a 1 term" flora provides initial stability for the progenitor fragments of 

 ecad scorpioides and a protective canopy during the summer. Sexual 

 reproduction of the ecad scorpioides was recorded only during one of 

 the three years of study. The morphology and reproduction of ecad 

 scorpioides is compared and contrasted with the attached A. nodosum , 

 as well as with several detached ecads. A gradient of morphology is 

 evident from typical A. nodosum to the extreme "marsh" ecad scorpioides . 

 (A.A.) 



Keywords: salt marshes, ecads, marsh grass, biomass. New Hampshire-Maine 

 estuary system 



V-E-14 



Brinkhuis, B.H. 1976. The ecology of temperate salt-marsh fucoids; 



occurrence and distribution of Ascophyllum nodosum ecads. Marine 



Biology 34:325-338. 



The distribution of several free-living Ascophyllum nodosum ecads, 

 including scorpioides and mackaii , in a temperature salt marsh is 

 described. Morphological characterization of these ecads by the presence 

 or absence of air bladders and reproductive receptacles, and size 

 and shape of fronds, indicated that several free-living forms occur 

 throughout the marsh. Plants resembling the ecad mackaii were more 

 closely associated with exposed areas along the low-tide regions, 

 while scorpioides- type ecads prevailed on the Spartina alterniflora- 

 dominated marsh banks and flats in the middle and upper intertidal 

 regions of the marsh. Maximum biomass of ecads occurred during the 

 spring months in the absence of S^. alterni flora , whereas minimum ecad 

 biomass was associated with maximum S^. alterniflora densities in the 

 late summer and fall months. Morphological differentiation of dwarf- 

 type ecads was related to environmental components other than exposure 

 to low and/or fluctuating salinities. (A.A.) 



Keywords: salt marshes, fucoids, ecads, food habits 



V-E-15 



Brinkhuis, B.H., and R.F. Jones. 1976. The ecology of temperate salt- 

 marsh fucoids; in situ growth of transplated Ascophyllum nodosum ecads. 

 Marine Biology 34:339-348. 



Growth, in terms of length, weight, and number of branches and/or 

 dichotomies, in transplanted specimens of Ascophyllum nodosum ecad 

 scorpioides in a temperate salt marsh is described. The ecad 

 scorpioides , when transplanted from its characteristic habitat on 

 the mid-intertidal , Spartina al terniflora- dominated, marsh flats 

 to a location near mean low-water, developed characteristics normally 



272 



