Atmospheric nitrogen deposition in south-east Scotland: quantification of the organic nitrogen fraction in wet, dry and bulk deposition
Gonzalez Benitez, Juan M
Cape, J Neil
Heal, Mathew R
van Dijk, Netty
Vidal Diaz, Alberto
Water soluble organic nitrogen (WSON) compounds are ubiquitous in precipitation and in the planetary boundary layer, and therefore are a potential source of bioavailable reactive nitrogen. This paper examines weekly rain data over a period of 22 months from June 2005 to March 2007 collected in 2 types of rain collector (bulk deposition and “dry+wet” deposition) located in a semi-rural area 15 km southwest of Edinburgh, UK (N 55°51'44'', W 31°12'19''). Bulk deposition collectors are denoted in this paper as “standard rain gauges”, and they are the design used in the UK national network for monitoring precipitation composition. “Dry+wet” deposition collectors are flushing rain gauges and they are equipped with a rain detector (conductivity array), a spray nozzle, a 2-way valve and two independent bottles to collect funnel washings (dry deposition) and true wet deposition. On average, for the 27 weekly samples with 3 valid replicates for the 2 types of collectors, dissolved organic nitrogen (DON) represented 23% of the total dissolved nitrogen (TDN) in bulk deposition. Dry deposition of particles and gas on the funnel surface, rather than rain, contributed over half of all N-containing species (inorganic and organic). Some discrepancies were found between bulk rain gauges and flushing rain gauges, for deposition of both TDN and DON, suggesting biological conversion and loss of inorganic N in the flushing samplers.
Showing items related by title, author, creator and subject.
Kelly, Magnus Peter Carrington (The University of Edinburgh, 2019-07-03)Peatlands cover between 10 – 15 % of the UK landmass, yet contain 50 % of the UK soil carbon store. This is more than any other ecosystem and makes them the most important carbon store in the UK. Peatlands have been ...
Law, J.T. (The University of Edinburgh, 1971)
Brooks, Clive L. (The University of Edinburgh, 1976)The objective of this thesis is the elucidation of the characteristics and chronology of vegetational sequences that have accompanied changes in sea -level and climate in the western Forth valley during the Late - Quaternery.