Dr. Rachel Jeffreys
Post-doctoral researcher Marine Ecology		Deep-sea ecology Trophic dynamics Food quality Ecosystem Functioning Cold-water corals Oxygen minimum zones Benthic faunal biochemistry
Rachel.Jeffreys@nioz.nl +31(0)222-369494 +31(0)222-319674
Visiting address:	Postal address:	CV Research Interests Projects Links Downloads Selected Publications
Landsdiep 4 NL-1797 SZ 't Horntje (Texel) The Netherlands   Tel. (+31) (0)222-369300 Fax: (+31) (0)222-319674	P.O. Box 59, NL-1790 AB Den Burg The Netherlands

 

CV	Top ^
Personal
Family name     First name(s) Date of birth Place of birth	Jeffreys Rachel 21 October 1979 Bridgend, United Kingdom.
Education
2006   2002	PhD Earth and Ocean Science, University of Liverpool, UK BSc Oceanography and Marine Biology, University of Southampton, UK.
Prizes & Grants
2008	Trophic relationships of benthic fauna at the Oman Margin: the impact of mass jelly falls. NERC funded in collaboration with Drs. G. Wolff, D. Billett & E. Fisher.
Employment record
2008-2011   2006-2007     2002-2006	Post-doc at NIOZ (Biodiversity and Ecosystem Functioning in the Deep-Sea) Post-doc at University of Aberdeen, UK (Rates and pathways of carbon turnover at the abyssal seafloor: a long-term, in situ experimental study). PhD student at University of Liverpool (Influence of Environmental Conditions on Biogeochemical Processes in the Arabian Sea: Oxygen and Benthos.)

 

Research Interests	Top ^
I am interested in deep-sea ecology in a variety of habitats from polar continental shelves to cold water corals to reducing environments e.g. oxygen minimum zones. I try to understand the relationship between biological activity and ecosystem functioning using a biochemical approach, specifically: ·         Determination of trophic ecology/dynamics using stable isotope analyses. ·         Examination of resource partitioning within benthic megafauna using biochemical analyses e.g. lipid and pigment biomarkers ·         Elucidation of organic matter quality using a biochemical approach ·         Use of lander technology to examine trophodynamics of deep-sea scavengers ·         Trophic ecology of cold-water corals

 

Projects	Top ^
Biodiversity and ecosystem functioning in contrasting southern European deep-sea environments: from viruses to megafauna (funded by ESF, NWO). Coralfish/HERMIONE: Hopspot ecocsystem research and man’s impact on European seas (funded by European Commission). Trophic relationships of benthic fauna at the Oman Margin: the impact of mass jelly falls (NERC, UK).

 

Link	Top ^
Electronic copy of my PhD Thesis

 

Downloads	Top ^

 

Selected Publications	Top ^
·         Jeffreys, R.M. Wolff, G.A.& Cowie, G.L. (2009) Influence of oxygen on heterotrophic reworking of sedimentary lipids at the Pakistan Margin. Deep-Sea Research II ·         Gooday, A.J., Levin, L.A., Aranda da Silva, A., Bett, B.J., Cowie, G.L., Dissard, D., Gage, J.D., Hughes, D.J., Jeffreys, R.M., Lamont, P.L., Larkin, K.E., Murty, S.J., Schumacher, S., Whitcraft, C. & Woulds, C. (2009) Faunal responses to oxygen gradients on the Pakistan margin: Acomparison of foraminiferans, macrofauna and megafauna. Deep-Sea Research II ·         Mincks, S.L., Smith, C.R., Jeffreys, R.M. & Sumida, P.Y.G. (2008) Trophic structure on the West Antarctic Peninsula shelf: Detritivory and benthic inertia revealed by d13C and d15N analysis. Deep-Sea Research II 55: 2502-2514. ·         Woulds, C., Cowie, G.L., Levin, L.A., Andersson, J.H., Middelburg, J.J., Vandewiele, S., Lamont, P.A., Larkin, K.E., Gooday, A.J., Schumacher, S., Whitcraft, C., Jeffreys, R.M., Schwartz, M. (2007) Oxygen as a control on seafloor biological communities and their roles in sedimentary carbon cycling. Limnology and Oceanography 52(4): 1698-1709.