Phytoplankton dynamics in the Finger Lakes assessed using a FluoroProbe and conventional techniques
Abstract
Nutrient loading has resulted in the occurrence of harmful algal blooms (HABs) in the Finger Lakes of central and western New York, even in oligo- and meso-trophic lakes. Detectable levels of microcystin were found in finished drinking water in the region in 2016. Since 2016 we have used a bbe FluoroProbe (FP; bbe Moldaenke, Germany) that operates via in situspectral fluorescenceto study and monitor phytoplankton community dynamics including the four major algal groups 'green' algae (Chlorophyta and Euglenophyta), 'brown' algae (Baccillariophyta, Chyrsophyta, and Dinophyta), 'blue-green' algae (Cyanophyta), and 'red' algae (Cryptophyta). We will present our analysis and interpretation of FP chlorophyll data and compare results to conventional chlorophyll-a analyses by spectrophotometer and fluorometer to assess how the methods compare. Data from a range of lakes representing low to high nutrient levels will be presented. Finally, chlorophyll results from integrated water column samples analyzed with the FP will be compared to grab samples analyzed by conventional methods.
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.H43K2639A
- Keywords:
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- 0414 Biogeochemical cycles;
- processes;
- and modeling;
- BIOGEOSCIENCESDE: 0496 Water quality;
- BIOGEOSCIENCESDE: 1879 Watershed;
- HYDROLOGYDE: 1880 Water management;
- HYDROLOGY