Items where Author is "Piontek, Judith"
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Number of items: 46.
Article
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Article
Engel, A. , Bracher, A. , Dinter, T. , Endres, S. , Grosse, J. , Metfies, K.  ORCID: https://orcid.org/0000-0003-3073-8033, Peeken, I. , Piontek, J. , Salter, I. and Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827
(2019)
Inter-Annual Variability of Organic Carbon Concentration in the Eastern Fram Strait During Summer (2009–2017) ,
Frontiers in Marine Science
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doi:https://doi.org/10.3389/fmars.2019.00187
, hdl:10013/epic.d144b85f-c4e1-474b-bf7c-02487b4f7f3f
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Article
Fadeev, E. ORCID: https://orcid.org/0000-0002-2289-2949, Salter, I. ORCID: https://orcid.org/0000-0002-4513-0314, Schourup-Kristensen, V. , Metfies, K. ORCID: https://orcid.org/0000-0003-3073-8033, Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827, Engel, A. , Piontek, J. , Boetius, A. ORCID: https://orcid.org/0000-0003-2117-4176 and Bienhold, C. ORCID: https://orcid.org/0000-0003-2269-9468
(2018)
Microbial Communities in the East and West Fram Strait During Sea Ice Melting Season ,
Frontiers in Marine Science
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doi:https://doi.org/10.3389/fmars.2018.00429
, hdl:10013/epic.c75ca22f-ac8c-48a4-83ab-c29a96ddcd0f
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Article
Attard, K. M. , Søgaard, D. H. , Piontek, J. , Lange, B. A. , Katlein, C. ORCID: https://orcid.org/0000-0003-2422-0414, Sørensen, H. L. , McGinnis, D. F. , Rovelli, L. , Rysgaard, S. , Wenzhöfer, F. ORCID: https://orcid.org/0000-0002-4621-0586 and Glud, R. N.
(2018)
Oxygen fluxes beneath Arctic land-fast ice and pack ice: towards estimates of ice productivity ,
Polar Biology
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doi:https://doi.org/10.1007/s00300-018-2350-1
, hdl:10013/epic.ed1ac0b7-024d-4743-b49c-f44b90355d93
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Article
Engel, A. , Piontek, J. , Metfies, K. ORCID: https://orcid.org/0000-0003-3073-8033, Endres, S. , Peeken, I. ORCID: https://orcid.org/0000-0003-1531-1664, Gäbler-Schwarz, S. and Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827
(2017)
Inter-annual variability of transparent exopolymer particles in the Arctic Ocean reveals high sensitivity to ecosystem changes ,
Scientific Reports,
7
(4129)
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doi:https://doi.org/10.1038/s41598-017-04106-9
, hdl:10013/epic.51718
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Article
Sperling, M. , Piontek, J. , Engel, A. , Wiltshire, K. H. , Niggemann, J. , Gerdts, G. ORCID: https://orcid.org/0000-0003-0872-3927 and Wichels, A. ORCID: https://orcid.org/0000-0002-2060-1845
(2017)
Combined carbohydrates support rich communities of particle-associated marine bacterioplankton ,
Frontiers in Microbiology
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doi:https://doi.org/10.3389/fmicb.2017.00065
, hdl:10013/epic.50632
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Article
Galgani, L. , Piontek, J. and Engel, A.
(2016)
Biopolymers form a gelatinous microlayer at the air-sea interface when Arctic sea ice melts ,
Scientific Reports,
6
,
p. 10
.
hdl:10013/epic.51112
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Article
Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827, Bracher, A. ORCID: https://orcid.org/0000-0003-3025-5517, Engel, A. , Metfies, K. ORCID: https://orcid.org/0000-0003-3073-8033, Niehoff, B. , Peeken, I. ORCID: https://orcid.org/0000-0003-1531-1664, Bauerfeind, E. , Cherkasheva, A. , Gäbler-Schwarz, S. , Hardge, K. , Kilias, E. , Kraft, A. , Mebrahtom Kidane, Y. , Lalande, C. , Piontek, J. , Thomisch, K. ORCID: https://orcid.org/0000-0002-7144-8369 and Wurst, M.
(2015)
Summertime plankton ecology in Fram Strait - a compilation of long- and short-term observations ,
Polar Research,
34
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doi:https://doi.org/10.3402/polar.v34.23349
, hdl:10013/epic.46457
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Article
Piontek, J. , Sperling, M. , Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827 and Engel, A.
(2015)
Multiple environmental changes induce interactive effects on bacterial degradation activity in the Arctic Ocean ,
Limnology and Oceanography,
60
(4),
pp. 1392-1410
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doi:https://doi.org/10.1002/lno.10112
, hdl:10013/epic.46265
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Article
Piontek, J. , Sperling, M. , Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827 and Engel, A.
(2014)
Regulation of bacterioplankton activity in Fram Strait (Arctic Ocean) during early summer: The role of organic matter supply and temperature ,
Journal of Marine Systems,
132
,
pp. 83-94
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doi:https://doi.org/10.1016/j.jmarsys.2014.01.003
, hdl:10013/epic.43193
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Article
Engel, A. , Piontek, J. , Grossart, H. P. , Riebesell, U. , Schulz, K. G. and Sperling, M.
(2014)
Impact of CO2 enrichment on organic matter dynamics during nutrient induced coastal phytoplankton blooms ,
Journal of Plankton Research,
36
(3),
pp. 641-657
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hdl:10013/epic.51107
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Article
Engel, A. , Borchard, C. , Piontek, J. , Schulz, K. G. , Riebesell, U. and Bellerby, R.
(2013)
CO2 increases C-14 primary production in an Arctic plankton community ,
Biogeosciences,
10
(3),
pp. 1291-1308
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doi:https://doi.org/10.5194/bg-10-1291-2013
, hdl:10013/epic.51100
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Article
Motegi, C. , Tanaka, T. , Piontek, J. , Brussaard, C. , Gattuso, J. P. and Weinbauer, M. G.
(2013)
Effect of CO2 enrichment on bacterial metabolism in an Arctic fjord ,
Biogeosciences,
10
(5),
pp. 3285-3296
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doi:https://doi.org/10.5194/bg-10-3285-2013
, hdl:10013/epic.51102
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Article
Sperling, M. , Piontek, J. , Gerdts, G. ORCID: https://orcid.org/0000-0003-0872-3927, Wichels, A. ORCID: https://orcid.org/0000-0002-2060-1845, Schunk, H. , Roy, A. , La Roche, J. , Gilbert, J. , Nissimov, J. , Bittner, L. , Romac, S. , Riebesell, U. and Engel, A.
(2013)
Effect of elevated CO2 on the dynamics of particle-attached and free-living bacterioplankton communities in an Arctic fjord ,
Biogeosciences,
10
,
pp. 181-191
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doi:https://doi.org/10.5194/bg-10-181-2013
, hdl:10013/epic.40684
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Article
Piontek, J. , Borchard, C. , Sperling, M. , Schulz, K. G. , Riebesell, U. and Engel, A.
(2013)
Response of bacterioplankton activity in an Arctic fjord system to elevated pCO2: results from a mesocosm pertubation study ,
Biogeosciences,
10
(1),
pp. 297-314
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doi:https://doi.org/10.5194/bg-10-297-2013
, hdl:10013/epic.51103
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Article
Piontek, J. , Lunau, M. , Händel, N. , Borchard, C. , Wurst, M. and Engel, A.
(2010)
Acidification increases microbial polysaccharide degradation in the ocean ,
Biogeosciences, 71624.,
1615
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hdl:10013/epic.35262
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Article
Harlay, J. , Chou, L. , De Bodt, C. , Van Oostende, N. , Piontek, J. , Suykens, K. , Engel, A. , Sabbe, K. , Groom, S. , Delille, B. and Borges, A. V.
(2010)
Biogeochemistry and carbon mass balance of a coccolithophore bloom in the northern Bay of Biscay (June 2006) ,
Deep Sea Research I,
58
,
pp. 111-127
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hdl:10013/epic.36727
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Article
Harlay, J. , De Bodt, C. , Engel, A. , Jansen, S. , d'Hoop, Q. , Piontek, J. , Van Oostende, N. , Groom, S. , Sabbe, K. and Chou, L.
(2009)
Abundance and size distribution of transparent exopolymer particles (TEP) in a coccolithophorid bloom in the northern Bay of Biscay ,
Deep Sea Research I.,
56
,
pp. 1251-1265
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doi:https://doi.org/10.1016/j.dsr.2009.01.014
, hdl:10013/epic.33297
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Article
Piontek, J. , Händel, N. , Langer, G. , Wohlers, J. , Riebesell, U. and Engel, A.
(2009)
Effects of rising temperature on the formation and microbial degradation of marine diatom aggregates ,
Aquatic Microbial Ecology:,
54
,
pp. 305-318
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doi:https://doi.org/10.3354/ame01273
, hdl:10013/epic.32447
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Thesis
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Thesis
-PhD
Piontek, J.
(2009)
Effects of temperature and pCO2 on the degradation of organic matter in the ocean ,
PhD thesis,
University of Bremen.
hdl:10013/epic.34349
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Conference
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Conference
-Talk
Metfies, K. ORCID: https://orcid.org/0000-0003-3073-8033, Noethig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827, Bracher, A. ORCID: https://orcid.org/0000-0003-3025-5517, Engel, A. , Niehoff, B. , Peeken, I. ORCID: https://orcid.org/0000-0003-1531-1664, Bauerfeind, E. , Cherkasheva, A. , Gaebler-Schwarz, S. , Hardge, K. , Kilias, E. , Kraft, A. , Lalande, C. , Piontek, J. , Thomisch, K. ORCID: https://orcid.org/0000-0002-7144-8369 and Wurst, M.
(2013)
Phytoplankton Ecology and Biogeochemistry in a Changing Arctic Ocean - Molecular Genetics meets Biological Oceanography ,
When Genetics Meets Oceanography,
Observatoire Oceanologique Université Pierre et Marie Curie & Centre national de la recherche Scientifique, Banyuls sur Mer, France,
14 October 2013 - 16 October 2013
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hdl:10013/epic.42553
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Conference
-Poster
Harlay, J. , Chou, L. , DeBodt, C. , vanOostende, N. , Piontek, J. , Engel, A. , Sabbe, K. , Groom, S. and Borges, A. V.
(2011)
Biogeochemistry and carbon mass balance of a coccolithophore bloom in the northern Bay of Biscay (June 2006) ,
European Geosciences Union, General Assembly, 3.-8.4.2011, Vienna, Austria.
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hdl:10013/epic.37182
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Conference
-Invited talk
Engel, A. , Borchard, C. , Bellerby, R. , Klavsen, S. , Piontek, J. , Riebesell, U. and Schulz, K.
(2011)
Sensitivity of DOC production to pCO2 in arctic pelagic communities: Insights from the 2010 Svalbard mesocosm study ,
EPOCA Third Annual Meeting, Royal Academy of Belgium for Science and the Arts, BrusselsMay
.
hdl:10013/epic.37519
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Conference
-Talk
Piontek, J. , Händel, N. , Sperling, M. , Riebesell, U. and Engel, A.
(2010)
Effects of rising seawater CO2 on the bacterial turnover of organic matter in temperate marine systems ,
13th ISME Symposium, Seattle.
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hdl:10013/epic.35849
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Conference
-Talk
Harlay, J. , Borges, A. V. , Delille, B. , Suykens, K. , De Bodt, C. , Sabbe, K. , van Oostende, N. , Engel, A. , Piontek, J. and Chou, L.
(2010)
Towards a comprehensive C-budgeting approach of a cocoliothophorid bloom in the northern Bay of Biscay: results from PEACE projec ,
XII International Symposium on Oceanography of the Bay of Biscay, 3-6-May, Brest, France.
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hdl:10013/epic.35277
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Conference
-Poster
Harlay, J. , Borges, A. V. , De Bodt, C. , Van Oostende, N. , Piontek, J. , Suykens, K. , Engel, A. , Sabbe, K. , Groom, S. and Chou, L.
(2009)
Biogeochemistry and carbon budget during a coccolithophorid bloom in the northern Bay of Biscay (June 2006) ,
EGU General Assembly, Vienna, AustriaApril.
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hdl:10013/epic.32805
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Conference
-Poster
Händel, N. , Piontek, J. , Harlay, J. , de Bodt, C. , Chou, L. and Engel, A.
(2009)
Dynamics of polysaccharides and transparent exopolymer particles during a coccolithophore bloom in the Bay of Biscay ,
ASLO, Aquatic Sciences Meeting 2009, Nice.
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hdl:10013/epic.31840
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Conference
-Poster
Chou, L. , Harlay, J. , De Bodt, C. , Roevros, N. , Borges, A. V. , Suykens, K. , Delille, B. , Sabbe, K. , Van Oostende, N. , Engel, A. , Piontek, J. , Borchard, C. , Händel, N. and Groom, S.
(2009)
Role of pelagic calcification and export of carbonate production in climate change ,
SOLAS Open Science Conference, Barcelona
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hdl:10013/epic.34355
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Conference
-Poster
Piontek, J. , Händel, N. , Borchard, C. , Lunau, M. , Chou, L. and Engel, A.
(2009)
The significance of bacterial polysaccharide degradation for carbon export, today and in the future ocean ,
ASLO Conference, NiceJanuary
.
hdl:10013/epic.31903
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Conference
-Poster
Chou, L. , Harlay, J. , De Bodt, C. , Roevros, N. , Borges, A. V. , Suykens, K. , Delille, B. , Sabbe, K. , Van Oostende, N. , Engel, A. , Piontek, J. , Borchard, C. , Händel, N. , Schmidt, S. and Groom, S.
(2008)
BIOGEOCHEMICAL INVESTIGATIONS OF COCCOLITHOPHORE BLOOMS ALONG THE CONTENTAL MARGIN OF THE NORTHERN BAY OF BISCAY: HIGHLIGHTS OF THE PEACE PROJECT ,
Second International Symposium on the Ocean in a High CO2 World, Monaco.
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hdl:10013/epic.31241
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Conference
-Talk
Chou, L. , Harlay, J. , De Bodt, C. , Roevros, N. , Borges, A. V. , Suykens, K. , Delille, B. , Sabbe, K. , Van Oostende, N. , Engel, A. , Piontek, J. , Händel, N. , Groom, S. and Schmidt, S.
(2008)
Biogeochemistry of Coccolithophore Blooms along the Continental Margin of the Northern Bay of Biscay. ,
Eur-Oceans Final Meeting, RomeNovember 2008.
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hdl:10013/epic.32409
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Conference
-Talk
Van Oostende, N. , Vyverman, W. , Harlay, J. , De Bodt, C. , Chou, L. , Suykens, K. , Borges, A. V. , Piontek, J. , Engel, A. and Sabbe, K.
(2008)
Coccolithophore bloom dynamics shape bacterioplankton communities in the northern Bay of Biscay. ,
The 12th International Symposium on Microbial Ecology (ISME 12), Cairns, AustraliaAugust 2008.
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hdl:10013/epic.32410
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Conference
-Poster
Händel, N. , Piontek, J. , Wohlers, J. , Riebesell, U. and Engel, A.
(2008)
Dynamics of dissolved neutral and acidic sugars in seawater ,
Ocean Science Meeting, March 2-7, 2008, Orlando, Florida..
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hdl:10013/epic.30206
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Conference
-Poster
Piontek, J. , Händel, N. , Lunau, M. , Borchard, C. and Engel, A.
(2008)
Effects of ocean acidification on the bacterial degradation of organic matter ,
Second International Symposium on the ocean in a high-CO2 world, October 6-9, 2008, Monaco.
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hdl:10013/epic.31275
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Conference
-Talk
Piontek, J. , Borchard, C. , Händel, N. and Engel, A.
(2008)
Effects of rising CO2 on microbial degradation of organic matter derived from coccolithophores ,
PEACE annual workshop, February 2008, Brussels.
.
hdl:10013/epic.30157
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Conference
-Talk
Borchard, C. , Piontek, J. , Händel, N. and Engel, A.
(2008)
Investigating the combined effect of pCO2 and temperature on Emiliania huxleyi using a chemostat system ,
PEACE annual workshop, February 2008, Brussels.
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hdl:10013/epic.30161
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Conference
-Poster
Lunau, M. , Wurst, M. , Piontek, J. , Grossart, H. P. , Riebesell, U. and Engel, A.
(2008)
Potential effects of ocean acidification on microbial organic matter degradation during an offshore mesocosm experiment ,
Ocean Science Meeting, March 2-7, 2008, Orlando, Florida.
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hdl:10013/epic.30199
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Conference
-Poster
Lunau, M. , Wurst, M. , Piontek, J. , Grossart, H. P. , Riebesell, U. and Engel, A.
(2008)
Potential effects of ocean acidification on microbial organic matter degradation during an offshore mesocosm experiment. ,
SOPRAN Annual Meeting 2008, Warnemünde, Germany.
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hdl:10013/epic.30202
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Conference
-Talk
Schartau, M. , Engel, A. , Piontek, J. and Rost, B. ORCID: https://orcid.org/0000-0001-5452-5505
(2007)
CO2 sensitivities: DOC production and acidification ,
Modelling the response of marine ecosystems to increasing levels of CO2. Modelling Workshop, 12-14 February 2007, Plymouth, U.K..
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hdl:10013/epic.27876
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Conference
-Poster
Piontek, J. , Lunau, M. , Händel, N. , Jansen, S. , Neu, T. and Engel, A.
(2007)
Effects of rising temperature and decreasing pH on degradation activity of marine bacterioplankton ,
10th Symposium on Aquatic Microbial Ecology, September 2-7 2007, Faro, Portugal.
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hdl:10013/epic.27689
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Conference
-Talk
Piontek, J. , Händel, N. and Engel, A.
(2007)
Effects of rising temperature and pCO2 on bacterial degradation processes in marine systems ,
European Geosciences Union, General Assembly 2007, Vienna.-20.4.2007.
.
hdl:10013/epic.26808
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Conference
-Talk
Piontek, J. , Händel, N. and Engel, A.
(2007)
Effects of temperature on the microbial decomposition of particle aggregates in the ocean ,
42nd European Marine Biology Symposium, August 27-31 2007, Kiel, Germany.
.
hdl:10013/epic.27690
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Conference
-Talk
Lunau, M. , Koch, S. , Piontek, J. , Händel, N. and Engel, A.
(2007)
Investigating the effects of changes in CO2 concentration on marine plankton dynamics with batch and chemostat systems ,
42nd EMBS, August 27-31 2007, Kiel, Germany
.
hdl:10013/epic.27651
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Conference
-Talk
Piontek, J. , Händel, N. , Lunau, M. and Engel, A.
(2007)
Investigating the effects of changing CO2 concentration on a natural marine plankton community using a chemostat system ,
International Union of Geodesy and Geophysics, General Assembly, Perugia, July 2-13
.
hdl:10013/epic.26958
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Conference
-Poster
Piontek, J. , Langer, G. , Händel, N. , Riebesell, U. , Wohlers, J. and Engel, A.
(2006)
Effects of rising temperature on the decomposition of phytoplankton aggregates ,
3rd AQUASHIFT workshop, 14.-16.11.2006, Kiel.
.
hdl:10013/epic.25955
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Conference
-Poster
Piontek, J. , Langer, G. , Händel, N. , Riebesell, U. and Engel, A.
(2006)
Effects of rising temperature on the microbial decomposition of sinking organic material in the surface ocean ,
ESSP Global Change Open Science Conference, 9.-12.11.2006, Beijing, China.
.
hdl:10013/epic.26013
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Conference
-Poster
Engel, A. , Langer, G. , Piontek, J. , Händel, N. and Szlosek, J.
(2005)
Wie verändert sich die Biogeochemie des Ozeans im Anthropozaen? ,
Wissenswerte, 28.-30.11.2005, Bremen, Germany.
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hdl:10013/epic.24959
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