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Control Of Freshwater Fish With Chemicals, Robert E. Lennon

Vertebrate Pest Conference Proceedings: 4th (1970)

Fish toxicants have been used for nearly 60 years by sport fishery managers to remove predaceous or competing fishes from gamefish waters. The reclamation of lakes and streams by poisoning unwanted fish is considered to be one of the better management tools, and the demand for reclamations is increasing as more waters come under intensive management. Many chemicals have been tried as fish toxicants, but the insecticides rotenone and toxaphene have been most widely used despite their disadvantages of non-selectivity between wanted and unwanted fishes, persistence in water, and toxic effects on aquatic invertebrates. Research in the past 20 years …

Standardization Of Procedures For Developing Vertebrate Control Agents, Nelson B. Kverno

Vertebrate Pest Conference Proceedings: 4th (1970)

In research to develop methods for controlling damage by vertebrates, chemical evaluation procedures vary with every investigator, so that data cannot be meaningfully compared. Toxicology is one common area where standardization is both applicable and desirable. It is recommended that standard guidelines be developed through an international body recognized by the members of the discipline.

Rodent Control Problems In Developing Countries, Robert Z. Brown

Vertebrate Pest Conference Proceedings: 4th (1970)

None of the so-called developing countries has an adequate rodent control program at present. In only a few of these countries is any rodent control research occurring despite the fact that rodent problems are actually quite serious in many regions and potentially so in others. Expertise, techniques and materials from the developed countries are of limited usefulness because of major differences in rodent species involved, standards for food handling and sanitation, and in the cultural contexts in which rodent control must occur. Trained personnel, both for control work and the basic research needed, are in very short supply. In addition, …

The Outlook For Vertebrate Pest Control, Howard A. Merrill

Vertebrate Pest Conference Proceedings: 4th (1970)

Because of the increased concern for the environment and the public's positive action toward preservation of all forms of plant and animal life, future control methods for pest animals will require a greater degree of specificity than in the past. Vertebrate pest control does not face a very promising future unless the independent and cooperative effort of both industry and government is expanded. The time has passed when one could use a chemical simply because it was a good poison or repellent. Now, especially when food or feed crops are involved, it is necessary to know a lot more about …

The Pocatello Supply Depot, Adolph Zajanc

Vertebrate Pest Conference Proceedings: 4th (1970)

The Pocatello Supply Depot is operated by the Division of Wildlife Services, Bureau of Sport Fisheries and Wildlife, a branch of the U. S. Fish and Wildlife Service--all a part of the Department of Interior. The major purpose of the Supply Depot is to provide rodent and predator control materials not available to the general public, to cooperating Federal, State and private agencies. On occasion materials are also provided to Canada and to South American countries as well as other foreign countries after a review of justification by the Central Office.

Some Vertebrate Pest Problems In Japan, Tatsuo Udagawa

Vertebrate Pest Conference Proceedings: 4th (1970)

The wildlife in Japan does more damage in outbreaks in forestry than in agriculture. Hares annually damage in excess of 250 thousand acres. Voles annually damage 50 to 100 thousand acres; in some areas great damage may occur suddenly. The giant flying squirrel damages areas of replanted trees in southern areas of Japan. The Himalayan black bear strips the bark on tree trunks. In agriculture, the sparrow and the duck do an excessive amount of damage in rice fields, and the boar does conspicuous harm in the plowed fields of mountain villages. In Okinawa, sugar cane is attacked by Rattus …

The Role Of The Wildlife Refuge In Relief Of Vertebrate Pest Damage In Agriculture, John B. Cowan

Vertebrate Pest Conference Proceedings: 4th (1970)

Wildlife Refuges in the upper Sacramento Valley of California carry out a very significant role in the relief of wildlife problems to agriculture. The degree and diversity of vertebrate pest control effort by these refuges vary with local conditions and with environmental and budgetary limitations. Both the California Department of Fish and Game and the U. S. Fish and Wildlife Service consider the relief of crop damage to agriculture one of their most important functions. This is demonstrated by existing programs at the Sacramento, Delevan, Colusa and Sutter National Wildlife Refuges and the California Fish and Game Gray Lodge Wildlife …

Bird Damage Problems In Latin America, John W. De Grazio, Jerome F. Besser

Vertebrate Pest Conference Proceedings: 4th (1970)

In 1968 and 1969, biologists of the Denver Wildlife Research Center made field surveys in six Latin American countries to obtain information on bird damage problems in agriculture under an agreement with the Agency for International Development. Species of icterids, fringillids, psittids, columbids, and anatids caused most of the damage. Grain sorghum, corn, and rice were damaged most heavily. Other crops such as soybeans, wheat, cacao, and mangoes were also damaged, but seldom seriously.

Reproduction Inhibitors For Bird Control, M. R. Woulfe

Vertebrate Pest Conference Proceedings: 4th (1970)

Reproduction inhibitors are intended to maintain or control a population at a desired level; toxicants aim at elimination of the population. Azocosterol hydrochloride (SC-12937; 20,25-diazocholestenol dihydrochloride) is a long acting inhibitor of ovulation in the pigeon (Columba liyia) by interfering with cholesterol synthesis and egg yolk formation. Corn impregnated with SC-12937 at the 0.1% level by weight and fed for 10 days has been found to inhibit or diminish reproduction for 5-6 months. Population turnover rate, mortality and longevity of the feral urban pigeon are also discussed.

House Finch (Linnet) Control In California, Thomas K. Palmer

Vertebrate Pest Conference Proceedings: 4th (1970)

The house finch or linnet, Carpodacus mexicanus frontalis (Say) is a protected migratory nongame bird indigenous to California and found abundantly in all but the northern and mountainous areas. These finches attack more than twenty different crops and damage is demonstrated by fruit pecks, seed removal, and disbudding. When house finches cause agricultural damage control measures must be carried out under the general supervision of a county agricultural commissioner. Control practices involve the use of toxic baits, trap-decoy stations, and bio-acoustical devices. Most importantly, these control methods have been demonstrated to be safe, selective, and successful when employed by persons …

Importation Of Wildlife, Holger S. Larsen

Vertebrate Pest Conference Proceedings: 4th (1970)

The importation of live birds, mammals, reptiles, fish and amphibians into the United States is a growing problem to law enforcement agencies of the Federal and State governments. Importation of the above types of animals into the United States is supervised by the Bureau of Sport Fisheries and Wildlife, of the U. S. Department of the Interior. The function is of a regulatory nature: 1. to insure that no prohibited species enter the United States; 2. to enforce compliance with certain Federal Acts such as (a) the Migratory Bird Treaty Act, (b) the Lacey Act, Title 18 USC, Sec. 42, …

Current Work On Bird Hazards To Aircraft, Victor E. F. Solman

Vertebrate Pest Conference Proceedings: 4th (1970)

Collisions between birds and aircraft have caused loss of human life and millions of dollars worth of property damage. The advent of even larger planes may reduce airframe damage, but it seems doubtful that engine damage will be significantly reduced. Dealing with the problem biologically, involves combating the hazards caused both by birds on or near the ground at airfields, and by birds on mass migrations at altitudes up to several thousand feet above ground. Airports can be designed or altered to minimize their attraction to birds. The chance arrival of a flock of birds must be treated as an …

The Organisation Of Rabbit Control (Oryctolagus Cuniculus) In Western Australia, A. R. Tomlinson, C. D. Gooding

Vertebrate Pest Conference Proceedings: 4th (1970)

ABSTRACT: Under Western Australian legislation, landholders have an obligation to control rabbits on their properties; local authorities the responsibility to supervise their work whilst the Agriculture Protection Board has a Statewide supervisory and co-ordination role. Prior to 1950 (when the Agriculture Protection Board was formed) the central role was in the hands of a Government department which, through lack of staff and money was unable to provide adequate supervision, and rabbits were in plague proportions. Since 1950, the Board has actively engaged in a vigorous policy aimed at tighter control and supervision. To enable this, the Board has entered into …

Rodenticides - Problems And Current Research, F. P. Rowe, J. H. Greaves, R. Redfern, A. D. Martin

Vertebrate Pest Conference Proceedings: 4th (1970)

Regarded from both the economic and health aspects, the control of rodents is a pressing world wide problem. Continued improvements in food storage facilities, crop husbandry and environmental control are likely to do much in the long-term to help reduce rodent populations and damage. Looking ahead again, it is possible that biological control methods involving for example the use of reproduction inhibitors or rodent predators or diseases may ultimately be developed for rodent control purposes. In the immediate future however it is likely that rodent control operations will continue to be based on the use of rodenticides.

Some Wildflowers Of Western Australia, C. F. H. Jenkins, A. S. George

Bulletins - 3000 - 3999

MUCH recent discussion on conservation has centred around the importance of wild flower reserves and the need for protecting one of thci State's most important tourist attractions. Although less important to visitors than the flowers, many of our wild animals hold equal interest for nature lovers and scientists, and they also need protection.

ALTHOUGH the brilliance and diversity of West Australian wildflowers are widely appreci­ated, the localities where they can best be observed in their natural state are not so well known.

In this article a brief outline is given of the more important districts in the south western part …

Algal Growth And Decomposition: Effects On Water Quality, Edward G. Foree, John S. Tapp Jr.

KWRRI Research Reports

The chemical composition of algae grown in batch culture depends mainly on environmental conditions, nutrient availability, presence of predators, cell age, and species. The effects of nutrient availability and cell age on the composition of three unialgal cultures (algae + bacteria) and one hetergeneous culture (algae + bacteria + microscopic animals) were evaluated. The cultures were grown in batch culture under both nutrient-abundant and nutrient deficient conditions and the changes in compositions were observed. Luxurious uptake where nutrients are incorporated into cellular protoplasm at levels greater than those necessary for growth, and super-luxurious uptake, where some nutrients are stored rather …

A Permanent Type Poison Station For Porcupine Control, William A. Neitro

Vertebrate Pest Conference Proceedings: 4th (1970)

A method has been devised to protect the poison strychnine-salt blocks used in controlling porcupines, Erethizon dorsatum, from the weather, killing of non-target animals and vandalism. An aluminum poison bait station has been developed which is light weight, durable, camouflaged, and safe. These structures are easily constructed and are relatively inexpensive when longevity is considered. Porcupines are controlled effectively and economically using this method

Conference Participants -- 4th Vertebrate Pest Conference,

Vertebrate Pest Conference Proceedings: 4th (1970)

The Fourth Vertebrate Pest Conference was the largest ever, with 275 registered participants and an estimated additional 50 to 75 persons who attended portions of the conference but did not register. The attendance was made up of individuals having varying interests in vertebrate pest problems, including foresters, agriculturalists, conservationists, pest control operators, vector control specialists, health officials, wildlife specialists, product distributors and manufacturers, instructors and researchers from twenty nine states plus the District of Columbia. Participants from Canada, England, Germany and Japan provided an international touch which contributed greatly to the success of the conference.

Water Resources News, Volume 2, No. 3, March 1970

Water Current Newsletter

NWRRI Announces Approval of Matching Grant Proposals
National Environmental Policy Act of 1969 - Landmark Achievement
Chairman of Environmental Quality Council Named by Nixon
River System Engineering - Summer Short Course
Plan to Eliminate Thermal Pollution - Result in Navigation Channels?
Executive Director Appointed to Water Resources Council
Ecologic Aspects of Weather Modification
Ash Commission Reports on Civil Works Functions of the Corps
Hail Suppresion, Next Major Thrust of Weather Modification Research Program
USDA to Fight Water and Soil Pollution from Animal Wastes
Major Clean-Up Proposals Made by Nixon
NSF to Redirect Its Efforts
USGS to Lead Research in Underground …

The Prairie Naturalist Volume 2, No. 1. March, 1970

The Prairie Naturalist

EDITORIAL: Speaking of Ecologists ▪ Paul B. Kannowski

NEEDED: AN ETHICAL BASIS FOR ENVIRONMENTAL POLICY ▪ Gordon L. Iseminger

THE POPULATION PARADOX ▪ Gary L. Pearson

THE ENVIRONMENTAL CRISIS—A CALL TO ACTION ▪ Glen A. Sherwood

NORTH DAKOTA—1970 ▪ Philip B. Aus

Hydrologic Inventory Of The Uintah Study Unit, Lloyd H. Austin, Gaylord V. Skogerboe

Reports

The 1963 Utah State Legislature authorized the Utah Water and Power Board (now the Utah Division of Water Resources) to develop a state water plan in order to give coordination and direction to the activities of all state and federal agencies concerned with Utah's water resources. To facilitate the development of this plan, a proposal was submitted through the State Planning Coordinator in the Governor's Office to the Urban Renewal Administration of the Housing and Home Finance Agency. Funding was approved effective May 19, 1966, under the Urban Planning Assistance Program authorized by Section 701 of the Housing Act of …

Closed Conduit To Open Channel Usu Stilling Basin, Gordon H. Flammer, Gaylord V. Skogerboe, Chi-Yuan Wei, Hameed Rasheed

Reports

Criterion have been developed for designing a stilling basin to serve as a transition from closed conduit flow to open channel flow for a fully submerged pipe outlet. The unique feature of the stilling basin is the short-pipe energy dissipater so located and designed as to provide maximum energy dissipation for the basin configuration. The expanding characteristics of a submerged jet were used in establishing the length of the stilling basin. The unsteadiness of the water surface and the relative boil height in the model basin were used as the criteria for evaluating the effectiveness of the structure for energy …

Carbamate Baits Discourage Blackbirds From Using Feedlots, Paul P. Woronecki, Joseph L. Guarino, Jerome F. Besser, John W. De Grazio

Vertebrate Pest Conference Proceedings: 4th (1970)

Red-winged blackbirds (Agelaius phoeniceus) have been discouraged from using cattle feedlots near Denver, Colorado, by baiting alleys with cracked corn treated with an aversion-producing immobi1izing agent, DRC-736 [4-(methylthio)-3,5-xylyl N-methylcarbamate]. In three studies, large populations of redwings were reduced 70% - 98% within a few days and protection lasted about a month. In a fourth study, simultaneous baiting of three heavily used feedlots reduced redwing use by more than 90% within hours and was apparently responsible for these birds abandoning their roost and relocating in areas where they caused little trouble. Mortality was low (less than 5% of affected redwings in …

Closing Remarks - Fourth Vertebrate Pest Conference, Rex E. Marsh

Vertebrate Pest Conference Proceedings: 4th (1970)

On behalf of the California Vertebrate Pest Committee, which sponsors these conferences, I wish to thank all of the speakers for their contribution to the program and the session chairmen who kept the meeting moving so smoothly. We would like to extend a special thanks to the speakers and participants who have come from other countries to share with us some of their knowledge concerning vertebrate pest problems and their solutions. Hopefully, the acquaintances made here and the exchange of information with our colleagues from distant places will be the beginning of long-lasting friendships and will foster better communications between …

Surfactants As Blackbird Stressing Agents, Paul W. Lefebvre, John L. Seubert

Vertebrate Pest Conference Proceedings: 4th (1970)

Applications of wetting-agent solutions produce mortality in birds. The exact cause of death is undetermined, but it is believed that destruction of the insulating qualities of the plumage permits ambient cold temperatures and evaporation to lower the body temperature to a lethal level. The original concept of using these materials as bird-control tools was developed in 1958 at the Patuxent Wildlife Research Center, Bureau of Sport Fisheries and Wildlife, Laurel, Maryland. Early field trials by personnel of the Division of Wildlife Services and the Denver Wildlife Research Center indicated that ground-application techniques had promise, but limitations of the equipment precluded …

Water Resources News, Volume 2, No. 2, February 1970

Water Current Newsletter

Evaporation Reduction
National Science Foundation Announces a New Program
The Universities and Environmental Quality
Guidelines Will Be Issued for Federal Programs Affecting the Environment
Conservation and the Environment - Big Political Issue?
National Land Use Policy Act of 1970
The Safety of Community Water Supply Systems
River System Engineering - Summer Short Course
OWRR Holds Fifth Annual Water Resources Research Conference
Environmental Health Service Organized at HEW
Algae-Eating Fish - A Possible Way to Control Eutrophication?
Resources for the Future Considerse Non-Monetary Benefits for Conservation Goals
Agreement to Require Discharges of Wastes Into the Nation's Waterways to Reveal Their Pollution …

Winter Behavior Of The Eastern Box Turtle, Terrapene C. Carolina L., In Eastern Tennessee, Richard A. Dolbeer

United States Department of Agriculture Wildlife Services: Staff Publications

A field study of winter movements and depths and types of hibernacula of the eastern box turtle, Terrapene carolina carolina L., was undertaken from October 1968-January 1969.

Effects Of Abatement Of Domestic Sewage Pollution On The Benthos, Volumes Of Zooplankton, And The Fouling Organisms Of Biscayne Bay, Florida, J. Kneeland Mcnulty

Studies in Tropical Oceanography

No abstract provided.

Reducing Evaporation From Farm Dams : A Progress Report December 1969, I A F Laing

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

IN most seasons in the Western Australian Wheatbelt evaporation reduction techniques rate a low priority due to either the expense or the relative inefficiency of the techniques.

It is generally agreed that a similar investment in deepening or enlarging existing dams, or making new dams larger from the outset, is likely to be more profitable.

Concentration Of Co, In The Air Above A Sugar Beet Field, K.W. Brown, Norman J. Rosenberg

School of Natural Resources: Faculty Publications

The concentration of CO, in air sampled above a sugar beet crop was measured during July, August, and early September 1966 at Scottsbluff, Nebr. During July the mean daytime concentration decreased from 310 ppm to 283 ppm as the leaf area index increased from 0.8 to 4.0. Only small deviations from the mean daytime Concentration of 283 ppm occurred during the remainder of the season. The mean nocturnal concentration during this period was 320 ppm and was more variable than the daytime concentration. The daily amplitude of concentration averaged 70 ppm and was as great at times as 100 ppm. …