In August of 2008, Scott and Toby made a short exploratory trip to Guanaja Island. We assessed the feasibility of restoration and reviewed areas recently planted by local volunteers. We also planted 3000 Red mangrove propagules in test plots. Our review, combined with information from a previous study, verified that the area will require direct hand-planting as apposed to natural, hydrologic recruitment of mangrove propagules. We learned many useful tips from local fisherman Ray Powerey. Ray has planted thousands of red mangrove propagules over the past few years. Mostly in challenging seaward areas with strong wave action. While planting our test plots in the Black Rock Creek area, we decided to divide up our plots into three categories determined by the ripeness of the propagules: Light Green (young), Dark Green (mid) and Dark Brown (full ripe). After returning months later, we found less than 1% survived, apparently due to very heavy crab predation. In subsequent plots in other areas, we found that light green propagules do grow, but their survival percentage is lower. The larger darker colored propagules grow faster and are more durable. Scroll down to see more photos... A mature dark brown propagule. these grow rapidly and have the best chance of survival.
A small Light Green propagule, if picked by accident they are worth planting, but otherwise are best left on the tree to ripen further. | Ray explains what he has learned about propagules and how they can grow up through water depths that are over the propagules even at low tide. A typical Dark Green propagule, these also grow well.
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