Friederike Urbassek Hoffmann
seniorkonsulent
Geofysisk institutt
Biogeokjemi
Stilling: seniorkonsulent
Telefon: 55 58 20 88
E-post: Friederike.Hoffmann@gfi.uib.no
Besøksadresse: Allégaten 70
Romnummer: 129A
Marine Biogeochemistry
Microbial Ecology
Microbial processes in symbiotic systems
Functional Microbiology
In situ quantification of microbial processes
N- and S-cycle
Environmental impact of sub seafloor CO2 storage
Adminitrative:
Expert evaluator for EU project proposals
Management of national and international projects
Teaching courses in project management
Scientific:
Microbial process quantification with isotope probing
Fluorescence in situ hybridisation (FISH)
Geo-histological techniques
Fluorescence microscopy
link to results in CRISTIN
link to results in CRISTIN
Hoffmann F, Schlappy ML (2011) Sponges (Porifera) and sponge microbes. Encyclopedia of Geobiology,(Reitner J, Thiel V, ed.^eds.), p.^pp. 840-847. Springer.
Schläppy M-L, Schöttner S, Lavik G, Kuypers MMM, de Beer D, Hoffmann F (2010) Evidence for nitrification and denitrification in high and low microbial abundance sponges. Marine Biology 157: 593-602
Hoffmann F, Radax R, Woebken D, Holtappels M, Lavik G, Rapp HT, Schläppy M-L, Schleper C, Kuypers MMM (2009) Complex nitrogen cycling in the sponge Geodia barretti. Environmental Microbiology 11 (9): 2228-2243.
Schöttner S, Hoffmann F, Wild C, Rapp HT, Boetius A, Ramette A (2009) Cold-water coral-mediated effects on the structure of associated bacterial communities. ISME Journal 3: 756-759
Bayer K, Siegl A, Schmitt S, Hoffmann F, Hentschel U (2008) Unravelling microbial diversity and metabolism in marine sponges. Nova Acta Leopoldina NF 96 Nr. 356: 71-78
Hoffmann F, Røy H, Bayer K, Hentschel U, Pfannkuchen M, Brümmer F, Beer Dd (2008) Oxygen dynamics and transport in the Mediterranean sponge Aplysina aerophoba. Marine Biology 153: 1257-1264
Wild C, Mayr C, Wehrmann L, Schöttner S, Naumann M, Hoffmann F, Rapp HT (2008) Organic matter release by cold-water corals and its implication for fauna-microbe interaction. Marine Ecology Progress Series 372: 67-75
Hoffmann F, Sauter E, Sachs O, Røy H, Klages M (2007) Oxygen distribution in Tentorium semisuberites and in its habitat in the Arctic deep sea. In: Custódio M, Lôbo-Hajdu G, Hajdu E, Muricy G (eds) Porifera Research: Biodiversity, Innovation, Sustainability. Série Livros. Museu Nacional, Rio de Janeiro: 379-382
Spetland F, Rapp HT, Hoffmann F, Tendal OS (2007) The reproductive cycle of Geodia barretti (Bowerbank, 1888)(Porifera, Astrophorida) in two Scandinavian fjords. In: Custódio M, Lôbo-Hajdu G, Hajdu E, Muricy G (eds) Porifera Research: Biodiversity, Innovation, Sustainability. Série Livros. Museu Nacional, Rio de Janeiro:613-620
Schläppy M-L, Hoffmann F, Røy H, Wijffels RH, Mendola D, Sidri M, Beer Dd (2007) Oxygen dynamics and flow patterns of Dysidea avara (Porifera, Demospongiae). Journal of the Marine Biological Association of the United Kingdom. 86: 1677-1682
Hoffmann F, Rapp HT, Reitner J (2006) Monitoring microbial community composition by fluorescence in situ hybridisation during cultivation of the marine cold-water sponge Geodia barretti. Marine Biotechnology 8: 373-379
Ianora A, Boersma M, Casotti R, Fontana A, Harder J, Hoffmann F, Pavia H, Poulet SA, Toth G (2006) New trends in marine chemical ecology. Estuaries and Coasts 29: 531-551
Pape T, Hoffmann F, Queric N-V, Juterzenka Kv, Reitner J, Michaelis W (2006) Dense populations of Archaea associated with the hadromerid demosponge Tentorium semisuberites from Arctic deep waters. Polar Biology 29: 662-667
Hoffmann F, Larsen O, Rapp HT, Osinga R (2005) Oxygen dynamics in choanosomal sponge explants. Marine Biology Research 1: 160-163
Hoffmann F, Larsen O, Thiel V, Rapp HT, Pape T, Michaelis W, Reitner J (2005) An anaerobic world in sponges. Geomicrobiology Journal 22: 1-10
Hoffmann F, Rapp HT, Peters H, Pape T, Reitner J (2004) Sedimentary inclusions in the deep-water sponge Geodia barretti (Geodiidae, Demospongiae) from the Korsfjord, Western Norway. Sarsia 89: 1-8
Schönberg CHL, Hoffmann F, Gatti S (2004) Using microsensors to measure sponge physiology. Bollettino dei Musei e degli Istituti Biologici dell' Universitá die Genova 68: 593-604
Hoffmann F, Rapp HT, Zöller T, Reitner J (2003) Growth and regeneration in cultivated fragments of the boreal deep water sponge Geodia barretti Bowerbank, 1858 (Geodiidae, Tetractinellida, Demospongiae). Journal of Biotechnology 100: 109-118
Hoffmann F, Janussen D, Dröse W, Arp G, Reitner J (2003) Histological investigation of organisms with hard skeletons: a case study of siliceous sponges. Biotechnic and Histochemistry 78: 191-199
Reitner J, Hoffmann F (2003) Porifera-Zonierungen in Kaltwasser-Korallenriffen (Sula Rücken, Norwegen. In: Gradstein SR, Willmann R, Zizka G (eds) Biodiversitätsforschung: Die Entschlüsselung der Artenvielfalt in Raum und Zeit, Kleine Senckenberg-Reihe 45. E. Schweizerbart'sche Verlagsbuchhandlung, Stuttgart, pp 75-87
Osinga R, Armstrong E, Burgess JG, Hoffmann F, Reitner J, Schumann-Kindel G (2001) Sponge-microbe associations and their importance for sponge bioprocess engineering. Hydrobiologia 461: 55-62
Glud RN, Holby O, Hoffmann F, Canfield DE (1998) Benthic mineralization and exchange in Arctic sediments (Svalbard, Norway). Marine Ecology Progress Series 173: 237-251
Høst 2012: BIO-318
Vår 2012: GEOVI-344
Høst 2011: BIO-318
Vår 2011: GEOVI-344
Høst 2010: BIO-318
Project management
Research consultant