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From: Mark Costello <markcost@gmail.com>
Date: 24.2.2008 23:07
Subject: PhD studentship, Cambridge UK
To: MARINE-B@listserv.heanet.ie
PhD Studentship
Calcified marine invertebrates: the effects of ocean acidification
Supervisors:
Dr Melody Clark (BAS, Cambridge)
Prof Lloyd Peck (BAS, Cambridge)
Dr Elizabeth Harper (University of Cambridge, Earth Sciences).
Collaborators:
D Barnes and S Morley (BAS), J Hoffman (University of Cambridge)
Funding is already secured for this studentship. The NERC award for the
2008-09 year will be �12,940. For more information, see
http://www.nerc.ac.uk/funding/available/postgrad/awards/, and for
eligibility see
http://www.nerc.ac.uk/funding/available/postgrad/eligibility.asp.
There is currently great concern over the acidification of the World's
oceans. In the 250 years since the onset of the industrial revolution,
atmospheric CO2 levels have risen from 280 to 381 ppm and as a consequence,
ocean pH has fallen from an average 8.16 to 8.05. Human-driven emissions of
CO2 continue to rise at accelerating rates and within the last year or so
have begun to outstrip even the most pessimistic of IPCC model scenarios.
How will life in the oceans adapt to this changing environment? Concern has
been particularly expressed about those organisms with heavily calcified
skeletons or shells (echinoderms and molluscs), as the ability to extract
carbonate ions from sea water and incorporate into skeletal matrices will be
compromised as pH decreases.
The aim of this PhD is to study the effect of predicted ocean acidification
scenarios on biomineralization processes and survival in a range of
Antarctic marine invertebrates. It will
combine ecological and experimental observation of invertebrates containing
skeletons/shells composed of differing calcium contents and solubilities
from different sea depths using a number of techniques including
thermogravimetrics, SEM, X-Ray diffraction, physiology and molecular
genetics. Experimental manipulations of sea water pH will be carried out and
the effect studied in a range of echinoderms and molluscs at both the adult
and larval stages.
This NERC PhD studentship is linked with the BAS core science project
"Biological Responses to Extreme Antarctic Conditions and Hyper-extremes
(BIOREACH) within the programme "Biodiversity, Function, Limits and
Adaptation from Molecules to Ecosystems (BIOFLAME) that examines how the
genomes of different species influence their responses to environmental
variation and change at the level of individuals, populations, communities
and ecosystems. The student will be based at the British Antarctic Survey in
Cambridge but will spend time at the Department of Earth Sciences at the
University of Cambridge. Fieldwork is not currently planned during the
studentship. The ideal student will have an excellent degree in a relevant
subject. Experience in physiology and analytical work would be an advantage
as would a strong interest in genetics.
For further details about the British Antarctic Survey please see:
http://www.antarctica.ac.uk <http://www.antarctica.ac.uk/>
Applicants should include a cover letter, a CV and the e-mails of two
referees.
Closing date for applications: 13 March 2008
Applications and enquiries should be addressed to:
Dr Melody Clark
British Antarctic Survey
High Cross, Madingley Road
Cambridge, CB3 0ET, UK
Email: mscl@bas.ac.uk
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