Scott L. Van Horn

Lake Norman Striped Bass Management: A Conflict between Fishery Managers and Anglers

The North Carolina Wildlife Resources Commission (WRC) stocks striped bass (Morone saxatilis) fingerlings in Lake Norman to support a put-grow-and-take fishery. Members from 2 angling groups demanded the WRC raise striped bass stocking rates and increase available striped bass forage. The agency contended increasing stocking rates would exacerbate poor condition and slow growth among the lake's striped bass. Conflict between the WRC and anglers arose when the agency indicated it would not raise striped bass stocking rates, stock additional clupeids, or introduce alosids. An Advisory...

Year
2001

Response of Juvenile Largemouth Bass to Habitat Enhancement Through Addition of Artificial Substrates

The availability of quality nursery habitats can be an important factor in the recuitment dynamics of littoral fish species. Eight artificial habitats composed of crushed rock substrate were established in littoral areas of an embayment of B. E. Jordan Lake, North Carolina, that historically exhibited low abundances of juvenile largemouth bass (Micropterus salmoides). Response of juvenile largemouth bass to habitats was assessed by night shoreline electrofishing at treatment sites and associated controls on 4 occasions during the growing season in each of 3 years. Significantly more age-0...

Year
2000

Observations of Spatial Heterogeneity in the Age Distribution of Black Crappie in B. E. Jordan Reservoir

In October 1997, apparent spatial heterogeneity in the black crappie (Pomoxis nigromaculatus) age distribution was observed in B.E. Jordan Reservoir. The number of age groups for black crappie increased from downlake to uplake. The objective of this study was to verify this spatial heterogeneity. Trap nets were used to collect black crappie in 4 sections of the reservoir. Black crappie ages ranged from 1 to 17 years, and fish ≥10 years were found only in the upper 2 sections of the reservoir. Significant (P<0.05) differences in the black crappie age distribution were found between most...

Year
1999

Growth and Condition Response of Lake Norman Striped Bass to Increased Stocking Rates and More Restrictive Harvest Regulations

Striped bass (Morone saxatilis) stocking rates were increased in 1988 and more restrictive harvest regulations were initiated in 1992 to increase striped bass abundance in Lake Normal, North Carolina. The objective of this study was to make inferences about current forage sufficiency for striped bass from length at age of capture and body condition of striped bass collected since 1994. Fish were obtained from November-January fishing tournaments and gillnet sets in 1994-1998. Late season samples were designed to collect fish after they had several months to recover from any reduced...

Year
1999

Evaluation of Crappie Catch Rates and Size Distributions Obtained from 3 Different Trap Nets

The North Carolina Wildlife Resources Commission initiated a fall crappie (Pomoxis spp.) trap net-based stock assessment program in 1986. Since 1986, declining catch rates have forced increased effort to meet sample size requirements. The objective of this study was to determine the effect of trap net design on crappie capture rates and size selectivity. In March and April 1998, 5 trap nets each of 3 mesh sizes (13, 19, and 25 mm bar measure) were set overnight (24 hours) for 4 consecutive nights on 3 piedmont North Carolina reservoirs. Catch rates of crappie approximately doubled with...

Year
1998

Summer Habitat Selection of Striped Bass in Lake Norman

Lake Norman is a 13,516-ha reservoir frequently devoid in late summer of the cool, well-oxygenated water preferred by mature striped bass {Morone saxatilis). Large summer striped bass kills, however, are rare. The objective of this study was to determine the summer temperature and dissolved oxygen (DO) levels in habitat used by striped bass in Lake Norman. We tagged 48 striped bass (2.2-7.8 kg) with temperaturesensing radio tags (40-50 MHz) during spring 1992 and 1993. Tag frequency, tag temperature, location, and a water column temperature/DO profile were recorded for each tag encounter....

Year
1996

Intra-season Variation in Largemouth Bass Electrofishing Catch-Per-Unit-Effort: Implications for Management Decisions

The objective of this study was to determine if largemouth bass (Micropterus salmoides) electrofishing catch-per-unit-effort (CPUE) varied within the traditional spring sampling season. Shoreline electrofishing for largemouth bass was conducted on Chowan River and Sutton Lake in 1990 and on Tuckertown Reservoir in 1989 and 1990. There were at least 6 sample stations per body of water. Each of the 3 study locations was sampled 3 times from March through June. The number of bass >200 mm captured and effort were recorded by sample station and date. Effort was measured in electroshock time...

Year
1991

Catch/Release Bias in Reward Tag Exploitation Studies

A post card survey questionnaire was used to obtain information about the catch and release practices of anglers participating in largemouth bass (Micropterus salmoides) tag reward exploitation studies at 2 North Carolina reservoirs. The surveys demonstrated that at least 60% of all tagged bass captured were released. The post card survey resulted in substantial reductions in the estimated exploitation rates at both reservoirs.

Year
1984

The North Carolina Largemouth Bass Catch Survey

The North Carolina Largemouth Bass Catch Survey was initiated in 1975 to monitor angling success for largemouth bass (Micropterus salmoides) in the state's waters. The survey relies heavily on the participation of organized bass fishing clubs and reflects primarily tournament fishing results. Individual participants and clubs are asked to maintain catch records for each trip on a fishing log sheet. At the end of each month, the accumulated statistics are summarized by the participant and reported by body of water on preaddressed summary postcards. All materials are provided by the North...

Year
1981

Results of a 45-cm (18-in) Minimum Size Regulation on Largemouth Bass Populations

A 45-cm (18-in) minimum size limit was placed on largemouth bass (Micropterus salmoides) in January 1978 in 4 North Carolina reservoirs. Annual spring electrofishing samples were conducted to obtain size distribution information on each lake, length-weight information on 2 lakes, and largemouth bass population estimates on one of the study lakes. After a 4-year investigation, the proportion of quality size bass in the stock size distribution of 2 lakes increased. On a 3rd lake, a newly developing largemouth bass fishery was successfully protected from a reduction in quality size bass from...

Year
1981