

Dr Bryan SpearsFreshwater Ecologist
Research interests I am a freshwater ecologist with particular expertise in the biogeochemical transformation of nutrients within shallow aquatic ecosystems and the role of aquatic organisms in regulating these processes. I have experience in studying the roles of benthic microalgae, macrophytes, bacteria and macroinvertebrates in regulating nutrient cycling between sediments and overlying waters in shallow lakes. Introduction to CEH's work on freshwater lakes (video)
Current workI currently lead a series of projects designed to assess forced recovery in shallow lakes using phosphorus capping products. These studies range from laboratory scale assays to whole lake experiments, the results of which are being used to underpin policy development in the UK and EU on the use of novel lake restoration methods. This work continues to develop our understanding of ecosystem resilience and regime shifts in shallow lakes. More information on
CEH’s
Current research projects
Recent research projects 2012: Restoration of freshwaters and wetlands (CEH) 2012: Monitoring and assessment of the impacts of droughts (MWH) 2012: Climate change, algal growth and management of water supply (WRc) 2012: Ecosystem resilience: pattern, structure and function (WP1.1-CEH Internal) 2012: Assessing recovery from eutrophication in Loch Flemington following control of sediment phosphorus release using Phoslock® (SNH) 2012: EA-CEH Lake Restoration Project (CLEAR) (EA & CEH) 2011: Assessing the need for the control of internal phosphorus loading in EA lakes (EA) 2011: Assessing long-term studies of ecosystem regime shifts (CEH) 2011: Assessing recovery trajectories for Loch Fitty (Scottish Coal Ltd) 2010-2011: Developing the Magnetic Particle Induction System for cohesivity measurement of surfaces (NERC Innovations “A” award) 2010-2011: Flood-risk assessment of Linlithgow Loch (West Lothian Council) 2011-2012: Water quality monitoring at Loch Leven – 2008-2010 (SNH) 2010-2012: Restoration requirements at Linlithgow Loch (SNH & SEPA) 2010: The impact of phosphorus inputs from small discharges on designated freshwater sites (Broads Authority and Natural England) 2010: Assessment of restoration requirements at Hornsea Mere (NE) 2009-2012: Waterbodies in Europe: Integrative Systems to Assess Ecological Status and Recovery (WISER) (EU FP7) 2009-2011: Assessing lake restoration needs in the UK (CEH) 2008-2010: Variation in bacterial community composition in shallow lakes (CEH/Leverhulme) 2009-2012: Assessing forced regime shifts for speeding up recovery in shallow lakes (CEH; DAAD; Phoslock® Europe GmBH) 2008-2009: Physical ecosystem engineering by aquatic plants (NERC) 2008-2009: Literature review of the Tay catchment (CEH) 2008-2009: Developing methods for quantifying spatial heterogeneity in lakes (CEH) 2007-2009: Assessing trophic interactions in Loch Leven (CEH Integrating fund) 2007-present: Long-term monitoring of Loch Leven (CEH) 2007-2008: Identifying the gap to meet Water Framework Directive - Lake baselines (Defra) 2007-2008: Nutrient Modeling and a Nutrient Budget for Llangorse Lake (CCW)
Student projects supervised
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Brief CV
Recent publicationsSee also the NERC Open Research Archive. Spears, B.M., Meis, S., Anderson, A. and Kellou, M. Comparison of phosphorus (P) removal properties of materials proposed for the control of sediment P release in UK lakes. Science of the total Environment (accepted) Verdonschot, P.F.M., Spears B.M., Feld, CK., Brucet, S., Keizer-Vlek, H., Borja, A., Elliott, M., Kernan, M., and Johnson, R.K. A comparative review of recovery processes in rivers, lakes, estuarine and coastal waters. Hydrobiologia (in press) Winfield, I.J., Adams, C.E., Armstrong, J.D., Gardiner, R., Kirika, A., Montgomery, J., Spears, B.M., Stewart, D.C., Thorpe, J.E. and Wilson, W. 2012. Changes in the fish community of Loch Leven: untangling anthropogenic pressures. Hydrobiologia 681(1), 73-84. Spears, B.M., Carvalho, L., Perkins, R., Kirika, A. and Paterson, D.M. 2012. Long-term variation and regulation of internal phosphorus loading in Loch Leven. Hydrobiologia 681(1), 23-33. Spears, B. and May, L. 2012. Antony Edward Bailey-Watts PhD, DSc (23 August 1942 - 15 July 2007) In memoriam. Hydrobiologia 681(1), 1-2. Meis, S., Spears, B.M., Maberly, S.C., O'Malley, M.B. and Perkins, R.G. 2012. Sediment amendment with Phoslock (R) in Clatto Reservoir (Dundee, UK): Investigating changes in sediment elemental composition and phosphorus fractionation. J. Environ. Manage. 93(1), 185-193. May, L. and Spears, B.M. (Eds.) 2012.. Loch Leven: 40 years of scientific research – Understanding the links between pollution, climate change and ecological response. Developments in Hydrobiology 218. ISBN 978-94-007-4332-8 May, L. and Spears, B.M. 2012. Managing ecosystem services at Loch Leven, Scotland, UK: actions, impacts and unintended consequences. Hydrobiologia 681(1), 117-130. May, L. and Spears, B.M. 2012. A history of scientific research at Loch Leven, Kinross, Scotland. Hydrobiologia 681(1), 3-9. Letovsky, E., Heal, K., Carvalho, L. and Spears, B. 2012. Intracellular Versus Extracellular Iron Accumulation in Freshwater Periphytic Mats Across a Mine Water Treatment Lagoon. Water, Air, & Soil Pollution 223(4), 1519-1530. Carvalho, L., Miller, C., Spears, B.M., Gunn, I.D.M., Bennion, H., Kirika, A. and May, L. 2012. Water quality of Loch Leven: responses to enrichment, restoration and climate change. Hydrobiologia 681(1), 35-47. Carss, D., Spears, B.M., Quinn, L. and Cooper, R. 2012. Long-term variations in waterfowl populations in Loch Leven: identifying discontinuities between local and national trends. Hydrobiologia 681(1), 85-104. Anderson A.M., Spears B.M., Lubarsky H.V., Davidson I., Gerbersdorf S.U. and Paterson D.M. 2011. Magnetic Particle Induction and Its Importance in Biofilm Research. In: Reza Fazel-Rezai (Ed.) "Biomedical Engineering - Frontiers and Challenges". ISBN 978-953-307-309-5. In-Tech Scientific Publishers. DOI: 10.5772/21224 Spears, B.M., Carvalho, L., Perkins, R., O'Malley, M.B. and Paterson, D.M. 2010. The contribution of epipelon to total sediment microalgae in a shallow temperate eutrophic loch (Loch Leven, Scotland). Hydrobiologia 646(1), 281-293. Spears, B. and Jones, I. 2010. The long-term (1979–2005) effects of the North Atlantic Oscillation on wind-induced wave mixing in Loch Leven (Scotland). Hydrobiologia 646(1), 49-59. May, L., Spears, B.M., Dudley, B.J. and Hatton-Ellis, T.W. 2010. The importance of nitrogen limitation in the restoration of Llangorse Lake, Wales, UK. J. Environ. Monitoring 12(1), 338-346. Spears, B.M., Gunn, I.D.M., Carvalho, L., Winfield, I.J., Dudley, B., Murphy, K. and May, L. 2009. An evaluation of methods for sampling macrophyte maximum colonisation depth in Loch Leven, Scotland. Aquatic Botany 91(2), 75-81. Evans, K.M., Chepurnov, V.A., Sluiman, H.J., Thomas, S.J., Spears, B.M. and Mann, D.G. 2009. Highly Differentiated Populations of the Freshwater Diatom Sellaphora capitata Suggest Limited Dispersal and Opportunities for Allopatric Speciation. Protist 160(3), 386-396. Duethmann, D., Anthony, S., Carvalho, L. and Spears, B. 2009. A model‐based assessment of non‐compliance of phosphorus standards for lakes in England and Wales. Int. J. River Basin Manage. 7(3), 197-207. Spears, B.M., Saunders, J.E., Davidson, I. and Paterson, D.M. 2008. Microalgal sediment biostabilisation along a salinity gradient in the Eden Estuary, Scotland: unravelling a paradox. Marine and Freshwater Research 59(4), 313-321. Spears, B.M., Carvalho, L., Perkins, R. and Paterson, D.M. 2008. Effects of light on sediment nutrient flux and water column nutrient stoichiometry in a shallow lake. Water Research 42(4-5), 977-986. Poulickova, A., Hasler, P., Lysakova, M. and Spears, B. 2008. The ecology of freshwater epipelic algae: an update. Phycologia 47(5), 437-450. Spears, B.M., Carvalho, L., Perkins, R., Kirika, A. and Paterson, D.M. 2007. Sediment phosphorus cycling in a large shallow lake: spatio-temporal variation in phosphorus pools and release. Hydrobiologia 584, 37-48. Spears, B.M., Carvalho, L. and Paterson, D.M. 2007. Phosphorus partitioning in a shallow lake: implications for water quality management. Water and Environment Journal 21(1), 47-53. Spears, B.M., Carvalho, L. and Paterson, D.M. 2007. Phosphorus partitioning in a shallow lake: implications for water quality management. Water and Environment Journal 21(1), 47-53. Spears, B.M., Funnel, J., Saunders, J. and Paterson, D.M. 2007. On the boundaries: sediment stability measurements across aquatic ecosystems. Environ. Sci. and Engineering, 67-116. Spears, B.M. and Lesack, L.F.W. 2006. Bacterioplankton production, abundance, and nutrient limitation among lakes of the Mackenzie Delta (western Canadian arctic). Canadian J. Fisheries & Aquatic Sciences 63(4), 845-857. Spears, B.M., Carvalho, L., Perkins, R., Kirika, A. and Paterson, D.M. 2006. Spatial and historical variation in sediment phosphorus fractions and mobility in a large shallow lake. Water Research 40(2), 383-391. |

