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Details of Dr Peter L Croot   


Gender male
Job title Established Professor
Department Earth and Ocean Sciences
National University of Ireland, Faculty of Science, Galway ( NUI)
School of Natural Sciences University Road Galway
Co. Galway
H91 TK33
Nationality New Zealand
Tel 0353 91 49 2194
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Degree PhD - Chemistry - University of Otago, New Zealand
Job type Teaching/Education , Research
Research Area(s) Biological Oceanography, Marine Ecology , Chemical Oceanography , Physical Oceanography , Pollution , Biological Oceanography, Marine Ecology , Chemical Oceanography , Physical Oceanography , Pollution
Research Activities Trace Metal speciation, Phytoplankton community structure, Harmful algal blooms, Southern Ocean Oceanography Iron limitation of phytoplankton Reactive Oxygen species in seawater
Marine CDOM & FDOM
Marine Photochemistry
Oxygen Minimum Zones

Research Region 25, 36, 70, 84, 85
Working languages English (mother tongue) - Spanish and German
Skills/Expertise Trace Metal Speciation Analysis Marine Primary Production Marine Photochemistry Coloured Dissolved Organic Matter Reactive Oxygen Species Flow Cytometry
PUBLICATIONS (as reported by Dr Peter CROOT)

Collins PC, Croot P, Carlsson J, Colaço A, Grehan A, et al. (2013) A primer for the Environmental Impact Assessment of mining at seafloor massive sulfide deposits. Marine Policy 42: 198-209.
Schlosser C, Streu P, Croot PL (2013) Vivaspin ultrafiltration: A new approach for high resolution measurements of colloidal and soluble iron species. Limnology and Oceanography Methods 11: 187-201.
Heller MI, Gaiero DM, Croot PL (2013) Basin scale survey of marine humic fluorescence in the Atlantic: Relationship to iron solubility and H2O2. Global Biogeochemical Cycles 27: 88-100.
Olgun N, Duggen S, Andronico D, Kutterolf S, Croot PL, et al. (2013) Possible impacts of volcanic ash emissions of Mount Etna on the primary productivity in the oligotrophic Mediterranean Sea: Results from nutrient-release experiments in seawater. Marine Chemistry 152: 32-42.
Dammshäuser A, Wagener T, Garbe-Schönberg D, Croot P (2013) Particulate and dissolved aluminum and titanium in the upper water column of the Atlantic Ocean. Deep Sea Research Part I: Oceanographic Research Papers 73: 127-139.
Wuttig K, Wagener T, Bressac M, Dammshäuser A, Streu P, et al. (2013) Impacts of dust deposition on dissolved trace metal concentrations (Mn, Al and Fe) during a mesocosm experiment. Biogeosciences 10: 2583-2600.
Williamson P, Wallace DWR, Law CS, Boyd PW, Collos Y, et al. (2012) Ocean fertilization for geoengineering: A review of effectiveness, environmental impacts and emerging governance. Process Safety and Environmental Protection 90: 475-488.
Dammshäuser A, Croot PL (2012) Low colloidal associations of aluminium and titanium in surface waters of the tropical Atlantic. Geochimica et Cosmochimica Acta 96: 304-318.
Cheize M, Sarthou G, Croot PL, Bucciarelli E, Baudoux A-C, et al. (2012) Iron organic speciation determination in rainwater using cathodic stripping voltammetry. Analytica Chimica Acta 736: 45-54.
Langlois RJ, Mills MM, Ridame C, Croot P, LaRoche J (2012) Diazotrophic bacteria respond to Saharan dust additions. Marine Ecology Progress Series 470: 1-14.
Schlosser C, De La Rocha CL, Streu P, Croot PL (2012) Solubility of iron in the Southern Ocean. Limnology and Oceanography 57: 684-697.
de Jong J, Schoemann V, Lannuzel D, Croot P, de Baar H, et al. (2012) Natural iron fertilization of the Atlantic sector of the Southern Ocean by continental shelf sources of the Antarctic Peninsula. J Geophys Res 117: G01029.
Croot PL, Heller MI (2012) The importance of kinetics and redox in the biogeochemical cycling of iron in the surface ocean. Frontiers in Microbiology 3.
Smetacek V, Klaas C, Strass VH, Assmy P, Montresor M, et al. (2012) Deep carbon export from a Southern Ocean iron-fertilized diatom bloom. Nature 487: 313-319.
Baars O, Croot PL (2011) Comparison of Alternate Reactants for pM Level Cobalt Analysis in Seawater by the Use of Catalytic Voltammetry. Electroanalysis 23: 1663-1670.
Dammshäuser A, Wagener T, Croot PL (2011) Surface water dissolved aluminum and titanium: Tracers for specific time scales of dust deposition to the Atlantic? Geophys Res Lett 38: L24601.
Croot PL (2011) Rapid Determination of Picomolar Titanium in Seawater with Catalytic Cathodic Stripping Voltammetry. Analytical Chemistry 83: 6395-6400.
Schroeder JP, Croot PL, Von Dewitz B, Waller U, Hanel R (2011) Potential and limitations of ozone for the removal of ammonia, nitrite, and yellow substances in marine recirculating aquaculture systems. Aquacultural Engineering 45: 35-41.
Croot PL, Heller MI, Schlosser C, Wuttig K (2011) Utilizing radio-isotopes for trace metal speciation measurements in seawater. In: Singh N, editor. Radioisotopes/ Book 1: In-Tech. pp. 247-278.
Smirnov A, Holben BN, Giles DM, Slutsker I, O'Neill NT, et al. (2011) Maritime aerosol network as a component of AERONET ? first results and comparison with global aerosol models and satellite retrievals. Atmos Meas Tech 4: 583-597.
Heller MI, Croot PL (2011) Superoxide decay as a probe for speciation changes during dust dissolution in Tropical Atlantic surface waters near Cape Verde. Marine Chemistry 126: 37-55.
Pohl C, Croot PL, Hennings U, Daberkow T, Budeus G, et al. (2011) Synoptic transects on the distribution of trace elements (Hg, Pb, Cd, Cu, Ni, Zn, Co, Mn, Fe, and Al) in surface waters of the Northern- and Southern East Atlantic. Journal of Marine Systems 84: 28-41.
Bluhm K, Croot PL, Huhn O, Rohardt G, Lochte K (2011) Distribution of iodide and iodate in the Atlantic sector of the southern ocean during austral summer. Deep Sea Research Part II: Topical Studies in Oceanography 58: 2733-2748.
Berg GM, Mills MM, Long MC, Bellerby R, Strass V, et al. (2011) Variation in particulate C and N isotope composition following iron fertilization in two successive phytoplankton communities in the Southern Ocean. Global Biogeochem Cycles 25: GB3013.
Baars O, Croot PL (2011) The speciation of dissolved zinc in the Atlantic sector of the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography 58: 2720-2732.
Schroeder JP, Reiser S, Croot PL, Hanel R (2011) A Comparative Study on the Removability of Different Ozone-Produced Oxidants by Activated Carbon Filtration. Ozone: Science & Engineering 33: 224-231.
Olgun N, Duggen S, Croot PL, Delmelle P, Dietze H, et al. (2011) Surface ocean iron fertilization: The role of airborne volcanic ash from subduction zone and hot spot volcanoes and related iron fluxes into the Pacific Ocean. Global Biogeochem Cycles 25: GB4001.
Schlosser C, De La Rocha CL, Croot PL (2011) Effects of iron surface adsorption and sample handling on iron solubility measurements. Marine Chemistry 127: 48-55.
Croot PL, Baars O, Streu P (2011) The distribution of dissolved zinc in the Atlantic sector of the Southern Ocean. Deep Sea Research Part II: Topical Studies in Oceanography 58: 2707-2719.
Bluhm K, Croot P, Wuttig K, Lochte K (2010) Transformation of iodate to iodide in marine phytoplankton driven by cell senescence. Aquatic Biology 11: 1-15.
Heller MI, Croot PL (2010) Superoxide Decay Kinetics in the Southern Ocean. Environmental Science & Technology 44: 191-196.
Boye M, Nishioka J, Croot P, Laan P, Timmermans KR, et al. (2010) Significant portion of dissolved organic Fe complexes in fact is Fe colloids. Marine Chemistry 122: 20-27.
Breitbarth E, Bellerby RJ, Neill CC, Ardelan MV, Meyerhöfer M, et al. (2010) Ocean acidification affects iron speciation during a coastal seawater mesocosm experiment. Biogeosciences 7: 1065-1073.
Duggen S, Olgun N, Croot P, Hoffmann L, Dietze H, et al. (2010) The role of airborne volcanic ash for the surface ocean biogeochemical iron cycle: a review. Biogeosciences 7: 827-844.
Heller MI, Croot PL (2010) Kinetics of superoxide reactions with dissolved organic matter in tropical Atlantic surface waters near Cape Verde (TENATSO). J Geophys Res 115: C12038
Baker AR, Croot PL (2010) Atmospheric and marine controls on aerosol iron solubility in seawater. Marine Chemistry 120: 4-13.
Breitbarth E, Achterberg EP, Ardelan MV, Baker AR, Bucciarelli E, et al. (2010) Iron biogeochemistry across marine systems ? progress from the past decade. Biogeosciences 7: 1075-1097.
Heller MI, Croot PL (2010) Application of a Superoxide (O2-) thermal source (SOTS-1) for the determination and calibration of O2- fluxes in seawater. Analytica Chimica Acta 667: 1-13.
Sutton J, Ellwood MJ, Maher WA, Croot PL (2010) Oceanic distribution of inorganic germanium relative to silicon: Germanium discrimination by diatoms. Global Biogeochem Cycles 24: GB2017.
A.Smirnov, B.N.Holben, I.Slutsker, D.Giles, C.R.McClain, T.F.Eck, S.M.Sakerin, A.Macke, P.Croot, G.Zibordi, P.Quinn, J.Sciare, S.Kinne, M.Harvey, T. Smith, S.Piketh, T.Zielinski, A.Proshutinsky, J.Goes, D.A.Siegel1, P.Larouche, V.F.Radionov, P.Goloub, K.Krishnamoorthy, R.Mataresse, E.J.Robertson and F.Jourdin. ?Maritime Aerosol Network (MAN) as a component of AERONET?. Journal of Geophysical Research, 114, D06204, doi:10.1029/2008JD011257 (2009).
L. Cotrim da Cunha, P.L. Croot and J. la Roche. ?Influence of river discharge in the tropical and subtropical North Atlantic Ocean ? comment?. Limnology and Oceanography, 53, 644-648 (2009).
Croot, P. L., K. Bluhm, C. Schlosser, P. Streu, E. Breitbarth, R. Frew, and M. Van Ardelan.?Regeneration of Fe(II) during EIFeX and SOFeX.? Geophysical Research Letters, 35, L19606, doi:10.1029/2008GL035063 (2008).
C. Schlosser and P.L. Croot. ?Application of cross-flow filtration for determining the solubility of iron species in open ocean seawater?. Limnology and Oceanography Methods, 6, 630-642, (2008).
Steigenberger, S. and P.L. Croot. ?Identifying the processes controlling the Distribution of H2O2 in surface waters along a meridional transect in the Eastern Atlantic.? Geophysical Research Letters, 35, L03616,doi:10.1029/2007GL032555 (2008).
Croot, P.L., R.D. Frew, S. Sander, K.A. Hunter,M.J. Ellwood, E.R. Abraham, C.S. Law, M.J. Smith and P.W. Boyd. ?The effects of physical forcing on iron chemistry and speciation during the FeCycle experiment in the South West Pacific?. Journal of Geophysical Research, 112, C06015, doi:10.1029/2006JC003748 (2007).
S. Duggen, P. Croot, U. Schacht and L. Hoffmann. ?Subduction zone volcanic ash can fertilize the surface ocean and stimulate phytoplankton growth: Evidence from biogeochemical experiments and satellite data?. Geophysical Research Letters, 34, L01612, doi:10.1029/2006GL027522 (2007).
de Baar, H. J. W., P. W. Boyd, K. H. Coale, M. R. Landry, A. Tsuda, P. Assmy, D. C. E. Bakker, Y. Bozec, R. T. Barber, M. A. Brzezinski, K. O. Buesseler, M. Boyé,, P. L. Croot, F. Gervais, M. Y. Gorbunov, P. J. Harrison, W. T. Hiscock, P. Laan, C. Lancelot, C. Law, M. Levasseur, A. Marchetti, F. J. Millero, J. Nishioka, Y. Nojiri, T. van Oijen, U. Riebesell1, M. J.A. Rijkenberg, H. Saito, S. Takeda, K. R. Timmermans, M. J.W. Veldhuis, A.M. Waite and C-S. Wong. ?Synthesis of 8 Iron Fertilization Experiments: from the Iron Age in the Age of Enlightenment.? Journal of Geophysical Research ? Oceans 110 (C9), C09S16, doi:10.1029/2004JC002601 (2005).
P.L. Croot, P Laan, J Nishioka, M Boye, K R Timmermans, R G Bellerby, L Goldson, P Nightingale and H.J.W. de Baar. ?Spatial and temporal distribution of Fe(II) and H2O2 during EISENEX, an open ocean mesoscale iron enrichment.? Marine Chemistry, 95, 65-88 (2005).
P.W. Boyd , C.L. Law, D.A. Hutchins, E. Abraham, P. Croot, M. Ellwood, R.D. Frew, J. Hall, S. Handy, C. Hare, J. Higgins, P. Hill, K.A. Hunter, K. LeBlanc, M. Maldonado, R.M. McKay, M. Oliver, S. Pickmere, K. Safi, S. Sander, S. Sanudo-Wilhelmy, M. Smith, R. Strzepek, A. Tovar-Sanchez and S. Wilhelm. ?FeCycle ? attempting an iron biogeochemical budget from a mesoscale SF6 tracer experiment in unperturbed low iron waters.? Global Biogeochemical Cycles 19, GB4S20, doi:10.1029/2005GB002494 (2005).
P.L. Croot, K. Anderson, M Öztürk and D Turner. ?Iron speciation and distribution along 6º E in the Southern Ocean?. Deep Sea Research II, 51(22-24), 2857-2879 (2004).
M. Öztürk, P. Croot, S. Bertilsson, K. Abrahamsson, B. Karlson, R. David, Chierici, M, and E. Sakshaug. ?Iron enrichment and photoreduction of iron under PAR and UV in the presence of hydrocarboxylic acid: Implications for phytoplankton growth in the Southern Ocean? Deep Sea Research II 51(22-24), 2841-2856 (2004).
R. Frew, A. Bowie, P. Croot, S. Pickmere. (2001) Macronutrient and trace-metal Geochemistry of an in situ iron-induced Southern Ocean bloom Deep-Sea Research II, 48, 2467-2482
Croot, P.L., Moffett, J.W. and Brand, L. (2000) Production of extracellular Cu complexing ligands by eucaryotic phytoplankton in response to Cu stress Limnology and Oceanography, 45(3), 619-627
Boyd, P.W., A.J. Watson, C.S. Law, E.R. Abraham, T. Trull, R. Murdoch, D.C.E. Bakker, A.R. Bowie, K.O. Buesseler, H. Chang, M. Charette, P.Croot, K. Downing, R. Frew, M. Gall, M. Hadfield, J. Hall, M. Harvey, G. Jameson, J. LaRoche, M. Liddicoat, R.Ling, M.T. Maldonado, R.M. McKay, S. Nodder, S. Pickmere, R. Pridmore, S. Rintoul, K. Safi, P. Sutton, R. Strzepek, K. Tanneberger, S. Turner, A. Waite & J. Zeldis. (2000) A mesoscale phytoplankton bloom in the polar Southern Ocean stimulated by iron fertilization Nature, 407, 695-702
Croot, P.L. and Johansson, M. (2000) Determination of iron speciation by cathodic stripping voltammetry in seawater using the competing ligand 2-(2-Thiazolylazo)-p-cresol (TAC) Electroanalysis, 12(8), 565-576
Falciatore, A, M. Ribera d'Alcalà, P. Croot and C. Bowler. (2000) Diatoms perceive and respond to environmental stimuli using calcium as a second messenger Science, 288, 2363-2366
Croot, P.L., Karlson, B., van Elteren, J.T. and Kroon, K.J. (1999) Uptake of 64Cu-Oxine by Marine Phytoplankton Environmental Science and Technology, 33(20), 3615-3621
Croot, P.L., Moffett, J.W., and Luther III, G.W. (1999) Polarographic determination of half-wave potentials for copper-organic complexes in seawater Marine Chemistry, 67(3-4), 219-232
Croot, P.L. and Hunter, K.A. (1998) Trace Metal distributions across the continental shelf near Otago Peninsula, New Zealand Marine Chemistry, 62(3-4), 185-201
Moffett, J.W, Brand L., Croot, P.L and Barbeau, K. (1997) Copper speciation and cyanobacterial distribution in harbors subject to anthroprogenic copper inputs Limnology and Oceanography, 42, 789-799
Barbeau, K., Moffett, J.W., Caron, D.A., Croot, P.L. and Erdner, D.L. (1996) Protozoan Grazing May Play a Role in Relieving Iron Limitation of Phytoplankton Nature, 380, 61-64
M. J. Ellwood, C. M.G. van den Berg, M. Boye, M. Veldhuis, J.T.M. de Jong, H.J.W. de Baar, P. L. Croot, G. Kattner. ?Organic complexation of cobalt across the Antarctic Polar Front in the Southern Ocean.? Marine and Freshwater Research 56(8), 1069-1075 (2005).
A.R. Bowie, E.P. Achterberg, P.L. Croot, H.J.W. de Baar, P. Laan, J.W. Moffett and P.J. Worsfold. ?A community wide intercomparison exercise for the determination of dissolved iron in seawater.? Marine Chemistry, 98(1), 81-99 (2006).

Created: 2001-06-05 Last Updated: 2016-06-17