Floodplain surficial soil samples (10 cm depth) were collected from 12 streams in the urbanized Piedmont region of northern Virginia, representing a chronosequence of time (1-10 yrs) since stream restoration. In addition, 3 unrestored urban streams and 3 low impervious surface cover reference streams were measured. The samples were analyzed for total carbon (TC), total nitrogen (TN) and total phosphorus (TP) storage, whereas carbon mineralization potential and equilibrium phosphorus concentration (EPC0) were measured as metrics of nutrient and carbon loss. Samples also were analyzed for soil moisture, pH, particle size, organic matter content, and degree of phosphorus saturation.

Chemical and physical attributes, rates of deposition, erosion, and mineralization of bank and floodplain sediments and soils from five study sites in the Smith Creek watershed between 2012 and 2015.

Input and release of phosphate, nitrate, and ammonium measured using stacked ion-exchange resin bags on top of soil in floodplains along Pocomoke River, Maryland, in order to evaluate the effectiveness of floodplain reconnection on water quality functions.

Input and release of phosphate, nitrate, and ammonium measured using stacked ion-exchange resin bags on top of soil in floodplains along Pocomoke River, Maryland, in order to evaluate the effectiveness of floodplain reconnection on water quality functions.

The dataset represents the results of floodplain soil samples collected in Navigation Pool 8 of the upper Mississippi River. The objective of the research was to assess the changes in soil chemistry and nutrient transformation at floodplain forest sites in the presence or absence of invasive reed canarygrass (RCG- Phalaris arundinacea) and determine if the RCG effect was modified by the frequency of inundation of the flood plain soils. The data are structured in a 2x4 factorial experimental design, Factor 1, the presence or absence of RCG in floodplain forest landcover and Factor 2, four levels of flood inundation frequency (0.25-0.32, 0.32-1.35, 1.35-2.35, and 2.35-4 events per year). Soil core samples were collected at 6 locations (n=6) by 2 landcovers and 4 inundation frequencies for a total of 48 sites in the June post flood period and again in August of 2019. Rates of biogeochemical transformation of nitrogen was determined for each site. Soil characteristics, Mehlich-3 metals (Al, Ca, Cu, Fe, K, Mn, Mg, Na, P, and Zn), Phosphorus (P), MgCl2 extracted P, carbon, nitrogen, nitrate-nitrite, exchangeable ammonium, and particle-size of the soil were also measured. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

The dataset represents the results of floodplain soil samples collected in Navigation Pool 8 of the upper Mississippi River. The objective of the research was to assess the changes in soil chemistry and nutrient transformation at floodplain forest sites in the presence or absence of invasive reed canarygrass (RCG- Phalaris arundinacea) and determine if the RCG effect was modified by the frequency of inundation of the flood plain soils. The data are structured in a 2x4 factorial experimental design, Factor 1, the presence or absence of RCG in floodplain forest landcover and Factor 2, four levels of flood inundation frequency (0.25-0.32, 0.32-1.35, 1.35-2.35, and 2.35-4 events per year). Soil core samples were collected at 6 locations (n=6) by 2 landcovers and 4 inundation frequencies for a total of 48 sites in the June post flood period and again in August of 2019. Rates of biogeochemical transformation of nitrogen was determined for each site. Soil characteristics, Mehlich-3 metals (Al, Ca, Cu, Fe, K, Mn, Mg, Na, P, and Zn), Phosphorus (P), MgCl2 extracted P, carbon, nitrogen, nitrate-nitrite, exchangeable ammonium, and particle-size of the soil were also measured. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

This data set presents ecosystem geomorphic and soil attributes, sediment and nutrient loading rates, and rates of nutrient biogeochemistry processes, including denitrification and N and P mineralization, in floodplains of urban restored streams. The restored streams were located in the Charlotte, North Carolina, metropolitan area and were studied from 2012-2013.

Geospatial coordinates of plots.

Geospatial coordinates of plots.

This data set includes tables providing location, environmental, vegetation, soils, and carbon sampling data collected in 2015 and 2016 at vegetation sampling units on restored areas and other habitats at sites in northeast Indiana, USA. "Sample_units.csv" provides location, environmental, soil physical and chemical properties, and photographs for each sample location. "Subplot_ground_flora.csv" provides subplot estimates of cover for each ground flora species in each each subplot; "Plot_ground_flora.csv" provides plot-level estimates of cover for each ground flora species in each plot. "Woody_stems.csv" provides diameter at breast height measurements and height estimates for woody species with measurable diameters at 1.4 m. F"Downed_wood_less_than_3_in_diameter.csv" provides tallies of intercepts of small diameter downed wood along portions of 2 50 foot transects at each plot; "Downed_wood_greater_than_3_in_diameter.csv" records species, diameter and length of downed woody stems greater than 3 in diameter alonog the entire transects.