Sean Reese Marshall University Thesis proposal Spring 2008

 Alternative Sampling Method Electro Fishing Gill Net Seine Net

 Increase Species Detection Reduce Zero Catch  Species Specific Modifications  Bio-Indicators Tom Jones 2007

Electro fishing efficiency 500 m reach at river mile Bathyometric map of 500 m reach at river mile S. Reese/C. Swecker

Dr. Tom Jones 2006

S.Reese

 Photic Zone  How far light is visible through the water column.  Photosynthesis  Temperature  Dissolved Oxygen  Organisms

 Transparency has no effect on catch rates.  Transparency has no effect on number of species collected.  Temperature has no effect on catch rates.  Temperature has no effect on number of species collected.

 Temperature directly effects termination of spawning  Abiotic factors such as temperature are an important influence in habitat  Ongoing studies (A.L. Sheils 2005) (Whiteside and McNatt 1972).

 Trawl Net 8 ft Missouri type trawl Net 3.8 inch mesh 25 m rope  Hydro Lab  Secchi Disc  River Surveyor

 Recorded Temperature  Individual probes  Single Reading (2).jpg

 Measures Transparency of Water  Recorded at lowest point visible  Subjective

Compare Summer River Run Trawl Data with ORSANCO Trawling Data. Trawl Lower Susquehanna River Using Same Protocols and Sampling Equipment Study Other Factors Effecting Trawl Outcome ( Velocity, Dissolved Oxygen, Boat Speed Etc.)

 Bathymetric and substrate maps using copper pole technique

 Dr. Tom Jones and lab  ORSANCO  Faculty and Students of BSC 662

Questions??

Questions???

 temperature and or secci depth show a pattern with number of specimens and darters per trawl  lower transparency shows a tendency for better trawl efficiency in benthic habitats

 ORSANCO trawling contract – 4 Specific pools - Montgomery - Willow Island - Greenup - Cannelton

 River Run 2007 – entire Ohio River  ORSANCO trawling contract – 3 Specific pools - Pike Island - Meldahl - Newburgh