Table 4.
Cyanobacteria cell counts and toxin concentrations in water samples collected in response to a health event, fish kill, or report of an ongoing bloom. Values are median (range).
| Water Sample Parameter | Reason for Water Sample Collection | ||
|---|---|---|---|
| Response to a Human or Animal Health Event | Response to a Fish Kill | Response to a Report of a Bloom | |
| Cyanobacteria Cell Counts (cells/mL) | |||
| Anabaena spp. | 12,700 (251–7,600,000) (N = 13) | 34,000 (184–190,000) (N = 14) | 19,000 (87–4,231,033) (N = 79) |
| Aphanizomenon spp. | NR 1 | 41,000 (9000–9,500,000) (N = 7) | 26,000 (230–172,000) (N = 61) |
| Cylindrospermopsis spp. | 1700 (N = 1) | NR | 14,017 (34–28,000) (N = 2) |
| Lyngbya spp. | 206 (N = 1) | 98,400 (N = 1) | NR |
| Microcystis spp. | 27,000 (81–6,100,000) (N = 16) | 8000 (1200–614,000) (N = 4) | 14,300 (60–253,849) (N = 36) |
| Oscillatoria spp. | NR | 32,000 (6500–521,000) (N = 5) | NR |
| Planktothrix spp. | 140 (26–245) (N = 2) | NR | NR |
| Pseudoanabaena spp. | 119 (28–210) (N = 2) | 930 (105–116,000) (N = 3) | NR |
| Woronichia spp. | NR | NR | 13,000 (11,000–23,000) (N = 3) |
| Toxin Concentrations (µg/L) | |||
| Anatoxin | 0.75 (0–500) (N = 12) | NR | 0.05 (0–3,302,000) (N = 15) |
| Brevetoxins | NR | 0.0 (0.0–1.0) (N = 7) 2 | NR |
| Cylindrospermopsin | 0.5 (0–0.5) (N = 6) | NR | 0.1 (0–9.0) (N = 5) |
| Microcystins total | 15 (0–700) (N = 19) | 0.06 (0.0–307) (N = 22) | 0.9 (0–1385) (N = 140) |
| Microcystin-LR | 1.3 (1–249) (N = 9) | NR | 0.8 (0.2–1,120,000) (N = 16) |
1: Not reported; 2: Chatonella spp. identified but not quantified.