1 / 15

Phytoplankton Diversity in New York Lakes

Ryan Butryn and Rick Naro. Phytoplankton Diversity in New York Lakes. http://www.turnerdesigns.com/t2/instruments/10au.html. http://www.durr.demon.co.uk/volvox.html. Study Sites. Analysis of phytoplankton diversity and chlorophyll-a levels in New York lakes: Arbutus Lake Wolf Lake

duke
Download Presentation

Phytoplankton Diversity in New York Lakes

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. Ryan Butryn and Rick Naro Phytoplankton Diversity in New York Lakes http://www.turnerdesigns.com/t2/instruments/10au.html http://www.durr.demon.co.uk/volvox.html

  2. Study Sites • Analysis of phytoplankton diversity and chlorophyll-a levels in New York lakes: • Arbutus Lake • Wolf Lake • Catlin Lake • Oneida Lake • Green Lake • Onondaga Lake • Skaneateles Lake Wolf Lake

  3. Chlorophyll Study Site Procedures • Collect water sample from defined lake layers • epilimnion • metalimnion • hypolimnion • Green Lake sampling included • chemocline • monimolimnion Arbutus Lake

  4. Chlorophyll Lab Procedure • Turner Designs 10-AU Field Fluorometer • Measures the fluorescence of chlorophyll-a • Highly sensitive • Suitable for extractive and in vivo analysis • Sample Processing • 100ml water sample filtered • Filter paper dissolved in 10ml acetone http://www.turnerdesigns.com/t2/instruments/10au.html

  5. Chlorophyll-a Results

  6. A Special Case: Green Lake • Lake profile appears to be similar to other low productivity lakes • Highest chlorophyll-a level is found in the chemocline

  7. Green Lake Chlorophyll-a Profile

  8. Why is chlorophyll-a so high? • We hypothesize that green photosynthetic bacteria should be present in solution and masked by the purple bacteria • Further processing is required to confirm this.

  9. Phytoplankton Collection • Van Dorn trap used to sample each lake layer • Samples stabilized with preservative solution • Identified and counted under microscope

  10. Phytoplankton Divisions

  11. Phytoplankton Divisions Quadricoccus euryhalinicus

  12. Catlin Phytoplankton Genera

  13. Oneida Phytoplankton Genera

  14. Onondaga Phytoplankton Genera

  15. Summary of Observations • Chlorophyll • Highest in epilimnion and hypolimnion in eutrophic lakes, lower in metalimnion • Relatively constant density in oligotrophic lakes • Green Lake a special case • Phytoplankton • Increasing eutrophication = higher phytoplankton diversity • Cyanophytes tend to dominate eutrophic lakes • Chlorophytes dominate more oligotrophic lakes • More plankton diversity in epilimnion, more plankton numbers in metalimnion and hypolimnion

More Related