Abstract
Results of a one-year evaluation of aboveground production of four dominant salt-marsh angiosperms show a distinctly higher level of production as compared with reported results for similar studies of salt-marsh vegetations in The Netherlands. Net aboveground production estimates based on production of both living and dead matter varied considerably depending on how the data were computed: Spartina anglica: 1162 to 1649 g m2 yr1; Triglochin maritima: 568 to 783 g m2 yr1; Halimione portulacoides: 790 to 1434 g m2 yr1; Elytrigia pungens: 474 to 878 g m2 yr1. Aboveground production estimates, using a paired plot method, are also strongly dependent on the computation of the data and ranged for Spartina anglica from 2139 to 2659 g m2 yr1 and for Elytrigia pungens from 1416 to 1787 g m2 yr1. Evaluation of the results of the production estimates suggested that the actual aboveground production is best approached using a paired plot method.
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