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Raymond L. Hinkle, URS Corp. Kenneth A. Strait, PSEG Services Corp.

An Analysis of the Variability in Tidal Marsh Vegetative cover and Production at Reference Marshes on Delaware Bay 1996 – 2005. Raymond L. Hinkle, URS Corp. Kenneth A. Strait, PSEG Services Corp. Brenda Q. Evans, PSEG Services Corp. PSEG Estuary Enhancement Program Wetland Restoration.

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Raymond L. Hinkle, URS Corp. Kenneth A. Strait, PSEG Services Corp.

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  1. An Analysis of the Variability in Tidal Marsh Vegetative cover and Production at Reference Marshes on Delaware Bay 1996 – 2005 Raymond L. Hinkle, URS Corp. Kenneth A. Strait, PSEG Services Corp. Brenda Q. Evans, PSEG Services Corp.

  2. PSEG Estuary Enhancement ProgramWetland Restoration • Diked Salt Hay Farm Sites (NJ) • Dennis Township • Maurice River Township • Commercial Township • Phragmites Dominated Sites (NJ & DE) • Alloway Creek Watershed • Cohansey River Watershed • Cedar Swamp • The Rocks

  3. Reference Marshes • Moores Beach West • Reference for Previously Diked Sites • Mesohaline Marsh • Naturally Restored (1972) • 1,257 Acres • Mad Horse Creek • Reference for Phragmites Dominated Sites • Oligohaline Marsh • No Prior Disturbances • Mature Marsh Community • 3,942 Acres

  4. Vegetation Cover Mapping 1996 - 2005 • Based on Annual CIR/True Color Photography • Acquired in Peak Season • Georeferenced Orthophotos • Vegetation Cover Categories • Spartina spp. / Other Desirable Marsh Vegetation • Phragmites australis Dominated Vegetation • Non-vegetated Marsh Plain • Internal Water Areas • Open Water • Each Category Comprised of Numerous Cover Types

  5. Mad Horse Creek 2005 Orthophotograph

  6. Mad Horse Creek 2005 Orthophotograph

  7. Mad Horse Creek 2005 Orthophotograph

  8. Marsh Production sampling 1996 - 2005 • Based on Field Data Collection from Plots and Transects • Acquired in Peak Season • Individual Species Determinations • Samples Processed to Yield grams dry weight/ square meter

  9. Conclusions • PSEG Estuary Enhancement Program has provided 10-year Reference Marsh Database • Variability in both Coverage Primarily Related to Phragmites Expansion • Success of Restoration Sites can be Evaluated on the Basis of these Data

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