Dissolved organic nitrogen (DON)
Dissolved organic nitrogen : an overlooked pathway of nitrogen loss from agricultural systems?
... of dissolved organic nitrogen (DON) into the groundwater has been recognized for more than 100 yr, it is often ignored when total N budgets are ...environment. Dissolved organic N ...
9
Fate and Characteristics of Dissolved Organic Nitrogen through Wastewater Treatment Systems
... 2.2. Biodegradable Dissolved Organic Nitrogen 2.2.1. Definition of BDON and its measurement BDON is a biodegradable part of DON that can be mineralized by bacteria when the optimum conditions are ...
147
Technical Note: Comparison between a direct and the standard, indirect method for dissolved organic nitrogen determination in freshwater environments with high dissolved inorganic nitrogen concentrations
... on dissolved organic nitrogen (DON) in aquatic systems with high dissolved inorganic nitrogen (DIN, the sum of NO − 3 , NO − 2 and NH + 4 ) concentrations is of- ten hampered by high ...
12
Importance of dissolved organic nitrogen in the north Atlantic Ocean in sustaining primary production: a 3-D modelling approach
... of dissolved organic matter can introduce a similar amount of nutrient as the N 2 -fixation ...The dissolved organic nitrogen and phosphorus, and the variable C/N/P for phytoplankton ...
19
Dissolved Organic Nitrogen Inputs from Wastewater Treatment Plant Effluents Increase Responses of Planktonic Metabolic Rates to Warming
... of organic matter, and excessive oxygen ...the organic fraction of the nutrient ...of dissolved organic nitrogen (DON) frequently exceeds that of inorganic nitrogen in both ...
10
Dissolved organic nitrogen in the river test and estuary
... Before fractionating river water according to molecular size, it was important to define clearly the nominal molecular weight cut-offs associated with the 1 kDa and 30 kDa ultrafiltration cartridges. A series of ...
260
Dinitrogen fixation and release of ammonium and dissolved organic nitrogen by Trichodesmium IMS101
... as dissolved organic nitro- gen (DON) and/or ammonium (NH 4 + ...of dissolved combined nitrogen (N) by Trichodesmium, we conducted a comprehensive analysis of N 2 fixation and the production ...
10
Benthic fluxes of dissolved organic nitrogen in the lower St. Lawrence estuary and implications for selective organic matter degradation
... compromise the use of C / N ratios of sedimentary OM as basic OM source indicator. Both in the lower estuary and in the gulf, DON contributes significantly to the overall dissolved N exchange between the sediments ...
14
Effect of fertilization on composition and spatial distribution of dissolved organic nitrogen in paddy soil microbial systems
... with organic matter content, H' and a significant nega- tive correlation with pH in both fertilization treat- ments, but no significant correlation with TN of the soil, E', soil bulk density and total ...higher ...
7
Improved ultraviolet photo-oxidation system yields estimates for deep-sea dissolved organic nitrogen and phosphorus
... Recovery of model compounds A traditional way to determine oxidation ef ficiency/comple- tion is by the extent to which known organic compounds can be recovered in the form of their mineralized oxidation prod- ...
15
Effect of long-term fertilization on soil aggregate-associated dissolved organic nitrogen on sloping cropland of purple soil
... exogenous organic material affected soil microbial activity, thereby influencing soil organic nitrogen turnover (Marschner and Kalbitz ...exogenous organic matter for MF treatment added into ...
6
A nitrogen budget for the Strait of Georgia, British Columbia, with emphasis on particulate nitrogen and dissolved inorganic nitrogen
... 3.5 Dissolved organic nitrogen (DON) As in the case of the N budget by Mackas and Harrison (1997), we have not considered dissolved organic nitrogen (DON) in the dissolved ...
16
Spatial distribution of soils determines export of nitrogen and dissolved organic carbon from an intensively managed agricultural landscape
... besides organic soils along the ...Total dissolved nitrogen (TDN), nitrate (NO − 3 ), am- monium nitrogen and dissolved organic carbon (DOC) con- centrations were measured, and ...
13
Dissolved organic carbon and dissolved nitrogen in soil under different fertilization treatments
... of dissolved organic carbon (DOC) and dissolved nitrogen (DNt) down to deeper layers of the soil ...labile organic matter in the 0–25 and 25–50 cm layers of ...
9
Nitrogen effects on the pelagic food web are modified by dissolved organic carbon
... The aim of this study was to assess the effects of enhanced inorganic N availability on total pelagic energy mobilization (PEM, i.e. food quantity), food chain length (i.e. the PP:BP [r] ...
16
Nitrogen and dissolved organic carbon (DOC) losses from an artificially drained grassland on organic soils
... The NO 3 –N concentration patterns are strongly influenced by the presence of tile drains in the catchment, which di- rectly discharge water into the ditches. First of all, ongo- ing drainage causes peat mineralisation ...
15
Importance of within-lake processes in affecting the dynamics of dissolved organic carbon and dissolved organic and inorganic nitrogen in an Adirondack forested lake/watershed
... of dissolved organic matter dynamics in forested watersheds has been shown in various studies ...of nitrogen as a nutrient by the biota during warmer periods of the year (Bischoff et ...
15
Patterns of dissolved organic carbon and nitrogen fluxes in deciduous and coniferous forests under historic high nitrogen deposition
... in laboratory and field manipulation experiments in which mineral nitrogen forms are artificially added to the ecosys- tem. However, these manipulation experiments all cover a limited time scale that will often ...
16
dissolved organic carbon
... Our major objectives are to determine whether plant pigments can be used as effective biomarkers to trace the dominant sources of HMW DOC in the Gulf of Mexico,[r] ...
7
The marine biogeochemistry of dissolved organic carbon and dissolved organic nutrients in the Atlantic Ocean
... of organic compounds, including the commonly used calibration compounds potassium hydrogen phthalate and ...total organic carbon–nitrogen chemiluminescence detector (TOC-NCD) ...
172