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Showing posts with the label Jenn Sweatman

From Swimming with Seagrasses to Statistics

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Somewhere down the road ecology evolved from this: To something like this:

Epiphanies in Ecology

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For Long-Term Ecological Research (LTER) research in the Seagrass Ecosystems Lab, we venture out into Florida Bay every two months to do a survey of the submerged aquatic vegetation (seagrasses and macroalgae).   As I mentioned in my last post ( Florida Bay:  Beneath the Surface ) Florida Bay is a honeycomb of basins, which creates different habitat types.   These different habitats, specifically the type and density of vegetation on the floor and sediment type (and many other factors that are beyond the scope of this post), attribute to the color of the water.   In a single LTER trip, we see water ranging from deep blue to teal, green, and even brown!    After 2 years of running the LTER project for our lab, I am still amazed by the dynamic nature of Florida Bay on the surface and below.

Florida Bay: Beneath the Surface

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Florida Bay consists of mud banks so intertwined it takes an experienced boater (or a great GPS chart tracker, if you’re me) to successfully navigate across the bay.   Because flow is somewhat restricted by these mud banks, the basins have developed into unique habitats making each dive of the FCE-LTER seagrass sampling project quite different.   At each of the LTER sites within Florida Bay, we estimate percent cover of all seagrass species and many calcareous green algal species, as well as red, brown, and other green algae.   We monitor water quality over time via nutrient analyses in seagrass and calcareous green algal tissue, and we collect data on salinity, temperature, light penetration, and water turbidity.   Data are located at www.fiu.edu/~seagrass .