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Articles 331 - 339 of 339

Full-Text Articles in Life Sciences

Aspects Of The Life History Of Three Catostomids Native To The Upper Colorado River Basin, Charles W. Mcada May 1977

Aspects Of The Life History Of Three Catostomids Native To The Upper Colorado River Basin, Charles W. Mcada

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The distribution, abundance and life history were studied for three catostomids -- the razorback sucker (Xyrauchen texanus), the flannel-mouth sucker (Catostomus latipinnis), and the bluehead sucker (Catostomus discobolus) -- all native to the upper Colorado River basin. The razorback sucker has declined in abundance due to man's impact upon the system and it has been recommended that this species be listed as ''threatened" on the U. S. Department of the Interior's list of Threatened or Endangered species [Personal corrmunication, G. C. Kobetich, U. S. Fish and Wildlife Service, Las Vegas, Nevada]. During this investigation, …


Grindstone Flat And Big Flat Exclosures: A 41-Year Record Of Changes In Clearcut Aspen Communities, Walter F. Mueggler, D.L. Bartos Jan 1977

Grindstone Flat And Big Flat Exclosures: A 41-Year Record Of Changes In Clearcut Aspen Communities, Walter F. Mueggler, D.L. Bartos

Aspen Bibliography

No abstract provided.


Managing Aspen [Populus Tremuloides] For Wildlife In The Southwest, David R. Patton, John R. Jones Jan 1977

Managing Aspen [Populus Tremuloides] For Wildlife In The Southwest, David R. Patton, John R. Jones

Aspen Bibliography

No abstract provided.


Ec76-1741 Christmas Trees: A Management Guide, Donald E. Janssen, Neal E. Jennings Jan 1976

Ec76-1741 Christmas Trees: A Management Guide, Donald E. Janssen, Neal E. Jennings

University of Nebraska-Lincoln Extension: Historical Materials

In America the decorated Christmas tree has become an accepted tradition. Christmas would seem barren to most people without it. Raising Christmas trees is a growing industry and has proven to be a profitable use of land if high-quality, salable trees are produced.

Planting, managing, and harvesting Christmas trees is a high labor, high risk endeavor. Here is a list of questions. If you can answer "yes" to every one, you will be a successful Christmas tree grower.

Are you willing to plant trees every April?

Are you willing to shear or prune every tree, every year (mid-June to mid-July) …


The Ecological Role Of Fire In The Jackson Hole Area, Northwestern Wyoming, L.L. Loope, G.E. Gruell Jan 1973

The Ecological Role Of Fire In The Jackson Hole Area, Northwestern Wyoming, L.L. Loope, G.E. Gruell

Aspen Bibliography

No abstract provided.


Wildlife Hazards From 1080 Baiting, A R. Tomlinson, C. D. Gooding Jan 1971

Wildlife Hazards From 1080 Baiting, A R. Tomlinson, C. D. Gooding

Journal of the Department of Agriculture, Western Australia, Series 4

ONE-SHOT oat baiting with sodium fluoroacetate (1080) is a relatively safe method of trail baiting rabbits.

The hazard to wildlife is small and every effort is made to further reduce the hazard by selective application of the poison.


An Economic Analysis Of Range Improvements On Saddle Creek Allotment And Curlew National Grasslands--With Special Consideration On The Effects Of Improvements On Wildlife Management, Jerry Russell Meyers May 1970

An Economic Analysis Of Range Improvements On Saddle Creek Allotment And Curlew National Grasslands--With Special Consideration On The Effects Of Improvements On Wildlife Management, Jerry Russell Meyers

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Range improvements for livestock were analyzed for the Curlew National Grassland and Saddle Creek Allotment. Increases in aum's which were a result of range improvements were calculated and valued at $4.00 each. Internal rates of return for both study areas were computed with a 15-year project life span for estimated grazing capacity and permitted grazing. Rate of return was then set at 10 percent to calculate project life span for both permitted grazing and estimated grazing capacity for the two areas.

Effects of range improvements for livestock on wildlife habitat were studied. Due to a lack of quantitative data, values …


Aspen Grove Use By Deer, Elk, And Cattle In Southwestern Coniferous Forests, Hudson G. Reynolds Jan 1969

Aspen Grove Use By Deer, Elk, And Cattle In Southwestern Coniferous Forests, Hudson G. Reynolds

Aspen Bibliography

Aspen groves within mixed conifer forests produce more herbaceous understory than adjacent forest. Thinning aspen groves improves herbaceous understory and aspen regeneration. Higher deer and cattle use of aspen groves is associated with the greater abundance of understory vegetation.


Bulletin No. 14: Creating New Landscapes With Herbicides, A Homeowner's Guide, William A. Niering, Richard H. Goodwin Sep 1963

Bulletin No. 14: Creating New Landscapes With Herbicides, A Homeowner's Guide, William A. Niering, Richard H. Goodwin

Bulletins

A how-to-do-it handbook describing the formulations and techniques to be used in eliminating unwanted plants such as poison ivy. The use of herbicides in naturalistic landscaping, wildlife and woodlot management are included. [Addendum on new data on chemicals inserted 1970] 30 pp.