1. Arbutus, Catlin, Green, Oneida, Onondaga, and Wolf.
Phytoplankton in Six New York Lakes
Arbutus, Catlin, Green, Oneida, Onondaga, and Wolf.
Presented by
Thomas Clement
&
Amanda Stella

2. Why are phytoplankton important?
Produce O2 in lakes
Indicator of primary production
Control Other populations of organisms

3. How phytoplankton is measured
Sampling Techniques
Van Dorn
Preservation with Lugols solution
Lab Techniques
Water settled for several days
Increased concentration
Identified to Genus

4. Chlorophyll Main pigment in photosynthetic organisms
Commonly used as an indicator of production

5. Chlorophyll Analysis Water sampled out in field In Lab Mix sample
Measure sample
Filtered
Packaged in foil
Frozen until analysis

6. Chlorophyll Analysis Con’t
90% buffered acetone used for extraction
Filters added to 15ml alkaline acetone solution
Refrigerated for 24 hours
Fluorometer was used
Fluorometer produces a concentration in µgrams/liter

7. Chlorophyll concentrations in the lakes

8. Phytoplankton

9. Phytoplankton Con’t

10. Phytoplankton Abundance

11. Phytoplankton Abundance Cont’d

12. Conclusions Cross-Lake Comparisons Sampling Error
Wide variety of phytoplankton
Sampling Error
Sampling day conditions
Analyzing techniques