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NOC Ocean Acidification Researchers
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Dr Duncan A Purdie
Coccolithophores, ecosystem dynamics, in-situ dissolution of CaCO3.
Prof Eric Achterberg
Changes in ocean chemistry as a result of enhanced
carbon dioxide take up by the ocean, and implications to ecosystems.
We are developing and deploying novel systems to determine ocean pH and DIC. In addition other carbonate parameters are determined routinely (alkalinity, DIC; using standard techniques) on research cruises and ships of opportunity in all parts of the Atlantic Ocean. We are investigating the influence of changing ocean pH on metal speciation and bioavailability; these studies are undertaken using laboratory studies and model simulations.
Dr Chris Hauton
Effects of CO2-driven seawater acidification on the ecophysiology of neritic calcifiers, using the amphipod Gammarus locusta as a model
This project is using laboratory-based mesocosms to culture amphipods, Gammarus locusta, at elevated pCO2. G. locusta are being reared at elevated pCO2 from newly hatched juveniles through to sexually mature adults. Regular assessments of growth will be made and compared with measurements of the expression of genes coding for a 70kDa heat shock protein (HSP70) and the metabolic enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH). Dissolved CO2 in each mesocosm will be inferred from pH and alkalinity which will be measured using the VINDTA method.
Dr Andrew Yool
Open ocean ecosystem modelling; earth system modelling. Modelling of ocean acidification effects on pH and ocean carbonate chemistry in global models such as GENIE and OCCAM.
Dr Debora Iglesias-Rodriguez
Effect of CO2 on coccolithophore ecological success and physiology; effect of CO2 on marine echinoderm larval development. Laboratory and deck incubations of coccolithophores and echinoderm larvae at varying CO2 concentrations.
Dr Toby Tyrrell
Ecology of coccolithophores including potential for control by carbonate chemistry. Long-term elevation of atmospheric CO2 as a legacy of ocean acidification. Ocean biogeochemistry during extreme events in Earth’s ancient past such as across the E/O boundary. Seasonal and geographical variations in carbonate chemistry from measurements and data synthesis.
Dr Heiko Palike, Prof Paul Wilson, Kirsty Edgar :
Otudying ocean acidification events in the Earth’s past, for instance by looking at how %CaCO3 in sediment cores changed at certain times during Earth’s history.
Darryl Green
Use of inductively coupled plasma - optical emission spectrometer (ICP-OES) to accurately quantify shell CaCO3 contents.
Dr Matt Mowlem
Currently developing sensors for pH, interested in ideas for alkalinity and pCO2 sensors.
Nadia Suarez-Bosche
Impact of ocean acidification on development of starfish and sea urchin larvae
Dr Sam Gibbs
The biotic response to rapid climate change events with particular focus on the effect of ocean acidification on calcareous nannoplankton. Key intervals of geological time include the hyperthermal events in the Eocene, in particular the PETM and the ETM-2 by documenting high-resolution ecological, evolutionary and calcification impacts.
Dr Richard Sanders
Effect of Ocean acidification on carbon export fluxes (via ballast effect).
Cynthia Dumousseaud
How acidic are the oceans? How does pH affect plankton blooms?
Determination of the carbonate system in the ocean through measurements of Dissolved Inorganic Carbon (DIC), Total Alkalinity (TA) and (particularly) pH measurements of surface seawater. Development of a spectrophotometric pH system
Dr Denise Smythe-Wright
The effect of increasing CO2 concentrations on the natural production of trace gases.
We have been growing phytoplankton in culture at elevated (760 ppm) carbon dioxide concentrations. Results suggest that at these levels there are marked increases in the natural production of halogenated trace gases over those seen in cultures grown at 340 ppm. There are also distinct differences in the pH of the culture solutions.
Sue-Ann Watson
The effect of ocean acidification on molluscan (oyster) larval development.
I will rear oyster larvae at seawater of elevated CO2 levels to simulate the effect of anthropogenic CO2 on the growth and development of marine molluscs. Work to be done at the James Cook University, Queensland, Australia as a collaborative project between NOC, BAS and JCU Oct 2007-Jan 2008.
Prof John Shepherd FRS
Development and application of intermediate complexity models of the Earth climate system, including their use to study ocean acidification.
Co-author of Royal Society report on ocean acidification (2005).
Dr David Hydes
Changing oceanic concentrations of CO2 and other carbonate parameters that determine the acidity of seawater are being measured from ships of opportunity. This work is key to determining the extent to which acidity changes both with location and time of year. It provides a baseline against which long term changes in acidity can be assessed. Measurements are being made from the MV Pacific Celebes which trades on global route out of Singapore and between Portsmouth and Bilbao (some by Charlie Bargeron).
Dr Val Byfield, Dr Peter Challenor, Dr John Hemmings, Dr Susanne Fangohr, Dr David Cromwell
Use of Earth Observation data to characterise physical controls on air-sea transfer of carbon dioxide as part of the CASIX (Centre for observation of Air-Sea Interactions & fluXes) programme).
Dr Margaret Yelland
Direct measurements of the air-sea CO2 flux with the aim of improving the parameterisation of the gas transfer velocity
Dr Stuart Cunningham
Calculation of (anthropogenic) carbon fluxes across 24N in the Atlantic. Fluxes can be calculated in 1992, 1998, 2004 from direct measurements made in those years, allowing the three years to be compared (in collaboration with Pete Brown, Andy Watson and Ute Schuster at UEA).
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