One of the reasons that it has not been widely recognized that
much of the decay of leaves of smooth cordgrass takes place in the
standing position, is that on fine clear days, when observers are
most likely to be out in the marsh, leaves of smooth cordgrass are
very dry, so dry that microbial activity cannot occur. But there
is a wetting phenomen that is in effect nearly every night -- the
phenomen is dewset. The beads of water on these cordgrass blades
were photographed on a normal autumn morning. The dew does not
usually evaporate until midmorning, and can provide enough water to
permit substantial rates of fungal growth. Check out the leaf-wetness
data for a site in the SE USA. See Newell
SY, Fallon RD, Cal Rodriguez RM, Groene LC. 1985. Influence of rain, tidal
wetting and relative humidity on release of carbon dioxide by
standing-dead saltmarsh plants. Oecologia 68:73-79; and Newell SY,
Arsuffi TL, Palm LA. 1998. Seasonal and vertical demography of dead
portions of shoots of smooth cordgrass in a south-temperate
saltmarsh. Aquat Bot 60:325-335.