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1981

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Articles 1 - 30 of 492

Full-Text Articles in Life Sciences

Distribution And Taxonomic Status Of Blarina Hylophaga Elliot (Insectivora: Soricidae), Sarah B. George, Jerry R. Choate, Hugh H. Genoways Dec 1981

Distribution And Taxonomic Status Of Blarina Hylophaga Elliot (Insectivora: Soricidae), Sarah B. George, Jerry R. Choate, Hugh H. Genoways

Mammalogy Papers: University of Nebraska State Museum

Systematic relationships of southern populations of short-tailed shrews (genus Blarina) are assessed on the basis of univariate and multivariate statistics. Populations are separated into two phena; southwestern short-tailed shrews are significantly larger morphometrically than southeastern forms. The two phena apparently represent distinct species. The name Blarina hylophaga is available for southwestern populations, and the name Blarina carolinensis is here restricted to short-tailed shrews in the southeastern United States.


Systematic Review Of The Texas Pocket Gopher, Geomys Personatus (Mammalia: Rodentia), Stephen L. Williams, Hugh H. Genoways Dec 1981

Systematic Review Of The Texas Pocket Gopher, Geomys Personatus (Mammalia: Rodentia), Stephen L. Williams, Hugh H. Genoways

Mammalogy Papers: University of Nebraska State Museum

The Texas pocket gopher (Geomys personarus), which occupies a range in southern Texas and extreme northeastern Tamaulipas, was examined for morphological variation. Univariate and multivariate analyses were used to determine age, secondary sexual, individual, and geographic variation. Significant differences were found among the three age classes and between the sexes for 12 of 13 cranial measurements. Males displayed higher individual variation than females. Distributions of the six previously recognized subspecies (fallax, fuscus, maritimus, megapotamus, personatus, and streckeri) were examined. An additional subspecies is recognized and described. Of the seven subspecies of G. personatus, fuscus and streckeri form a group distinct ...


Intraisland And Interisland Variation In Antillean Populations Of Molossus Molossus (Mammalia: Molossidae), Hugh H. Genoways, Robert C. Dowler, Catherine H. Carter Dec 1981

Intraisland And Interisland Variation In Antillean Populations Of Molossus Molossus (Mammalia: Molossidae), Hugh H. Genoways, Robert C. Dowler, Catherine H. Carter

Mammalogy Papers: University of Nebraska State Museum

Significant levels of secondary sexual variation and expected levels of individual variation were demonstrated in all samples of Molossus molossus from Jamaica, Guadeloupe, and Trinidad examined with univariate analyses. Significant morphometric differences were demonstrated among samples of Molossus molossus that originated from geographically close localities on the same island. Using multivariate techniques, broader patterns of geographic variation were demonstrated among the Antillean populations of M. molossus.


Northeast Research Station Watertown, South Dakota Annual Progress Report, 1981, Agricultural Experiment Station, Plant Science Department Dec 1981

Northeast Research Station Watertown, South Dakota Annual Progress Report, 1981, Agricultural Experiment Station, Plant Science Department

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1981 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 Agronomy and Plant Pathology Department. This report includes information on the 1981 crop season, soybean variety and populations study, forage production, date planning of various crops, sunflow trials, chemical control of stalk-boring insects in sunflowers, grain variety trials, rainfall studies in sunflowers.


The Backus Patent Tong And Its Potential For Harvesting Oysters Commercially, James P. Whitcomb Dec 1981

The Backus Patent Tong And Its Potential For Harvesting Oysters Commercially, James P. Whitcomb

Reports

No abstract provided.


Whole Issue Nebraska Bird Review (December 1981) 49(4) Dec 1981

Whole Issue Nebraska Bird Review (December 1981) 49(4)

Nebraska Bird Review

Index of Volume 49

Raptor Rehabilitation - A Positive Conservation Approach ....................58

Additional Spring Migration Reports ....................64

Book Reviews ....................65

1981 Fall Field Day ....................65

Notes ....................66

Index of Volume 49 ....................66


1981 Fall Field Day Dec 1981

1981 Fall Field Day

Nebraska Bird Review

About forty people participated in the 1981 Fall Field Day, which was scheduled from noon Saturday 3 October to noon Sunday 4 October, but which was anticipated by early arrivals Friday and on Saturday morning. The weather was windy and cool, the skies overcast much of the time, with some rain Saturday afternoon, and Sunday morning overcast so that it was hard to get colors. But almost as soon as the meeting broke up Sunday noon the sky cleared and everybody went home in bright sunshine. There was a slide show Saturday night. Of the reports on unusual species, submitted ...


Index Of Volume 49 Dec 1981

Index Of Volume 49

Nebraska Bird Review

Index of Volume 49

A-Z

Alexander, George and Irene 6
Alfred, Norris 24, 30
Avocet, American 8, 10, 44, 64
Ball, David 7
Bamberger, Mary 17
Bandy, Molly 17
Banghart, Mrs. Harry 7, 19(3), 43
Bassett. Mrs. Oona 18, 64
Bedell, Paul 6, 39, 41(2)
Bellinghiere, Stephen 7
Benedict, Russell 7
Bennett, Dr. Esther V. 26
1980 Nebraska Nesting Survey Bigelow, Lucile 7
Bittern, American 15, 38 Least 38,41

...

Yellowlegs, Greater 17, 18, 29, 40, 43
Lesser 18, 18-19, 29, 43 sp. 18, 41

Yellowthroat, Common 53, 64

Young, Joe 6

Zeillemaker, C. Fred 40, 43
Melly ...


Agricultural Experiment Station News December 1981 Dec 1981

Agricultural Experiment Station News December 1981

Agricultural Research Division News & Annual Reports

CONTENTS:
From the Director's Desk
Comprehensive Reviews
Progress Report - Format for Experiment Station Projects
Summer Faculty Fellowship Program Suspended
Season's Best Wishes
Federal Budget Update
Sahs Sel
Grants and Contracts
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - November 1981
Journal Abstracts - Submitted for Publication


The 1981 Iowa Corn Yield Test Report, District 3, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 3, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


The 1981 Iowa Corn Yield Test Report, District 6, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 6, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


The 1981 Iowa Corn Yield Test Report, District 2, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 2, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


The 1981 Iowa Corn Yield Test Report, District 1, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 1, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


The 1981 Iowa Corn Yield Test Report, District 5, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 5, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


The 1981 Iowa Corn Yield Test Report, District 4, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 4, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


The 1981 Iowa Corn Yield Test Report, District 7, K. E. Ziegler, A. R. Campbell Dec 1981

The 1981 Iowa Corn Yield Test Report, District 7, K. E. Ziegler, A. R. Campbell

Iowa Corn Yield Tests

Results of the Iowa Com Yield Test are published to aid Iowa farmers in selecting com varieties. This is the sixty-second consecutive year for the test.


Masthead From Nebraska Bird Review (December 1981) 49(4). Dec 1981

Masthead From Nebraska Bird Review (December 1981) 49(4).

Nebraska Bird Review

Published quarterly in March, June, September, and December by the Nebraska Ornithologists' Union, Inc. as its official journal and sent free to all members who are not in arrears for dues. Subscriptions (on a calendar year basis only) are $6.00 per year in the United States and $7.00 per year in all other countries, payable in advance. Single numbers are $1.75 each, postpaid.

Memberships (on a calendar year basis only): Student, $3.00; Active, $7.00; Sustaining, $15.00; Family Active, $10.00; Family Sustaining, $20.00; Life, $100.00.

All dues and subscriptions should be remitted ...


Additional Spring Migration Report Dec 1981

Additional Spring Migration Report

Nebraska Bird Review

The McPherson County report, Mrs. Oona Basset, Tryon, reporter, was received too late to be included in the regular tabulation (NBR 49:38). Mrs. Bassett returned to the ranch 21 May, so that winter birds and early migrants are not included. The 54 species are: Grebe, Horned Je 14-30, Eared My 22 -S, Western Je 14; White Pelican My 24 -S, Great Blue Heron My 27 -S, Mallard Je 1 -S, Pintail Je 1 -S, Blue-winged Teal Je 24 -S, Northern Shoveler My 27 -S, Redhead Je 1, Canvasback Je 1, Ruddy Duck My 22 ·S, Swainson's Hawk My ...


Notes- Nebraska Bird Review (December 1981), Iola Pennington, Harold Turner, Gary Lingle, J.C.W. Bliese, Ross Lock Dec 1981

Notes- Nebraska Bird Review (December 1981), Iola Pennington, Harold Turner, Gary Lingle, J.C.W. Bliese, Ross Lock

Nebraska Bird Review

DIXON COUNTY. In mid-March 1981 there were thousands of Snow Geese on the Missouri near Ponca, also Canadas, and we saw 6 White-fronteds up close in a plowed field. We also saw lots of ducks: Pintails, Ring-necks, Redheads, Mallards, and others. We saw Field Sparrows, and in town White-breasted Nuthatches, Robins, and Starlings were everywhere.

-Iola Pennington, Wauneta, NE 69045

GREATER PRAIRIE CHICKEN. On 12 December 1980 I flushed a Greater Prairie Chicken. I could clearly see the black band across the tail, indicating a male. A short time afterwards I was visiting at my brother's place, and they ...


Book Review- Nebraska Bird Review (December 1981) Dec 1981

Book Review- Nebraska Bird Review (December 1981)

Nebraska Bird Review

Birds - Their Latin Names Explained, A.F. Gotch, 348 pp., 5½; x 8½;, Blandford Press, England, Sterling Publishing Co., Inc., New York. Hardbound, indexed, $22.50.

"The first five chapters of the book explain the system of classification started by the Swedish naturalist Carl von Linné during the eighteenth century, and which became known as the Binominal System. Chapter 6 then sets out this system with reference to the Class Aves the birds - and each of the following chapters is devoted to one of the 27 Orders of birds." In these last chapters the author gives the Order, Family, and ...


Evaluation Of S-734 And Bas 9052 For Control Of Johnsongrass (Sorghum Halepense) In Soybeans (Glycine Max), Julio Beingolea Ochoa Dec 1981

Evaluation Of S-734 And Bas 9052 For Control Of Johnsongrass (Sorghum Halepense) In Soybeans (Glycine Max), Julio Beingolea Ochoa

Masters Theses & Specialist Projects

Johnsongrass is one of the more limiting factors in soybean production and is the most serious weed problem in the Southeastern United States. Actually, different herbicides are used in johnsongrass control, and still there are new herbicides which are being tested. Two experimental herbicides for johnsongrass control in soybeans are BAS 9052 and S-734.

The experiments were conducted in 1980 and 1981 with the objective to evaluate the effectiveness of S-734 alone and in combination with mefluidide and BAS 9052, BAS 9052 applied early or late postemergence, trifluralin, alachlor, and fluchloralin for seedling and rhizome johnsongrass control.

In both areas ...


Small Mammals In Openings In Virginia's Dismal Swamp, Robert K. Rose Dec 1981

Small Mammals In Openings In Virginia's Dismal Swamp, Robert K. Rose

Biological Sciences Faculty Publications

In a study of small mammals of openings in the Dismal Swamp of Virginia, seven species were obtained using pitfall traps. Samples included several species rarely caught in the Swamp - seven specimens of the Dismal Swamp subspecies of the southern bog lemming, Synaptomys cooperi helaletes, the first collected in this century; two least shrews, Cryptotis parva; and 15 southeastern shrews, Sorex longirostris fisheri . Results are compared to previous studies, conducted primarily in forested habitats, in which the white-footed mouse, Peromyscus leucopus, and the golden mouse, Ochrotomys nuttalli, were numerically dominant.


West River Agricultural Research And Extension Center Progress Report, 1981, Agricultural Experiment Station Dec 1981

West River Agricultural Research And Extension Center Progress Report, 1981, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This is the 1981 annual progress report of the West River Crops Soils Research and Extension Center, South Dakota Agricultural Experiment Station. This report includes: a weather summary, small grain variety trials, sorghum variety testing, management, tillage and cultural practices, and information on developing a system of chemical aid fallow.


Southeast South Dakota Experiment Farm Annual Progress Report, 1981, Agricultural Experiment Station Dec 1981

Southeast South Dakota Experiment Farm Annual Progress Report, 1981, Agricultural Experiment Station

Agricultural Experiment Station and Research Farm Annual Reports

This twenty-first 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, crop rotation, sorghum, small grains, and pest control.


Sand Clearance By The Surf Clam, Spisula Solidissima: A Preliminary Investigation, John N. Kraeuter Dec 1981

Sand Clearance By The Surf Clam, Spisula Solidissima: A Preliminary Investigation, John N. Kraeuter

Reports

No abstract provided.


An X-Y-Plotter-Based Technique For Measuring Root Length, Wallace Wilhelm, J. M. Norman, J. R. Ellis, R. L. Newell Nov 1981

An X-Y-Plotter-Based Technique For Measuring Root Length, Wallace Wilhelm, J. M. Norman, J. R. Ellis, R. L. Newell

Publications from USDA-ARS / UNL Faculty

Several automated systems have bee reported which use modifications of the line-intersect method to accurately estimate root length; however, most of these systems are relatively expensive to construct. The system described here employs an X-Y plotter, a 2 x 2 slide projector, and a fiber optic photodiode to determine intersections between projected images of a root system and grid pattern traced by the light sensor, which is mounted in the pen of the X-Y plotter. With adequate shielding to eliminate false counts, the system reproduced manual counts (r2=0.9999) for white sewing thread, carpet thread, and 0.14-mm-diam ...


Influence Of Crop Residue Removal On Yields Of Corn, Sorghum, And Soybeans With No Tillage, J. W. Doran Nov 1981

Influence Of Crop Residue Removal On Yields Of Corn, Sorghum, And Soybeans With No Tillage, J. W. Doran

Publications from USDA-ARS / UNL Faculty

For 3 years, yields were significantly influenced by amount of crop residue on the soil surface. Where surface crop residues were completely removed, average yields of corn, sorghum, and soybeans were 24, 6, and 27% lower than where residues were not removed. Removal of 50% surface crop residues had little or no effect on yields. Yield reductions were directly related to higher soil and plant canopy temperatures and lower soil water contents where surface crop residues were removed.


Electrophoretic And Immunological Studies On The Relationship Of The Brachyphyllinae And The Glossophaginae, Robert J. Baker, Rodney L. Honeycutt, Michael L. Arnold, Vincent M. Sarich, Hugh H. Genoways Nov 1981

Electrophoretic And Immunological Studies On The Relationship Of The Brachyphyllinae And The Glossophaginae, Robert J. Baker, Rodney L. Honeycutt, Michael L. Arnold, Vincent M. Sarich, Hugh H. Genoways

Mammalogy Papers: University of Nebraska State Museum

Electrophoretic and albumin immunological data indicate that the Brachyphyllinae as currently conceived is a natural assemblage, with Erophylla sezekorni and Phyllonycteris aphylla being more closely related to each other than either is to Brachyphylla cavernarum. In both data sets, values that distinguish Erophylla from Phyllonycteris are in the general range of values that characterize congeneric species of mammals. Immunological distance values for the species Glossophaga soricina, Monophyllus redmani, Anoura caudifer, Leptonycteris sanborni, Choeroniscus minor, and Hylonycteris underuoodi indicate that these taxa are approximately equidistant from the Brachyphyllinae. Immunological comparisons of Glossophaga and Monophyllus to Anoura, Leptonycteris, Choeroniscus, and Hylonycteris indicate ...


Social, Spacing, And Cooperative Behavior Of The Collared Peccary, Tayassu Tajacu, John A. Byers, Marc Bekoff Nov 1981

Social, Spacing, And Cooperative Behavior Of The Collared Peccary, Tayassu Tajacu, John A. Byers, Marc Bekoff

Ethology Collection

Social behavior of the collared peccary was studied on the lower, eastern slopes of the Mazatzal Mountains, Arizona. The social unit in this species is a cohesive herd, in which small inter-individual distances are maintained. Two conspicuous acts, one olfactory and one auditory, functioned to maintain close spacing. Social interactions were brief but tended to synchronize the activities of animals and also to bring them closer together. Amicable and neutral actions occurred far more frequently than agonistic interactions. Most agonistic behavior did not involve physical contact. Cooperative nursing, predator defense, and feeding occurred; all adults were tolerant of young, and ...


Mid‐Level Intrusions At The Continental Shelf Edge, Christopher S. Welch Nov 1981

Mid‐Level Intrusions At The Continental Shelf Edge, Christopher S. Welch

VIMS Articles

Observations across the continental shelf offshore from New Jersey in late summer 1976 show an intrusion of saline water at the mid level of the water column across the shelf edge front, which appears in density only as an offshore thickening of the pycnocline. This internal density field produces horizontal pressure gradient forces within the pycnocline in the onshore direction. These forces, in the linearized equation of motion with a constant eddy viscosity, drive a circulation which resembles a double Ekman spiral for internal pressure vertical distributions which are thin with respect to the Ekman depth. For thick pressure distributions ...