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Climate Change and Antarctic Microbial Biodiversity (CCAMBIO)

Research project SD/BA/03A (Research action SD)


Persons :


Description :

Context

The Belgian CCAMBIO project, financed by BELSPO, aims to study the diversity, biogeographic zoning, evolutionary history, and genomic make-up of lacustrine microbial mat communities in the Antarctic Realm (AR) in order to assess their resilience and local and regional responses to global change. It participates to the international initiatives coordinated by the SCAR programmes ‘Antarctic Ecosystems: Adaptations, Thresholds and Resilience (AntERA)’ and ‘State of the Antarctic Ecosystem (AntEco)’. Thanks to the better knowledge of the microbial diversity, the factors governing its distribution and the impacts of climate change, CCAMBIO will contribute to the establishment of new protected areas and an improved integrated management of Antarctic biotopes.

Project description

 Objectives

The specific objectives are:

1. To extend existing sample collections by field campaigns to the understudied sub-Antarctic and Maritime Antarctic islands
2. To quantify the degree and nature of microbial bio-regionalisation in the AR using in-depth inventories of microbial biodiversity (cyanobacteria, selected groups of bacteria, and protists).
3. To test evolutionary hypotheses on the origin, diversification rate and range dynamics of selected taxa.
4. To study the overall genomic make-up and biochemical properties of a microbial mat community along a depth gradient to assess the contribution of the different taxonomic/functional groups to the functioning of the consortium in response to changes in the light climate.
5. To explore the potential of microorganisms and functional genes/groups as early warning indicators for global change through modelling the distribution of focal taxa and functional groups in response to climate and environmental change.

 Methodology

CCAMBIO will use a combination of techniques:

1) Biomass partitioning among the groups of photosynthetic microorganisms will be done by high performance liquid chromatography of photosynthetic pigments (PAE). In depth analyses of microbial community composition using 454 next generation tagged-sequencing analysis of the 16S or 18S ribosomal RNA genes for cyanobacteria, bacteria and micro-eukaryotes as well as ITS regions for cyanobacteria (CIP, PAE, LMG, RBINS) will be carried out.
2) For a selection of taxa, we will develop multi-gene molecular phylogenies to study their evolutionary history within the Antarctic Realm (AR). The importance of adaptive radiations and local population differentiation will be assessed (CIP, PAE, MIC).
3) Functional data will be obtained by a metagenomic inventory and metatranscriptome analysis along a depth gradient, in parallel with a measure of the photosynthetic activity by PAM (Pulse-Amplitude Modulated) fluorometry. This will inform us about the contribution of the different taxonomic/functional groups to the functioning of the consortium in function of changes in depth and light intensity (CIP, PAE, LMG).
4) The biodiversity and functional genomic data will be used to develop climate and environmental envelopes for key taxa and functional groups and to define bioregions and identify areas with an unusual diversity or harbouring a relict flora. Spatial models to predict the distribution of taxa and functional groups under different scenarios of climate change will be developed (CIP, PAE, LMG, BOT, RBINS, BAS).

 Interaction between the different partners

Each partner has a specific experience with the diversity and evolution of particular microbial groups. Additional samplings will mainly be carried out by partner BOT. The experiments will be carried out by the 3 first partners and RBINS will participate for the bioinformatic analysis (MARS module of the portal ‘Biodiversity.aq’). The statistical analysis and spatial models will be done by all and be centralized by PAE.

 Link International Programmes

CCAMBIO participates to the international initiatives coordinated by the SCAR programmes ‘Antarctic Ecosystems: Adaptations, Thresholds and Resilience (AntERA)’ and ‘State of the Antarctic Ecosystem (AntEco)’. With the members of the follow-up committee, it aims to build a consortium to study the metagenomics and metatranscriptomics of microbial communities in Polar regions.

 Expected results and/or Products

- A website (www.ccambio.ulg.ac.be).
- Publications in high quality scientific journals with referees.
- A workshop on the use of NGS methods in microbial ecology (http://www.cip.ulg.ac.be/workshopCCAMBIO/).
- A sample and DNA database
- New characterized strains in the BCCM public collections
- Publication of biodiversity data in an open access data system, valorised, and presented at various meeting and workshops attended by specialists in the field and the general public. This will involve the organisation of (technical) workshops, the training of junior scientists and students and dissemination through the media.
- A spatial model to predict the distribution of microbial taxa in different climate change scenarios. The datasets and models will be useful as support to environmental policies in Antarctica.
- A conclusion workshop.

Partners

 Activities

Dr. Annick Wilmotte, (CIP), University of Liège: Coordinator and specialist of the cyanobacterial diversity
Prof. Wim Vyverman, (PAE), University of Gent: Specialist of the protist diversity and ecological modeling analyses
Prof. Anne Willems, (LMG), University of Gent: Specialist of the bacterial diversity
Dr Bart Van De Vijver (BOT), National Botanic Garden of Belgium: Specialist of diatom diversity
Dr. Anton Van de Putte (RBINS), Royal Belgian Institute of Natural Sciences: Project manager of the portal ‘Biodiversity.aq’ for the deposit and analyses of Antarctic biodiversity datasets
Dr Pete Convey (BAS), British Antarctic Survey: Specialist of the polar biodiversity and ecology

 Contact Information

Dr. Annick Wilmotte, Centre for Protein Engineering (CIP), Institute of Chemistry, Sart Tilman B6, University of Liège, 4000 Liège, Belgium.
Tél : + 32 4 366 38 56 / 33 87
Fax : + 32 4 366 33 64
E-mail : awilmotte@ulg.ac.be

Prof. Wim Vyverman, Protistology and Aquatic Ecology (PAE), University of Ghent, Krijgslaan 281 S8, 9000 Ghent. Belgium
Tél : +32 9 264 85 01
Fax : +32 9 264 85 99
E-mail : Wim.Vyverman@Ugent.be

Prof. Anne Willems, Laboratory for Microbiology (LMG), University of Ghent, K.L. Ledeganckstraat 35, 9000 Ghent, Belgium
Tél : +32 9 2645103
Fax : +32 9 2645092
E-mail : Anne.Willems@Ugent.be

Dr Bart Van De Vijver (BOT), National Botanic Garden of Belgium, Department of Bryophyta & Thallophyta, Domein Van Bouchout, 1860 Meise, Belgium
Tel: +32 2 260 09 41
Fax: +32 2 260 09 45
Email: vandevijver@br.fgov.be

Dr. Anton Van De Putte (RBINS), Royal Belgian Institute of Natural Sciences, 29, rue Vautier, 1000 Brussels, Belgium
Tel: +32(0)2 627 43 18
Fax: +32(0)2 627 41 13
E-mail : avandeputte@naturalsciences.be

Dr Pete Convey (BAS), British Antarctic Survey, Ecosystems, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
Tel: +44 (0)1223 221400
Email: pcon@bas.ac.uk

Follow-up Committee

Name: Prof. Antonio Quesada
Institution: Universidad Autonoma de Madrid, Biology Department (Spain)

Name: Prof. Dr. Takeshi Naganuma
Institution: University of Hiroshima, Graduate School of Biosphere Sciences (Japan)

Name: Dr. Dominic A. Hodgson
Institution: British Antarctic Survey (UK)

Name: Prof. Dr. Warwick Vincent
Institution: Université Laval, Département de Biologie (Canada)

Name: Dr. Marc Lebouvier
Institution: UMR 6553 Ecobio, CNRS - Université de Rennes 1, Station Biologique, Paimpont (France)

Name: Prof. Dr. Josef Elster
Institution: Centre for Polar Ecology, Faculty of Sciences, University of South Bohemia, Ceske Budejovice & Institute of Botany, Academy of Sciences of the Czech Republic, Trebon (Czech Republic)

Name: Dr. Marleen Bosschaerts
Institution: BCCM, Belgian Federal Science Policy, Louise Avenue 231, Brussels, (Belgium)

Name: Prof. Ricardo Cavicchioli
Institution: University of New South Wales, Faculty of Sciences (Australia)

Nom: Prof. Ian Hawes
Institution : Gateway Antarctica, Waterways Centre for Freshwater Management, University of Canterbury, Christchurch (New Zealand)


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