Spartina alterni flora, I m plots 



E 400^ 

 -5 200 







M 



J A 

 1977 







Q Controls 

 ▲ Fe 

 O Cu 

 ■ Cr 



wt/m^) 



Figure 29. Aboveground biomass (g dry wt/m'") of Spartina alterniflora in 

 experimental plots treated with soluble iron, copper, and chromium at Great 

 Sippewissett Marsh, Cape Cod (Giblin et al. 1980). 



closed-system agriculture of a sort, 

 though with a long time lag; sewage 

 treatment is as much a part of our 

 present "life support system" as salt 

 hay production ever was. Perhaps 

 someday, after a hundred years or so 

 of nostalgia have accumulated. New 

 Englanders may look at photographs of 



spray nozzles standing in the marshes 

 with the same feelings we have now 

 in looking at the old salt hay 

 staddles and gundalows. Perhaps they 

 will be as puzzled as I was when 

 I came from the south and first saw 

 the rocks sitting out in the grass of 

 a New England marsh. 



59 



