1 / 23

Phosphate Levels and Macro Invertebrate Diversity

Phosphate Levels and Macro Invertebrate Diversity. By: Samantha Cooney and Joshua McKain. Justification. Water quality differences are known to affect macro invertebrate diversity Phosphate levels are known to spike in Fernan Lake

jolie
Download Presentation

Phosphate Levels and Macro Invertebrate Diversity

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Phosphate Levels and Macro Invertebrate Diversity By: Samantha Cooney and Joshua McKain

  2. Justification • Water quality differences are known to affect macro invertebrate diversity • Phosphate levels are known to spike in Fernan Lake • Could disequilibrium between phosphorus and nitrogen in the lake affect macro invertebrate diversity in lake outlet?

  3. Introduction • Initial Question • Do high phosphate concentrations affect macro invertebrate biodiversity in riffles? • Hypothesis • If phosphate levels are high, macro invertebrate biodiversity will be low.

  4. Methods • Disturb a .5 square meter area riffle with shovel • Collect macro inverts with a kick net • Organize inverts based on high quality, medium quality, and low quality species • Collect pH, DO, water temp., air temp, and phosphorous concentration at invert collection sites • Draw correlations using Anova

  5. Materials • Shovel • Kick net • 4 sample tubes • Lab quest • Probes: DO, pH, temp • Bug viewer • Hach kit • Forceps • Dichotomous keys

  6. Site 1 and 2 Site 3 Site 4 and 5

  7. Site 1

  8. Site 2

  9. Site 3

  10. Site 4

  11. Site 5

  12. Results

  13. Results

  14. Site 4 had low diversity and pop. density because there was no water flowing the day before we collected our samples.

  15. Analysis of the Variance to find if the means are correlated • (Ho: µ1=µ2) • (Ha: µ1≠µ2). • f* is not in the critical region, there for we accept (Ho: µ1=µ2) and reject the null hypothesis (Ha) that the means are not related. • P-value 0.657637> 0.05 therefore we accept Ho

  16. Application in the classroom • Mirror Adventure Learning • Place-based learning and field trips • More time collecting data on inverts • Lessons on dichotomous keys • Blogging • AL vs. DL

  17. Conclusion • Data supported hypothesis • Phosphate concentrations seem to have an affect on macro invertebrate diversity • Difference of means are related • Too little data may have skewed results • More time in data collection • More time identifying individual species • Confusion with units for phosphate

More Related