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Profiles: Ingle’s Pond Chemistry and Bathymetry

Profiles: Ingle’s Pond Chemistry and Bathymetry. (x) group III Brad Malone Justin Smith Colter Smart Katherine Teater. Background. Pond located south of Kendrick Built 1995-1996 2-3 acres Deepest near dam 14-16 ft.

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Profiles: Ingle’s Pond Chemistry and Bathymetry

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  1. Profiles: Ingle’s PondChemistry 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 • 1st stocking • 1500 rainbow trout • 50 largemouth bass • 50 breeding bluegill • 2nd stocking • 500 rainbow trout • 250 catfish • 50 Smallmouth bass • 250 bullfrog tadpoles www.marinebiochemists.com/stocking.html

  3. Objectives • Physical profiles • Temperature (°C) • Dissolved O2 • 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. Methods • At each site • Secchi depth ~0.3 m • YSI MPS-556 (O2, °C, pH, conductivity) • ½ meter • Van Dorn Bottle (TP and Chl a) • 1 meter • Light meter • ½ meter • GPS/depth finder (bathometric map) Secchi Disk Light Meter Van Dorn Bottle Multi-meter Methods referenced at class website http://www.cnr.uidaho.edu/fish415/

  6. Results

  7. Temperature, O2, pH

  8. Light Profile Extinction Coefficient = 5.46

  9. Light Profile ReservoirCoefficientPhotic 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?

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