1. Profiles: Ingle’s Pond Chemistry and Bathymetry  (x) group III Brad Malone Justin Smith Colter Smart Katherine Teater

2. Background  Pond located south of Kendrick Built 1995-1996 2-3 acres Deepest near dam  14-16 ft.  100 dump truck loads taken out after filled in with sediment and vegetation  1 st stocking 1500 rainbow trout 50 largemouth bass 50 breeding bluegill  2 nd stocking 500 rainbow trout 250 catfish 50 Smallmouth bass 250 bullfrog tadpoles www.marinebiochemists.com/stocking.html

3. Objectives  Physical profiles Temperature (°C) Dissolved O 2 pH Light irradiance Conductivity, Chlorophyll a Total Phosphorous (TP)  Bathometric Map  Determine why fish stocks are declining Using Physical and Biological Characteristics

4. Methods

5.  At each site Secchi depth ~0.3 m YSI MPS-556 (O 2, °C, pH, conductivity)  ½ meter Van Dorn Bottle (TP and Chl a)  1 meter Light meter  ½ meter  GPS/depth finder (bathometric map) Multi-meter Methods referenced at class website http://www.cnr.uidaho.edu/fish415/ Secchi Disk Light Meter Van Dorn Bottle

6. Results

7. Temperature, O 2, pH

8. Light Profile Extinction Coefficient = 5.46

9. Light Profile Reservoir Coefficient Photic Zone -Dworshak.24 18.8 m -Spring Valley 1.08 2.47 m -Ingle’s Pond 5.46.84 m

10. Total Phosphorous

11. Chl a

12. Bathometric Map

13. How relates to fish  Rainbow Trout (Oncorhynchus mykiss)  Bluegill (Lepomis macrochirus)  Largemouth Bass (Micropterus salmoides)  Added Smallmouth Bass Catfish Bullfrog More RBT

14. Living Conditions of Fish  Largemouth bass 10-32 ºC pH 7 – 8 Small-mouth bass 10 ºC – 30 ºC (consistently) Clearer/cooler water than the largemouth  Bluegill 1-36 ºC pH 7-8  Rainbow Trout 10-24 ºC, prefers 12 ºC

15. Summary Outline  Problems: Temperature seasonal variation pH out of range Not enough light Habitat not conducive to spawning

16. Summary Outline  Problems: Summer stratification Aerators acting as nutrient pump Habitat not conducive to spawning  Hypothesis Wrong type of phytoplankton for zooplankton growth Fish predation too high on zooplankton

17. Questions?