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Research interests 1. Biogeochemical cycles, especially carbon and within aquatic systems.
2. Aplications of stable isotope analyses to biogeochemical cycling.
3. Stoichiometry of natural systems.
4. Continuous data-logging of water chemistry parameters.
My work is largely interdisciplinary and includes collaboration with scientists in ecology, botany, environmental science and hydrology.
Current research In October 2007 I completed a NERC Advanced Fellowship: “Under what conditions do rivers acts as a net sink or source of atmospheric CO2 ?” (2002-2007). The focus of my Fellowship research wasto consider carbon cycling of major riverine species (gaseous, dissolved inorganic, dissolved organic and particulate organic) in a discharge-related context, using a relatively pristine catchment as a case study. Isotopic characterisation is a key analytical tool for my research.
I have maintained an interest in carbon cycling, firstly through environmental controls on biological production in methane, then as an energy flow in ecological studies, and now in budgetary constraints and process recycling in lotic and lentic systems. Previous research on the influence of peatland gas production on peatland hydrology, on field vegetation respiration studies and on freshwater invertebrate functional plasticity reflects the diversity of my interests in the carbon cycle. Past EU funding addressed the importance of fishery discards in seabird diet.
Current fully funded research includes the following: i) quantifying carbon fluxes from freshwater aquatic systems in the Amazon (as part of the NERC consortium grant, Amazonica). Shortly joining me to work on this project will be Dr. Yoko Ishida; ii) CLAD: Carbon Landascapes and Drainage - this will integrate stakeholders with academics to exchange knowledge on the loss of carbon from terrestrial landscapes to drainage system. Seeking funding for this network arose from my research programme to to consider the impact of the construction of Europe's largest on-shore windfarm, Whitelee, on carbon and nutrient export in the catchment drainage systems. The network facilitator is Dr. Simon Drew. Please contact me if you are interested in finding out more about either of these projects.
I currently co-supervise three Ph.D. students, all of whom are carrying out research relevant to the carbon cycle:
1. Helen Murray (2007-10). The sustainabilty of peatland soils: the impact of disturbances on losses of carbon and nutrient enrichment in the receiving waters. Funded by SAGES.
2. Firdaus Hamzah (2008-11) Long term data records.
3. Mark Speed (2007-10) Landscape influences on patterns of water movement in a large basin. Funded by The Leverhulme Trust, based at Aberdeen University.
Recently completed students include
1. Adrian Bass (2004 - 8) The contribution of the microbial loop to carbon cycling in lakes: a case study using Loch Lomond. Funded by NERC.
2. Stephanie Evers (2003 - 7) The role of light in biodiversity in forested catchments. Funded by Bell College, the Forestry Commission and Scottish Natural Heritage.
I am a member of the American Geophysical Union (Biogeochemistry), the American Society for Limnology and Oceanography, and the British Ecological Society
Recent publications | View all publications >> Gulliver P., Waldron S., Scott E.M. and Bryant C.L. 2010 The effect of storage on the radiocarbon, stable carbon and nitrogen isotopic signatures and concentrations of riverine DOM. Radiocarbon v.52, 2–3, 1113–1122 Waldron S., Flowers H., Arlaud C., Bryant C., and McFarlane S. 2009. The significance of organic carbon and nutrient export from peatland-dominated landscapes subject to disturbance, a stoichiometric perspective. Biogeosciences .V6, 363-374 Tetzlaff D. Soulsby C., Waldron S., Malcolm I.A., Bacon P.J., Dunn S. and Lilly A. 2007. Conceptualisation of runoff processes using tracers and GIS analysis in a nested mesoscale catchment. Hydrological Processes, v.21, 1289-1307. doi:10.1002/hyp.6309 >> Tetzlaff D. Waldron S., Brewer M.J. and Soulsby C., Dunn S. 2007. Assessing nested hydrological and hydrochemical behaviour of a mesoscale catchment using continuous tracer data. Journal of Hydrology v.336, 430-443 doi:10.1016/j.jhydrol.2007.01.020 >> Waldron S., Scott M.and Soulsby C. 2007. Stable isotope analysis reveals lower-order river dissolved inorganic carbon pools are highly dynamic. Environmental Science and Technology.41 (17): 6156-6162
doi:10.1021/es0706089 >> Soulsby C., Tetzlaff D. Rodgers P., Dunn S. and Waldron S. 2006. Runoff processes, stream water residence times and controlling landscape characteristics in a mesoscale catchment: an initial evaluation. The Journal of Hydrology, 325, 197-221. doi:10.1016/jhydrol.2005.10.024. >> Soulsby C., Tetzlaff D., Dunn S.M. and Waldron S. 2006. Invited commentary: Scaling up and out in runoff process understanding: insights from nested experimental catchment studies. Hydrological Processes, v.20, 2461-2465. Recent research grants | View all grants >> Waldron S. 20011-2013. PI of WP2 for United Kingdom Lake Ecological Observatory: UKLEON, GU award of £144,730 (FEC: £179,572, NERC). Lead-Investigator: Dr. I. Jones (CEH Lancaster). Waldron S. 20011-2015. Studentship award from the NERC/ACTF Programme of Analytical Science and Technology Studentships. ~ £65,000. Waldron S. 2010-2013. £50,000 from SSE, £12.5K from ETP, and £37.5k from EPSRC to support a Ph.D. studentship on the resilience and adaptation of a carbon landscape to hosting a windfarm. Waldron S. 2010-2014. Lead PI in WP1 Microclimates: Impact of Spatio-Climatic Variability on Environment-Hosted Land-based Renewables ,
£280,000 (FEC: £480,000). Waldron S. 2009-2010. The mangrove carbon cycle influence of below-ground processes and managed cutting, £3,500 (FEC: £4,000, NE/G009589/1). Co-Investigators: Dr. M. Huxham (University of Napier, Lead PI, FEC: £50,663.64) and Dr. M. Mencuccini (University of Edinburgh)
Waldron S. 2009-2012. Lead PI in CLAD: Carbon Landscapes and Drainage, £182,917 (FEC: £228,647, NERC NE/G008833/1). Co-Investigators: Dr. I.Grieve and Prof. D. Gilvear (University of Stirling. Total NON-FEC award: £394,290
Waldron S. 2008-2013. AMAZONICA: Amazon Integrated carbon analysis - Riverine carbon fluxes, £429,766 (FEC: £537,208). Co-Investigators: Prof. M. Bird (James Cook University, Cairns, Australia)
Waldron S. 2007 - 2010 Landscape influences on patterns of water movement in a large river basin, £15,600 from £196,668 (The Leverhulme Trust). With PI Prof. C. Soulsby (Geography, University of Aberdeen) and co-PI's Dr. S. Dunn (Macaulay Institute), Dr. I.A. Malcolm (Fisheries Research Service) and Dr. D. Tetzlaff (Geography, University of Aberdeen). Waldron S. 2004 - 2005 Study of Net Primary Productivity and Aquatic Algae Community Structure in Upland ‘Acidic’ Streams. (British Ecological Society £1500) Waldron S. 2004-2005. Is sample preservation of water samples necessary for representative measurement of radiocarbon and stable carbon isotopic signatures of dissolved organic matter? £20250 in-kind support from NERC Scientific Services for radiocarbon analyses. Teaching responsibilities Level 2 Geography: Current, past and future environment change.
Level 2: Swansea field trip.
Honours Option: Crustal fluids.
I am head of the departmental Graduate School. Current postgraduate students
Helen Murray (PhD candidate)
Ben Smith (PhD candidate)
Zhiwei Zhou (PhD candidate)
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