TPWD 1968 F-2-R-15 #1192: Fisheries Resurvey of Lake Lyndon B. Johnson: Job Progress Report, Federal Aid Project F-2-15

--- Page 1 --- JOB PROGRESS REPORT As required by FEDERAL ALD IN VYSHERYTRES RESTORATION ACT TEXAS Federal Aid Project No. F-2-15 REGION 2-B FISHERIES STUDIES Job No. B-24: Fisheries Resurvey of Lake Lyndon B. Johnson Froject Leader: Richard L. White J. R. Singleton Executive Director Texas Parks and Wildlife Department Austin, Texas Marion Toole Eugene A. Walker D-J Coordinator Director, Wildlife Services November 13, 1968 --- Page 2 --- Job Progress Report State of Texas Project No, F-2-15 Name: Region 2-B Fisheries Studies Job No. B- 24 Title: Fisheries Resurvey of Lake Lyndon B. Johnson Period Covered: February 1, 1967 to January 31, 1968 Objectives: To analyze and evaluate for possible publication (other than a Job Progress Report) data collected under Job B-24, F-2-12, F-2-13 and F-2-14. Procedures: Published literature was screened regarding the effect of commercial fishing on fishery complexes in freshwater lakes. Data obtained during 3 segments of work were reviewed and evaluated for publication as an Inland Fisheries Bulletin. Findings: Although data indicated that a population change (a shift in smallmouth buffalo- river carpsucker ratio) occurred during the commercial netting of Lake Lyndon B. Johnson, it was felt by project personnel that additional data should be collected over a 3-year post-commercial netting period. This control period collection of data would determine whether the population changes were permanent or if the fish populations returned to the pre-netting state. This information was felt to be necessary for an accurate analysis of the effects of commercial netting. The job was amended to postpone publi- cation of this study until all of the data had been collected. Prepared by: _ Richard L. White Approved by: YZ (fare Spote Project Leader Coordinator Date: November 13, 1968 FRED G. LOWMAN Inland Fisheries Supervisor