Items where Author is "Hefter, Jens"
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Number of items: 82.
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Article
Park, E. , Hefter, J.  ORCID: https://orcid.org/0000-0002-5823-1966, Fischer, G. , Iversen, M. , Ramondenc, S. , Nöthig, E. M. ORCID: https://orcid.org/0000-0002-7527-7827 and Mollenhauer, G.
(2019)
Seasonality of archaeal lipid flux and GDGT-based thermometry in sinking particles of high latitude regions: Fram Strait (79° N) and Antarctic Polar Front (50° S) ,
Biogeosciences
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doi:https://doi.org/10.5194/bg-2019-34
, hdl:10013/epic.62e322bd-cd4c-4af2-bbd1-7a3628544d20
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van Maldegem, L. M. , Sansjofre, P. , Weijers, J. W. H. , Wolkenstein, K. , Strother, P. K. , Wörmer, L. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Nettersheim, B. J. , Hoshino, Y. , Schouten, S. , Sinninghe Damsté, J. S. , Nath, N. , Griesinger, C. , Kuznetsov, N. B. , Elie, M. , Elvert, M. , Tegelaar, E. , Gleixner, G. and Hallmann, C.
(2019)
Bisnorgammacerane traces predatory pressure and the persistent rise of algal ecosystems after Snowball Earth ,
Nature Communications,
10
(1)
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doi:https://doi.org/10.1038/s41467-019-08306-x
, hdl:10013/epic.913efb1f-95e7-45e8-8265-2a7238ff31ab
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Article
Winterfeld, M. , Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Dummann, W. , Köhler, P. ORCID: https://orcid.org/0000-0003-0904-8484, Lembke-Jene, L. ORCID: https://orcid.org/0000-0002-6873-8533, Meyer, V. D. ORCID: https://orcid.org/0000-0002-4958-5367, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, McIntyre, C. , Wacker, L. , Kokfelt, U. and Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049
(2018)
Deglacial mobilization of pre-aged terrestrial carbon from degrading permafrost ,
Nature Communications,
9
(1),
p. 3666
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doi:https://doi.org/10.1038/s41467-018-06080-w
, hdl:10013/epic.8e0d9607-54d7-4d96-80f3-ad30f2dabd15
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Article
Crivellari, S. , Chiessi, C. M. , Kuhnert, H. , Häggi, C. , da Costa Portilho-Ramos, R. , Zeng, J. Y. , Zhang, Y. , Schefuß, E. , Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Alexandre, F. , Sampaio, G. and Mulitza, S.
(2018)
Increased Amazon freshwater discharge during late Heinrich Stadial 1 ,
Quaternary Science Reviews,
181
,
pp. 144-155
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doi:https://doi.org/10.1016/j.quascirev.2017.12.005
, hdl:10013/epic.9a96d0ba-2c1a-4db3-b72a-86c68717f9fa
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Article
Lattaud, J. , Kirkels, F. , Peterse, F. , Freymond, C. V. , Eglinton, T. I. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Balzano, S. , Villanueva, L. , van der Meer, M. T. J. , Hopmans, E. C. , Sinninghe Damsté, J. S. and Schouten, S.
(2018)
Long-chain diols in rivers: distribution and potential biological sources ,
Biogeosciences,
15
(13),
pp. 4147-4161
.
doi:https://doi.org/10.5194/bg-15-4147-2018
, hdl:10013/epic.03c56f90-d5e7-4980-aa1d-11ad0e798c9d
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Article
Park, E. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Fischer, G. and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2018)
TEX86 in sinking particles in three eastern Atlantic upweling regimes ,
Organic Geochemistry,
120
,
pp. 151-163
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doi:https://doi.org/10.1016/j.orggeochem.2018.07.015
, hdl:10013/epic.0762fd02-c736-427f-9a0f-3fda7475b335
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Article
Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Lohmann, G. ORCID: https://orcid.org/0000-0003-2089-733X, Max, L. , Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2017)
Summer temperature evolution on the Kamchatka Peninsula, Russian Far East, during the past 20000years ,
Climate of the Past,
13
,
pp. 359-377
.
doi:https://doi.org/10.5194/cp-13-359-2017
, hdl:10013/epic.50764
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Article
Jaeschke, A. , Wengler, M. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Ronge, T. ORCID: https://orcid.org/0000-0003-2625-719X, Geibert, W. ORCID: https://orcid.org/0000-0001-8646-2334, Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Gersonde, R. and Lamy, F. ORCID: https://orcid.org/0000-0001-5952-1765
(2017)
A biomarker perspective on dust, productivity, and sea surface temperature in the Pacific sector of the Southern Ocean ,
Geochimica et Cosmochimica Acta,
204
,
pp. 120-139
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doi:https://doi.org/10.1016/j.gca.2017.01.045
, hdl:10013/epic.50665
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Article
Sun, S. , Schefuß, E. , Mulitza, S. , Chiessi, C. M. , Sawakuchi, A. O. , Zabel, M. , Baker, P. A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2017)
Origin and processing of terrestrial organic carbon in the Amazon system: lignin phenols in river, shelf, and fan sediments ,
Biogeosciences,
14
,
pp. 2495-2512
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doi:https://doi.org/10.5194/bg-14-2495-2017
, hdl:10013/epic.51430
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Article
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Naafs, B. D. A. and Zhang, S.
(2017)
Tracing the source of ancient reworked organic matter delivered to the North Atlantic Ocean during Heinrich Events ,
Geochimica et Cosmochimica Acta,
205
,
pp. 211-225
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doi:https://doi.org/10.1016/j.gca.2017.02.008
, hdl:10013/epic.50974
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Article
Fischer, G. , Karstensen, J. , Romero, O. E. , Baumann, K. H. , Donner, B. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Iversen, M. , Fiedler, B. , Monteiro, I. and Körtzinger, A.
(2016)
Bathypelagic particle flux signatures from a suboxic eddy in the oligotrophic tropical North Atlantic: production, sedimentation and preservation ,
Biogeosciences,
13
,
pp. 3203-3223
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doi:https://doi.org/10.5194/bg-13-3203-2016
, hdl:10013/epic.48559
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Article
Meyer, V. D. ORCID: https://orcid.org/0000-0002-4958-5367, Max, L. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2016)
Glacial-to-Holocene evolution of sea surface temperature and surface circulation in the subarctic northwest Pacific and the Western Bering Sea ,
Paleoceanography,
31
(7),
pp. 916-927
.
doi:https://doi.org/10.1002/2015PA002877
, hdl:10013/epic.48386
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Article
Hockun, K. , Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Ho, S. L. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Ohlendorf, C. , Zolitschka, B. , Mayr, C. , Lücke, A. and Schefuß, E.
(2016)
Using distributions and stable isotopes of n-alkanes to disentangle organic matter contributions to sediments of Laguna Potrok Aike, Argentina ,
Organic Geochemistry,
102
,
pp. 110-119
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doi:https://doi.org/10.1016/j.orggeochem.2016.10.001
, hdl:10013/epic.49113
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Article
Winterfeld, M. , Goñi, M. , Just, J. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2015)
Characterization of particulate organic matter in the Lena River delta and adjacent nearshore zone, NE Siberia – Part 2: Lignin-derived phenol compositions ,
Biogeosciences,
12
,
pp. 2261-2283
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doi:https://doi.org/10.5194/bg-12-2261-2015
, hdl:10013/epic.45416
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Article
Kaiser, J. , Ruggieri, N. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Siegel, H. , Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Arz, H. W. and Lamy, F. ORCID: https://orcid.org/0000-0001-5952-1765
(2014)
Lipid biomarkers in surface sediments from the gulf of genoa, Ligurian sea (NW Mediterranean sea) and their potential for the reconstruction of palaeo-environments ,
Deep Sea Research Part I: Oceanographic Research Papers,
89
,
pp. 68-83
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doi:https://doi.org/10.1016/j.dsr.2014.04.009
, hdl:10013/epic.43707
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Article
Naafs, B. D. A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Gruetzner, J. ORCID: https://orcid.org/0000-0001-5445-2393 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2013)
Warming of surface waters in the mid-latitude North Atlantic during Heinrich events ,
Paleoceanography,
28
(1),
pp. 153-163
.
doi:https://doi.org/10.1029/2012PA002354
, hdl:10013/epic.42644
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Article
Naafs, B. D. A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2012)
Application of the long chain diol index (LDI) paleothermometer to the early Pleistocene (MIS 96) ,
Organic Geochemistry,
49
,
pp. 83-85
.
doi:https://doi.org/10.1016/j.orggeochem.2012.05.011
, hdl:10013/epic.39708
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Article
Naafs, B. D. A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Acton, G. , Haug, G. H. , Martínez-Garcia, A. , Pancost, R. and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2012)
Strengthening of North American dust sources during the late Pliocene (2.7Ma) ,
Earth and Planetary Science Letters,
317-31
,
pp. 8-19
.
doi:https://doi.org/10.1016/j.epsl.2011.11.026
, hdl:10013/epic.38646
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Article
Naafs, B. D. A. , Hefter, J. , Ferretti, P. , Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Haug, G. H.
(2011)
Sea surface temperatures did not control the first occurrence of Hudson Strait Heinrich Events during MIS 16 ,
Paleoceanography,
26
(4)
.
doi:https://doi.org/10.1029/2011PA002135
, hdl:10013/epic.38344
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Article
Naafs, B. D. A. , Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Khèlifi, N. , De Schepper, S. and Haug, G. H.
(2010)
Late Pliocene changes in the North Atlantic Current ,
Earth and Planetary Science Letters,
298
(3),
pp. 434-442
.
doi:https://doi.org/10.1016/j.epsl.2010.08.023
, hdl:10013/epic.38277
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Article
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Grützner, J. , Voelker, A. and Naafs, B. D. A.
(2009)
Variability of surface water characteristics and Heinrich‐like events in the Pleistocene midlatitude North Atlantic Ocean: Biomarker and XRD records from IODP Site U1313 (MIS 169) ,
Paleoceanography 24, PA2203
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doi:https://doi.org/10.1029/2008PA001639
, hdl:10013/epic.33241
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Article
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966
(2008)
Analysis of Alkenone Unsaturation Indices with Fast Gas Chromatography/Time-of-Flight Mass Spectrometry ,
Analytical Chemistry
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doi:https://doi.org/10.1021/ac702194m
, hdl:10013/epic.30077
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Article
Benthien, A. ORCID: https://orcid.org/0000-0002-9159-3109, Zondervan, I. , Engel, A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Terbrüggen, A. and Riebesell, U.
(2007)
Carbon isotopic fractionation during a mesocosm bloom experiment dominated by Emiliania huxleyi: Effects of CO2 concentration and primary production ,
Geochimica et cosmochimica acta,
71
(6),
pp. 1528-1541
.
doi:https://doi.org/10.1016/j.gca.2006.12.015
, hdl:10013/epic.24570
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Article
Birgel, D. , Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966
(2004)
Aliphatic lipids in recent sediments of the Fram Strait/Yermak Plateau (Arctic Ocean): Composition, sources and transport processes ,
Marine Chemistry,
88
,
pp. 127-160
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doi:https://doi.org/10.1016/j.marchem.2004.03.006
, hdl:10013/epic.19721
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Article
Thiel, V. , Blumenberg, M. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Pape, T. , Pomponi, S. , Reed, J. , Reitner, J. , Wörheide, G. and Michaelis, W.
(2002)
A chemical view of the most ancient metazoa - biomarker chemotaxonomy of hexactinellid sponges ,
Naturwissenschaften,
89
,
pp. 60-66
.
doi:https://doi.org/10.1007/s00114-001-0284-9
, hdl:10013/epic.15804
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Article
Mueller-Lupp, T. , Bauch, H. A. , Erlenkeuser, H. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kassens, H. and Thiede, J.
(2000)
Changes in the deposition of terrestrial organic matter on the Laptev Sea shelf during the Holocene: evidence from stable carbon isotopes ,
International Journal of Earth Sciences,
89
(3),
pp. 563-568
.
doi:https://doi.org/10.1007/s005310000128
, hdl:10013/epic.15551
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Article
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Boucsein, B. and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2000)
Geochemistry of particulate organic matter in the water column and sediments ,
Berichte zur Polarforschung,
360
,
pp. 79-83
.
hdl:10013/epic.17370
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Article
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Boucsein, B. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kraus, M. , Lau, N. , Schoster, F. , Simstich, J. and Weiel, D.
(2000)
Marine Geology ,
Berichte zur Polarforschung,
360
,
pp. 49-69
.
hdl:10013/epic.17094
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Article
Seifert, R. , Delling, N. , Richnow, H. H. , Kempe, S. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Michaelis, W.
(1999)
Ethylene and methane in the upper water column of the subtropical Atlantic ,
Biogeochemistry,
44
,
pp. 73-91
.
hdl:10013/epic.16741
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Article
Richnow, H. H. , Seifert, R. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Link, M. , Francke, W. , Schaefer, G. and Michaelis, W.
(1997)
Organic pollutants associated with macromolecular soil organic matter: Mode of binding ,
Organic Geochemistry,
26
,
pp. 745-758
.
hdl:10013/epic.16740
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Article
Richnow, H. H. , Seifert, R. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kästner, M. , Mahro, B. and Michaelis, W.
(1994)
Metabolites of xenobiotica and mineral oil constituents linked to macromolecular organic matter in polluted environments ,
Organic Geochemistry,
22
,
pp. 671-681
.
hdl:10013/epic.16735
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Article
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Thiel, V. , Jenisch, A. , Galling, U. , Kempe, S. and Michaelis, W.
(1993)
Biomarker indications for microbial contribution to Recent and Late Jurassic carbonate deposits ,
Facies,
29
,
pp. 93-106
.
hdl:10013/epic.16734
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Article
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Richnow, H. H. , Fischer, U. , Trendel, J. M. and Michaelis, W.
(1993)
-(-)Verrucosan-2ß-ol from the phototrophic bacterium <i>Chloroflexus aurantiacus</i>: First report of a verrucosane-type diterpenoid from a prokaryote ,
Journal of General Microbiology,
139
,
pp. 2757-2761
.
hdl:10013/epic.16733
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Inbook
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Inbook
Lamy, F. ORCID: https://orcid.org/0000-0001-5952-1765, Prange, M. , Arz, H. W. , Varma, V. , Kaiser, J. , Kilian, R. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Benthien, A. ORCID: https://orcid.org/0000-0002-9159-3109 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2015)
The Southern Westerlies During the Holocene: Paleoenvironmental Reconstructions from Chilean Lake, Fjord, and Ocean Margin Sediments Combined with Climate Modeling / Schulz, M. and Paul, A. (editors) ,
In: Integrated Analysis of Interglacial Climate Dynamics (INTERDYNAMIC),
Integrated Analysis of Interglacial Climate Dynamics (INTERDYNAMIC),
Springer International Publishing
.
doi:https://doi.org/10.1007/978-3-319-00693-2_13
, hdl:10013/epic.46096
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Inbook
Richnow, H. H. , Eschenbach, A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kästner, M. , Mahro, B. , Seifert, R. and Michaelis, W.
(1996)
Bildungsmechanismen von Bound Residues bei der biologischen Behandlung kontaminierter Böden ,
In: Cuno, M. (Hrsg.) Biologische und chemische Behandlung von PAK-haltigen Böden und Abwässern, Schriftenreihe Biologische Abwasserreinigung
.
hdl:10013/epic.16739
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Inbook
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Hauke, V. , Richnow, H. H. and Michaelis, W.
(1995)
Alkanoic subunits in sulfur-rich geomacromolecules: Information from stepwise chemical degradation and compound specific isotopic analysis ,
In: Vairavamurthy, M. (ed.) Geochemical Transformations of Sedimentary Sulfur. ACS Symposium Series,
ISBN: 0-8412-3328-4
.
hdl:10013/epic.16737
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Inbook
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Richnow, H. H. , Seifert, R. and Michaelis, W.
(1995)
<i>n</i>-Alkanoic compounds in sulphur-rich macromolecular substances: A detailed investigation of sulphur incorporation and cross-linking ,
In: Snape, C. (ed.): Composition, Geochemistry and Conversion of Oil Shales. NATO ASI Series C: Mathematical and Physical Sciences,
ISBN: 0-7923-3343-8
.
hdl:10013/epic.16736
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Thesis
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Thesis
-PhD
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966
(1997)
Biogeochemie löslicher und makromolekular gebundener organischer Verbindungen in Sedimenten, Erdölen und kontaminierten Böden ,
PhD thesis,
Universität Hamburg.
hdl:10013/epic.16772
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Thesis
-Diplom
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966
(1992)
Biogeochemie rezenter Mikrobialithe ,
Diplom thesis,
Universität Hamburg.
hdl:10013/epic.16771
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Conference
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Conference
-Poster
Vorrath, M. E. ORCID: https://orcid.org/0000-0001-7208-1186, Müller, J. ORCID: https://orcid.org/0000-0003-0724-4131, Esper, O. ORCID: https://orcid.org/0000-0002-4342-3471, Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Haas, C. ORCID: https://orcid.org/0000-0002-7674-3500, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Lamy, F. ORCID: https://orcid.org/0000-0001-5952-1765
(2018)
Evaluating the sea ice proxy IPSO25 at the Western Antarctic Peninsula ,
POLAR 2018,
Davos, Swiss,
18 June 2018 - 23 June 2018
.
hdl:10013/epic.9d7fefe6-d289-4791-a95c-9cee085d3621
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Conference
-Talk
Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Winterfeld, M. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767, Kattein, L. and Pittauer, D. ORCID: https://orcid.org/0000-0002-3643-333X
(2018)
No evidence for 20th century acceleration in mobilization of fossil carbon from thawing permafrost in the Lena River catchment ,
Radiocarbon 2018,
Trondheim, Norway,
17 June 2018 - 22 June 2018
.
hdl:10013/epic.a9af56c1-db8a-4df1-9b2b-57fe05587a72
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Conference
-Poster
Gentz, T. ORCID: https://orcid.org/0000-0001-6739-5359, Bonk, E. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2018)
First year of routine measurements at the AWI MICADAS 14C dating facility. ,
23rd International Radiocarbon Conference,
NTNU,
17 June 2018 - 22 June 2018
.
hdl:10013/epic.7f4cce6f-11db-4266-9921-aa5e14b3efef
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Conference
-Talk
Gentz, T. ORCID: https://orcid.org/0000-0001-6739-5359, Bonk, E. , Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2018)
Reasons for downtimes of the AWI-MICADAS. ,
23rd International Radiocarbon Conference,
NTNU,
17 June 2018 - 22 June 2018
.
hdl:10013/epic.3501d754-30c5-4ea3-8166-a891994a4eeb
|
|
|
Conference
-Talk
Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767, Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Riedel, T. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Fritz, M. ORCID: https://orcid.org/0000-0003-4591-7325 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2018)
Assessing permafrost erosion in the Canadian Beaufort Sea, Herschel Island - A biomarker and radiocarbon approach ,
Gordon Research Conference Organic Geochemistry,
Holderness, NH, USA,
28 June 2018 - 3 August 2018
.
hdl:10013/epic.772d6631-bc16-4348-89e9-fd9de4a63f48
|
|
|
Conference
-Poster
Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767, Gentz, T. ORCID: https://orcid.org/0000-0001-6739-5359, Kattein, L. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2018)
Compound specific radiocarbon analysis at the AWI-MICADAS facility ,
Radiocarbon 2018,
Trondheim, Norway,
17 June 2018 - 22 June 2018
.
hdl:10013/epic.8c0ba842-5f5e-451c-b09e-d4e723586174
|
|
|
Conference
-Talk
Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Winterfeld, M. , Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Köhler, P. ORCID: https://orcid.org/0000-0003-0904-8484, Dummann, W. , Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767, Lembke-Jene, L. ORCID: https://orcid.org/0000-0002-6873-8533, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, McIntyre, C. , Wacker, L. , Haghipour, N. , Gersonde, R. and Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049
(2018)
Mobilization of old terrestrial carbon caused by permafrost thawing, sea-level rise and ice-sheet melting during the last deglaciation ,
EGU General Assembly 2018,
Vienna, Austria,
8 April 2018 - 13 April 2018
.
hdl:10013/epic.4bd16db3-994e-4b37-8bfd-838adad294eb
|
|
|
Conference
-Poster
Gentz, T. ORCID: https://orcid.org/0000-0001-6739-5359, Bonk, E. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Grotheer, H. ORCID: https://orcid.org/0000-0003-0207-3767, Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2017)
Establishment of routine sample preparation protocols at the newly installed MICADAS 14C dating facility at AWI ,
AMS 14 Conference,
Ottawa,
14 August 2017 - 18 August 2017
.
hdl:10013/epic.51670
|
|
|
Conference
-Poster
Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Sun, S. , Winterfeld, M. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Gentz, T. ORCID: https://orcid.org/0000-0001-6739-5359 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2017)
14C blank assessment and correction of small-scale compound-specific radiocarbon analysis on lipid biomarkers and lignin phenols ,
AMS14 Conference,
Ottawa, Canada,
14 August 2017 - 18 August 2017
.
hdl:10013/epic.51672
|
|
|
Conference
-Poster
Winterfeld, M. , Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Dummann, W. , Köhler, P. ORCID: https://orcid.org/0000-0003-0904-8484, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Lembke-Jene, L. ORCID: https://orcid.org/0000-0002-6873-8533, Wacker, L. , Mc Intyre, C. , Haghipour, N. , Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049, Gersonde, R. and Kokfelt, U.
(2017)
Mobilization of old terrestrial carbon in the North Pacific realm caused by permafrost thawing, sea-level rise and ice-sheet melting during the last deglaciation ,
International Carbon Dioxide Conference,
Interlaken, Switzerland,
21 August 2017 - 25 August 2017
.
hdl:10013/epic.51816
|
|
|
Conference
-Talk
Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Winterfeld, M. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Bodenstab, L. N. , Morgenstern, A. ORCID: https://orcid.org/0000-0002-6466-7571, Eulenburg, A. , Heim, B. ORCID: https://orcid.org/0000-0003-2614-9391, Koch, B. ORCID: https://orcid.org/0000-0002-8453-731X, Schefuß, E. , Moerth, C. M. and Rethemeyer, J.
(2016)
Seasonal changes in particulate and dissolved organic matter composition and quality in the Lena River Delta ,
AGU Fall Meeting,
San Francisco,
11 December 2016 - 16 December 2016
.
hdl:10013/epic.49404
|
|
|
Conference
-Talk
Winterfeld, M. , Trojahn, S. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Pittauer, D. , Zubrzycki, S. , Han, P. , Rethemeyer, J. and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2016)
Sources of particulate organic matter discharged by the Lena River using lignin phenols ,
AGU Fall meeting,
San Francisco,
11 December 2016 - 16 December 2016
.
hdl:10013/epic.49403
|
|
|
Conference
-Talk
Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Winterfeld, M. , Bodenstab, L. N. , Mörth, C. M. , Koch, B. ORCID: https://orcid.org/0000-0002-8453-731X, Heim, B. ORCID: https://orcid.org/0000-0003-2614-9391, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Prokushkin, A. and Rethemeyer, J.
(2016)
Arctic river organic carbon export through the ice-free season: isotopic and compositional analyses of DOM and POM collected in the Lena Delta between May and August 2014 ,
International Conference on Permafrost,
Potsdam,
20 June 2016 - 24 June 2016
.
hdl:10013/epic.48234
|
|
|
Conference
-Talk
Winterfeld, M. , Dummann, W. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Lembke-Jene, L. ORCID: https://orcid.org/0000-0002-6873-8533, Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, McIntyre, C. , Wacker, L. , Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2016)
Mobilization of old carbon during deglacial permafrost retreat in East Asia ,
XI. International Conference on Permafrost (ICOP),
Potsdam, Germany,
20 June 2016 - 24 June 2016
.
hdl:10013/epic.50592
|
|
|
Conference
-Talk
Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X, Dummann, W. , Winterfeld, M. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Lembke-Jene, L. ORCID: https://orcid.org/0000-0002-6873-8533 and Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049
(2015)
Release of pre-aged terrestrial organic matter from the Amur watershed during deglacial permafrost thaw revealed by compound-specific 14C analysis ,
Goldschmidt Conference,
Prague,
16 August 2015 - 21 August 2015
.
hdl:10013/epic.46672
|
|
|
Conference
-Poster
Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Max, L. , Schefuß, E. , Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2015)
Deglacial variations in provenance of terrigenous organic matter and temperature in the Northwest Pacific/western Bering Sea realm inferred from biomarkers ,
PAST Gateways Conference 2015,
Potsdam, Germany,
18 May 2015 - 22 May 2015
.
hdl:10013/epic.48684
|
|
|
Conference
-Talk
Winterfeld, M. , Goñi, M. , Just, J. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Sun, S. , Han, P. and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2015)
Sources and age of terrigenous organic matter exported from the Lena River watershed, NE Siberia ,
Goldschmidt Conference,
Prague,
16 August 2015 - 21 August 2015
.
hdl:10013/epic.46764
|
|
|
Conference
-Poster
Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Max, L. , Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2015)
TEXL86 provides new insights into sea surface temperature evolution in the northwest Pacific and the Bering Sea during Heinrich Stadial 1 ,
International Meeting on Organic Geochemistry (IMOG),
Prague, Czech Republic,
13 September 2015 - 18 September 2015
.
hdl:10013/epic.48685
|
|
|
Conference
-Poster
Carreira, R. S. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2015)
Tetraether lipids and TEX86-based temperature estimates: a case study on core-top sediments from two cross-shelf transects on the south-eastern Brazilian continental margin ,
International Meeting on Organic Geochemistry,
Prague,
15 September 2015 - 18 September 2015
.
hdl:10013/epic.46724
|
|
|
Conference
-Talk
Winterfeld, M. , Goñi, M. , Just, J. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Han, P. and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2014)
Characterization of terrestrial organic matter transported through the Lena River delta (NE Siberia) to its adjacent nearshore zone using lignin phenols, d13C, and ∆14C ,
American Geophysical Union Fall Meeting,
San Francisco, CA, USA,
15 December 2014 - 19 December 2014
.
hdl:10013/epic.45662
|
|
|
Conference
-Poster
Meyer, V. ORCID: https://orcid.org/0000-0002-4958-5367, Tiedemann, R. ORCID: https://orcid.org/0000-0001-7211-8049, Max, L. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Schefuß, E. and Mollenhauer, G. ORCID: https://orcid.org/0000-0001-5138-564X
(2014)
Deglacial to Holocene biomarker records of terrigenous input and sea surface temperature in the NW Pacific and the western Bering Sea ,
Gordon Research Conference on Organic Geochemistry,
New Hampshire, USA,
28 July 2014 - 1 August 2014
.
hdl:10013/epic.48683
|
|
|
Conference
-Talk
Naafs, B. D. A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Haug, G. H.
(2011)
Evidence for surface water warming in the IRD-belt during Heinrich Events ,
Interim Colloquium in Salamanca,
Salamanca, Spain,
September 2011 - unspecified
.
hdl:10013/epic.39044
|
|
|
Conference
-Talk
Naafs, B. D. A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Zhang, S. and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2011)
Tracing the source of IRD in the Heinrich Layers of the North Atlantic ,
Goldschmidt conference 2011,
Prague, Czech Republic,
August 2011 - August 2011
.
hdl:10013/epic.39045
|
|
|
Conference
-Poster
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Sinninghe Damsté, J. S.
(2008)
The Biomarker Inventory, Trace, and Source of Heinrich Events and Heinrich-type Layers (MIS 8-16) in the North Atlantic. ,
IODP and ICDP Colloquium, Hannover/Germany, March 12-14
.
hdl:10013/epic.32099
|
|
|
Conference
-Talk
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Sinninghe Damsté, J. S.
(2008)
The Biomarker Inventory, Trace, and Source of North Atlantic Heinrich Events. ,
SCAR/IASC IPY Open Science Conference "Polar Research Arctic and Antarctic Perspectives in the International Polar Year": Abstract Volume 145-146, Saint Petersburg/Russia, July 08-11
.
hdl:10013/epic.32100
|
|
|
Conference
-Invited talk
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Sinninghe Damsté, J. S. and Zhang, S.
(2008)
The biomarker inventory, trace, and source of North Atlantic iceberg invasions during the past 700.000 years. ,
LECO Advanced International User Practise Workshop, Mönchengladbach/Germany, October 28-29
.
hdl:10013/epic.32101
|
|
|
Conference
-Poster
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Sinninghe Damsté, J. S.
(2007)
The Biomarker Inventory, Trace, and Source of Heinrich Events and Heinrich-type Layers (MIS 8-16) in the North Atlantic ,
Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract PP41C-0689.
.
hdl:10013/epic.30021
|
|
|
Conference
-Poster
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2007)
The Biomarker Trace of Heinrich Events (IODP Exp. 303/306) ,
IODP/ODP and ICDP Colloquium, Potsdam/Germany, March 19-21
.
hdl:10013/epic.26601
|
|
|
Conference
-Invited talk
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2007)
The biomarker inventory, trace and source rock implications from Heinrich events (IODP Expedition 303/306) ,
Expeditions 303 & 306 2nd Post Expedition Meeting, May 14-17, Kona, Hawaii.
.
hdl:10013/epic.32098
|
|
|
Conference
-Poster
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2006)
Biomarker Compositions as Source Indicators of Heinrich Layers in the Northern North Atlantic (IODP Exp. 303/306, Site 1305) ,
Eos Trans. AGU, 87(52), Fall Meet. Suppl., Abstract PP23D-1791.
.
hdl:10013/epic.32597
|
|
|
Conference
-Talk
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Grützner, J. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kanamatsu, T. and Alvarez-Zarikian, C.
(2006)
IODP Expedition 306: Quaternary and Late Neogene North Atlantic Paleoceanography ,
IODP/ODP and ICDP Colloquium, Greifswald/Germany, March 27-29
.
hdl:10013/epic.24638
|
|
|
Conference
-Invited talk
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Gruetzner, J. ORCID: https://orcid.org/0000-0001-5445-2393, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kanamatsu, T. and Alvarez-Zarikian, C.
(2006)
IODP Expedition 306: Quaternary and Late Neogene North Atlantic Paleoceanography ,
IODP-ICDP Kolloquium, 27-29 March, Greifswald, Germany.
.
hdl:10013/epic.25023
|
|
|
Conference
-Poster
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Channell, J. E. T. , Kanamatsu, T. , Sato, T. , Malone, M. and Zarikian, C.
(2005)
Late Neogene-Quaternary variability in North Atlantic paleoceanography: Preliminary results from IODP Expeditions 303 and 306 ,
2nd Alfred Wegener Symposium, 30 Oct - 02 Nov, Bremerhaven, Germany, Terra Nostra
.
hdl:10013/epic.24202
|
|
|
Conference
-Poster
Benthien, A. ORCID: https://orcid.org/0000-0002-9159-3109, Riebesell, U. , Engel, A. , Zondervan, I. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Delille, B. , Harlay, J. and Jacquet, S.
(2004)
Alkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production. ,
8th International Conference on Paleoceanography (ICP VIII), 5-10 Sept., Biarritz, France
.
hdl:10013/epic.22269
|
|
|
Conference
-Poster
Kierdorf, C. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2004)
Characterisation of the organic matter in surface sediments from the East Greenland continental margin ,
Bjerknes Centenary 2004, 01-03 September 2004, Bergen, Norway.
.
hdl:10013/epic.21757
|
|
|
Conference
-Talk
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Fahl, K. ORCID: https://orcid.org/0000-0001-9317-4656 and Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966
(2004)
Organic-carbon sources and variability in sediments from the southern Kara Sea (Arctic Ocean): organic-geochemical bulk parameter vs. biomarker records ,
EUG, 1st General Assembly, Nice, FranceApril 2004.
.
hdl:10013/epic.22091
|
|
|
Conference
-Poster
Weller, P. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564 and Kuhn, G. ORCID: https://orcid.org/0000-0001-6069-7485
(2004)
Paleoproductivity and paleotemperature variability in the mid-Pleistocene southern South Atlantic: Implications from biomarker records (ODP-Site 1089) ,
European Geosciences Union, 1st General Assembly, 25-30 April, Nice, France.
.
hdl:10013/epic.21422
|
|
|
Conference
-Poster
Weller, P. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2004)
Paleoproductivity, paleotemperature and terrigenous input in the mid-Pleistocene southern South Atlantic: Implications from biomarker records (ODP-Site 1089) ,
Euroforum for scientific drilling in Bremen (IODP/ODP/ICDP.-19.03.2004).
.
hdl:10013/epic.20757
|
|
|
Conference
-Poster
Benthien, A. ORCID: https://orcid.org/0000-0002-9159-3109, Zondervan, I. , Riebesell, U. , Engel, A. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Delille, B. , Harlay, J. and Jacquet, S.
(2003)
Alkenone carbon isotopes during a bloom of Emiliania huxleyi: Effects of CO2 concentration and production. ,
EGS-AGU-EUG Joint Assembly, 7-11 April, Nice, France
.
hdl:10013/epic.22280
|
|
|
Conference
-Poster
Kierdorf, C. , Birgel, D. , Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966 and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(2003)
Organic carbon and biomarkers in surface sediments: a comparison between the Fram Strait / Yermak Plateau and the East Greenland continental margin ,
Sediment 2003, 10-13 Jun., Wilhelmshaven, Germany.
.
hdl:10013/epic.19922
|
|
|
Conference
-Poster
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Fahl, K. ORCID: https://orcid.org/0000-0001-9317-4656, Michaelis, W. and Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564
(1998)
Carbon isotopic and molecular characterization of sedimentary organic matter in the Late Quaternary Arctic Ocean ,
Eos, Transactions, American Geophysical Union,79,F501.
.
hdl:10013/epic.17377
|
|
|
Conference
-Invited talk
Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Hauke, V. , Steiner, U. and Michaelis, W.
(1996)
Molecular characterization of organic matter in methane producing areas of the Baltic Sea ,
In: Giere, O. & Fischer, U. (eds.): Abstracts and Program of the Workshop on Processes and Structures in Marine Methane and Sulfide Biotopes
.
hdl:10013/epic.16738
|
|
Field Report
|
Field Report
Stein, R. ORCID: https://orcid.org/0000-0002-4453-9564, Drachev, S. , Fahl, K. ORCID: https://orcid.org/0000-0001-9317-4656, Hefter, J. ORCID: https://orcid.org/0000-0002-5823-1966, Kassens, H. , Kokina, N. , Matthießen, J. ORCID: https://orcid.org/0000-0002-6952-2494, Müller, C. , Musatov, E. , Mutterlose, J. , Nörgaard-Petersen, N. , Polozek, K. , Shevchenko, V. and Usbeck, R.
(1999)
Marine Geological Investigations. - In Jokat, W. (ed.), ARCTIC ´98: The Expedition ARK-XIV/1a of RV "Polarstern" in 1998. ,
[Field Report]
hdl:10013/epic.19946
|
|