Table 2. Primary production by benthic niicroalgae in 

 some temperate intertidal and shallow subtidal habitats. 



Area 



Production 

 gC/m2/yr 



Reference 



Danish Wadden Sea 

 Dutch Wadden Sea 

 False Bay, Washington^ 

 Ythan estuary, Scotland 

 Southern New England shoals 



115-178 

 35-435 



143-226 

 31 

 81 



Gr0ntved 1962 



Cadee and Hegeman 1 974 



Pamatmat 1968 



Leach 1970 



Marshall et al. 1971 



a 14 



Estimated by oxygen method, all others C. 



Table 3. Phytoplankton primary production in some temperate estuarine areas. 



Area 



Long Island Sound 



St. Margaret' s Bay, 

 Nova Scotia 



Loch Etive, Scotland 



Wadden Sea, Netherlands 



Ems estuary, Netherlands 



Grevelingen estuary, 

 Netherlands 



Marsdiep Inlet, western 

 Wadden Sea, Netherlands 



Estimated by oxygen method, all others C. 



16 



