8984-R2_NewGloucester_2023-2024_AnnualReport_Web

2024 Sabbathday Lake Water Quality Report

APPENDIX A- 2024 PHYTOPLANKTON RESULTS

PHYTOPLANKTON DENSITY (CELLS/ML)

PHYTOPLANKTON BIOMASS (UG/L)

* = potentially toxic

** = likely toxic # = taste and odor producer

SABB

SABB

SABB

SABB

SABB

SABB

TAXON

07/10/24 08/14/24 09/11/24 07/10/24 08/14/24 09/11/24

BACILLARIOPHYTA Centric Diatoms Aulacoseira #

0

0

82

0.0 1.9

0.0 1.0

24.5

Cyclotella/related taxa #

19 10

10 10

0 0

0.0 0.0

Urosolenia

11.4

11.4

Araphid Pennate Diatoms Asterionella #

29

0

109

5.7

0.0

21.8

Diatoma

133

29

0 0

186.2

39.9

0.0 0.0

Single Fragilaria/Synedra

19

0

15.2

0.0

Monoraphid Pennate Diatoms

Biraphid Pennate Diatoms

CHLOROPHYTA Flagellated Chlorophytes

Coccoid/Colonial Chlorophytes Oocystis

38 38

38 38

0 0

15.2

114.0

0.0 0.0

Scenedesmus #

3.8

3.8

Filamentous Chlorophytes

Desmids

CHRYSOPHYTA Flagellated Classic Chrysophytes Chrysosphaerella #

86 29 19

48

0

34.2 85.5 15.2

19.0

0.0

Dinobryon #

105

41

313.5

122.4

Synura #

0

0

0.0

0.0

Non-Motile Classic Chrysophytes

Haptophytes

Tribophytes/Eustigmatophytes

Raphidophytes

CRYPTOPHYTA

15

101