Volume Ii By Max C. Thompson And Charles Ely. Lawrence, Thomas E. Labedz

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

It has been nearly 30 years since the last of several excellent compendia of Kansas birds was published. Birds in Kansas continues this tradition and raises it to a new level of excellence for Kansas. Readers expecting a Kansas version of Robert's The Birds of Minnesota will be disappointed, but very few others can complain.

Birds of Kansas, Volume II is the final volume and contains an explanation of species accounts and accounts for the passerines. Volume I, published in 1989, contains introductory, historical, and physiographical chapters, an explanation of the species accounts, and accounts for non-passerines.

Each species account …

Review Of Ecology And Conservation Of Neotropical Migrant Landbirds By John M. Hagan Iii And David W. Johnston, William Scharf

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

When I first began to notice changes in the numbers and bird species that I netted on the Great Lakes' islands in the 1970s, I had little comprehension of the extent to which global modifications already underway were driving the changes in bird populations. With this compendium based on a symposium hosted by Manomet Bird Observatory in December, 1989, ornithologists can now substantiate the validity and seriousness of such earlier observations. The erosion of Neotropical bird populations is only one of many symptoms of planetary deterioration.

The Value On An Interdisciplinary Environmental Awareness: An Introduction, J. Allen Williams Jr.

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

This special issue of Great Plains Research brings together important and innovative environmentally-related research being conducted in what might be considered an "ecoregion," the Great Plains. Investigators from seven different disciplines explore topics that span the Great Plains from the southern border of Texas to the Canadian prairie provinces of Alberta and Manitoba. Their methods vary from highly focused experimental designs to broad-based policy analysis.

A review of the research topics covered in this issue might suggest they are as varied as the geographic locations, disciplinary affiliations, and methodological approaches of the researchers. In one sense, they are, but the …

Biological Control Of Weeds In Great Plains Rangelands, Svata M. Louda , Robert A. Masters

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Chemical control of weeds has increased agricultural productivity, but complete reliance on chemicals has serious drawbacks. These include high cost per acre, decreasing effectiveness, negative effects on plant community diversity, and increased opportunities for environmental contamination. One alternative is biocontrol, the use of biological factors that naturally limit weed populations. Long-term research goals focus on improving our knowledge of the processes that control and limit potential plant pests naturally and to use that knowledge to develop predictable, sustainable, low-cost, biologically-based weed management strategies. This paper reviews the ecological underpinnings of classical biological control of weeds, including basic research on the …

Table Of Contents - Volume 3, Number 2

Great Plains Research: A Journal of Natural and Social Sciences (through 2013)

Table of Contents

Wpa News 41 (1993), World Pheasant Association

Galliformes Specialist Group and Affiliated Societies: Newsletters

WPA News (August 1993), number 41

Published by the World Pheasant Association

Tillage And Cropping Practice Effects On Furrow Irrigation: Hydraulics And Macroporosity, Martin John Norton

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Furrow irrigation efficiency and performance is greatly influenced by advance time, infiltration and roughness. An experiment was conducted to determine tillage system and cropping system effects on those three variables. Four tillage systems, disk (D), chisel and disk (C), ridge till (RT), and slot plant (SP) were the treatments. They had been continuous for 17 years on a Hasting's silt loam (fine, montmorillonitic, mesic Udic Argistoll) soil. Subtreatments were a corn/soybean rotation (CS) and a continuous corn (CC) cropping system since 1984. A complete block split plot design was used. We measured inflow rate, advance time, runoff, and furrow geometry …

Flat Water Mammals, Patricia W. Freeman, Russell A. Benedict

University of Nebraska State Museum: Mammalogy Papers

Nebraska's diverse habitats are home for an equally diverse collection of mammals, some of which appear to be expanding their ranges as the habitat changes, especially along the Platte River Valley.