01261nas a2200157   4500008004100000245009000041210006900131300001300200490000700213520068300220653002200903100001800925700001900943700002000962856012100982       1987                        eng d00aCanopy rainfall interception and throughfall in burned and unburned tallgrass prairie0 aCanopy rainfall interception and throughfall in burned and unbur  a267 -2710 v323 a<p>Interception of precipitation by grass canopies in annually burned and unburned tallgrass prairie was measured for individual precipitation events from 1983 to 1984. Seasonal patterns of interception closely reflected differences in grass canopy development throughout the growing season in burned but not unburned prairie. Mean interception for the study period was 38 and 19% for unburned and burned prairie, respectively, indicating tht througfall volume in burned prairie was approximately 1.3 times that of unburned prairie on an annual basis. Thus, water availability for plant uptake may be initally higher in burned prairie, especially early in the growing season</p>10atallgrass prairie1 aGilliam, F.S.1 aSeastedt, T.R.1 aKnapp, Alan, K.  uhttp://lter.konza.ksu.edu/content/canopy-rainfall-interception-and-throughfall-burned-and-unburned-tallgrass-prairie01889nas a2200133   4500008004100000245011500041210006900156300001300225490000600238520134100244653002201585100001801607856013001625       1987                        eng d00aThe chemistry of wet deposition for a tallgrass prairie ecosystem: inputs and interactions with plant canopies0 achemistry of wet deposition for a tallgrass prairie ecosystem in  a203 -2170 v43 a<p>The chemistry and nutrient inputs of wet deposition, and the N chemistry of throughfall, were characterized for a tallgrass prairie in north-central Kansas. Dominant ions in wetfall were NH4+, Ca2+, H+, NO3-, and SO2-4; weighted mean pH was 4.79. Principal sources of ions appeared to be natural emissions and wind-blown soils. Concentrations of NO3--N, NH4+-N and organic N in wet deposition were 0.31, 0.30, and 0.17 mg/L, respectively, resulting in N inputs of 2.5, 2.5, and 1.4 kg*ha- 1*yr-1. Comparisons with bulk precipitation suggested that at least 50% of atmospheric N inputs were from dry deposition. Concentrations of NO3--N, NH4+-N, and organic N in unburned prairie throughfall were 0.27, 0.28, and 1.28 mg/L, and in burned prairie throughfall were 0.33, 0.37, and 0.91 mg/L, respectively. The prairie canopy intercepted up to 48% of incident precipitation. Lower inorganic N and higher organic N concentrations in throughfall relative to wet deposition probably resulted from leaf uptake of N and immobilization by microbes associated with the standing dead plant materials of the prairie canopy. The removal of these materials by fire is important in maintaining N availability for tallgrass prairie. Much of the N immobilization appeared to have been of N that was supplied to the prairie canopy by dry deposition</p>10atallgrass prairie1 aGilliam, F.S.  uhttp://lter.konza.ksu.edu/content/chemistry-wet-deposition-tallgrass-prairie-ecosystem-inputs-and-interactions-plant-canopies