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June 19, 2014 - ESP and R/V Tioga Update

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» ESP_deployments_2014_week8-1_188264.pdf
Final plot of ESP data for 2014 deployments.

We are into week 7 and are now winding down with the 3 ESP deployments in the western Gulf of Maine. ESP-3 (dennis) deployed off of Pemaquid Point has now run out of power and could not successfully complete any assays this week. ESP-1 (don) woke up today and could not complete the sampling after several tries to restart, so he is also done for the season. ESP-2 (jake) was programmed to sample 4 assays/week to accommodate the saxitoxin (stx) assay instead of 5 hab assays/week, so he has just a little more power to continue to work for now, but may suffer the same fate soon. We've had a really good run this year with all 3 ESPs working through the 2014 bloom conditions, but please see ground truth results below...the bloom is still ongoing.

Here's the ESP update on June 19, 2014.

ESP-1 (don) did not detect any Alexandrium signals on the arrays earlier this week, but ESPdon's mission is now done for the season. Good job don!

ESP-2 (jake) continues to work and detected a weak signal on Tuesday that was just below the stated ESP detection limit of 100 cells/Liter for a 4 Liter sample. Go jake!

ESP-3 (dennis) could not complete any hab assays this week due to insufficient power and is also done for the season. Good job dennis!

The ESP ground truth survey was completed on R/V Tioga early this week June 15-17...the live count results agreed with the mooring data and show very few cells right at the mooring sites. However, the broader scale survey data clearly indicate that this season's Alexandrium bloom is not over yet. Lurking just offshore of ESP-2 (jake) and ESP-3 (dennis), the live count data show 1000-2000 cells/Liter along both the Casco Bay and Pemaquid transects, primarily small Alexandrium cells. Further south and west along the NERACOOS B transect and the Cape Ann transect very few cells were detected. A weak patch offshore (~200 cells/L) of Cape Ann may be a remnant of the pulse of cells that transited the area last week. Please see the attached plot of the live count data from the recent Ti758 ESP survey.


Last updated: July 1, 2019

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