Gulf Coast Research Lab  -  Marine Botany

Fig 1: Percent Cover of seagrass species at the 6 survey sites

Chandeleur Islands Seagrasses -
Post Katrina Assessments

SAMPLING METHODS

Seagrass core samples were returned to GCRL for processing. We sampled for the following metrics:

1. Density: counted short-shoots (SS) of each species present.

2. Morphometrics: number of SS per intact individual, internodes on rhizome and SS, leaf length x width, canopy height (max leaf length), number of flowers (Syringodium).

3. Biomass by species: above live, above dead, below, epiphytes

4. Epiphytes were scraped from up to 10 leaves per species, slurry was filtered onto a GF/F (0.7um approx) and dried. Ash free dry weights were recorded after combustion at 500C, 4 hrs to determine % inorganic content.

Fig2: Density of short shoots at 6 survey sites

RESULTS:

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Fig 3: Biomass of 4 seagrass species and macroalgae at the 6 study locations

Fig 4: Epiphytes of 4 seagrass species at the 6 study locations

Fig 5: Percent organic epiphytes and leaves of 4 seagrass species at the 6 study locations

Fig1: Maximum height of short shoots at 6 survey sites