Astrid Gärdes

Dr. Astrid Gärdes

Nachwuchsgruppenleiterin

Abteilung: Biogeochemie und Geologie
Arbeitsgruppen: AG Tropische Marine Mikrobiologie

Tel.: +49 421 23800 - 64

Fax: +49 421 23800 - 30

E-Mail: Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein!

Büro: Fahrenheitstr. 6, Anbau
28359 Bremen
Raum: 2120 (1. Etage)

Forschungsinteressen

- Reaktion von Mikroorganismen auf anthropogene Veränderungen
- Interaktionen zwischen Bakterien und Algen in sich wandelnden Umweltbedingungen
- Dynamik mariner Aggregate in eutrophen Küstensystemen
- microbielle Aktivität und Transformation von DOC zu POC
- Effekte der Abwässer von Fischfarmen auf Sedimentationsraten von Partikeln


Lebenslauf Dr. Astrid Gärdes


Publikationen

Referierte Fachzeitschriften

1. Kegler H. F., Kegler P., Luckmann A. Gärdes A. Small scale shifts in microbial communities due to local island populations in the Spermonde Archipelago, Indonesia. Under review PeerJ

2. Cárdenas, A. Ramette, A., Gärdes, A. 2017. Microbiomes of algae-dominated coral reefs are more susceptible to combined than individual effects of ocean acidification and dissolved organic carbon. Under review Environmental Microbiology

3. Pogoreutz C, Rädecker N, Cárdenas A, Gärdes A, Wild C, Voolstra CR. 2017. Dominance of Endozoicomonas bacteria throughout coral bleaching and mortality suggests structural inflexibility of the Pocillopora verrucosa microbiome. Accepted Ecology and Evolution

4. Pogoreutz C, Rädecker N, Cárdenas A, Gärdes A, Wild C, Voolstra CR. 2017 Nitrogen Fixation Aligns with nifH Abundance and Expression in Two Coral Trophic Functional Groups. Frontiers in Microbiology. 2017;8:1187. doi:10.3389/fmicb.2017.01187.

5. Cárdenas A., Neave M., Haroon M.F., Pogoreutz C., Rädecker N., Wild C., Gärdes A., Voolstra C.R. Excess of labile carbon promotes virulence gene expression in coral reef bacterioplankton populations: implication for reef ecosystem health. ISME J. 2017 Sep 12. doi: 10.1038/ismej.2017.142.

6. Pogoreutz C, Rädecker N, Cárdenas A, Gärdes A, Voolstra CR, Wild C. 2017. Sugar enrichment provides evidence for a role of nitrogen fixation in coral bleaching.
Glob Chang Biol. 2017 Sep;23(9):3838-3848. doi: 10.1111/gcb.13695.

7. Teichberg M., Wild C., Bednarz V.N., Kegler H.F., Lukman M., Gärdes A., Heiden J., Weiand L., Abu N., Nasir A., Miñarro S., Ferse S.C.A., Reuter H., Plass-Johnson J.G. 2017. Spatio-temporal patterns in coral reef communities of the Spermonde Archipelago, 2012-2014, I: Comprehensive reef monitoring reveals two indices that reflect changes in reef health. Accepted in Frontiers in Marine Science special issue

8. Plass-Johnson, J.G., Bednarz V.N., Kegler H., Heiden J., Weiand L., Wild C., Gärdes A., Lukman M., Reuter H., Sebastian C. A. Ferse S. C. A., Teichberg M. 2017. Spatio-temporal patterns in the coral reef communities of the Spermonde Archipelago, 2012-2014, II: Fish assemblages display structured variation related to benthic. Accepted Frontiers in Marine Science special issue

9. Kegler P, Kegler H.F, Gärdes A., Ferse S.C.A, Lukman M., Alfiansah Y.R., Hassenrück C., Kunzmann A. 2017 .Bacterial biofilm communities and coral larvae settlement at different levels of anthropogenic impact in the Spermonde Archipelago, Indonesia. Frontiers in Marine Science 4 (2017): 270.

10. Kegler H., Luckman A., Teichberg M., Plas-Johnsen J., Hassenrück C., Wild C., Gärdes A. 2017. Bacterial community composition and potential driving factors in different reef habitats of the Spermonde Archipelago, Indonesia. Front. Microbiol., 20 April 2017 | https://doi.org/10.3389/fmicb.2017.00662

11. Cárdenas A, Meyer F,W., Schwieder H., Wild C., Gärdes A., 2015. The formation of aggregates in coral reefs under high dissolved inorganic and organic carbon (DIC and DOC) concentrations: A mesocosm approach. Marine Chemistry 175 MARCHE-03235.
12. Barker R.A, Tisnado J., Gillian C., Lambert L.A., Gärdes A., Carrano P.A., Carrano C.J. 2015. Molecular Characterization of a Homolog of the Ferric-uptake regulator, Fur, from the Marine Bacterium Marinobacter algicola DG893. Biometals 28(1):197-206.

13. Yarimizu K., Polido G., Gärdes A., Carter M., Hilbern M., Carrano CJ. 2014. Evaluation of Photo-reactive Siderophore Producing Bacteria Before, During and After a Bloom of the Dinoflagellate Lingulodinium polyedrum. Metallomics 6(6):1156-63.

14. Gärdes A., Triana C., Amin SA., Green DH., Romano A., Trimble L., Carrano CJ. 2013. Detection of photoactive siderophore biosynthetic genes in the marine environment. Biometals 26(3): 507-516.

15. Amin SA, Green DH, Waheeb DA, Gärdes A, and Carrano CJ. “Iron Transport in the genus Marinobacter.” BioMetals, 25,135-147 (2012).

16. Amin SA., Green DH., Gärdes A., Romano A., Trimble L., Carrano CJ. 2012.
Siderophore-mediated iron uptake in two clades of Marinobacter spp. Associated
with phytoplankton: the role of light. Biometals 25:181-192.

17. Gärdes A., Ramaye Y., Grossart H-P., Passow U., Ullrich MS. 2012. Effects of Marinobacter adhaerens HP15 on polymer production by Thalssiosira weissflogii under nutrient limitation. Marine Ecology Progress Series 461: 1–14. *Featured Article

18. Sonnenschein E†., Gärdes A†., Seebah S., Torres-Monroy I., Grossart H-P., Ullrich MS. 2011. Development of a genetic system for Marinobacter adhaerens sp. HP15 involved in aggregate formation by interacting with diatom cells. Journal of Microbiological Methods 87:176–18. †authors contributed equally

19. Käppel E., Gärdes A., Seebah S., Grossart H-P., Ullrich MS. 2011. Marinobacter adhaerens HP15 sp. nov., prominent in aggregate formation with the diatom Thalassiosira weissflogii. International Journal of Systematic and Evolutionary Microbiology 62:124-128.

20. Gärdes A., Iversen M., Grossart H-P., Passow U., Ullrich MS. 2011. Diatom-associated bacteria are required for aggregation of Thalassiosira weissflogii. The ISME Journal 5:436-445.

21. Gärdes A., Theeling H., Käppel E., Seebah S., Grossart H-P., Ullrich MS., Glöckner FO. 2010. Complete genome sequence of Marinobacter adhaerens (HP15w). Standards in Genomic Sciences 3:97-107.

22. Scheffel A., Gärdes A., Grünberg K., Wanner G., Schüler D. 2008. The major magnetosome proteins MamGFDC are not essential for magnetite biomineralization in Magnetospirillum gryphiswaldense but regulate the size of magnetosome crystals. Journal of Bacteriology 190: 377-386.

Tagungsbände

Klüger nutzen - besser schützen. Bremer Forschung an tropischen Küsten". Falkenberg Verlag 2017, Gärdes A.; Hrsg Hempel und Hornidge

Gärdes A., Schwieder HF., Einsporn MH., Aquatic microorganisms: between producers, consumers and pathogens. In: Einsporn MH, Wiedling J, Beilfuss S, editors. From coast to deep sea: multiscale approaches to marine sciences: Glimpse Reviews. Eigenverlag - Deutsche Gesellschaft
für Meeresforschung (DGM) e.V. 2013. p. 29-46.

Kegler P, Kegler HF, Kunzmann A, Gärdes A, Alfiansah YR, Lukman M, Hassenrück C, Ferse CA (2016) Different levels of anthropogenic impact influence coral larvae settlement and bacterial biofilm communities in the Spermonde Archipelago, Indonesia. Proceedings of the 13th International Coral Reef Symposium, Honolulu: 145-157

Wissenschaftliche Abschlußarbeit

Astrid Gärdes (2010) “A bilateral model system for the molecular investigation of diatom-bacteria interactions” PhD Thesis, Molecular Microbiology Group at Jacobs University Bremen and the Max Planck Institute for Marine Microbiology Bremen.

Astrid Gärdes (2007) “Molecular Investigation of Diatom-Bacteria Interaction” Master Thesis, at Jacobs University Bremen and the Max Planck Institute for Marine Microbiology Bremen.

Astrid Gärdes (2005) “Establishment of the Cre/loxP recombinase-mediated generation of unmarked gene deletion in Magnetospirillum gryphiswaldense” Diploma at Max Planck Institute for Marine Micobology Bremen and the University of Applied Science Emden, Germany.