01649nas a2200205   4500008004100000245009700041210006900138300001300207490000700220520095600227653000901183653001701192653002101209653001501230653002301245653002201268100001801290700002001308856011501328       1993                        eng d00aThe effect of fire on gas exchange and aboveground production in Spartina pectinata wetlands0 aeffect of fire on gas exchange and aboveground production in Spa  a299 -3030 v133 aPhotosynthetic and growth responses ofSpartina pectinata were compared in annually and biennially burned wetlands in a northeastern Kansas tallgrass prairie. Photosynthetic CO2 uptake was consistently higher inSpartina pectinata in annually burned wetlands, and there was a seasonal difference in maximum photosynthetic rates. Plants in annually burned wetlands reached a maximum photosynthetic rate of 38.2 μmol m−2 s−1 in late spring, while maximum photosynthesis in plants of biennially burned wetlands was 28.6 μmol m−2 s−1 in late summer. Culm density in these wetlands was not affected by fire; however, aboveground biomass production, inflorescence density and plant height at anthesis were significantly greater in annually burned wetlands. These results indicate thatSpartina pectinata may be a fire-dependent species, with post-fire responses similar to the dominant grasses in tallgrass prairie as well as otherSpartina congeners.10afire10agas exchange10aprairie wetlands10aproduction10aSpartina pectinata10atallgrass prairie1 aJohnson, S.R.1 aKnapp, Alan, K.  uhttp://knz.lternet.edu/content/effect-fire-gas-exchange-and-aboveground-production-spartina-pectinata-wetlands