Does intertidal vegetation indicate specific soil and hydrologic conditions

Autor: Mike O’Bryon, Courtney T. Hackney, Susan Brady, Marta Boris, Tom Hancock, Crystal Tilton, Charles Dennis, Lynn Stemmy, Eric Barbee
Rok vydání: 1996
Předmět:
Zdroj: Wetlands. 16:89-94
ISSN: 1943-6246
0277-5212
DOI: 10.1007/bf03160649
Popis: Six distinct plant zones were identified within a mesohaline tidal marsh in the Cape Fear Estuary, North Carolina. USA. All six vegetative zones were found within an 18-cm portion of the 1.35-m tidal range. Aerial photographs show that these six zones have existed within the marsh for the past 20 years. A monotypicJuncus roemerianus stand occupied soils with the highest salinity porewater (17 ppt), while stands dominated (>90%) by eitherScirpus robustus orTypha angustifolia were found associated with the least saline soil water (7 ppt) in areas of the marsh least flooded by tidal waters.Spartina cynosuroides dominated areas of the marsh at lowest elevations. In general, Eh was highest in theJuncus zone and lowest in theSpartina alterniflora zone. Four of the six vegetative zones represented distinct physical and chemical environments and could be statistically separated via canonical discriminate analyses. We suggest that established vegetation may be an accurate analog for specific hydrogeomorphic conditions.
Databáze: OpenAIRE
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