| Event name: | US-17-027 | |
| Country: | UNITED STATES | |
|
Nature of the harmful event: |
Water Discoloration , High Phyto concentration , Other ( liver toxin production) | |
|
Event directly affected: |
Humans | |
| Toxicity detected: | Yes | |
| Associated syndrome: | OTHER | |
| Unexplained toxicity: | ||
| Species implicated in toxin transmission (transvector): | Previous blooms have resulted in impacts to dogs, birds and muskrats in Maryland. Peak microcystin in Lake Needwood was 6750 ppb (August 5) and Northwest Creek had >300 ppb (Oct 14). | |
| Report the outcome of a monitoring programme: | Yes (Maryland Phytoplankton Monitoring Program) | |
| Event occurred before in this location: | Yes (Lake Needwood No-contact advisories in 2009, 2010, 2012-17; Northwest Creek (Kent Island) no-contact advisories in 2012-14, (no samples in 2015), 2016 & 2017) | |
| Individuals to contact: | WAZNIAK, Cathy | |
| Location: | Latitude: , Longitude: | |
| General location information: |
Lake Needwood and Northwest Creek (non-tidal areas in MD), HAB Area code(s): US-10 |
|
| Additional location information: | Toxic blooms resulted in no-contact advisories placed on these waterbodies. Masonville cove (a restoration area) also exceeded microcystin action levels. Threshold in MD is 10 ppb and the bloom threshold for Microcystis is 40,000 c/mL. NW creek Aug-Oct | |
| Bloom event dates (yyyy/mm/dd): | ||
| Quarantine levels dates (yyyy/mm/dd): | First detection: 2017-06-15, End: 2017-06-18 | |
| Additional date-related information: | Sassafras River exceeded bloom levels | |
| Causative organism known: | Yes | |
| Causative Species/Genus: |
Microcystis aeruginosa
(1.1x10^10 cells/L)
At Lake Needwood Microcystis aeruginosa (1.2x10^9 cells/L) At Northwest Creek |
|
| Co-Ocurring Species/Genus: | ||
| Chlorophyll concentration, if known: | µg/l | |
| Additional bloom information: | ||
| Event-related bibliography: | ||
|
||||||||||||||||||||||||||
| Nutrient information: | ||||||||||||||||||||||||||
| Temperature Range During Event: | Max: °C, Min: °C | |||||||||||||||||||||||||
| Salinity Range During Event: | ||||||||||||||||||||||||||
| Bloom location in the water column: | ||||||||||||||||||||||||||
| Growth: | ||||||||||||||||||||||||||
| Growth Comments | ||||||||||||||||||||||||||
| Additional Environmental information: | ||||||||||||||||||||||||||
|
|||||||
| Kit used: | Type of kit used: | ||||||
| Additional information: | |||||||
| Economic losses: | |||||||
| Management decision: | |||||||
| Additional harmful effect information: | |||||||
