LTER GCE - Benthic chloro. concent and gross oxygenic photosynthesis rates in surficial est. intertidal seds. at sites on Sapelo Isle. from June and August 2002

Seasonal patterns of estuarine creek-bank and intertidal marsh benthic
chlorophyll and gross oxygenic photosynthesis were investigated at several
sites on Sapelo Island and the Satilla River in coastal Georgia. Benthic
chlorophyll were measured in the bulk surface centimeter depth of sediment.
Gross oxygenic photosynthesis rates were integrated over 100 um resolution
measurements below the sediment water interface using oxygen microelectrodes.
Several relatively pristine sites on Sapelo Island (Moses Hammock, Dean Creek
and Marine Institute) and a presumably heavily impacted site (Dover Bluff) show
similar levels of chlorophyll concentration and photosynthesis rate across bank
and marsh zones with higher photosynthetic biomass and activity in the spring
season. Nutrient inputs to these study sites are also suggested as a control
on gross oxygenic photosynthesis rates as evidenced by a relationship between
photosynthesis rate and land-use.

Overall bounding box describing the geographic region within the Georgia
Coastal Ecosystems LTER study domain represented in data set ALG-GCED-0304b