. An ecological characterization of Coastal Maine (north and east of Cape Elizabeth). Coastal ecology -- Maine. Variations in organic matter, mineral fractions, and waterlogging (saturation of sediments) determine palustrine soil types, which in turn determine plant species. At present there are no data available detailing soil types in palustrine wetlands in coastal Maine. BIOGEOCHEMICAL CYCLES AND BUDGETS Biogeochemicals (, nitrogen, phophorus, potassium) are those substances derived from the earth's crust, hydrosphere, and atmosphere that are essential to life processes. Because the sup
. An ecological characterization of Coastal Maine (north and east of Cape Elizabeth). Coastal ecology -- Maine. Variations in organic matter, mineral fractions, and waterlogging (saturation of sediments) determine palustrine soil types, which in turn determine plant species. At present there are no data available detailing soil types in palustrine wetlands in coastal Maine. BIOGEOCHEMICAL CYCLES AND BUDGETS Biogeochemicals (, nitrogen, phophorus, potassium) are those substances derived from the earth's crust, hydrosphere, and atmosphere that are essential to life processes. Because the supply of biogeochemicals is limited sometimes, the availability of these substances to organisms is dependent upon continuous cycling. Low availability of biogeochemicals (nutrient limitation) usually results in low populations of organisms and low biological productivity. Peat, which is formed in many coastal Maine palustrine wetlands, has an excep- tionally high water absorption and ion exchange capacity (Moore and Bellamy 1974). Biogeochemical ions from palustrine waters are bound to the peat and held strongly by physiochemical forces. These ions, once bound, are not eas- ily leached. As peat formation progresses the bound ions may be buried below the reach of plant roots and become fossilized. Respiration. Microorganisms Oxidation of Peat ( by Combustion) C-Compounds in Peat Figure 8-6. Cycling of carbon in a palustrine wetland (Moore and Bellamy 1974). 3-18. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original U. S. Fish and Wildlife Service; Fefer, Stewart I; Schettig, Patricia A. Newton Corner, Mass. : Department of the Interior, U. S. Fish and Wildlife Service, Northeast Region
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