Marsh sediment porewater nutrient concentrations [NH4+, NO3-, DOC, TDN] and salinity are reported from Spartina sp. and Typha sp. sites along the Parker River, MA. Porewater peeper poles are used for collection and the poles are located in the vicinity of the marsh water table sites for the Railroad and Typha sites.
Porewater is sampled monthly from May through December. Samples are retrieved from four diffusion sampling poles at two sites, Railroad and Typha, along the Parker River. At each site, one pole is located 4 m from creek edge and another pole is 10 m from creek edge. Samples are retrieved at depths of 10, 25, 50, 75, and 100 cm, and are filtered and partitioned for analysis. Nitrate, NH4, DOC, and TDN concentrations are measured in each sample according to standard laboratory protocols, and salinity is measured using a conductivity probe. Analyses are conducted according to PIE-LTER protocols.
The Railroad site is dominated by Spartina sp and the Typha site is dominated by Typha sp.
NOTES AND COMMENTS: Phosphate was only measured for some 2004 samples.
Porewater is sampled monthly from May through December.
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