Red Mangrove Restoration

Samala

New member
Thought some of you might like to see the incredibly technologically advanced methods we have in Florida for restoring red mangrove habitats. (Tongue. In. Cheek.)

Behold, the great PVC!
mangroverestoration3.jpg


In all seriousness, I thought this might be of interest to any plant and mangrove nerds cruising through the boards. Even the scientists havent entirely figured out how to make little red mangrove propagules happy in all conditions.

While the PVC is meant to keep the new propagules stationary until their roots grow into place it can strangle the plant if left in place too long. There are actually some examples of older red mangrove in FL that are being choked by PVC collars. The other downside of using PVC is that some of the local anglers use the poles as rather convenient spots to place their fishing poles. :(

We need something that will hold the plants in place and not pose a threat to the ecosystem/plants should we take too long to retrieve it. Maybe even something biodegradeable (?). Any thoughts?

Some things I think that are good to remember for aquarium husbandry:

- Mangroves like smelly, gross, high organic substrate

- You never find happy, living, red mangrove propagules entirely submerged under water

- Black mangroves and red mangroves both wash up onshore almost throughout the year but you see the most germinating propagules (seeds) in mid to late fall and into the winter season. So perhaps the propagules we see in the hobby shops in early and late spring are leftovers from the previous year's seed bank. They might not be as viable.

- Wild mangrove propagules like sun and lots of it. We might be able to get them to survive off of 40w CFs in our homes but they might grow faster if we had more available light. Then again, its always a trade off with the pesky heat problem.

Germinating black mangroves at the high tide mark:
littlebabymangroves2.jpg


Speaking of which, I've been finding black mangroves in fairly high salinity zones lately. Its got me wondering if they could be put into an aquarium plan after all. Hmmm. Time for more experimentation!

>Sarah
 
"We need something that will hold the plants in place and not pose a threat to the ecosystem/plants should we take too long to retrieve it. Maybe even something biodegradeable (?). Any thoughts? "

How about heavy duty cardboard cylinders or milk cartons? I've known the milk cartons to be used by gardeners and farmers. Being waxed cardboard they will hold up a reasonable length of time, and will degrade in time.
 
Samala... Just a thought here? You mention the mangroves grow in "smelly gross" areas... If I plant a few in crushed coral and dumped some of my skimmate in with it, Would this be a good idea?
 
Thats awesome Samala :)

Lucky, Depends if your goal is clean water or good mangrove. growth.

Samala is right, i used a mix of sand and garden soil (which contained lots of organics, including manure). I added an inch or so of oolitic sand on the top once the mangroves were planted, in hopes it would contain the nutrients.
 
well really at this time I just want them to grow and be pretty. I am not sure... if I plant them like you and Samala, I would not want my tank water flowing through them would I ?
This is where I am confused ??? If I just plant them like an ordinary house plant, Would I just let them stay in standing water. Or just water them heavy to keep the soil/sand wet all the time?
Lucky
 
If you just want them for house plants you could keep them in crushed coral, finer sand, and a wee bit of garden soil. A friend of mine just waters his mangroves in gravel rock whenever the water level gets low. They aren't the happiest mangroves in the world but everytime I visit I have to eat my words of "that will never work, there's no nutrients" to my buddy Dan when he started that project. I think I'm going to have to hold out a few dozen more months before they start to take a dive. ;)

As for running tank water through them.. yes.. its probably not for the faint of heart. I've done it, Triterium has done it, and I can think of a few other examples, but generally having the organics in the soil eventually means a leak of it into the water column and combatting it with skimming.

Y'know the only drawback I can see to attempting to fertilize with a little skimmate is that it might be a tad on the smelly side.

Bill - that is actually a really interesting idea! Another person PM'd me with the note that there are biodegradeable "plastics" out there that are made from potato starch and corn starch and that they might be interesting for this use. But I like yours alot!

Triterium - I thought you'd like this. :) Nice to see you pop in here still!

>Sarah
 
IIRC the starch based "plastics" are supposed to degrade in a matter of days to weeks (under a month) when exposed to environmental conditions in the great outdoors. I'd imagine that would be even faster in an intertidal environment.
 
I was just about to post a retraction for those starchy plastic alternatives. Got off the phone with a supplier who said he would send me a few bits to test in saltwater but he was pretty sure they would break down too quickly. Who knows.. it might be worth a try and if nothing else I'll have cool "green" containers around the house for a little while.

I still like the waxed cardboard idea. Now on to researching its, er, ingredients to see what exactly they're made of. :)

>Sarah
 
Let me know how those tests work out.

For the waxed cardboard, try one of the major dairy or orange juice suppliers.
 
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