[Coral-List] Cyanobacteria* Blooms?

[Alina Szmant]

Hello Ruleo:

They look like thin filamentous cyanobacteria to me. Also notice the irregular strands of reddish grown on the benthos in parts of the video that also appear to be cyanobacteria. At that depth I would guess that island mass-induced upwelling is the cause of the algal blooms. This has been reported many times going back many decades in the Caribbean. Search for papers by Finn Sanders. Several come up using the Scholar Google search engine.

Alina Szmant




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-----Original Message-----
From: Coral-List <coral-list-bounces at coral.aoml.noaa.gov> On Behalf Of Ruleo Camacho via Coral-List
Sent: Monday, April 3, 2023 1:30 PM
To: coral-list at coral.aoml.noaa.gov
Subject: [Coral-List] Cyanobacteria* Blooms?

Good day all.

Here in Antigua and Barbuda, we have been getting reports of Cyanobacteria Blooms in particular areas. These are in deep water (~50-80ft) and first were in the water column then settling in the bottom (depth of about 6 inches). The areas they have been observed in have no affiliation to pollution sites so we are a bit confused.

A college of mine in Jamaica had also reported something similar. There, fishermen are reporting net fouling.

I've included a youtube video here <https://youtu.be/shPFuEfgdrw> highlighting this algae, and would appreciate any information that can be shared regarding ID/Cause/Observations in other areas.

https://youtu.be/shPFuEfgdrw



Regards

--
Ruleo A. Camacho
MSc Marine Biology (Coral Reefs)
MSc Marine Policy (Alternative Marine Management Systems) US Fulbright Foreign Scholar 2013-6
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