Definition of Mean High Water Line

1979 ◽  
Vol 105 (1) ◽  
pp. 111-113
Author(s):  
Gunther Greulich
Keyword(s):  
High Water ◽  
Water Line ◽  
Mean High Water ◽  
Definition Of

Discussion of “Definition of Mean High Water Line”

1981 ◽  
Vol 107 (1) ◽  
pp. 69-69
Author(s):  
Jack E. Guth ◽  
John S. Grimes ◽  
Steacy Hicks ◽  
J.F. Doig
Keyword(s):  
High Water ◽  
Water Line ◽  
Mean High Water ◽  
Definition Of

Dieback of Salt-water Cordgrass (Spartina alterniflora Loisel.) in the Lower Cape Fear Estuary of North Carolina: An Experimental Approach to Re-establishment

1980 ◽  
Vol 7 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Rick A. Linthurst ◽  
Ernest D. Seneca
Keyword(s):  
North Carolina ◽  
Spartina Alterniflora ◽  
Salt Marshes ◽  
Salt Water ◽  
High Water ◽  
The United States ◽  
Salicornia Europaea ◽  
Web Studies ◽  
Mean High Water ◽  
Cape Fear

Spartina alterniflora is the dominant endemic saltmarsh angiosperm along the East and Gulf coasts of the United States. Dieback of S. alterniflora became evident through aerial surveys of the Lower Cape Fear Estuary of North Carolina. The areas affected varied in size, the largest being greater than 40 ha in areal extent. As S. alterniflora productivity losses can subsequently affect the productivity of the estuarine detritus-based food-web, studies were initiated in 1975 to examine the dieback phenomenon, follow successional trends, and determine the recolonization potential of S. alterniflora in dieback-affected salt-marshes.Three S. alterniflora dieback sites in the Lower Cape Fear Estuary were selected for study. Two of the sites, both above mean high-water, were recolonized by Salicornia europaea, Distichlis spicata, Scirpus robustus, Spartina patens, and S. alterniflora. At a third site, found to be below mean high-water, all volunteer plants were of S. alterniflora. Final stabilization of all three sites was mainly by S. alterniflora, with the living standing-crop biomass ranging from 341 to 1,565 g/m2 in September of 1978.Experimental plots within each of the three dieback sites were sprigged with S. alterniflora plants from three sources: (i) sandy dredge-material, (ii) volunteer plants within affected sites, and (iii) unaffected sites near the dieback areas. The success of these sprigs was strongly site-dependent. It is suggested that the plants used for revegetation of dieback sites should be obtained from areas similar to the site that is being transplanted and/or plants which have large rhizome systems.

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