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Items where Author is "Janssen, Felix"

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Number of items: 53.

Article

Braeckman, U. , Janssen, F. , Lavik, G. , Elvert, M. , Marchant, H. , Buckner, C. , Bienhold, C. and Wenzhöfer, F. (2018)
Carbon and nitrogen turnover in the Arctic deep sea: in situ benthic community response to diatom and coccolithophorid phytodetritus ,

Biogeosciences, 15 (21), pp. 6537-6557 .

doi:https://doi.org/10.5194/bg-15-6537-2018 , hdl:10013/epic.677fcaf4-092c-416a-879f-f6836558da77

Article

Ahmerkamp, S. , Winter, C. , Krämer, K. , Beer, D. d. , Janssen, F. , Friedrich, J. , Kuypers, M. M. M. and Holtappels, M. (2017)
Regulation of benthic oxygen fluxes in permeable sediments of the coastal ocean ,

Limnology and Oceanography .

doi:https://doi.org/10.1002/lno.10544 , hdl:10013/epic.50753

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Article

Donis, D. , Janssen, F. , Liu, B. , Wenzhöfer, F. , Dellwig, O. , Escher, P. , Spitzy, A. and Böttcher, M. E. (2017)
Biogeochemical impact of submarine ground water discharge on coastal surface sands of the southern Baltic Sea ,

Estuarine Coastal and Shelf Science, 189 , pp. 131-142 .

doi:https://doi.org/10.1016/j.ecss.2017.03.003 , hdl:10013/epic.51453

Article

Donis, D. , Janssen, F. , Liu, B. , Wenzhöfer, F. , Dellwig, O. , Escher, P. , Spitzy, A. and Böttcher, M. E. (2017)
Biogeochemical impact of submarine ground water discharge on coastal surface sands of the southern Baltic Sea ,

Estuarine, Coastal and Shelf Science, 189 , pp. 131-142 .

doi:https://doi.org/10.1016/j.ecss.2017.03.003 , hdl:10013/epic.378c82ef-b4a8-491f-9a88-8d88484f7b76

Article

Ahmerkamp, S. , Winter, C. , Janssen, F. , Kuypers, M. M. M. and Holtappels, M. (2015)
The impact of bedform migration on benthic oxygen fluxes ,

Journal of Geophysical Research: Biogeosciences, 120 (11), pp. 2229-2242 .

doi:https://doi.org/10.1002/2015jg003106 , hdl:10013/epic.49651

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Article

Lichtschlag, A. , Donis, D. , Janssen, F. , Jessen, G. L. , Holtappels, M. , Wenzhöfer, F. , Mazlumyan, S. , Sergeeva, N. , Waldmann, C. and Boetius, A. (2015)
Effects of fluctuating hypoxia on benthic oxygen consumption in the Black Sea (Crimean Shelf) ,

Biogeosciences Discussions, 12 , pp. 6445-6488 .

doi:https://doi.org/10.5194/bgd-12-6445-2015 , hdl:10013/epic.45527

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Article

Ahmerkamp, S. , Winter, C. , Janssen, F. , Kuypers, M. M. M. and Holtappels, M. (2015)
The impact of bedform migration on benthic oxygen fluxes ,

Journal of Geophysical Research: Biogeosciences, 120 (11), pp. 2229-2242 .

doi:https://doi.org/10.1002/2015JG003106 , hdl:10013/epic.50539

Article

Friedrich, J. , Janssen, F. , Aleynik, D. , Bange, H. , Boltacheva, N. , Cagatay, M. N. , Dale, A. W. , Etiope, G. , Erdem, Z. , Geraga, M. , Gilli, A. , Gomoiu, M. T. , Hall, P. O. J. , Hanson, D. , He, Y. , Holtappels, M. , Kirf, M. K. , Kononets, M. , Konovalov, S. , Lichtschlag, A. , Livingstone, D. M. , Marinaro, G. , Mazlumyan, S. , Naeher, S. , North, . R. P. , Papatheodorou, G. , Pfannkuche, O. , Prien, R. D. , Rehder, G. , Schubert, C. J. , Soltwedel, T. , Sommer, S. , Stahl, H. , Stanev, E. V. , Teaca, A. , Tengberg, A. , Waldmann, C. , Wehrli, B. and Wenzhöfer, F. (2014)
Investigating hypoxia in aquatic environments: diverse approaches to addressing a complex phenomenon ,

Biogeosciences, 11 , pp. 1215-1259 .

doi:https://doi.org/10.5194/bg-11-1215-2014 , hdl:10013/epic.43101

Article

Chennu, A. , Färber, P. , Volkenborn, N. , Al-Najjar, M. A. A. , Janssen, F. , de Beer, D. and Polerecky, L. (2013)
Hyperspectral imaging of the microscale distribution and dynamics of microphytobenthos in intertidal sediments ,

Limnology and Oceanography: Methods, 11 (10), pp. 511-528 .

doi:https://doi.org/10.4319/lom.2013.11.511 , hdl:10013/epic.45536

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Article

Janssen, F. , Cardenas, M. B. , Sawyer, A. H. , Dammrich, T. , Krietsch, J. and de Beer, D. (2012)
A comparative experimental and multiphysics computational fluid dynamics study of coupled surface-subsurface flow in bed forms ,

Water Resources Research, 48 (8), W08514-n/a .

doi:https://doi.org/10.1029/2012WR011982 , hdl:10013/epic.45537

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Article

Janssen, F. , Cardenas, M. B. , Sawyer, A. H. , Dammrich, T. , Krietsch, J. and de Beer, D. (2012)
A comparative experimental and multiphysics computational fluid dynamics study of coupled surface-subsurface flow in bed forms ,

Water Resources Research, 48 (8), W08514-n/a .

doi:https://doi.org/10.1029/2012WR011982 , hdl:10013/epic.50532

Article

Beck, A. J. , Janssen, F. and de Beer, D. (2011)
The influence of phototrophic benthic biofilms on Cd, Cu, Ni, and Pb transport in permeable sediments ,

Biogeochemistry, 102 (1-3), pp. 167-181 .

doi:https://doi.org/10.1007/s10533-010-9429-2 , hdl:10013/epic.50559

Article

Beck, A. J. , Janssen, F. , Polerecky, L. , Herlory, O. and de Beer, D. (2009)
Phototrophic Biofilm Activity and Dynamics of Diurnal Cd Cycling in a Freshwater Stream ,

Environmental Science & Technology, 43 (19), pp. 7245-7251 .

doi:https://doi.org/10.1021/es900069y , hdl:10013/epic.50560

Article

Cook, P. L. M. , Wenzhöfer, F. , Glud, R. N. , Janssen, F. and Huettel, M. (2007)
Benthic solute exchange and carbon mineralization in two shallow subtidal sandy sediments: Effect of advective pore-water exchange ,

Limnology and Oceanography, 52 (5), pp. 1943-1963 .

doi:https://doi.org/10.4319/lo.2007.52.5.1943 , hdl:10013/epic.50561

Article

Meysman, F. J. R. , Galaktionov, O. S. , Cook, P. L. M. , Janssen, F. , Huettel, M. and Middelburg, J. J. (2007)
Quantifying biologically and physically induced flow and tracer dynamics in permeable sediments ,

Biogeosciences, 4 (4), pp. 627-646 .

doi:https://doi.org/10.5194/bg-4-627-2007 , hdl:10013/epic.50563

Article

Precht, E. , Janssen, F. and Huettel, M. (2006)
Near-bottom performance of the Acoustic Doppler Velocimeter (ADV) – a comparative study ,

Aquatic Ecology, 40 (4), pp. 481-492 .

doi:https://doi.org/10.1007/s10452-004-8059-y , hdl:10013/epic.50533

Article

Janssen, F. , Faerber, P. , Huettel, M. , Meyer, V. and Witte, U. (2005)
Pore-water advection and solute fluxes in permeable marine sediments (I): Calibration and performance of the novel benthic chamber systemSandy ,

Limnology and Oceanography, 50 (3), pp. 768-778 .

doi:https://doi.org/10.4319/lo.2005.50.3.0768 , hdl:10013/epic.50541

Article

Janssen, F. , Huettel, M. and Witte, U. (2005)
Pore-water advection and solute fluxes in permeable marine sediments (II): Benthic respiration at three sandy sites with different permeabilities (German Bight, North Sea) ,

Limnology and Oceanography, 50 (3), pp. 779-792 .

doi:https://doi.org/10.4319/lo.2005.50.3.0779 , hdl:10013/epic.50542

Article

Ehrenhauss, S. , Witte, U. , Janssen, F. and Huettel, M. (2004)
Decomposition of diatoms and nutrient dynamics in permeable North Sea sediments ,

Continental Shelf Research, 24 (6), pp. 721-737 .

doi:https://doi.org/10.1016/j.csr.2004.01.002 , hdl:10013/epic.50534

Article

Viollier, E. , Rabouille, C. , Apitz, S. , Breuer, E. , Chaillou, G. , Dedieu, K. , Furukawa, Y. , Grenz, C. , Hall, P. , Janssen, F. , Morford, J. , Poggiale, J. C. , Roberts, S. , Shimmield, T. , Taillefert, M. , Tengberg, A. , Wenzhöfer, F. and Witte, U. (2003)
Benthic biogeochemistry: state of the art technologies and guidelines for the future of in situ survey ,

Journal of Experimental Marine Biology and Ecology, 285-286 , pp. 5-31 .

doi:https://doi.org/10.1016/S0022-0981(02)00517-8 , hdl:10013/epic.50535

Article

Berg, P. , Røy, H. , Janssen, F. , Meyer, V. , Jørgensen, B. , Huettel, M. and de Beer, D. (2003)
Oxygen uptake by aquatic sediments measured with a novel non-invasive eddy-correlation technique ,

Marine Ecology Progress Series, 261 , pp. 75-83 .

doi:https://doi.org/10.3354/meps261075 , hdl:10013/epic.50540

Article

Treude, T. , Janssen, F. , Queisser, W. and Witte, U. (2002)
Metabolism and decompression tolerance of scavenging lysianassoid deep-sea amphipods ,

Deep Sea Research Part I: Oceanographic Research Papers, 49 (7), pp. 1281-1289 .

doi:https://doi.org/10.1016/S0967-0637(02)00023-7 , hdl:10013/epic.50536

Article

Janssen, F. , Treude, T. and Witte, U. (2000)
Scavenger assemblages under differing trophic conditions: a case study in the deep Arabian Sea ,

Deep Sea Research Part II: Topical Studies in Oceanography, 47 (14), pp. 2999-3026 .

doi:https://doi.org/10.1016/S0967-0645(00)00056-4 , hdl:10013/epic.50537

Conference

Conference -Talk

Loebl, M. , Boetius, A. , Kanzow, T. , Soltwedel, T. , Appen, W. J. v. , Bergmann, M. , Bracher, A. , Iversen, M. , Janssen, F. , Koch, B. , Lochthofen, N. , Metfies, K. , Niehoff, B. , Eva-Maria Nöthig, E. M. , Purser, A. , Rabe, B. , Schewe, I. , Torres-Valdes, S. , Wenzhoefer, F. and Wulff, T. (2019)
A comprehensive view on ocean processes by the multidisciplinary Arctic Ocean Observatory FRAM ,

EGU 2019, Vienna, Austria, 7 April 2019 - 12 April 2019 .

hdl:10013/epic.8bd89949-1a31-4884-a08c-9bf33e66aa9d

Conference -Poster

Janssen, F. , Vonnahme, T. , Molari, M. , Wenzhöfer, F. , Haeckel, M. and Boetius, A. (2018)
Experimental polymetallic nodule mining affects deep-sea microbial communities and functions ,

Deep-Sea Biology Symposium, Monterey, California, USA, 10 September 2018 - 14 September 2018 .

hdl:10013/epic.ded50a82-9031-4db0-8999-9ab35f8b4e2d

Conference -Poster

Hauquier, F. , Macheriotou, L. , Bezerra, T. N. , Egho, G. , Martínez Arbizu, P. , Janssen, F. and Vanreusel, A. (2018)
Meiofaunal communities in the Clarion-Clipperton Zone: geographic distribution and link with environmental conditions ,

Deep-Sea Biology Symposium, Monterey, California, USA, 10 September 2018 - 14 September 2018 .

hdl:10013/epic.a9bcc517-ee85-4a35-b3dd-5c359eb8c5d2

Conference -Invited talk

Janssen, F. (2018)
Deep Ocean Observing Strategy Science Questions ,

OOI Deep Ocean Observing Workshop, Seattle, Washington, USA, 27 August 2018 - 29 August 2018 .

hdl:10013/epic.9b71e0c0-d840-468b-a96c-168e4228c74a

Conference -Talk

Janssen, F. , van Oevelen, D. and JPIO Mining Impact, W. T. (2017)
Biogeochemistry and ecosystem functioning of nodule fields (JPIO Mining Impact WP3) ,

JPIO MiningImpact Annual Meeting, Bremen, Germany, 13 February 2017 - 15 February 2017 .

hdl:10013/epic.50550

Conference -Poster

Vonnahme, T. , Janssen, F. , Molari, M. , Wenzhöfer, F. and Boetius, A. (2017)
Slow microbial growth and recovery of microbial community structure after disturbances in the DISCOL experimental area ,

JPIO MiningImpact Annual Meeting, Bremen, Germany, 13 February 2017 - 15 February 2017 .

hdl:10013/epic.50551

Conference -Poster

Purser, A. , Marcon, Y. , Janssen, F. , Hoving, H. J. T. , Piatkowski, U. , Bluhm, H. and Boetius, A. (2017)
The importance of manganese nodules for the life cycle of deep sea incirrate octopods ,

JPIO MiningImpact Annual Meeting, Bremen, Germany, 13 February 2017 - 15 February 2017 .

hdl:10013/epic.50552

Conference -Talk

Vonnahme, T. , Janssen, F. , Molari, M. , Wenzhöfer, F. and Boetius, A. (2016)
Effects of simulated deep-sea mining impacts on microbial communities and functions in the DISCOL experimental area ,

EU FP7 MIDAS final meeting, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50544

Conference -Talk

Janssen, F. and MIDAS WP10, T. (2016)
MIDAS WP10 New monitoring technology: Overview of activities and achievements ,

EU FP7 MIDAS final meeting, Gent, Belgium, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50543

Conference -Talk

Marcon, Y. , Purser, A. , Janssen, F. , Lins, L. , Brown, A. and Boetius, A. (2016)
Megabenthic community structure within and surrounding the DISCOL Experimental Area 26 years after simulated manganese nodule mining disturbance ,

EU FP7 MIDAS final meeting, Gent, Belgium, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50545

Conference -Talk

Hauquier, F. , Mevenkamp, L. , Great, E. , Bezerra, T. N. , Lins, L. , Janssen, F. , Vonnahme, T. , Boetius, A. and Vanreusel, A. (2016)
Meiofauna response to physical disturbance at the DEA: the importance of scale to identify long-term effects ,

EU FP7 MIDAS final meeting, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50546

Conference -Poster

Vonnahme, T. , Janssen, F. , Molari, M. , Wenzhöfer, F. and Boetius, A. (2016)
Slow microbial growth and recovery of microbial community structure after disturbances in the DISCOL experimental area ,

EU FP7 MIDAS final meeting, Gent, Belgium, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50549

Conference -Talk

Vanreusel, A. , Janssen, F. and MIDAS D10.4, A. t. (2016)
Tools for Rapid Biodiversity Assessment in the deep-sea: an overview ,

EU FP7 MIDAS final meeting, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50547

Conference -Poster

Purser, A. , Marcon, Y. , Janssen, F. , Hoving, H. J. T. , Piatkowski, U. , Vecchione, M. , Eason, D. and Boetius, A. (2016)
The importance of manganese nodules for the life cycle of deep sea incirrate octopi ,

EU FP7 MIDAS final meeting, Gent, Belgium, 3 October 2016 - 7 October 2016 .

hdl:10013/epic.50548

Conference -Talk

van Oevelen, D. and Janssen, F. (2015)
Biogeochemistry and ecosystem functioning of nodule fields (JPIO Mining Impact WP3) ,

Kick off meeting JPI Ocean Pilot Action 'Ecological Aspects of Deep-Sea Mining', Kiel, Germany, 27 January 2015 - 28 January 2015 .

hdl:10013/epic.45534

Conference -Talk

Boetius, A. , Wenzhöfer, F. and Janssen, F. (2015)
SONNE Cruise leg SO242‐2 ,

Kick off meeting JPI Ocean Pilot Action 'Ecological Aspects of Deep-Sea Mining', Kiel, Germany, 27 January 2015 - 28 January 2015 .

hdl:10013/epic.45529 Item availablity restricted.

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Conference -Talk

Janssen, F. , Haeckel, M. , Wenzhöfer, F. and Vonnahme, T. (2015)
Disturbance effects on sediment biogeochemistry: introduction to recent investigations at the DISCOL Experimental Area (DEA, Peru Basin, tropical SE Pacific) ,

EU FP7 MIDAS General Assembly, Sintra, Portugal, 16 November 2015 - 20 November 2015 .

hdl:10013/epic.46851

Conference -Talk

Janssen, F. , Wenzhöfer, F. , Donis, D. , Schewe, I. , Soltwedel, T. and Boetius, A. (2014)
Benthic oxygen flux observations as a measure of ecosystem state and impacts: strengths, limitations, and available technologies ,

EU FP7 MIDAS General Assembly, Hotel San Miguel, Azores, Portugal, 20 October 2014 - 24 October 2014 .

hdl:10013/epic.45528

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Conference -Invited talk

Janssen, F. and Boetius, A. (2014)
Gegenwärtige und geplante nationale und internationale Aktivitäten und Programme zum Thema Tiefseebergbau und Umweltfolgen ,

Workshop Nachhaltiger Tiefsee-Bergbau, Jacobs University, Bremen, Germany, 7 October 2014 - 7 October 2014 .

hdl:10013/epic.45533

Conference -Talk

Donis, D. , Janssen, F. , Wenzhöfer, F. , Dellwig, O. , Escher, P. and Böttcher, M. E. (2014)
Impact of submarine groundwater discharge on biogeochemical processes and benthic fluxes in coastal sands ,

Goldschmidt Conference 2014, Sacramento, CA, USA, 8 June 2014 - 13 June 2014 .

hdl:10013/epic.43674 Item availablity restricted.

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Conference -Poster

Ahmerkamp, S. , Winter, C. , Janssen, F. , de Beer, D. , Kuypers, M. M. M. and Holtappels, M. (2014)
The interaction of migrating bedforms and pressure-driven advective porewater flow ,

2014 Ocean Sciences Meeting, Honolulu, Hawaii, USA, 23 February 2014 - 28 February 2014 .

hdl:10013/epic.45532

Conference -Poster

Schewe, I. , Janssen, F. , Boebel, O. , Bracher, A. , Kanzow, T. , Metfies, K. , Nöthig, E. M. , Schauer, U. , Soltwedel, T. and Boetius, A. (2014)
FRAM: A multidisciplinary observatory in the North Atlantic - Arctic Ocean transition zone ,

Arctic Observing Summit 2014, Helsinki, Finland, 9 April 2014 - 11 April 2014 .

hdl:10013/epic.43662

Conference -Talk

Boetius, A. , Janssen, F. and Schewe, I. (2013)
FixO3 Service Activities: Access to data products and knowledge ,

EU FP7 FixO3 Kick off meeting, Rome, Italy, 18 November 2013 - 20 November 2013 .

hdl:10013/epic.45523

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Conference -Talk

Janssen, F. and Boetius, A. (2013)
EU-FP7 MIDAS: Introduction to WP10 (New monitoring technologies) ,

EU FP7 MIDAS Kick off meeting, Old Windsor, United Kingdom, 12 November 2013 - 15 November 2013 .

hdl:10013/epic.45526

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Conference -Poster

Janssen, F. , Soltwedel, T. , Schewe, I. , Schauer, U. and Boetius, A. (2013)
FRAM: a multidisciplinary observatory in the North Atlantic ‐ Arctic Ocean transition zone ,

EMSO Ocean Observatories Challenges and Progresses conference , INGV, Rome, IT, 13 November 2013 - 15 November 2013 .

hdl:10013/epic.42741

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Conference -Talk

Friedrich, J. , Janssen, F. , He, Y. , Holtappels, M. , Konovalov, S. , Prien, R. D. , Rehder, G. and Stanev, E. (2013)
Monitoring hypoxia: diverse approaches to addressing a complex phenomenon with focus on the Black Sea ,

Marine Research Horizon 2020, Varna, Bulgaria, 17 September 2013 - 20 September 2013 .

hdl:10013/epic.45530

Preview

Conference -Talk

Boetius, A. and Janssen, F. (2012)
FRAM: Progress towards a multidisciplinary – and potentially cabled – observatory at the North Atlantic-Arctic transition ,

Deep Ocean Cabled Observatories, Amsterdam, The Netherlands, 24 May 2012 - 25 May 2012 .

hdl:10013/epic.45531

Conference -Invited talk

Janssen, F. , Waldmann, C. , Boetius, A. and Hypox, P. T. (2012)
Oxygen observation activities within the FP7 EU-project HYPOX: a step towards hypoxia monitoring a rapidly changing world ,

2nd International Symposium Effects of Climate Change on the World’s Oceans, Yeosu, Korea, 13 May 2012 - 20 May 2012 .

hdl:10013/epic.45535

Preview

Conference -Community Service

Soltwedel, T. , Schloesser, M. and Janssen, F. (2012)
Improved oxygen monitoring in Fram Strait deep waters (Video) ,

IPY 2012, From Knowledge to Action Conference, Montreal, Kanada, 22 April 2012 - 27 April 2012 .

hdl:10013/epic.39139

Miscellaneous

Janssen, F. , Soltwedel, T. , Schewe, I. , Jacob, M. and Hasemann, C. (2014)
Shaken and stirred: getting a taste of mining impacts on deep-sea sediments ,

[Miscellaneous]

hdl:10013/epic.43480