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Envirothon 2012 Fisheries

Envirothon 2012 Fisheries. What is fisheries management Current Topics Understanding streams Using a dichotomous fish key. Fisheries Management in Missouri. People – Fish - Habitat. Current Topics. Federally-Endangered Pallid Sturgeon Threats?. Current Topics.

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Envirothon 2012 Fisheries

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  1. Envirothon 2012 Fisheries What is fisheries management Current Topics Understanding streams Using a dichotomous fish key

  2. Fisheries Management in Missouri People – Fish - Habitat

  3. Current Topics Federally-Endangered Pallid Sturgeon Threats?

  4. Current Topics Identify some of the threats to the pallid sturgeon in missouri’s rivers

  5. Current Topics Asian carp

  6. Current Topics Filter Feeding by asian carp is a threat to native species, including: paddlefish,bigmouth buffalo, gizzard shad and larvae and juveniles of all species

  7. Current Topics Think of some ways we could control exploding populations of Asian carp on Missouri’s rivers.

  8. Current Topics Federally-Endangered Topeka Shiner Info at: mdc.mo.gov/node/5165

  9. Current Topics Topeka Shiners are found in prairie streams of central missouri

  10. Current Topics Due to habitat degradation only two Topeka shiner populations remain in Missouri

  11. Current Topics Why have topeka shiners been in such a severe decline? Intensive row crop production Increased urbanization Competition from other species More widespread use of pesticides Fragmentation of habitat Tributary impoundment Highway construction

  12. Current Topics How can we recover Topeka Shiners? By using best management practices in watersheds where topeka shiners are historically located. Try to come up with some good examples of these practices.

  13. Current Topics Topeka Shiner Recovery Plan can be found at: mdc.mo.gov/node/5165

  14. Understanding Streams Watershed Floodplain Riparian corridor channel

  15. Understanding Streams Watershed Floodplain Riparian corridor channel

  16. A Healthy Channel is Sinuous Channel

  17. = 10 MILES 620 ft 590 ft

  18. A C = 5 MILES 620 ft 590 ft

  19. Gradient Velocity Gradient = 3 ft per Mile 620 ft 590 ft 10 MILES 620 ft Gradient = 6 ft per Mile 590 ft 5 MILES

  20. Headcut Erosion Upstream

  21. Deposition Downstream

  22. Understanding Streams Watershed Floodplain Riparian corridor channel

  23. Understanding Streams Watershed Floodplain Riparian corridor channel

  24. Missouri Fish Identification A dichotomous key is a tool used to ID trees, wildflowers, mammals, reptiles, rocks, and fish. "Dichotomous" means "divided into two parts.” Therefore, dichotomous keys always give two choices in each step.

  25. Start With Family • Begin at beginning. • Need to use glossary for definitions. • One bad guess and you lose. • Ex. Pectoral and pelvic fins absent, Lampreys Go to page 38.

  26. On To Genus • Need to use pictures of anatomy. • One bad guess and you lose. • Ex. Eyes developed; Dorsal fin divided into two distinct parts - go to page step 6.

  27. Questions?

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