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Claire Mahaffey

Professor Claire Mahaffey
BSc, PhD

Contact

Claire.Mahaffey@liverpool.ac.uk

+44 (0)151 794 4090

Publications

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2023

Multi-decadal trends in biomarkers in harp seal teeth from the North Atlantic reveal the influence of prey availability on seal trophic position

de la Vega, C., Kershaw, J., Stenson, G. B., Frie, A. K., Biuw, M., Haug, T., . . . Jeffreys, R. M. (2023). Multi-decadal trends in biomarkers in harp seal teeth from the North Atlantic reveal the influence of prey availability on seal trophic position. GLOBAL CHANGE BIOLOGY, 29(19), 5582-5595. doi:10.1111/gcb.16889

DOI
10.1111/gcb.16889
Journal article

2022

2021

The Importance of Water Mass Transport and Dissolved-Particle Interactions on the Aluminum Cycle in the Subtropical North Atlantic

Artigue, L., Wyatt, N. J., Lacan, F., Mahaffey, C., & Lohan, M. C. (2021). The Importance of Water Mass Transport and Dissolved-Particle Interactions on the Aluminum Cycle in the Subtropical North Atlantic. GLOBAL BIOGEOCHEMICAL CYCLES, 35(5). doi:10.1029/2020GB006569

DOI
10.1029/2020GB006569
Journal article

A warm jet in a cold ocean.

MacKinnon, J. A., Simmons, H. L., Hargrove, J., Thomson, J., Peacock, T., Alford, M. H., . . . Wood, K. R. (2021). A warm jet in a cold ocean. NATURE COMMUNICATIONS, 12(1). doi:10.1038/s41467-021-22505-5

DOI
10.1038/s41467-021-22505-5
Journal article

2020

GO-SHIP Repeat Hydrography Nutrient Manual: The Precise and Accurate Determination of Dissolved Inorganic Nutrients in Seawater, Using Continuous Flow Analysis Methods

Becker, S., Aoyama, M., Woodward, E. M. S., Bakker, K., Coverly, S., Mahaffey, C., & Tanhua, T. (2020). GO-SHIP Repeat Hydrography Nutrient Manual: The Precise and Accurate Determination of Dissolved Inorganic Nutrients in Seawater, Using Continuous Flow Analysis Methods. Frontiers in Marine Science, 7. doi:10.3389/fmars.2020.581790

DOI
10.3389/fmars.2020.581790
Journal article

Water mass analysis along 22 °N in the subtropical North Atlantic for the JC150 cruise (GEOTRACES, GApr08)

Artigue, L., Lacan, F., van Gennip, S., Lohan, M. C., Wyatt, N. J., Woodward, E. M. S., . . . Drillet, Y. (2020). Water mass analysis along 22 °N in the subtropical North Atlantic for the JC150 cruise (GEOTRACES, GApr08). Deep Sea Research Part I: Oceanographic Research Papers, 158, 103230. doi:10.1016/j.dsr.2020.103230

DOI
10.1016/j.dsr.2020.103230
Journal article

2019

Arctic Cafe

Heath, A. E., & Mahaffey, C. (2019). Arctic Cafe. [Poster for schools]. Retrieved from https://arcticarise.wordpress.com/outreach

Media

Now versus 1980

Heath, A. E., & Mahaffey, C. (2019). Now versus 1980. [Poster for schools]. Retrieved from https://arcticarise.wordpress.com/outreach

Media

Polar News and Isotopes

Heath, A. E., & Mahaffey, C. (2019). Polar News and Isotopes. [Poster for schools]. Retrieved from https://arcticarise.wordpress.com/outreach

Media

Internal Tides Drive Nutrient Fluxes Into the Deep Chlorophyll Maximum Over Mid‐ocean Ridges

Tuerena, R., Williams, R., Mahaffey, C., Clément Vic, J., Green, M., Naveira‐Garabato, A., . . . Sharples, J. (2019). Internal Tides Drive Nutrient Fluxes Into the Deep Chlorophyll Maximum Over Mid‐ocean Ridges. Global Biogeochemical Cycles: an international journal of global change, 33(8), 995-1009. doi:10.1029/2019GB006214

DOI
10.1029/2019GB006214
Journal article

2017

Temporal variability of nitrogen fixation and particulate nitrogen export at Station ALOHA

Bottjer, D., Dore, J. E., Karl, D. M., Letelier, R. M., Mahaffey, C., WIlson, S. T., . . . Church, M. J. (2017). Temporal variability of nitrogen fixation and particulate nitrogen export at Station ALOHA. Limnology and Oceanography, 62(1), 200-216. doi:10.1002/lno.10386

DOI
10.1002/lno.10386
Journal article

2016

Glider observations of enhanced deep water upwelling at a shelf break canyon: A mechanism for cross-slope carbon and nutrient exchange

Porter, M., Inall, M. E., Hopkins, J., Palmer, M. R., Dale, A. C., Aleynik, D., . . . Smeed, D. A. (2016). Glider observations of enhanced deep water upwelling at a shelf break canyon: A mechanism for cross-slope carbon and nutrient exchange. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 121(10), 7575-7588. doi:10.1002/2016JC012087

DOI
10.1002/2016JC012087
Journal article

2015

2014

A storm in a shelf sea: Variation in phosphorus distribution and organic matter stoichiometry

Davis, C. E., Mahaffey, C., Wolff, G. A., & Sharples, J. (2014). A storm in a shelf sea: Variation in phosphorus distribution and organic matter stoichiometry. GEOPHYSICAL RESEARCH LETTERS, 41(23), 8452-8459. doi:10.1002/2014GL061949

DOI
10.1002/2014GL061949
Journal article

Evidence for production and lateral transport of dissolved organic phosphorus in the eastern subtropical North Atlantic

Reynolds, S., Mahaffey, C., Roussenov, V., & Williams, R. G. (2014). Evidence for production and lateral transport of dissolved organic phosphorus in the eastern subtropical North Atlantic. GLOBAL BIOGEOCHEMICAL CYCLES, 28(8), 805-824. doi:10.1002/2013GB004801

DOI
10.1002/2013GB004801
Journal article

A storm in a shelf sea: variation in organic matter distribution and stoichiometry

Davis, C., Mahaffey, C., Wolff, G., & Sharples, J. (2014). A storm in a shelf sea: variation in organic matter distribution and stoichiometry. Geophysical Research Letters.

Journal article

2013

Wind-driven nutrient pulses to the subsurface chlorophyll maximum in seasonally stratified shelf seas

Williams, C., Sharples, J., Mahaffey, C., & Rippeth, T. (2013). Wind-driven nutrient pulses to the subsurface chlorophyll maximum in seasonally stratified shelf seas. GEOPHYSICAL RESEARCH LETTERS, 40(20), 5467-5472. doi:10.1002/2013GL058171

DOI
10.1002/2013GL058171
Journal article

Wind‐driven nutrient pulses to the subsurface chlorophyll maximum in seasonally stratified shelf seas

Williams, C., Sharples, J., Mahaffey, C., & Rippeth, T. (2013). Wind‐driven nutrient pulses to the subsurface chlorophyll maximum in seasonally stratified shelf seas. Geophysical Research Letters, 40(20), 5467-5472. doi:10.1002/2013gl058171

DOI
10.1002/2013gl058171
Journal article

Equatorial upwelling enhances nitrogen fixation in the Atlantic Ocean

Subramaniam, A., Mahaffey, C., Johns, W., & Mahowald, N. (2013). Equatorial upwelling enhances nitrogen fixation in the Atlantic Ocean. Geophysical Research Letters, 40(9), 1766-1771. doi:10.1002/grl.50250

DOI
10.1002/grl.50250
Journal article

The maintenance of the subsurface chlorophyll maximum in the stratified western Irish Sea

Williams, C., Sharples, J., Green, M., Mahaffey, C., & Rippeth, T. (2013). The maintenance of the subsurface chlorophyll maximum in the stratified western Irish Sea. Limnology and Oceanography: Fluids and Environments, 3(1), 61-73. doi:10.1215/21573689-2285100

DOI
10.1215/21573689-2285100
Journal article

The maintenance of the subsurface chlorophyll maximum in the stratified western Irish Sea.

Williams, C. W., Sharples, J. S., Green, M., Mahaffey, C., & Rippeth, R. (2013). The maintenance of the subsurface chlorophyll maximum in the stratified western Irish Sea.. Limnology and Oceanography: Fluids and Environments, 3, 1-14.

Journal article

2012

Phytoplankton response to deep seawater nutrient addition in the North Pacific Subtropical Gyre

Mahaffey, C., Björkman, K. M., & Karl, D. M. (2012). Phytoplankton response to deep seawater nutrient addition in the North Pacific Subtropical Gyre. Marine Ecology Progress Series, 460, 13-34. doi:10.3354/meps09699

DOI
10.3354/meps09699
Journal article

Short-term and seasonal variation in metabolic balance in Liverpool Bay

Panton, A., Mahaffey, C., Greenwood, N., Hopkins, J., Montagnes, D., & Sharples, J. (2012). Short-term and seasonal variation in metabolic balance in Liverpool Bay. OCEAN DYNAMICS, 62(2), 295-306. doi:10.1007/s10236-011-0494-4

DOI
10.1007/s10236-011-0494-4
Journal article

2011

Assessing the spatial and temporal variability of dissolved organic matter in Liverpool Bay using excitation–emission matrix fluorescence and parallel factor analysis

Yamashita, Y., Panton, A., Mahaffey, C., & Jaffé, R. (2011). Assessing the spatial and temporal variability of dissolved organic matter in Liverpool Bay using excitation–emission matrix fluorescence and parallel factor analysis. Ocean Dynamics, 61(5), 569-579. doi:10.1007/s10236-010-0365-4

DOI
10.1007/s10236-010-0365-4
Journal article

Spatial and temporal variability in nutrient concentrations in Liverpool Bay, a temperate latitude region of freshwater influence

Greenwood, N., Hydes, D. J., Mahaffey, C., Wither, A., Barry, J., Sivyer, D., . . . Lees, H. E. (2011). Spatial and temporal variability in nutrient concentrations in Liverpool Bay, a temperate latitude region of freshwater influence. Ocean Dynamics, 61, 2181-2199.

Journal article

2009

Physical forcing of nitrogen fixation and diazotroph community structure in the North Pacific subtropical gyre

Church, M. J., Mahaffey, C., Letelier, R. M., Lukas, R., Zehr, J. P., & Karl, D. M. (2009). Physical forcing of nitrogen fixation and diazotroph community structure in the North Pacific subtropical gyre. Global Biogeochemical Cycles, 23(2). doi:10.1029/2008gb003418

DOI
10.1029/2008gb003418
Journal article

The relationship between dissolved hydrogen and nitrogen fixation in ocean waters

Moore, R. M., Punshon, S., Mahaffey, C., & Karl, D. M. (2009). The relationship between dissolved hydrogen and nitrogen fixation in ocean waters. Deep-Sea Research, Part I, 56(9), 1401-1604.

Journal article

2008

Assessment of relative phosphorus limitation of Trichodesmium spp. in the North Pacific, North Atlantic, and the north coast of Australia

Sohm, J. A., Mahaffey, C., & Capone, D. G. (2008). Assessment of relative phosphorus limitation of Trichodesmium spp. in the North Pacific, North Atlantic, and the north coast of Australia. Limnology and Oceanography, 53(6), 2495-2502. doi:10.4319/lo.2008.53.6.2495

DOI
10.4319/lo.2008.53.6.2495
Journal article

Amazon River enhances diazotrophy and carbon sequestration in the tropical North Atlantic Ocean.

Subramaniam, A., Yager, P. L., Carpenter, E. J., Mahaffey, C., Björkman, K., Cooley, S., . . . Capone, D. G. (2008). Amazon River enhances diazotrophy and carbon sequestration in the tropical North Atlantic Ocean.. Proceedings of the National Academy of Sciences of the United States of America, 105(30), 10460-10465. doi:10.1073/pnas.0710279105

DOI
10.1073/pnas.0710279105
Journal article

Nitrogen dynamics within a wind-driven eddy

Mahaffey, C., Benitez-Nelson, C. R., Bidigare, R. R., Rii, Y., & Karl, D. M. (2008). Nitrogen dynamics within a wind-driven eddy. Deep Sea Research Part II: Topical Studies in Oceanography, 55(10-13), 1398-1411. doi:10.1016/j.dsr2.2008.02.004

DOI
10.1016/j.dsr2.2008.02.004
Journal article

Particle export within cyclonic Hawaiian lee eddies derived from 210Pb–210Po disequilibrium

Verdeny, E., Masqué, P., Maiti, K., Garcia-Orellana, J., Bruach, J. M., Mahaffey, C., & Benitez-Nelson, C. R. (2008). Particle export within cyclonic Hawaiian lee eddies derived from 210Pb–210Po disequilibrium. Deep Sea Research Part II: Topical Studies in Oceanography, 55(10-13), 1461-1472. doi:10.1016/j.dsr2.2008.02.009

DOI
10.1016/j.dsr2.2008.02.009
Journal article

The Nitrogen Cycle in the North Pacific Trades Biome: an Evolving Paradigm

Karl, D. M., Bidigare, R. R., Church, M. J., Dore, J. E., Letelier, R. M., Mahaffey, C., & Zehr, J. (2008). The Nitrogen Cycle in the North Pacific Trades Biome: an Evolving Paradigm. In D. G. Capone, E. J. Carpenter, M. Mulholland, & D. A. Bronk (Eds.), Nitrogen in the Marine Environment (pp. in press.). New York: Academic Press.

Chapter

2007

Mesoscale eddies drive increased silica export in the subtropical Pacific Ocean.

Benitez-Nelson, C. R., Bidigare, R. R., Dickey, T. D., Landry, M. R., Leonard, C. L., Brown, S. L., . . . Yang, E. J. (2007). Mesoscale eddies drive increased silica export in the subtropical Pacific Ocean.. Science (New York, N.Y.), 316(5827), 1017-1021. doi:10.1126/science.1136221

DOI
10.1126/science.1136221
Journal article

Isotopic heterogeneity and cycling of organic nitrogen in the oligotrophic ocean

Meador, T. B., Aluwihare, L. I., & Mahaffey, C. (2007). Isotopic heterogeneity and cycling of organic nitrogen in the oligotrophic ocean. Limnology and Oceanography, 52(3), 934-947. doi:10.4319/lo.2007.52.3.0934

DOI
10.4319/lo.2007.52.3.0934
Journal article

Influence of the Amazon River plume on distributions of free‐living and symbiotic cyanobacteria in the western tropical north Atlantic Ocean

Foster, R. A., Subramaniam, A., Mahaffey, C., Carpenter, E. J., Capone, D. G., & Zehr, J. P. (2007). Influence of the Amazon River plume on distributions of free‐living and symbiotic cyanobacteria in the western tropical north Atlantic Ocean. Limnology and Oceanography, 52(2), 517-532. doi:10.4319/lo.2007.52.2.0517

DOI
10.4319/lo.2007.52.2.0517
Journal article

2006

Does the transport of dissolved organic nutrients affect export production in the Atlantic Ocean?

Roussenov, V., Williams, R. G., Mahaffey, C., & Wolff, G. A. (2006). Does the transport of dissolved organic nutrients affect export production in the Atlantic Ocean?. GLOBAL BIOGEOCHEMICAL CYCLES, 20(3). doi:10.1029/2005GB002510

DOI
10.1029/2005GB002510
Journal article

2005

The conundrum of marine N2 fixation

Mahaffey, C. (2005). The conundrum of marine N2 fixation. American Journal of Science, 305(6-8), 546-595. doi:10.2475/ajs.305.6-8.546

DOI
10.2475/ajs.305.6-8.546
Journal article

Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Ocean

Capone, D. G., Burns, J. A., Montoya, J. P., Subramaniam, A., Mahaffey, C., Gunderson, T., . . . Carpenter, E. J. (2005). Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic Ocean. Global Biogeochemical Cycles, 19(GB2024).

Journal article

2004

Physical supply of nitrogen to phytoplankton in the Atlantic Ocean

Mahaffey, C., Williams, R. G., Wolff, G. A., & Anderson, W. T. (2004). Physical supply of nitrogen to phytoplankton in the Atlantic Ocean. GLOBAL BIOGEOCHEMICAL CYCLES, 18(1). doi:10.1029/2003GB002129

DOI
10.1029/2003GB002129
Journal article

2003

Biogeochemical signatures of nitrogen fixation in the eastern North Atlantic

Mahaffey, C., Williams, R. G., Wolff, G. A., Mahowald, N., Anderson, W., & Woodward, M. (2003). Biogeochemical signatures of nitrogen fixation in the eastern North Atlantic. GEOPHYSICAL RESEARCH LETTERS, 30(6). doi:10.1029/2002GL016542

DOI
10.1029/2002GL016542
Journal article