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  • KEY WORDS: Ecosystem management; Coastal zone management; Belize; Hydrology  (1)
  • tidal discharge model  (1)
Document type
Keywords
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  • 1
    Electronic Resource
    Electronic Resource
    Inorganic Sediment Budget for the North Inlet Salt Marsh, South Carolina, U.S.A. (1996)
    Springer
    Mangroves and salt marshes 1 (1996), S. 23-35 
    Details
    ISSN: 1572-977X
    Keywords: sediment flux ; sediment accumulation ; tidal discharge model ; 210Pb dating
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Most salt marshes along the east coast of North America appear to accumulate sediment at a rate sufficient to keep pace with the rise in eustatic sea level and local subsidence. Thus, these marshes must be importing sediment from the coastal ocean and/or the adjacent estuaries. The sediment accumulating in the North Inlet salt marsh, South Carolina, is 80% inorganic, and, based on 210Pb dating, is accreting at a rate of 0.098 g cm−2 yr−1, equal to a 2.7 mm yr−1 vertical sedimentation rate. Tide gauge records show a relative sea level rise of 2.2 to 3.4 mm yr−1, indicating this marsh is maintaining its elevation relative to mean sea level rise. The North Inlet salt marsh has two avenues of sediment exchange: (1) through the tidal inlet to the ocean and (2) through Winyah Bay, the adjoining estuary. Long-term inorganic suspended sediment flux through the inlet is calculated to be a net import of 1.35 kg s−1, based on application of a tidal hypsometric flow model to seven years of daily suspended sediment concentrations. However, the import required to balance relative sea level rise is only 0.80 kg s−1, implying an excess net import of 0.55 kg s−1. The difference between import and accumulation is explained by the progradation of the marsh toward Winyah Bay, a conclusion which is supported by the geomorphology and stratigraphy of the marsh-estuary border. Thus, the North Inlet marsh imports sediment on the average through the tidal inlet, at a rate which allows for both vertical accumulation at a rate approximately equal to the relative sea level rise and also lateral expansion of the marsh.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1025990027312
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hydrological and Oceanographic Considerations for Integrated Coastal Zone Management in Southern Belize (1999)
    Springer
    Environmental management 24 (1999), S. 229-245 
    Details
    ISSN: 1432-1009
    Keywords: KEY WORDS: Ecosystem management; Coastal zone management; Belize; Hydrology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: 9 m3, a volume equal to the basin. During the rainy season, June–September, 84% of the annual discharge occurs, which causes the bay to become brackish. Port Honduras serves as an important nursery ground for many species of commercially important fish and shellfish. The removal of forest cover in the uplands, as a result of agriculture, aquaculture, and village development, is likely to significantly accelerate erosion. Increased erosion would reduce soil fertility in the uplands and negatively affect mangrove, seagrass, and coral reef productivity in the receiving coastal embayment. Alternatively, the conservation of an existing protected areas corridor, linking the Maya Mountains to the Caribbean Sea, is likely to enhance regional sustainable economic development. This study aims to support environmental management at the scale of the “ecoscape”—a sensible ecological unit of linked watersheds and coastal and marine environments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002679900229
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    Paper (German National Licenses)
    Fulltext
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