Joined ERI: December 2006

Background

• MChem (Hons) Chemistry – University of York (1996-2000)

• PhD ‘Pigments of photoautotrophs in lake sediments from the Larsemann Hills, east Antarctica’ – University of York (2000-2004)
  
• Assistant Research Scientist – University of Maryland (2004-2006)

Research Interests

• Organic geochemistry
  
• Marine protein cycling
  
• Analytical chemistry
  
• Mass spectrometry
  

Selected Publications

Hodgson, Dominic A., E. Verleyen, A.H. Squier, K. Sabbe, B.J. Keely, K.M. Saunders, W. Vyverman, 2006. Interglacial environments of coastal east Antarctica: comparison of MIS 1 (Holocene) and MIS 5e (Last Interglacial) lake-sediment records. Quaternary Science Reviews 25 (1-2):179 – 197.

Hodgson, Dominic A., E. Verleyen, K. Sabbe, A.H. Squier, B.J. Keely, M.J. Leng, K.M. Saunders and W. Vyverman, 2005. Late Quaternary climate-driven environmental change in the Larsemann Hills, East Antarctica, multi-proxy evidence from a lake sediment core. Quaternary Research 64 (1):83 – 99.

Hodgson, Dominic A., W. Vyverman, E. Verleyen, P.R. Leavitt, K. Sabbe, A.H. Squier and B.J. Keely, 2005. Late Pleistocene record of elevated UV radiation in an Antarctic lake. Earth and Planetary Science Letters 236 (3-4):765 – 772.

Squier, Angela H., D.A. Hodgson, B.J. Keely, 2005. Evidence of late Quaternary environmental change in a continental east Antarctic lake from lacustrine sedimentary pigment distributions. Antarctic Science 17 (3):361 – 376.

Hodgson, Dominic A., W. Vyverman, E. Verleyen, K. Sabbe, P.R. Leavitt, A. Taton, A.H. Squier and B.J. Keely, 2004. Environmental factors influencing the pigment composition of in situ benthic microbial communities in east Antarctic lakes. Aquatic Microbial Ecology 37 (3):247 – 263.

Squier, Angela H., R.L. Airs, D.A. Hodgson and B.J. Keely, 2004. Atmospheric pressure chemical ionisation reversed-phase liquid chromatography/mass spectrometry of the ultraviolet screening pigment scytonemin: characteristic fragmentations. Rapid Communications in Mass Spectrometry 18 (23): 2934 – 2938.

Squier, Angela H., D.A. Hodgson and B.J. Keely, 2004. Identification of bacteriophaeophytin a esterified with geranylgeraniol in a Antarctic lake sediment. Organic Geochemistry 35 (2):203 – 207.

Squier, Angela H., D.A. Hodgson and B.J. Keely, 2004. A critical assessment of the analysis and distributions of scytonemin and related UV screening pigments in sediments. Organic Geochemistry 35 (11-12):1221 – 1228.

Squier, Angela H., D.A. Hodgson and B.J. Keely, 2004. Structures and profiles of novel sulfur-linked chlorophyll derivatives in an Antarctic lake sediment. Organic Geochemistry 35 (11-12):1309 – 1318.

Squier, Angela H., D.A. Hodgson and B.J. Keely, 2003. Identification of novel sulfur-containing derivatives of chlorophyll a in a Recent sediment. Chemical Communications (5):624 – 625.

Talbot, Helen M., A.H. Squier, B.J. Keely and P. Farrimond, 2003. Atmospheric pressure chemical ionisation reversed-phase liquid chromatography/ion trap mass spectrometry of intact bacteriohopanepolyols. Rapid Communications in Mass Spectrometry 17 (7):728 – 737.

Squier, Angela H., D.A. Hodgson and B.J. Keely, 2002. Sedimentary pigments as markers for environmental change in an Antarctic lake. Organic Geochemistry 33 (12):1655 – 1665.

Walker, J. Stuart, A.H. Squier, D.A. Hodgson and B.J. Keely, 2002. Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments. Organic Geochemistry 33 (12):1667 – 1674.

Selected Presentations

Applying proteomics to Geochemistry: tracking protein degradation using liquid chromatography-tandem mass spectrometry
Ocean Sciences Meeting – Honolulu HI, USA 2006

Novel sulfur-containing transformation products of chlorophyll a in marine sediments
International Estuarine Biogeochemistry Symposium – Solomons MD, USA 2004

Bacteriochlorophyll distributions in Antarctic lake sediments
Tetrapyrrole Discussion Group – Leeds, UK 2003

Pigment biomarkers from sediments of an Antarctic lake spanning a subglacial period
American Chemical Society – New Orleans LA, USA 2003;
International Limnogeology Congress – Tucson AZ, USA 2003

Identification and distribution of the UV-screening pigment scytonemin in the sediment of an Antarctic lake
International Meeting on Organic Geochemistry – Krakow, Poland 2003

APCI-LC/MSn of sedimentary pigment distribution from an Antarctic lake
British Organic Geochemistry Society – Newcastle upon Tyne, UK 2002

APCI-LC/MSn of sedimentary pigments from an Antarctic lake: identification of low abundance secondary homologues of bacteriochlorophylls c and d
British Mass Spectrometry Society – Loughborough, UK 2002

Sedimentary pigments as indicators of environmental change in an Antarctic lake
International Meeting on Organic Geochemistry – Nancy, France 2001

Fossil pigments as markers for environmental change in Antarctic lakes
British Organic Geochemistry Society – Bristol, UK 2000

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