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The spotted seatrout and redfish are seeking the shallow nearshore seagrass habitats at Oslo. <br />There is healthy seagrass growing at Oslo. Various species of macroalgae also grow there and <br />also form indigenous food and habitat needed by various seagrass fish and invertebrate species. <br />The seagrass at Oslo is not being harmed by water running off shell/marl substrates of Oslo Road <br />any more than it is at the thousands of marl, shell and carbonate shorelines throughout south <br />Florida. A term for the white precipitate that forms ephemeral clouds in the water column <br />coming from carbonate sediments is a "whiting", a phenomenon that has received considerable <br />study in Florida and the Bahama Islands. It does not cause the death of seagrass as the County <br />has maintained. All of south Florida is made of this shell and coral substrate and rain running off <br />native Florida sediments is not killing seagrass or we would have no seagrass in south Florida. <br />Why do these fish pick some sites and reject others? This is still under study, but chosen sites <br />must certainly give the fish a survival advantage. Our research and that of others has effectively <br />demonstrated homing in larval and juvenile fish to very specific special locations. The Chair of <br />this Commission, Commissioner O'Bryan, participated in one of my research studies that <br />effectively demonstrated nursery site imprinting in snook and tarpon to areas not even a half acre <br />in size. These studies revealed that present State and Federal aquatic habitat mitigation practice <br />is invalid in protecting regional fisheries. One of the most intensely studied sites was done at <br />Round Island Park across the Lagoon from Oslo. One day we captured 600 juvenile snook at the <br />south culvert, the only culvert in that impoundment at the time. I had a second culvert installed <br />at the north end of the impoundment thinking snook would use it too. They did not. The same <br />observation was made at Jack Island Park in St. Lucie County with up to 3,000 snook captured in <br />and around the north culvert one day, while very few or none were captured at the many other <br />culverts we installed in that impoundment. The snook had been homing in on the chemistry of a <br />specific site long before we arrived. We could not create a snook settlement site. They settled at <br />the same relatively small site year after year at roughly the same time year. There were often <br />may be miles between these valuable nursery sites. Not every mangrove and not every seagrass <br />bed is a nursery site for these important fishery species. However, every mangrove and every <br />seagrass meadow saturates with the prey for these species, mosquitofish, shrimp and pinfish. <br />INDIAN RIVER COUNTY COMMISSIONS AND THE LAGOON: <br />I worked for the Indian River County Commission of Alma Lee Loy and Bill Wodke as the first <br />biologist to survey the natural resources of every spoil island in Indian River County. I am not <br />sure, but I believe some of you were likely in high school, possibly even grade school at that <br />time, 30-40 years ago. I knew, or was personal friends of Commission chairs over the years, Pat <br />Lyons, Maggie Bowman, Fran Adams, Ken Macht, Ruth Stanbridge, Gary Wheeler and others <br />working with them to protect and enhance the aquatic habitats and fisheries of this County and <br />the Lagoon at large. This is the first Commission I have encountered that has ignored some of <br />the best scientific evidence on aquatic ecosystems and fishery needs, at a time when it is critical <br />for the survival of all our regional fisheries. It is also interesting to note that three of the County <br />I02- <br />