Dr. Mahasweta Saha | Marine Chemical Ecology

Research Division, FB3: Marine Ecology

Experimental Ecology, Benthosökologie

GEOMAR

24105 Kiel GERMANY

Honorary Lecturer and Visiting Fellow

School of Biological Science

University of Essex

Wivenhoe Park
CO 43 SQ Colchester UNITED KINGDOM

Office:
Room: 004
Phone: +49 431 600-4523
Fax: +49 431 600-1671
Email: msaha(at)geomar.de

sahamahasweta(at)gmail.com (permanent contact ID)

Twitter @sahamahasweta

Work Address:
Hohenbergstrasse 2

24105 Kiel GERMANY

Associate Editor: J of Ecology, Frontiers in Ecology and Evolution

Science Communicator: https://www.tedxkieluniversity.com/mahasweta-saha

 

 

 

 

Google Scholar Citations

 

 

Research Interests

  1. Epibiosis and Antifouling defence.
  2. Defence fluctuations in response to biotic and abiotic factors.
  3. Impacts of environmental stressors on chemical defence of macrophytes and epi microbiome .
  4. Chemical ecology of Invasive seaweeds.
  5. Marine volatiles: atmosheric chemistry and chemical ecology .
  6. Seaweed-pathogen interactions.

Research Grants/Fellowships

Till date, 6 project grants/fellowships (DAAD, DFG Excellence Cluster etc.) were awarded as Principal Investigator

Travel Awards

 

 TillI date, 16 travel awards received. 

Publications

Click here for PDFs OR just send an email.

OceanRep

Saha M, E. Berdalet, Y. Carotenuto, P. Fink, T. Harder, U. John, F. Not, G. Pohnert, P. Potin, E. Selander, W. Vyverman, T. Wichard, V. Zupo, and M. Steinke*. 2018. Babylonian towers in a blue world – using chemical language to shape future marine health. Concepts and questions paper. Frontiers in Ecology and Environment (accepted).

Steinke M*, Randall L, Dumbrell A, Saha M. 2018. Volatile biomarkers for aquatic ecological research. Advances in Ecological Research (accepted).

Pansch C*, Scotti M, Barboza F, Al-Janabi B, Brakel J, Briski E, Bucholz B, Franz M, Ito M, Paiva F, Saha M, Sawall Y, Weinberger F, Wahl M. 2018. Heat waves and their significance for Baltic Sea benthic communities – a large scale experimental approach. Global Change Biology: 1-18.

Wiese J*, Saha M, Storjohann AW, Weinberger F, Schmaljohann R, Imhoff JF. 2017. Vicingus serpentipes gen. nov., sp. nov., a new member of the Flavobacteriales from the North Sea. International Journal of Systematic and Evolutionary Microbiology 68: 333-340.

Saha M*, Goecke F, Bhadury P. 2017. Algal natural compounds and extracts as antifoulants. Journal of Applied Phycology 1-16.

Guan C, Parrot D, Wiese J, Sönnichsen F, Saha M, Tasdemir D, Weinberger F*. 2017.The role of rosmarinic acid and sulfated flavonoids in the chemical defense of Zostera marina against microfouling. Biofouling 33(10):867-880.

Brodie J, Ball S, Bouget FY, Chan CX, De Clerck O, Cock M, Gachon C, Grossman A, Mock T, Raven J, Saha M, Smith A, Vardi A, Yoon HS, Bhattacharya D*. 2017. Biotic interactions as drivers of algal origin and evolution. Tansley Review, New Phytologist 216(3): 670-681.

Saha M*, Wiese J, Weinberger F, Wahl M. 2016. Rapid adaptation to controlling new microbial epibionts in the invaded range promotes invasiveness of an exotic seaweed in the invaded range. Journal of Ecology 104: 969-978.

Saha M*, Rempt M, Stratil SB, Wahl M, Pohnert G, Weinberger F. 2014. Effects of light and temperature stress on the defensive chemistry of the brown alga Fucus vesiculosus. PloS One 9 (10): DOI:10.1371/journal.pone.0105333 GEOMAR news release    FutureOcean highlights

Wahl M, Sofyani A, Saha M, Kruse I, Lenz M, Sawall Y. 2014. Large scale patterns of antimicrofouling defenses in the hard coral Pocillopora verrucosa in an environmental gradient along the Saudi Arabian coast of the Red Sea. PloS One 9(12): DOI:10.1371/journal.pone.0106573

Saha M* and Wahl M. 2013. Seasonal variation in antifouling defence of the temperate brown alga Fucus vesiculosus. Biofouling 29(6): DOI: 661-668.10.1080/08927014.2013.795953

Saha M*, Rempt M, Gebser B, Grüneberg J, Pohnert G, Weinberger F. 2012. Dimethylsuphopropionate (DMSP) and proline from the surface of the brown alga Fucus vesiculosus inhibit bacterial attachment. Biofouling 28 (6): 593- 604. DOI: 10.1080/08927014.2012.69861

Saha M*, Rempt M, Grosser K, Pohnert G, Weinberger F. 2011. Surface-associated fucoxanthin mediates settlement of bacterial epiphytes on the rockweed Fucus vesiculosus. Biofouling 27 (4): 423-33.DOI: 10.1080/08927014.2011.580841

Wahl M, Shahnaz L, Dobretsov S, Saha M, Symanowski F, David K, Lachnit T, Vasel M, Weinberger F. 2010. Ecology of antifouling resistance in the bladder wrack Fucus vesiculosus: patterns of microfouling and antimicrobial protection. Marine Ecology Progress Series 411: 33-48.DOI: 10.3354/meps08644 *Corresponding author

PhD Thesis

Saha M. 2011. Anti-settlement defence of Fucus vesiculosus: Chemistry and Ecology (Doctoral thesis/PhD), Christian-Albrechts-Universität, Kiel, Germany, 140 pp.

Presentations

Oral presentations

2018:

·     Saha et al. Macrophytes in “hot” water: response of marine foundation macrophyte species to simulated heatwaves. British Ecological Society Meeting, Dec 16 - 19, Birmingham, England.

Saha et al. Warmer doesn't mean weaker: impact of simulated heatwaves on marine foundation macrophyte species. Presentation at 4th International conference on effects of climate change on the world’s oceans, June 4 – 8, Washington DC, US.


Saha et al. Warmer doesn't mean weaker: impact of heatwaves on marine foundation macrophyte species. Presentation at British Phycological Society Meeting, Jan 9 - 11, Southend, Essex, UK.

2017:

Saha & Weinberger.  When friends are of no help: breakdown of bacterial “armour” can limit the invasion success of a seaweed host? Presentation at International Phycological Meeting, August 13 - 19, Szczecin, Poland.

Saha et al.  Effect of marine heatwaves on antibacterial defence of two habitat forming macrophytes. Presentation at 7th UK Algae Conference, July 6 - 7, Swansea, Wales.    

Randell, Saha et al.  Effect of temperature on VOCs production in coccolithophore species Emiliania huxleyi. Presentation at British Phycological Society Meeting, Jan 11 - 13, Bangor, Wales.

Saha & Weinberger.  The breakdown of bacterial “armour”: feebleness of an invasive seaweed holobiont? Presentation at British Phycological Society Meeting, Jan 11 - 13, Bangor, Wales.

Saha et al.  Taxon-specific volatile metabolomic signatures in three species of seaweed. Presentation at British Phycological Society Meeting, Jan 11 - 13, Bangor, Wales.

2016:

Saha et al.  Warmer does not mean weaker: Impact of heatwaves on antibacterial defense of the temperate brown seaweed Fucus vesiculosus and the seagrass Zostera marina. Presentation at British Ecological Society Meeting, Dec 11 - 14, Liverpool, England.                

 

Saha et alRapid defence adaptation to microbial foes promotes invasiveness of an exotic seaweed in the invaded range. Presentation at 11th   International Temperate Reef Symposium, June 26 - 30, Pisa, Italy.

Saha & Wahl.  Fluctuating defense with fluctuating time: Temporal variation in the antifouling defence of the brown alga Fucus vesiculosus. Presentation at 18th International Congress on Marine corrosion and Fouling, June 19 – 24, Toulon, France.

Saha et al.  New life, new challenge: antifouling defence patterns of native and non-native populations of an invasive seaweed suggest a potential for rapid defence adaptation to new microbial foulers. Presentation at 18th International Congress on Marine corrosion and Fouling, June 19 – 24, Toulon, France.

2015:                

Saha et alUnlocking algal invasion mechanisms: adaptation of exotics to new abiotic and biotic stressors? Presentation at Aquatic Biodiversity and Ecosystems Conference, August 30 – September 4, Liverpool, England.

2014:                

Saha. Anti- and profouling effects: Chemical maintenance of the holobiont  Fucus vesiculosus? Presentation at 16th International Congress on Marine corrosion and Fouling, July 6-10, Singapore.

Poster presentations

2015:                

Saha et alThe drivers of algal invasion success: Adaptation of resistance towards microfoulers promotes algal invasivess? Presentation at British Ecological Society Annual Meeting, Dec 13-16, Edinburgh, Scotland.

2015:                

Saha et alUnlocking algal invasion mechanisms: adaptation of exotics to new abiotic and biotic stressors? Presentation at the 6th European Phycological Congress, August 23-28, London, England.

2013:                

Saha. Anti- and profouling effects: Chemical maintenance of the
holobiont Fucus vesiculosus? Presentation at FB3 Evaluation meeting, June 19-20, GEOMAR, Kiel, Germany.

2011:                

Grosser, Saha et al. Investigation of the chemical sphere around macroalgal surfaces. Presentation at 2nd International Student Conference on Microbial Communication, September 13-16, Jena, Germany.

2010:                

Saha et al. Interaction of stress factors and the chemical antifouling defence system of F. vesiculosus. Presentation at the European Marine Biology Symposium, August 23-27, Edinburgh, Scotland.

 

Invited talks

2019:

University of Hull, Hull, England.

2018:

Trace Gas Workshop, University of Essex, England.

Natural History Museum, Paris, France.

University of Cambridge, England

Plymouth Marine Lab, England.               

2017:               

Phycomorph Meeting, Brussels, Belgium.

EU COST Action Workshop, Jena, Germany.

RD3 Seminar, GEOMAR, Kiel, Germany.

 

2016:               

University of East Anglia, Norwich, England.               

Theo Murphy international scientific meeting, Buckinghamshire, England.

Institut für Anorganische und Analytische Chemie, Friedrich-Schiller-Universität Jena, Jena, Germany.

2015:                

International Euro Marine Chemical Ecology Workshop, University of Essex, England.

2013:                  

Department of Biology, Indian Institute of Science Education and Research, Kolkata, India.

Services


  • Convenor and Organizer of the session Language of life under climate change. ISCE 35th Annual Meeting, January 2-7, 2019, Atlanta, Georgia, USA.
  • Session chair, Language of life under climate change. ISCE 35th Annual Meeting, January 2-7, 2019, Atlanta, Georgia, USA.
  • Convenor and Organizer of the session Interactions of algae with microbes and grazers in present and future oceans. BPS 67th Annual Meeting, January 7-10, 2019, Oban, Scotland.
  • Session chair, Interactions of algae with microbes and grazers in present and future oceans. BPS 67th Annual Meeting, January 7-10, 2019, Oban, Scotland.
  • Lead Convenor and Organizer of the session Benthic and pelagic system responses in a changing ocean: From genes to ecosystem level functioning, at the 4th International Symposium on Effects of Climate Change on World Oceans, June 4-8, 2018 in Washington D.C., U.S.A.
  • Session chair, Benthic and pelagic system responses in a changing ocean: From genes to ecosystem level functioning, 4th International Symposium on Effects of Climate Change on World Oceans, June 4-8, 2018 in Washington D.C., U.S.A.
  • Review College Board Member of British Ecological Society since 2017.
  • Reviewer for 9 peer reviewed international journals: Biofoluing, Molecules, Ecological Applications, Estuaries and Coasts, Marine Biology, Science of the Total Environment, Botanica Marina, Scientia Marina.
  • Session chair, Evolutionary Ecology (Environment and Stress), British Ecological Society Annual Meeting 2016.
  • Research multiplier role as an IMAP-Humboldt Alumni since 2013.

Major Collaborations

2017 - till date:     Dr. J. Todd, University of East Anglia, UK. Microbial and Molecular Ecology.
2016 - till date:     Dr. T. Wichard, University of Jena, Germany. Chemical Ecology, Microbial Ecology.
2016 - till date:     Dr. M. Steinke, Dr. A. Dumbrell, University of Essex, UK. Volatile Info Chemistry, Bioinformatics.
2013 - till date:     Dr. J. Wiese, GEOMAR, Germany. Microbial Ecology.
2008 - till date:     Prof. Dr. M. Wahl, Dr. F. Weinberger, GEOMAR, Germany. Chemical Ecology, Invasion Ecology.
2010 - till date:     Prof. Dr. G. Pohnert, University of Jena/ Max Plank Institute, Germany. Chemical Ecology, Metabolomics.