Dr Angela Milne

Dr Angela Milne

Lecturer in Environmental Science

School of Geography, Earth and Environmental Sciences (Faculty of Science and Engineering)



Lecturer in Environmental Science
Angela moved into teaching following 10 years as a postdoctoral researcher, having spent time in Florida and Plymouth. She is still involved in research and the supervision of PhD students as well as teaching. As part of her teaching role, Angela is the Programme Lead for the two undergraduate environmental programmes, BSc Environmental Science and BSc Environmental Management and Sustainability and is the module lead for ENVS1002 (The Physical Environment).


Postdoctoral Research Fellow, Plymouth University: 2010 – 2017
Postdoctoral Research Associate, Florida State University: 2007-2010
PhD Marine Chemistry (University of Plymouth: 2003-2007)
BSc (Hons) Environmental Science (University of Plymouth: 1998-2002)

Professional membership

Royal Society of Chemistry
Challenger Society
American Geophysical Union (AGU)
American Society of Limnology and Oceanography (ASLO)


Teaching interests

Teaching interests cover Environmental and Analytical Chemistry with a focus on inorganic water chemistry, in both the freshwater and marine environment. These feed into the following modules/areas:
The Physical Environment (ENVS1002; Stage 1, BSc Environmental Science / BSc Environmental Management and Sustainability)
Sustainability Science (ENVS1009; Stage 1, BSc Environmental Science / BSc Environmental Management and Sustainability)
Field and Research Skills / Environmental Data Management (ENV*2002; Stage 2, BSc Environmental Science / BSc Environmental Management and Sustainability) 
Fieldwork and dissertations in Environmental Science (ENVS3001; Stage 4)
Fieldwork and dissertations as part of MSc Environmental Consultancy and MSc Sustainable Environmental Management and MSc Applied Marine Science (within the School of Biological & Marines Sciences), 


Research interests

My main focus is understanding the distributions and cycling of bio-essential trace metals, such as iron, cobalt and zinc, in the marine environment.
Trace metal biogeochemistry: I am interested in the distribution of trace elements (particularly elements that are essential for the growth and sustenance of marine life) in the ocean, both in the dissolved phase and from oceanic particulate material.
Analytical chemistry: I am very interested in developing and using analytical techniques which allow for the determination of multiple elements from one sample. 

Research groups

Research degrees awarded to supervised students

Antony Birchill (2013 – 2017, co-supervisor): Cycling of iron in the Celtic Sea.

Grants & contracts

Co-investigator on the following proposal submissions:
‘Processes Influencing Carbon Cycling Observations of the Lower Limb of the Antarctic Overturning’. NERC Directed Grant - Awarded £268,000.
‘Carbon uptake and seasonal traits of Antarctic remineralisation depth’. NERC Directed Grant - Awarded £262,000
‘Iron speciation in marine suspended particles transported from the Celtic Shelf’. Co-Investigator. Diamond Light Source Standard Proposal - Awarded beamtime
‘The supply of Iron from shelf sediments to the oceans’. NERC Directed Grant: Shelf Seas Biogeochemistry Programme - Awarded £304,000


Key publications

Key publications are highlighted

Chen X-G, Milne A, Klar JK, Gledhill M, Lohan MC, Hsieh Y-T, Henderson GM, Woodward EMS & Achterberg EP (2024) 'Controls on distributions of aluminium, manganese and cobalt in the South Atlantic Ocean along GEOTRACES transect GA10' Geochimica et Cosmochimica Acta 373, 177-196 Publisher Site , DOI Open access
Chen X-G, Gledhill M, Lohan MC, Milne A & Achterberg EP (2024) 'Surface ocean biogeochemistry and deep ocean circulation control relationships between nutrient-type trace metals (Cd, Ni, Cu, and Zn) and nutrients in the South Atlantic Ocean near the subtropical front' Geochimica et Cosmochimica Acta , DOI Open access
Wyatt N, Birchill A, Ussher S, Milne A, Bouman H, Troein E, Pabortsava K, Wright A, Flanagan O & Bibby T (2023) 'Phytoplankton responses to dust addition in the FeMn co-limited eastern Pacific sub-Antarctic differ by source region' Proceedings of the National Academy of Sciences , DOI Open access
Chen X-G, Rusiecka D, Gledhill M, Milne A, Annett AL, Birchill AJ, Lohan MC, Ussher S, Woodward EMS & Achterberg EP (2023) 'Ocean circulation and biological processes drive seasonal variations of dissolved Al, Cd, Ni, Cu, and Zn on the Northeast Atlantic continental margin' Marine Chemistry 252, , DOI Open access
Chen X-G, Rusiecka D, Gledhill M, Milne A, Annett AL, Beck AJ, Birchill AJ, Lohan MC, Ussher S & Achterberg EP (2023) 'Physical and biogeochemical controls on seasonal iron, manganese, and cobalt distributions in Northeast Atlantic shelf seas' Geochimica et Cosmochimica Acta 348, 278-295 , DOI Open access
Chiswell SM, Boyd PW, Sander SG, Ellwood MJ & Milne A (2022) 'Mesoscale eddies and the impact of coastal iron supply on primary production in the South Pacific Subtropical Front' Deep Sea Research Part I: Oceanographic Research Papers 188, , DOI Open access
Zhu K, Birchill AJ, Milne A, Ussher S, Humphreys MP, Carr N, Mahaffey C, Lohan MC, Achterberg EP & Gledhill M (2021) 'Equilibrium calculations of iron speciation and apparent iron solubility in the Celtic Sea at ambient seawater pH using the NICA-Donnan model' Marine Chemistry , DOI Open access
Wyatt NJ, Milne A, Achterberg EP, Browning TJ, Bouman HA, Woodward EMS & Lohan MC (2021) 'Seasonal cycling of zinc and cobalt in the south-eastern Atlantic along the GEOTRACES GA10 section' Biogeosciences 18, (14) 4265-4280 , DOI Open access
Schmidt K, Birchill AJ, Atkinson A, Brewin RJW, Clark JR, Hickman AE, Johns DG, Lohan MC, Milne A & Pardo S (2020) 'Increasing picocyanobacteria success in shelf waters contributes to long-term food web degradation' Global Change Biology , DOI Open access
Archer C, Vance D, Milne A & Lohan MC (2020) 'The oceanic biogeochemistry of nickel and its isotopes: New data from the South Atlantic and the Southern Ocean biogeochemical divide' Earth and Planetary Science Letters 535, 116118-116118 , DOI Open access
Tagliabue A, Bowie AR, DeVries T, Ellwood MJ, Landing WM, Milne A, Ohnemus DC, Twining BS & Boyd PW (2019) 'The interplay between regeneration and scavenging fluxes drives ocean iron cycling' Nature Communications 10, (1) 0-0 , DOI Open access
Chiswell SM, Safi KA, Sander SG, Strzepek R, Ellwood MJ, Milne A & Boyd PW (2019) 'Exploring mechanisms for spring bloom evolution: contrasting 2008 and 2012 blooms in the southwest Pacific Ocean' Journal of Plankton Research , DOI Open access
Meyerink SW, Boyd PW, Maher WA, Milne A, Strzepek R & Ellwood MJ (2019) 'Putting the silicon cycle in a bag: Field and mesocosm observations of silicon isotope fractionation in subtropical waters east of New Zealand' Marine Chemistry 213, 1-12 , DOI Open access
Birchill AJ, Hartner NT, Kunde K, Siemering B, Daniels C, Gonzalez-Santana D, Milne A, Ussher SJ, Worsfold PJ & Leopold K (2019) 'The eastern extent of seasonal iron limitation in the high latitude North Atlantic Ocean' Scientific Reports 9, Author Site , DOI Open access
Worsfold P, Achterberg E, Birchill A, Clough R, Leito I, Lohan M, Milne A & Ussher S (2019) 'Estimating Uncertainties in Oceanographic Trace Element Measurements' Frontiers in Marine Science , DOI Open access
Little SH, Archer C, Milne A, Schlosser C, Achterberg EP, Lohan MC & Vance D (2018) 'Paired dissolved and particulate phase Cu isotope distributions in the South Atlantic' Chemical Geology , DOI Open access
Schlitzer R, Anderson RF, Dodas EM, Lohan M, Geibert W, Tagliabue A, Bowie A, Jeandel C, Maldonado MT & Landing WM (2018) 'The GEOTRACES Intermediate Data Product 2017' Chemical Geology 493, 210-223 , DOI Open access
Tagliabue A, Hawco NJ, Bundy RM, Landing WM, Milne A, Morton PL & Saito MA (2018) 'The Role of External Inputs and Internal Cycling in Shaping the Global Ocean Cobalt Distribution: Insights From the First Cobalt Biogeochemical Model' Global Biogeochemical Cycles , DOI Open access
Rusiecka D, Gledhill M, Milne A, Achterberg EP, Annett AL, Atkinson S, Birchill A, Karstensen J, Lohan M & Mariez C (2018) 'Anthropogenic Signatures of Lead in the Northeast Atlantic' Geophysical Research Letters 45, (6) 2734-2743 , DOI Open access
Bridgestock L, Rehkaemper M, van de Flierdt T, Paul M, Milne A, Lohan MC & Achterberg EP (2018) 'The distribution of lead concentrations and isotope compositions in the eastern Tropical Atlantic Ocean' GEOCHIMICA ET COSMOCHIMICA ACTA 225, 36-51 Author Site , DOI Open access
Birchill AJ, Milne A, S. Woodward EM, Harris C, Annett A, Rusiecka D, Achterberg EP, Gledhill M, Ussher SJ & Worsfold PJ (2017) 'Seasonal iron depletion in temperate shelf seas' Geophysical Research Letters , DOI Open access
Hopwood MJ, Birchill AJ, Gledhill M, Achterberg EP, Klar JK & Milne A (2017) 'A Comparison between Four Analytical Methods for the Measurement of Fe(II) at Nanomolar Concentrations in Coastal Seawater' Frontiers in Marine Science 4, , DOI Open access
Milne A, Schlosser C, Wake BD, Achterberg EP, Chance R, Baker AR, Forryan A & Lohan MC (2017) 'Particulate phases are key in controlling dissolved iron concentrations in the (sub)tropical North Atlantic' Geophysical Research Letters , DOI Open access
Charette MA, Lam PJ, Lohan MC, Kwon EY, Hatje V, Jeandel C, Shiller AM, Cutter GA, Thomas A & Boyd PW (2016) 'Coastal ocean and shelf-sea biogeochemical cycling of trace elements and isotopes: lessons learned from GEOTRACES' Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, (2081) 20160076-20160076 , DOI Open access
Bridgestock L, van de Flierdt T, Rehkamper M, Paul M, Middag R, Milne A, Lohan MC, Baker AR, Chance R & Khondoker R (2016) 'Return of naturally sourced Pb to Atlantic surface waters' NATURE COMMUNICATIONS 7, (0) 0-0 Author Site , DOI Open access
Clough R, Floor GH, Quétel CR, Milne A, Lohan MC & Worsfold PJ (2016) 'Measurement uncertainty associated with shipboard sample collection and filtration for the determination of the concentration of iron in seawater' Anal. Methods 8, (37) 6711-6719 , DOI Open access
Grand MM, Measures CI, Hatta M, Morton PL, Barrett P, Milne A, Resing JA & Landing WM (2015) 'The impact of circulation and dust deposition in controlling the distributions of dissolved Fe and Al in the south Indian subtropical gyre' Marine Chemistry 176, 110-125 , DOI
Ellwood MJ, Hutchins DA, Lohan MC, Milne A, Nasemann P, Nodder SD, Sander SG, Strzepek R, Wilhelm SW & Boyd PW (2015) 'Iron stable isotopes track pelagic iron cycling during a subtropical phytoplankton bloom' Proc Natl Acad Sci U S A 112, (1) E15-E20 Author Site , DOI
Clough R, Sela H, Milne A, Lohan MC, Tokalioglu S & Worsfold PJ (2014) 'Uncertainty contributions to the measurement of dissolved Co, Fe, Pb and V in seawater using flow injection with solid phase preconcentration and detection by collision/reaction cell-quadrupole ICP-MS' Talanta 133, 162-169 Author Site , DOI Open access
Wyatt NJ, Milne A, Woodward EMS, Rees AP, Browning TJ, Bouman HA, Worsfold PJ & Lohan MC (2014) 'Biogeochemical cycling of dissolved zinc along the GEOTRACES South Atlantic transect GA10 at 40 S' GLOBAL BIOGEOCHEMICAL CYCLES 28, (1) 44-56 , DOI Open access
Morton PL, Landing WM, Hsu S-C, Milne A, Aguilar-Islas AM, Baker AR, Bowie AR, Buck CS, Gao Y & Gichuki S (2013) 'Methods for the sampling and analysis of marine aerosols: results from the 2008 GEOTRACES aerosol intercalibration experiment' LIMNOLOGY AND OCEANOGRAPHY-METHODS 11, 62-78 , DOI
Gosnell KJ, Landing WM & Milne A (2012) 'Fluorometric detection of total dissolved zinc in the southern Indian Ocean' MARINE CHEMISTRY 132, 68-76 , DOI
Milne A, Landing W, Bizimis M & Morton P (2010) 'Determination of Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb in seawater using high resolution magnetic sector inductively coupled mass spectrometry (HR-ICP-MS)' Anal Chim Acta 665, (2) 200-207 Author Site , DOI
Ussher SJ, Milne A, Landing WM, Attiq-ur-Rehman K, Séguret MJM, Holland T, Achterberg EP, Nabi A & Worsfold PJ (2009) 'Investigation of iron(III) reduction and trace metal interferences in the determination of dissolved iron in seawater using flow injection with luminol chemiluminescence detection' Anal Chim Acta 652, (1-2) 259-265 Author Site , DOI
Milne A, Davey MS, Worsfold PJ, Achterberg EP & Taylor AR (2009) 'Real-time detection of reactive oxygen species generation by marine phytoplankton using flow injection-chemiluminescence' LIMNOLOGY AND OCEANOGRAPHY-METHODS 7, 706-715 , DOI
Mills MM, Moore CM, Langlois R, Milne A, Achterberg E, Nachtigall K, Lochte K, Geider RJ & La Roche J (2008) 'Nitrogen and phosphorus co-limitation of bacterial productivity and growth in the oligotrophic subtropical North Atlantic' LIMNOLOGY AND OCEANOGRAPHY 53, (2) 824-834 , DOI
Moore CM, Mills MM, Langlois R, Milne A, Achterberg EP, La Roche J & Geider RJ (2008) 'Relative influence of nitrogen and phosphorus availability on phytoplankton physiology and productivity in the oligotrophic sub-tropical North Atlantic Ocean' LIMNOLOGY AND OCEANOGRAPHY 53, (1) 291-305 , DOI
Moore CM, Mills MM, Milne A, Langlois R, Achterberg EP, Lochte K, Geider RJ & La Roche J (2006) 'Iron limits primary productivity during spring bloom development in the central North Atlantic' GLOBAL CHANGE BIOLOGY 12, (4) 626-634 , DOI
Davidson MA, Aarninkhof SGJ, Van Koningsveld M & Holman RA (2004) 'Developing standards for dissolved iron in seawater. ' EOS 88 (11), 131-132
Presentations and posters
Birchill A, Baker C, Wyatt N, Turnbull I, Milne A, Martin A, Moore M & Ussher S Birchill A, Baker C, Wyatt N, Turnbull I, Milne A, Martin A, Moore M & Ussher S '<i>Hydrothermal iron supply to the remote southeast Pacific Ocean</i>' , DOI