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The Indian River Lagoon Species Inventory
Historic Trends in IRL Seagrasses
A lagoon-wide seagrass monitoring program led by scientists from the St.
Johns River Water Management District is responsible for monitoring
long-term trends in IRL seagrass population status, health, and coverage
trends. Data from this program and associated water quality monitoring
programs indicates that the amount of light reaching the benthic habitat is
the primary factor limiting seagrass coverage in the lagoon. Water column
turbidity, chlorophyll a concentration, and color are the principal
determinants of water clarity in the lagoon, with turbidity being by far
the most important (Christian and Shang 2003).
Christian D and YP Sheng. 2003. Relative influence of various water quality parameters on light attenuation in Indian River Lagoon. Estuarine, Coastal and Shelf Science 57: 961-971.
Morris LJ and RW Virnstein. 2008. The demise and recovery of seagrass in the northern Indian River Lagoon, Florida. Estuaries and Coasts 27:915-922.
Saint Johns River Water Management District (SJRWMD). 2007. Indian River Lagoon, An Introduction to a Natural Treasure. Saint Johns River Water Management District. 36 p.
Virnstein RW, Steward JS, and LJ Morris. 2007. Seagrass Coverage Trends in the Indian River Lagoon System. Florida Scientist 70:397-404.
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