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Oyster Reef Ecology | On the Reef

Day 5: October Oyster Push- A Change of Plans

by Rob Diaz de Villegas October 27, 2010
by Rob Diaz de Villegas October 27, 2010 2 comments
Rob Diaz de Villegas WFSU-TV

Tuesday, October 26- Tile Team heads to Jacksonville

P1010798_1

The whirring sound, the smell of calcium carbonate dust, the warmth of his face behind the mask and goggles- this is the stuff of David Kimbro's dreams.

IGOR chip- biogeographic 150The WFSU crew stayed the night in St. Augustine to accompany both the Net/ Fish and Tile teams when they headed out at sunrise.  After breakfast, I went out to the lab space (we’re all staying at a research facility very near the reefs they study), and David Kimbro was there, before the sun had made its way out, separating shards of shell with spat on them.  He’d missed all of the field work here up to that point so that this experiment could work.  Until this afternoon, it was all I had seen him do here.  If he was able to focus in on this one aspect of this large an undertaking, it is because Hanna and Tanya have been able to operate independently and pick up the slack.  By the time he actually made it into the field, David followed Tanya’s lead.

Also working hard on this trip are my poor sneakers.  I have an old pair that I designated for my work on this project, shoes I knew I would never wear for anything else.  The reefs in Cedar Key and St. Augustine have torn them up.  I keep stepping in soft mud that hides oysters, or stray clumps cloaked by muddy water.  It might be time to invest in boots.

P1010870_1

There's nothing like the smell of dead fish in the morning.

7:30 AM– Hanna, Tanya, and Cristina went out to retrieve the catch from the gill nets, take sediment samples, retrieve the data loggers, and take some fish stomachs (how else would you know what the predators were eating?).  They also replaced the spat sticks, which were still only attracting barnacles.  Tanya noticed, however, that spat would settle on the rebar below the stick.

A couple of Environmental Scientists from the St. Johns River Water Management System agency kayaked up at some point to watch the proceedings.  They are working with David’s lab to determine why these once commercially viable reefs were overrun and depleted by crown conchs.  The problem seems to be very localized, occurring between Ponce Inlet in New Smyrna Beach and Matanzas Inlet.  David is hoping for more “spinoff projects” like this one, in which he and his lab can use applied science to help specific reef systems.

And while we’re on the topic of predatory snails, Here’s that pic of the Atlantic Oyster Drill:

P1010905_1

Crown conch, tulip snails, and oyster drills heavily populate these Marineland, FL reefs.

2:30 PM– Hanna and Cristina headed to Jacksonville to begin removing clumps of reef with Jacksonville spat on them. But first they were to inspect the house they were renting to see if there was a suitable area to make their Jacksonville spat tiles. That process involves keeping oysters in large tubs of water, prying shells off of the clump, and using a dremel to make the pieces somewhat uniform in size. If I was renting someone a house, I wouldn’t want them doing that in my bathroom. Hanna determined that the house did not have a workable area, causing a shift in their plans. Hanna and Cristina now had to bring the reef segments back to St. Augustine to process. Instead of deploying nets in Jacksonville Wednesday morning, they’ll have to do this in the afternoon after processing the spat all day. And instead of finishing with Jacksonville on Thursday morning, they’ll be there all day (causing David to make his three hour drive home at night).

5:00 PM– David and Tanya retrieve the small fish traps.  A couple of the fish they catch are pretty colorful, I suspect they’re something that once lived in a saltwater aquarium.  They also deployed the tiles into which so much effort had been expended.  It’s a major part of this study, and David is happy to get started on it just five months after that first day in Alligator Harbor.  And it’s still early enough in this three year study that they can tweak the experiment and try it again next year (experiments of this nature don’t always work the first time).

After all the work was done, Tanya made a tasty four-bean vegetarian chili, and everyone enjoyed a relaxed dinner before convening again at 7:30 AM to process more spat.

P1010994_1

David finally makes it out into the field.

Tide Times and height (ft.) for Saint Augustine, October 26, 2010
Low- 8:oo AM (0.3)
High- 2:17 PM (5.2)
Low- 8:41 PM (0.7)
Tide Times and height (ft.) for Jacksonville, October 25, 2010
High- 5:56 PM (0.5)
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biogeographiccoastal ecologycrown conchFlorida State UniversityFSU Coastal and Marine Labmarine biologymarine ecologyNational Science FoundationnatureNSFoysteroyster reefoyster spatperiwinkle snailsroctoberpushSaint Augustinescience
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Rob Diaz de Villegas

Rob Diaz de Villegas is a senior producer for WFSU-TV, covering outdoors and ecology. After years of producing the music program OutLoud, Rob found himself in a salt marsh with a camera, and found a new professional calling as well. That project, the National Science Foundation funded "In the Grass, On the Reef," spawned the award winning WFSU Ecology Blog. Now in its tenth year, the Ecology Blog recently wrapped its most ambitious endeavor, the EcoCitizen Project. Rob is married with two young sons, who make a pretty fantastic adventure squad.

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Day 4: October Oyster Push “Sweet Boat”
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Day 6: October Oyster Push- Home Stretch

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2 comments

Oysters in the news October 28th, 2010 | The Daily Blog Awards October 28, 2010 - 8:10 pm

[…] Day 5: October Oyster Push- A Change of Plans […]

Carroll Garland October 30, 2010 - 7:32 am

Reading about your adventures both culinary and biology related is fascinating! Makes the rest of us armchair biologists learn something. Thanks for keeping Hanna’s family informed! Carroll Garland

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iNaturalist became a part of the WFSU Ecology Blog during the EcoCitizen Project in 2019.  Since then, we’ve used it to help identify the many plants and animals we see on our shoots.  And on the Backyard Blog, we show how it can be used to identify weeds and garden insects, to help figure out what’s beneficial or a possible pest.  Below is the iNaturalist profile belonging to WFSU Ecology producer Rob Diaz de Villegas.

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