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Effects of a Dam Removal on River Channel Morphology and Habitat

Effects of a Dam Removal on River Channel Morphology and Habitat. Daniel Hayes Michigan State University First Note – make lettering so big it looks silly on your computer screen. Acknowledgments. Michigan Department of Natural Resources Consumers Energy U. S. Forest Service

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Effects of a Dam Removal on River Channel Morphology and Habitat

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  1. Effects of a Dam Removal on River Channel Morphology and Habitat Daniel Hayes Michigan State University First Note – make lettering so big it looks silly on your computer screen

  2. Acknowledgments Michigan Department of Natural Resources Consumers Energy U. S. Forest Service In class presentations, you probably won’t have an acknowledgments slide, but it is wise for scientific presentations or presentations to the public. You can put this near beginning or end of talk, but I prefer beginning so I can conclude with my take-home message

  3. Dam Removal: General Issues • Dams affect lotic systems in many ways, including • Direct effects on habitat • Blockage of fish movement • Juxtaposition of fish communities • Removal of dams has been used more as a tool • for restoration • There are few scientific studies of effects of dam • removal, however • The goal of introductory slides is to let your audience know what problem you are going to address and let them know why it is important (set up objectives!)

  4. Objectives • Document changes in river channel morphology across a 9-km river reach for a 6-year period • 2. Document changes in substrate composition • 3. Document changes in water velocity • I prefer to have a slide that lists specific objectives of the talk – this helps provide a “roadmap” for the talk

  5. Methods: Channel Morphology 31 permanent cross-sectional transects monitored annually since 1996 to detect changes in stream bed morphology

  6. Methods For our class presentations, you may need to spend quite a bit of time on methods. In scientific presentations, don’t spend much time on methods or you won’t be able to cover your results thoroughly

  7. Results • Some key reminders – • Generally don’t try to present more than 3 lines • per graph • Tables should not have more than 3-4 columns • and if possible no more than 5-6 rows • In short talks like this, you can usually only get • across 2-3 main points in the results section

  8. Results Following is an example where sequential results are “animated”.

  9. Summary • The channel in the Impacted zone has been • altered as sediment is scoured away and • transported downstream. • Use the summary to wrap things up and provide • “take-home” message. This should tie back in with your objectives. Some folks like using a copy of the • objectives slide to guide or organize the summary

  10. Other Thoughts • Photographs help make the talk more interesting, but may take away time. I suggest using photographs more in outreach talks to the general public, or in longer (e.g., 30-50 minute) presentations • My personal bias is to keep the background simple; spend your time on the quality and clarity of your results graphics. • Plan on approximately 1 minute per slide, on average. A 12 minute talk will likely have 12-16 slides. Slides in modeling talks often take much more than 1 minute to cover, so plan (practice) accordingly

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