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Validation of alternative marine calcareous skeletons as recorders of global climate change (CALMARS)

Research project EV/04 (Research action EV)

Persons :

Description :

Context

Five Belgian Institutions (the Royal Belgian Institute of Natural Sciences: Department of Invertebrates (RBINSc); the Royal Museum for Central Africa, Section of Mineralogy, Petrography and Geochemistry (MRAC); Université Libre de Bruxelles, Laboratoire de Biologie Marine (ULB); Vrije Universiteit Brussel, Laboratory of analytical Chemistry and Laboratory of Isotope Geochemistry (VUB); University of Antwerp, Ecophysiology, Biochemistry and Toxicology Unit, Department of Biology (UA)) have set up a project to validate the use of CALcareous MARine Skeletons as recorders of global climate changes.

Potential recorders have been selected among three taxa: sclerosponges, bivalves, and echinoderms, for their contrasted characteristics: lifetime, growth rate, and mineralisation features. Areas of interest spread from the North East Atlantic Ocean to the Caribbean.


Project description

Objectives

The potential as environmental recorders of sclerosponges, bivalves, and echinoderms is well known, and the originality of CALMARS rather resides in three new perspectives.
- the comparative analysis of contrasted taxa will sustain the validity of the recorded global changes;
- laser ablation technology will ensure day to seasonal resolution depending of the taxon used;
- focus will go to a better understanding of the pathways of proxy incorporation and on the relative controls by environmental and physiological conditions, emphasising on reconstruction of sea surface temperature (SST), salinity, phytoplankton biomass and productivity, and trace metal content.

Methodology

CALMARS approach is based on a combination of field and laboratory work. Field work consists in regular samplings of each group at a few selected sites in both tropical and temperate settings (North Sea & Scheldt, Norway, Jamaica and Kenya) where long-term monitoring of environmental conditions is carried out to follow up the recording of seasonal variations in the skeleton. Single samplings along environmental gradients are also performed in order to assess the recording of latitudinal variations. Specimens preserved in museums will help to extend data in time and localities. Proxies studied are Mg, Sr, Ba, Cd, Mn, U, B, Pb, Zn and O13Ccarb, O18Ocarb, using laser ablation ICP-MS in order to gain a high time resolution. Effects of environmental parameters are tested for each group under experimental conditions (in situ with incubation chambers or in aquarium). Impact of ambient substrate concentrations and physico-chemical conditions are also studied in controlled in-vitro experiments, during which incorporation of proxy are followed after radioactive and stable isotope spiking to ascertain results obtained along naturally occurring gradients.

Link with International Programmes

Paleo-oceanographic studies of climate change to modern-day analyses of pollution impacts.

Expected results and/or products

CALMARS aims at improving and extending the records of global change in the oceanic domain with a peculiar interest for the climate databases. Through a network of biologists and geochemists of complementary experience, CALMARS intends to:

1) better validate the existing proxies by a thorough experimental investigation of the physiological and environmental factors that interplay to control the proxy incorporation within the various existing mineralogical types of biogenic carbonates;

2) refine the existing records by improving the recently developed analytical tools and generating very-high resolution records of the validated proxies;

3) greatly enlarge the application scales of these proxies by a direct comparison of different biological taxa under contrasted tropical and temperate settings from the North Atlantic ocean.
From this, CALMARS expects to generate robust high-resolution time series of several tracers which are of prime importance to better simulate the carbon cycle and will therefore be used by other research networks to understand present day global change and predict future changes;

4) develop algorithms for climatic and environmental change from proxy records.

Development of educational aspects from this research is planned by creating and regularly updating a web-site, describing the main lines of the research. A scientific film and/or a didactic CD-ROM produced by the pedagogic staffs from the two involved federal scientific institutions (IRSNB and MRAC) are also planned.

Partners

Activities

RBINSc has a long experience on Caribbean sclerosponges (ultra-structure and in situ growth rate measurement). Fieldwork is conducted at the Discovery Bay Marine Laboratory, Jamaica.

ULB has a large experience in biomineralisation processes of echinoderms through morphological, biochemical, physiological and environmental approaches, both in the field and in the laboratory.

UA performs research on bioavailability, bioaccumulation and effects of metals in aquatic organisms and studies effects of environmental conditions on kinetics of metal accumulation.

MRAC and VUB-ANCH have developed together expertise for trace element analysis by ICP-MS and Laser Ablation ICP-MS.

VUB-GISO has a long-standing experience in stable isotope geochemistry as applied to climate change.


Users Committee

G. Demarée, Royal Meteorological Institute, Risk Analysis and Sustainable Development.

M. Depoortere, Federal Council for Sustainable Development

G. Munhoven, Laboratoire de Physique Atmosphérique et Planétaire, Institut d'Astrophysique et de Geophysique, Université de Liège.

J.-P. van Ypersele, Université Catholique de Louvain, Institut d'Astronomie et de Géophysique Georges Lemaître, (UCL-ASTR).

Documentation :

Validation of alternative marine calcareous skeletons as recorders of global climate changes (calmars) : final report  Willenz, Philippe - Berry, Lorraine - Dehairs, Frank ... et al  Brussels : Belgian Science Policy, 2006 (SP1606)
[To download]  [To order] 

Bibliografic references :

A comparison of static and dynamic models of metal accumulation and toxicity in aquatic organisms.   Blust, R.  International Seminar on Exposure and Effects Modelling in Environmental Toxicology - Joint Setac UIR seminar, 4-7 February 2002, University of Antwerp, Belgium., 2002 

An improved Multiple Internal Standard Calibration for LA-ICP-MS measurements.  De Ridder F., R. Pintelon, J. Schoukens, J. Navez, L. André and F. Dehairs  Proceedings 2nd international conference on high-resolution sector field ICP-MS 12-15/9/2001, Vienna., 2001 

An Improved Multiple Internal Standard Normalisation for drift in LA-ICP-MS Measurements.  De Ridder, F., R. Pintelon, J. Schoukens, J. Navez, L. André and F. Dehairs  Journal of Analytical Atomic Spectrometry 17(11)., 2002 

An Improved Multiple Internal Standard Normalisation for Drift in LA-ICP-MS Measurements.  De Ridder F, R. Pintelon, J. Schoukens, L. André, F. Dehairs  Ocean Sci. Meet. Suppl. - Eos Transactions of the American Geophysical Union, 84(52)., 2004 

An improved multiple internal standard normalisation for the drift in LA-ICP-MS measurements.  De Ridder F., R. Pintelon, J. Schoukens, J. Navez, L. André and F. Dehairs  Proceedings 6th European Laser ablation ICP-MS workshop, 24-25 June, 2002, Utrecht., 2002 

Assessing the reproducibility and reliability of estuarine bivalve shells (Saxidomus giganteus) for sea surface temperature reconstruction: implications for paleoclimate studies.   Gillikin, D. P., F. De Ridder, H. Ulens, M. Elskens, E. Keppens, W. Baeyens and F. Dehairs  Palaeogeography Palaeoclimatology Palaeoecology doi:10.1016/j.palaeo.2005.03.047, 2005a 

Barium in mussel shells: a proxy of environmental conditions?   Steenmans, D., D.P. Gillikin, F. Dehairs, W. Baeyens, J. Navez, L. André, E. Keppens, and the CALMARS Group  International Paleo-environments Symposium (QRA2004), Brussels, Belgium, 15-17 September. , 2004 

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction.  Gillikin, D. P., F. Dehairs, A. Lorrain, D. Steenmans, L. André, J. Navez and W. Baeyens  Geochimica et Cosmochimica Acta 70., 2006 (!) 

Barium uptake into the shells of the common mussel (Mytilus edulis): results from a field and laboratory experiment  Gillikin, D.P., F. Dehairs, D. Steenmans, A. Lorrain, L. André, J. Navez, W. Baeyens and the CALMARS Group  EGU General Assembly 2005, Vienna, Austria.- Geophysical Research Abstracts, Vol. 7 , 2005 

Biological validation of calcified sponges as recorders of climate change: following uptake of trace elements using X-ray microanalysis  Berry, L.S. , Willenz, Ph. & the CALMARS group Proceedings of the 13th European Microscopy Congress. Schryvers, D. & Timmermans, J.-P. (Eds), Vol. 3 (Life Sciences) , 2004 

Bivalves as environmental archives  Gillikin, D.P., Steenmans, D., Meng, L., Haifeng, T., Ulens, H., Dehairs, F., Baeyens, W., Navez, J., André, L., Keppens, E. and the CALMARS GroupMees, J.; Seys, J. (Eds.) (2004).  Mees, J.; Seys, J. (Eds.) (2004). VLIZ Young Scientists' Day, Brugge, Belgium 5 March 2004: book of abstracts. VLIZ Special Publication, 17, 2004 

Calibration and validation of the mussel Mytilus edulis as an environmental archive.  Gillikin, D. P., D. Steenmans, F. Dehairs, W. Baeyens, J. Navez, L. André, E. Keppens, and the CALMARS Group EGU General Assembly, Nice, France, 26 - 30 April 2004., 2004 

Calibration of Caribbean Sclerosponges to their Ambient Environment: Indirect and Direct Methods.  Rosenheim, B.E., Swart, P.K., Willenz, Ph., Thorrold, S. & Eisenhauer, A.  Eos Transactions of the American Geophysical Union, 83(47). , 2002 

Can bivalves be used as archives of anthropogenic carbon input to the marine environment?   Meng, L. M.Sc. Thesis Vrije Universiteit Brussel, Belgium. Promoter: F. Dehairs; Co-promoter: D.P. Gillikin., 2004 

Can wood anatomy and carbon isotope ratio reveal stress factors in the mangrove Rhizophora mucronata Lamk.?   Verheyden A., F. De Ridder, H. Beeckman and N. Koedam  The 13th FESPP (Federation of European Societies of Plant Physiology) congress, September, 1-6 2002, Heraclion, Greece., 2002 

Decoding Nonlinear Growth Rates in Annually Resolved Archives.  De Ridder, F., R. Pintelon , J. Schoukens, D.P.Gillikin, L. André, W. Baeyens, A. de Brauwere, F. Dehairs and the CALMARS group  EGU General Assembly 2005, Vienna, Austria. - Geophysical Research Abstracts, Vol. 7, 2005 

Decoding Non-linear Growth Rates in Biogenic Archives.  Ridder, F., Pintelon, R., Schoukens, J., Gillikin, D. P., Andre, L., Baeyens, W., Dehairs, F. Ocean Sci. Meet. Portland, OR, Suppl. - Eos Transactions of the American Geophysical Union, 84(52)., 2005 

Decoding Non-linear Growth Rates in Biogenic Environmental Archives.  De Ridder, F., R. Pintelon, J. Schoukens, D. P. Gillikin, L. André, W. Baeyens, A. de Brauwere and F. Dehairs Geochemistry, Geophysics, Geosystems 5, Q12015, doi:10.1029/2004GC000771., 2004 

Do echinoderms store temperature changes in their skeleton?   Ranner H., O. Ladriére, J. Navez, L. André, D. Gillikin, E. Keppens, P. Dubois and the CALMARS group  EGU General Assembly 2005, Vienna, Austria.- Geophysical Research Abstracts, Vol. 7 , 2005 

Do Marine Bivalve Shells Record Paleo-Productivity?   Steenmans, D. M.Sc. Thesis. Vrije Universiteit Brussel, Belgium.- Promoter: F. Dehairs; Co-promoter: D.P. Gillikin. , 2004 

Dynamic models for metal accumulation under ecologically realistic exposure scenarios.  Blust, R., Steen-Redeker, E., Van Campenhout, K., Bervoets, L.  Proceedings 12th Annual Meeting of SETAC-Europe: Challenges in Environmental Risk Assessment and Modelling. 12-16 May 2002, Vienna, Austria. , 2002 

Effects of temperature on the chemistry of the echinoderm skeleton  Ranner, H. Ph.D. Thesis. Université Libre de Bruxelles, due December 2005 

Effects of temperature on the chemistry of the echinoderm skeleton.   Ranner, H., Ladrière, O., Navez, J., André, L., Gillikin, D., Keppens, E., Dubois, Ph. and the CALMARS Group  Proceedings International Paleo-environments Symposium (QRA2004), Brussels, Belgium, 15-17 September. , 2004 

Effects of temperature on the chemistry of the echinoderm skeleton.   Ranner, H., Ladrière, O., Navez, J., André, L., Gillikin, D., Keppens, E., Dubois Ph. and the CALMARS Group (2004).  Proceedings Gordon Research Conference on Biomineralization, Colby-Sawyer College, New London, NH, USA , 2004 

Effects of temperature on the skeletal composition of the starfish Asterias rubens (L.) (Asteroidea, Echinodermata)  Ladrière, O.  M.Sc. Thesis Université Libre de Bruxelles, Belgium.- Promotor: Ph. Dubois, Mentor: H. Ranner., 2004 

Environmental conditions of the Belgian coastal area over the past millennium from Mytilus edulis shells: preliminary results.   Meert I., D. P. Gillikin, F. Dehairs, A. Ervynck, B. Hillewaert, E. Keppens and the CALMARS Group.  EGU General Assembly 2005, Vienna, Austria. - Geophysical Research Abstracts, Vol. 7, 2005 

Evolution of spatial variability of heavy metals in mussels (Mytilus edulis L.) in the Scheldt estuary (1996-2002).   Mubiana, V.K., Qadah, D., Blust, R.  Proceedings Ecological Structures and Functions in the Scheldt Estuary: from past to future. 7-10 October, Antwerp, Belgium., 2002 

Exploring the uptake pathways of calcium and some trace elements in the marine bivalve, Mytilus edulis using isolated gill tissues.   Mubiana V.K., R. Blust and the CALMARS Group (2005).  EGU General Assembly 2005, Vienna, Austria - Geophysical Research Abstracts, Vol. 7., 2005 

Geochemistry of Marine Bivalve Shells: the potential for paleoenvironmental reconstruction. Ph.D. thesis. Vrije Universiteit Brussel, Belgium, 258 p.   Gillikin, D.P.  Ph.D. Thesis. Vrije Universiteit Brussel, Belgium., 2005 

Geochemistry of Sclerosponges and Bivalves  Verheyden S., D. Gillikin, V. Vandeginste, F. De Ridder, J. Navez, L. André, F. Dehairs and E. Keppens  Geologica Belgica International Meeting, 2002 

High resolution Ba/Ca profiles in the shells of the calcitic bivalve Pecten maximus.   Lorrain, A., Barats, A., Paulet, Y-M., Chauvaud, L., Amouroux, A., Pécheyran, C., André, L.  Proceedings ASLO 2005 Summer Meeting, June 19 – 24, Santiago de Compostela, Spain., 2005 

High-resolution Sr/Ca records in sclerosponges calibrated to temperature in situ.  Rosenheim, B.E., P.K. Swart, S.R. Thorrold, Ph. Willenz, L. Berry and C. Latkoczy  Geology 32(2), 2004 

High-resolution time series of vessel density in Kenyan mangrove trees reveal link with climate.   Verheyden, A., F. De Ridder, N. Schmitz, H. Beeckman and N. Koedam  New Phytologist. 167, 2005 

Identification of the Time Base in Environmental Archives  De Ridder, F. , A. De Brauwere, R. Pintelon, J. Schoukens, F. Dehairs Fall Meet. San Francisco, CA, Suppl. - Eos Transactions of the American Geophysical Union, 85(46)., 2004 

Identification of the time base in environmental archives.   De Ridder, F.  Ph.D. Thesis, Vrije Universiteit Brussel, Belgium., 2004 

Indications of Regulation on Copper Accumulation in the blue Mussel Mytilus edulis.  Lorenzo J.I., Beiras R., Mubiana V.K., Blust R.  Proceedings 4th International Conference on Molluscan Shellfish Safety, Santiago de Compostela, Spain. , 2002 

Insights into the Skeletal Growth Pattern of the Hypercalcified Sponge Petrobiona massiliana  Berry, L., Sivel, V , Zandberen, H., Willenz, Ph. and the CALMARS Group EGU General Assembly 2005, Vienna, Austria. - Geophysical Research Abstracts, Vol. 7, 2005 

Inter- and intra-annual variations of Pb/Ca ratios in clam shells (Mercenaria mercenaria): a record of anthropogenic lead pollution?  Gillikin, D. P., F. Dehairs, W. Baeyens, J. Navez, A. Lorrain and L. André . Inter- and intra-annual variations of Pb/Ca ratios in clam shells (Mercenaria mercenaria): a record of anthropogenic lead pollution? Marine Pollution Bulletin 50., 2005 

Internal normalisation in LA-ICP-MS & Non-linear growth rates in biota.  De Ridder F., A. Verheyden, Ph. Willenz, F. Dehairs, J. Schoukens, R. Pintelon  Proceedings AP V/22 study day, November 26, 2002, Louvain-La-Neuve. , 2002 

Les squelettes calcaires, archives d’un passé proche des océans.  Willenz, Ph., L. André, F. Dehairs Ph. Dubois, R. Blust & the CALMARS Group Science Connection. II.05, 2006 

Metal speciation dynamics and bioavailability: Case studies for metal uptake by bivalves and fish.  Janssen, S., Van Leeuwen, H.P and Blust, R. Environmental Science and Technology, 36: 2164-2170.  Environmental Science and Technology, 36, 2002 

Modelling the effects of salinity, temperature and complexation on the uptake and accumulation of heavy metals in the marine bivalve Mytilus edulis.   Mubiana, V.K., Vercauteren, K., Blust, R.  Proceedings 13th Annual Meeting of The Society of Environmental Toxicology and Chemistry (SETAC Europe), Hamburg, Germany., 2003 

Models for the bioaccumulation of metals in aquatic organisms. In Metal and Eadionuclides Bioaccumulation in Aquatic Organisms  Blust, R. CIESM Workshop Monographs n°19, 2003 

Modified AIC and MDL model selection criteria for short data records.  De Ridder, F., R. Pintelon, J. Schoukens and D. P. Gillikin  IEEE Transactions on Instrumentation and Measurement 54(1), 2005 

Non-Linear Growth Rates of marine calcareous organisms and the problem of decoding the recorded environmental change signal  De Ridder F., J. Schoukens, R. Pintelon, W. Baeyens, L. André and F. Dehairs  VLIZ Jongerencontactdag 2003, 2003 

Reconstructing the environmental conditions in the coastal area of the Southern Bight over the past millennium using Mytilus edulis shells.  Meert, I., D. P. Gillikin, A. Ervnyk, B. Hillewaert, E. Keppens, F. Dehairs  Mees, J.; Seys, J. (Eds.) (2005). VLIZ Young Scientists' Day, 25 February 2005: book of abstracts. VLIZ Special Publication, 20., 2005 

Recording of environmental conditions in the skeleton of Asterias rubens (L.) (Asteroidea, Echinodermata)  de Jonghe, C.  Lic. Thesis Université Libre de Bruxelles, Belgium.- Promotor: Ph. Dubois, Mentor: H. Ranner., 2002 

Recording of environmental parameters in the skeleton of Asterias rubens and Sphaerechinus granularis  Ranner, H., de Jonghe, C., Monin, L., Navez, J., André, L., Gillikin, D., Keppens, E., Dubois Ph. and the CALMARS Group  Proceedings 11th International Echinoderm Conference, Munich 2003, 2003 

Reduction of the disturbing noise in the calibration of LA-ICP-MS measurements.  De Ridder F., R. Pintelon, J. Schoukens, J. Navez, L. André and F. Dehairs  Proceedings 3rd international chemometrics research meeting., 2002 

Reduction of the Gibbs phenomenon applied on Non-harmonic Time Base Distortions  De Ridder, F., R. Pintelon, J. Schoukens and A. Verheyden IEEE Transactions on Instrumentation and Measurement 54(1)., 2005 

Regional and water depth lead trends in sclerosponges  Verheyden, S., B. Rosenheim, S. Thorrold, D. Langlet, P. Swart, Ph. Willenz, D.P. Gillikin, J. Navez and L. André  Earth and Planetary Science Letters., (Submitted) 

Relationship between Biomarker Responses and Metal Bioaccumulation in Mytilus edulis.  Wepener, V., Bervoets, L., Mubiana, V.K., Blust, R.  37th Annual Conference of the Southern African Society of Aquatic Scientists (SASAqS), July 2002, Bloemfontein, S. Africa. , 2002 

Role of free metal ions and complexes in metal uptake by aquatic invertebrates and fish.  Blust, R., Lorenzo, J., Mubiana, V.K., Beiras, R., Bervoets, L.  Proceedings 12th Annual Meeting of SETAC-Europe: Challenges in Environmental Risk Assessment and Modelling. 12-16 May 2002, Vienna, Austria., 2002 

Salinity change in the subtropical Atlantic: Secular increase and teleconnections to the North Atlantic Oscillation  Rosenheim, B.E., P. K. Swart, S. R. Thorrold, A. Eisenhauer, and Ph. Willenz  Geophys. Res. Lett; 32 (2), L02603 doi: 10.1029/2004GL021499., 2005 

Scallops skeletons as tools for accurate proxy calibration.   Lorrain A., Paulet, Y.M., Chauvaud, L., Dunbar, R., Mucciarone, D., Pécheyran, C., Amouroux, D., Fontugne, M.  AGU.EGU.EGS. Nice. 6-11 Avril 2003., 2003 

Soaking up the limelight.  Berry, L  Nature, 421 (6925) , 2003 

Sr and Mg Profiles in Aragonitic Bivalves: Do They Record Temperature?  Gillikin, D. P., Ulens, H., Dehairs, F., Baeyens, W., Navez, J., Andre, L., Keppens, E., and the CALMARS group  Ocean Sci. Meet. Portland, OR, Suppl. - Eos Transactions of the American Geophysical Union, 84(52)., 2004 

Stable carbon isotopic composition of Mytilus edulis shells: relation to metabolism, salinity ä13CDIC and phytoplankton.   Gillikin, D. P., A. Lorrain, S. Bouillon, Ph. Willenz and F. Dehairs Organic Geochemistry 37, 2006 

Stable Isotopes and Mg/Ca, Sr/Ca Ratios in a Sclerosponge Archive.   Bashar B., F. De Ridder, E. Keppens, C. Lazareth, Ph. Willenz, F. Dehairs, L. André and the CALMARS group EGU General Assembly 2005, Vienna, Austria. - Geophysical Research Abstracts, Vol. 7, 2005 

Storage Cells and Spermatic Cysts in the Caribbean Coralline Sponge Goreauiella auriculata (Astroscleridae, Agelasida, Demospongiae): a Relationship ?  Willenz, Ph. and Hartman, W.D.  Bollettino dei Musei e degli Istituti Biologici della (R.) Università di Genova, 68, 2004 

Strong biological controls on Sr/Ca ratios in aragonitic marine bivalve shells.  Gillikin, D. P., A. Lorrain, J. Navez, J. W. Taylor, L. André, E. Keppens, W. Baeyens and F. Dehairs  Geochemistry, Geophysics, Geosystems 6, Q05009, doi:10.1029/2004GC000874, 2005b 

Strong kinetic effects on Sr/Ca ratios in the calcitic bivalve Pecten maximus  53) Lorrain A., Gillikin D.P., Paulet Y.-M., Chauvaud L., Navez J., Le Mercier A. and André L. Strong kinetic effects on Sr/Ca ratios in the calcitic bivalve Pecten maximus, 2005 

Strong kinetic effects on Sr/Ca ratios in the calcitic bivalve Pecten maximus.  Lorrain A., D. P. Gillikin, Y.-M. Paulet, L. Chauvaud, J. Navez, A. Le Mercier, L. André .  Geology 33., 2005 

Strong kinetics effects on Sr/Ca ratios in the calcitic bivalve Pecten maximus.   Lorrain A., D.P. Gillikin, Y.-M. Paulet, L. Chauvaud, J. Navez, A. Lemercier, L. André and the CALMARS Group  EGU General Assembly 2005, Vienna, Austria - Geophysical Research Abstracts, Vol. 7., 2005 

Strong kinetics effects on Sr/Ca ratios in the calcitic bivalve Pecten maximus.   Lorrain, A., D. P. Gillikin, Y.-M. Paulet, L. Chauvaud, J. Navez, A. Le Mercier, L. André Proceedings, ASLO 2005 Summer Meeting, June 19 – 24, Santiago de Compostela, Spain. , 2005 

Systema Porifera. A Guide to the Classification of Sponges  Hooper, J.N.A. & Van Soest, R.W.M. (Eds), Willenz, Ph. ( Bibliographic Ed.)  Kluwer Academic / Plenum Publishers, 2002 

Temperature control on Mg and trace metal incorporation into the echinoderm skeleton.   Ranner H, Ladrière O, de Jonghe C, Monin L, Navez J, André L, Dubois Ph.  in prep, 2006 

Temperature control on δ18O and δ13C incorporation into the echinoderm skeleton.   Ranner H, Ladrière O, Gilikin D, Keppens E, Dubois Ph.  in prep, 2006 

The CALMARS website   CALMARS Group http://www.vub.ac.be/calmar/, 2006 

The Oceanic Lead Trends Recorded by Sclerosponges. AGU Fall meeting- December 2002.  Verheyden S., D. Langlet, L. André, Ph. Willenz, J. Navez, P. Swart and The Calmars Group AGU Fall meeting- December 2002., 2002 

The potentials of aragonitic bivalves as paleoclimate proxies: d18O, Sr/Ca and Mg/Ca.   Gillikin, D. P., F. Dehairs, W. Baeyens, J. Navez, L. André, E. Keppens, and the CALMARS Group  International Paleo-environments Symposium (QRA2004), Brussels, Belgium, 15-17 September., 2004 

The potentials of high resolution trace element profiles in bivalve shells as a record of paleoenvironment: exploring Mercenaria mercenaria.  Gillikin D. P., F. Dehairs, W. Baeyens, J. Navez, L. André, and the CALMARS Group Geophysical Research Abstracts, Vol. 5, 2003 

The potentials of Saxidomus giganteus as a paleoclimate proxy. MareLac   Ulens, H.  M.Sc. Thesis.Gent University, Belgium. Promoter: F. Dehairs; Mentor: D.P. Gillikin., 2003 

The shell of the Great Scallop Pecten maximus as a high frequency archive of paleoenvironmental change  Chauvaud L, Lorrain A, Dunbar RB, Paulet Y-M., Thouzeau G, Jean F, Guarini J-M, & Mucciarone D  Geochemistry, Geophysics, Geosystems 6, Q08001, (In press) 

The Use of Hypercalcified Sponges as Proxy Indicators of Climate Change: Biological Investigations  Berry, L., Sivel, V , Zandberen, H., Willenz, Ph. and the CALMARS Group EGU General Assembly 2005, Vienna, Austria. - Geophysical Research Abstracts, Vol. 7, 2005 

The variation in LA-ICP-MS measurements at 6th European Laser ablation  De Ridder F.  Proceedings ICP-MS workshop, 24-25 June, 2002, Utrecht., 2002 

Toward a mechanistic understanding of trace element proxy incorporation in bivalve shells.  Lorrain, A., D. P. Gillikin, Y.M. Paulet, C. Paillard, J. Navez, L. André, F. Dehairs, W. Baeyens and the CALMARS Group Proceedings International Paleo-environments Symposium (QRA2004), Brussels, Belgium, 15-17 September., 2004 

Toward a mechanistic understanding of δ13C in the aragonitic bivalve shells of Mercenaria mercenaria.  Gillikin, D.P., A. Lorrain, Li Meng, F. Dehairs, W. Baeyens, E. Keppens and the CALMARS Group  EGU General Assembly 2005, Vienna, Austria.- Geophysical Research Abstracts, Vol. 7 , 2005 

Trace element profiles in carbonate skeletons - Comparison between two analytical techniques.   Navez, J., A. Lorrain and L. André  Proceedings Colloquium Spectroscopicum International XXXIII (CSI XXXIII), Granada, Spain, 7-12 September 2003. , 2003 

Trace element proxies (Sr/Ca, Ba/Ca and Pb/Ca) in Bivalve shells: environmental signals or not?  Gillikin, D. P. , F. Dehairs, D. Steenmans, L. Meng, T. Haifeng, J. Navez, L. André, W. Baeyens, E. Keppens, and the CALMARS group.  Fall Meet. San Francisco, CA, Suppl.- Eos Transactions of the American Geophysical Union, 85(46)., 2004 

Trace element study in scallop shells by laser ablation ICP-MS: the example of Ba/Ca ratios.   Lorrain A., Pécheyran, C., Paulet, Y.M., Chauvaud, L., Amouroux, D., Krupp, E., Donard, O.F.X.  AGU.EGU.EGS. Nice. 6-11 Avril 2003. , 2003 

Tracing of bauxite residues in the tropical sea urchin Tripneustes ventricosus and sediments from Discovery Bay, Jamaica.   Ranner H, Navez J, André L, Dubois Ph.  In prep, 2006 

Uptake of trace elements in sponges with a hypercalcified skeleton.  Berry, L., Sivel, V , Zandberen, H., Willenz, Ph. and the CALMARS Group 13th European Microscopy Congress. Antwerp, Belgium, August 22-27, 2004., 2004 

Validation of alternative marine calcareous skeletons as recorders of global climate change (CALMARS)   Philippe WILLENZ,& Lorraine BERRY,Frank DEHAIRS, Willy BAEYENS, Eddy KEPPENS, Fjo DE RIDDER,David P. GILLIKIN,Luc ANDRE, Sophie VERHEYDEN, Anne LORRAIN, Philippe DUBOIS, Herwig RANNER, Ronny BLUST, Valentine MUBIANA KAYAWE  SPSD II - Final Report, 2006 

Validation of LA-ICP-MS results with SN-HR-ICP-MS.   Gillikin D. P., J. Navez, F. Dehairs, W. Baeyens and L. André  Proceedings Fourth International Conference on High Resolution Sector Field ICPMS, 15th-17th October 2003, Venice, Italy., 2003 

Validation of Laser Ablation-ICP-MS results with Solution Nebulization-HR-ICP-MS.   Gillikin, D. P., J. Navez, F. Dehairs, W. Baeyens and L. André European Science Foundation workshop: Isotopic microsampling in Earth, Environmental and Archaeological Sciences, September 9-11, 2004, Durham, UK. , 2004 

Variation in Coralline Sponge Aragonitic Skeleton Pb Profiles: Physiological and/or Environmental Influences ?  Berry L., Verheyden S., André L., Willenz Ph, and the CALMARS group  Bollettino dei Musei e degli Istituti Biologici della (R.) Università di Genova, 66-67., 2002 

Vessel frequency reveals growth zones in the mangrove Rhizophora mucronata Lamk.   Verheyden, A., H. Beeckman, F. De Ridder and N. Koedam  6th International Conference on dendrochronology, August 22-27, Québec City, Canada. , 2002 

Wetland bivalves as environmental archives  Gillikin, D. P., Ulens, H., Dehairs, F., Baeyens, W., Navez, J., André, L., Keppens, E., and the CALMARS Group  Eighth Symposium on Biogeochemistry of Wetlands, Gent, Belgium, September 14-17, 2003., 2003 

δ13C variations in scallop shells: Increasing metabolic carbon contribution with body size?  Lorrain, A., Y.-M. Paulet, L. Chauvaud, R. Dunbar, D. Mucciarone and M. Fontugne  Geochimica et Cosmochimica Acta, 68 (17)., 2004 

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