----- Edelleenlähetetty viesti lähettäjältä Jouni Leinikki jouni.leinikki@alleco.fi ----- Päiväys: Mon, 25 Feb 2008 08:52:49 +0200 Lähettäjä:Jouni Leinikki jouni.leinikki@alleco.fi Vastausosoite:Jouni Leinikki jouni.leinikki@alleco.fi Otsikko: Fwd: PhD studentship, Cambridge UK Vastaanottaja: tutkimussukeltajat@sci.fi
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---------- Forwarded message ---------- 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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