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Stratigraphie and Ecophysical Characterizations of Salt Pools: Dynamic Landforms of the Webhannet Salt Marsh, Wells, ME, USA
Kristin R. Wilson, Joseph T. Kelley, Arie Croitoru, Michele Dionne, Daniel F. Belknap and Robert Steneck
Estuaries and Coasts
Vol. 32, No. 5 (SEPTEMBER 2009), pp. 855-870
Published by: Coastal and Estuarine Research Federation
Stable URL: http://www.jstor.org/stable/40663590
Page Count: 16
You can always find the topics here!Topics: Salt marshes, Marshes, Estuaries, Vegetation, Peat, Sediments, Aerial photography, Signatures, Riverbanks, Statistical variance
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Salt pools are water-filled depressions common to north-temperate salt marshes. In Wells, ME, USA, cores reveal a unique salt pool signature consisting of watersaturated dark-gray mud often containing fragments of Ruppia maritima. Cores through pool sediment reenter salt marsh peat, not tidal flat sediment, demonstrating that most pools are of secondary origin. A principal component analysis of attribute data collected from 119 pools defines three distinct pool types: those with (1) surrounding highmarsh vegetation and thick heavily undercut banks (40% of the variance), (2) surrounding low-marsh vegetation and thicker slightly undercut banks (18% of the variance), and (3) surrounding low-marsh vegetation and less thick moderately undercut banks, containing R. maritima and a surficial drainage (15% of the variance). Cores and spatiotemporal analyses of aerial photographs between 1962 and 2003 reveal dramatic salt marsh surface dynamism suggesting that salt pools influence the geomorphological evolution of coastal marshes.
Estuaries and Coasts © 2009 Coastal and Estuarine Research Federation