Tag Archives: canal runoff

Aerial Update St Luice, Jupiter, Lake O-August 20-21, 2021

VISUAL UPDATE-AERIALS ST LUCIE, JUPITER, LAKE O pilots Ed Lippisch and Scott Kuhns

FOR FULL EVERGLADES’ SYSTEM ECOLOGICAL CONDITIONS REPORT SFWMD 8-18-21

SuperCub, Scott Kuhns, August 20, 2021, 9am

-St Lucie Inlet to Atlantic looking beautiful at this time day. Note nearshore reefs.

-Crossroads’ confluence of St Lucie River and Indian River Lagoon, S. Sewall’s Point – note lack of lush seagrass meadows

Jupiter Inlet and Loxahatchee River– heavy rains causing discoloration 

Beechcraft Baron, Ed Lippisch, August 21, 2021, 3:30pm

-Looking towards Stuart over Sewall’s Point, SLR/IRL. Sailfish Point Marina left  corner.-Sailfish Flats- note shades of seagrasses but no lush meadows-brown coloration -Over Atlantic-Indian River Lagoon lies east of Sewall’s Point, St Lucie River lies west -Various views

-One can see river’s proximity to Witham Field in Stuart. These photos show darkness of St Lucie due to stormwater runoff off lands and canals C-23. C-24, and C-44. No Lake O discharges.

-St Lucie Inlet 

-Stuart Sandbar with many boaters. Water is dark with stormwater and canal runoff but remains to recreational standards.

-West now over S-308, Port Mayaca, Lake O – no visible algae from altitude of 1500 feet. Satellite images do show algae on west and middle of lake. SEE my brother Todd’s website  EYEONELAKEO for all info. -Although water looks good at St Luice Inlet at an incoming tide, the estuary is suffering from too much input. Read Florida Oceanographic’s update for details.

Today, August 22, 2021 Lake Okeechobee is at 14.39 feet. This recent TCPalm article by Ed Killer gives insights based on a recent media conference with Col. Kelly of the ACOE.

Canal and basin map SLR/IRL. (Public)

What Exactly is Bioluminescence in the Indian River Lagoon? Is it a Good or Bad Sign?

bioluminescence
“The dinoflagellate, (marine plankton), Pyodinium bahamense is what “produces the light show in the IRL.” Photo credit: https://getupandgokayaking.com

About a week and a half ago, my mother sent me an email with photos of my father and her on a kayak trip at night in the Indian River Lagoon. She had seen an article in the Stuart News about a company called Motorized Kayaks of the Treasure Coast and their trip into the light show of bioluminescence that has been occurring off our shores.

First, I thought about how cool my parents are to be going on kayak trips in their mid- seventies, and second, I thought, “aren’t these little plankton creatures a kind of algae bloom, and aren’t algae blooms bad for the lagoon in spite of bioluminescence’s beauty?”

Algae blooms have been linked to recent 60% plus seagrass die-offs, poor water quality, as well as  IRL pelican, dolphin and manatee deaths.  Super blooms, brown tides, “regular” and “toxic” algae blooms are “fed” by fertilizer, septic effluent, canal and Lake Okeechobee discharges, especially in the southern lagoon.

[caption id="attachment_2989" align="alignnone" width="300"]My father, Tom Thurlow, preparing for a kayak trip into the Indian River Lagoon to view the bioluminescent light show. (Photo Sandra Thurlow, August, 2014) My father, Tom Thurlow, preparing for a kayak trip into the Indian River Lagoon to view the bioluminescent light show. (Photo Sandra Thurlow, August 19, 2014)

Well anyway, I decided to contact Dr. Edie Widder of ORCA, the Ocean Research and Conservation Association, in Ft. Pierce, (http://www.teamorca.org/cfiles/home.cfm) and ask.

Dr Widder  is a world-renowned bioluminescence expert; she has even worked with the US Navy in the “design” of ships that would not cause bioluminescent disruption in the oceans, and thus give away their location to enemy ships.

This was my question to Dr Widder:

Dear Edie,
My parents rented kayaks to go see the bioluminescence in the IRL. It got me
thinking. Is the light caused by the same creatures that cause toxic algae
blooms in the lagoon?
Is the bioluminescence a bad sign for the health of the lagoon? Thank you.
Hope all is well.

Her response:

Hi Jacqui – It’s kind of a good news bad news story. The dinoflagellate
producing the light show, Pyrodinium bahamense, happens to be one that
produces saxitoxin. Interestingly it’s the same dino that’s responsible for
the bioluminescent bays in Puerto Rico and in those bays it doesn’t produce
the saxitoxin. Here it does. It’s not known why although I have a theory
and it has nothing to do with pollution. (It’s a long story having to do
with how their bioluminescence functions to protect them from predators
under different concentrations.)

Dino blooms are usually preceded by rain events that flush nutrients into
the water and then a series of calm sunny days that promote photosynthesis.
Blooms like the one we’re seeing now used to be routine according to some of
the older fishermen I’ve talked to. They called it fire in the water. The
fact is the water can’t be too polluted or the dinoflagellates won’t grow.
I’ll send you an article with some pictures I took.

Cheers,

Edie

Here is a photo Dr Widder took of bioluminescence in the lagoon I copied and a link to a remarkable video.

Bioluminescence in the IRL photographed by Dr Edie Widder.
Bioluminescence in the IRL photographed by Dr Edie Widder.

Incredible pictures of barnacles feeding on bioluminescent dinoflagellates: (https://www.youtube.com/watch?v=y1jG8qFZyYY)

Thank you for sharing, Dr Widder!

In conclusion, I looked up saxitoxin and learned it is a “paralytic shellfish toxin” that is found is some shellfish and especially puffer fish. It has been found in few other places in the US as well as in  the Indian River Lagoon. I guess the little dinoflagellates, the same ones that make the pretty bioluminescence light,  not always, but sometimes, will produce this toxin which gets spread to some shellfish and some fish. If such a shellfish or fish is ingested,  it will make a human very sick.  Around 2002, 28 people got so sick here, in the Merritt Island area, and in a few other areas of the county, that now there is a permanent government ban on harvesting/eating IRL puffer fish in the entire IRL.

Since I am nowhere close to a scientist, I will just share some links below and refrain from speculating what is “good or bad. ” Nonetheless, I think I can safely say that sometimes beauty and danger walk hand in hand in this magical world of our Indian River Lagoon.

_______________________________________________________

Abstract, Saxitoxin in the IRL, US Food and Drug Administration: (http://www.researchgate.net/publication/250019725_Concentrations_of_Saxitoxin_and_Tetrodotoxin_in_Three_Species_of_Puffers_from_the_Indian_River_Lagoon_Florida_the_Location_for_Multiple_Cases_of_Saxitoxin_Puffer_Poisoning_from_2002_to_2004Sincerely)

Monitoring Toxic Algae and Shellfish in the IRL, FWC, (http://myfwc.com/research/redtide/monitoring/current/indian-river/)

Florida Today: Is the IRL OK for Play? http://www.floridatoday.com/story/news/local/environment/2014/06/14/indian-river-lagoon-ok-play/10527607/)

Dinoflagellate: (http://en.wikipedia.org/wiki/Dinoflagellate)