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Natural Resources and Conservation

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Articles 5191 - 5198 of 5198

Full-Text Articles in Natural Resources Management and Policy

Ultrasonic Tracking Of Migratory Fishes With An Internal Tag, Ross M. Horrall, H. F. Henderson, A. D. Hasler Sep 1965

Ultrasonic Tracking Of Migratory Fishes With An Internal Tag, Ross M. Horrall, H. F. Henderson, A. D. Hasler

School of Natural Resources: Faculty Publications

First paragraph:

A small ultrasonic tag, 9 mm by 40 mm in size, has been developed by members of the fish orientation group at the University of Wisconsin. The tag emits a continuous signal at approximately 65 kc/sec. The signal is received via a directional hydrophone and a high quality communications receiver. Tracking ranges of up to 1 km have been obtained. The placement of the tag is internal: either into the stomach or into the body cavity of the fish. The tags and tracking equipment have been successfully employed in studies on the open water movements and orientation of …


Fisheries Report No I (1) - The Shark Bay Fishery On Snapper Chrysophrys Unicolor (Quoy And Gaimard), B. K. Bowen Jan 1964

Fisheries Report No I (1) - The Shark Bay Fishery On Snapper Chrysophrys Unicolor (Quoy And Gaimard), B. K. Bowen

Fisheries Research Reports

As regards both catch and value, the Shark Bay snapper fishery is the second most important scale fishery in Western Australia. Until 195%, the fishing was done solely by means of hard-lines operated from beats drifting over the snapper patches. In 1959 traps were first used with great success and in 196) this method of fishing was again the principal technique.

Prior to the 1960 season there were several suggestions that the use of traps would have a deleterious effect on the fishery. On October 19, 1959, the Western Australian League of the Professional Fishermen's Association wrote to the Fisheries …


Fisheries Report Ii (2) - Preliminary Report On The Effectiveness Of Escape-Gaps In Crayfish-Pots, B. K. Bowen Jan 1963

Fisheries Report Ii (2) - Preliminary Report On The Effectiveness Of Escape-Gaps In Crayfish-Pots, B. K. Bowen

Fisheries Research Reports

The Western Australian commercial crayfish, Panulinrus cy,nus George, (1962)", is caught in depths ranging from a few feet to approximately 45 fathoms. In the shallow waters large numbers of crayfish measuring, less than the legal minimum length are brought to the surface in the standard commercial crayfish pots. The law requires that these undersize crayfish be returned to the sea, but there is always the temptation to retain them for illegal sale. In addition, the undersize crayfish which are returned to the sea are often damaged by handling. The probability is that their mortality rate is higher than those which …


A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties, Vincent H. Dreeszen Jun 1950

A Subsurface Study Of The Pleistocene Deposits In Kearney County And Adjoining Parts Of Adams, Franklin, And Webster Counties, Vincent H. Dreeszen

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Ua37/23 Whas Broadcast No. 75, Whas, Western Kentucky University, Earl Moore Jan 1938

Ua37/23 Whas Broadcast No. 75, Whas, Western Kentucky University, Earl Moore

WKU Administration Documents

Script for weekly WKU broadcast on WHAS radio. This show included Earl Moore, Ellen Jeffries, Judson Griffin, Mary Marks and Merle Lamon discussing conservation of natural resources.


A Geographic Interpretation Of Some Of The Factors Effective In The Location And Development Of Lincoln, Nebraska, Ruth Mcdill May 1925

A Geographic Interpretation Of Some Of The Factors Effective In The Location And Development Of Lincoln, Nebraska, Ruth Mcdill

School of Natural Resources: Dissertations, Theses, and Student Research

No abstract provided.


Unlocking The Potential Of Remote Sensing For Arsenic Contamination Detection And Management: Challenges And Perspective, V. Agarwal, M. Kumar, D. Prasad Panday, J. Zang, Francisco Munoz-Arriola Dec 223

Unlocking The Potential Of Remote Sensing For Arsenic Contamination Detection And Management: Challenges And Perspective, V. Agarwal, M. Kumar, D. Prasad Panday, J. Zang, Francisco Munoz-Arriola

School of Natural Resources: Faculty Publications

No abstract provided.


Irrigated Agriculture Significantly Modifies Seasonal Boundary Layer Atmosphere And Lower Tropospheric Convective Environment, E. Lachenmeier, R. Mahmood, C. Phillips, U. Nair, E. Rappin, R. Pielke Sr., W. Brown, S. Oncley, J. Wurman, K. Kosiba, A. Kaulfus, J. Santanello Jr., E. Kim, P. Lawston-Parker, Michael Hayes, T. Franz Dec 222

Irrigated Agriculture Significantly Modifies Seasonal Boundary Layer Atmosphere And Lower Tropospheric Convective Environment, E. Lachenmeier, R. Mahmood, C. Phillips, U. Nair, E. Rappin, R. Pielke Sr., W. Brown, S. Oncley, J. Wurman, K. Kosiba, A. Kaulfus, J. Santanello Jr., E. Kim, P. Lawston-Parker, Michael Hayes, T. Franz

School of Natural Resources: Faculty Publications

No abstract provided.