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Number of items: 21.

Conference -Poster
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Ihle, K. , Last, K. S. , McKee, D. , Hobbs, L. and Tessmar-Raible, K. (2025)
Marine clocks - from individual functionality to ecosystem complexity
[thumbnail of EBRS2025_poster_SHaefker.pdf]
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Article
Wulf, P. O. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Hofmann, K. and Tessmar-Raible, K. ORCID: https://orcid.org/0000-0002-8038-1741 (2025)
Guiding Light: Mechanisms and Adjustments of Environmental Light Interpretation with Insights from Platynereis dumerilii and Other Selected Examples ,
Zoological Science, 42 (1) .
doi:10.2108/zs240099 , hdl:10013/epic.2a228b33-47d9-4ba6-a5c7-57b833acf728
[thumbnail of Wulf et al 2025.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Holcik, L. , Mat, A. M. , Ćorić, A. , Vadiwala, K. , Beets, I. , Stockinger, A. W. , Atria, C. E. , Hammer, S. , Revilla-i-Domingo, R. , Schoofs, L. , Raible, F. and Tessmar-Raible, K. (2024)
Molecular circadian rhythms are robust in marine annelids lacking rhythmic behavior / Merrow, M. (editor) ,
PLOS Biology, 22 (4), e3002572- .
doi:10.1371/journal.pbio.3002572 , hdl:10013/epic.2bdf5e52-2a78-4ace-8d3f-379ed79228b2
[thumbnail of Molecular circadian rhythms are robust in marine annelids lacking rhythmic behavior.pdf]
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Conference -Poster
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656 and Tessmar-Raible, K. ORCID: https://orcid.org/0000-0002-8038-1741 (2023)
Models for Marine Integrative Chronobiology
[thumbnail of Models for Marine Integrative Chronobiology_SHaefker.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Andreatta, G. , Manzotti, A. , Falciatore, A. , Raible, F. and Tessmar-Raible, K. ORCID: https://orcid.org/0000-0002-8038-1741 (2023)
Rhythms and Clocks in Marine Organisms ,
Annual Review of Marine Science, 15 (1), pp. 509-538 .
doi:10.1146/annurev-marine-030422-113038 , hdl:10013/epic.1464057c-4211-43ea-9d9c-3790c67ef111
[thumbnail of annurev-marine-030422-113038.pdf]
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Article
Poehn, B. , Krishnan, S. , Zurl, M. , Coric, A. , Rokvic, D. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Jaenicke, E. , Arboleda, E. , Orel, L. , Raible, F. , Wolf, E. and Tessmar-Raible, K. ORCID: https://orcid.org/0000-0002-8038-1741 (2022)
A Cryptochrome adopts distinct moon- and sunlight states and functions as sun- versus moonlight interpreter in monthly oscillator entrainment ,
Nature Communications, 13 (1), 5220- .
doi:10.1038/s41467-022-32562-z , hdl:10013/epic.b81e1a59-71ba-43f7-b1c8-50394934ce65
[thumbnail of A Cryptochrome adopts distinct moon- and sunlight states and functions as sun- versus moonlight interpreter in monthly oscil.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Connan-McGinty, S. , Hobbs, L. , McKee, D. , Cohen, J. H. and Last, K. S. (2022)
Animal behavior is central in shaping the realized diel light niche / Holland, R. and Karniski, C. (editors) ,
Communications Biology, 5 (1), 562- .
doi:10.1038/s42003-022-03472-z , hdl:10013/epic.b81399b0-1fe3-4a5f-8e6d-b11c2cdbc991
[thumbnail of Animal behavior is central in shaping the realized diel light niche.pdf]
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Article
Veedin Rajan, V. B. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Arboleda, E. , Poehn, B. , Gossenreiter, T. , Gerrard, E. , Hofbauer, M. , Mühlestein, C. , Bileck, A. , Gerner, C. , Ribera d’Alcala, M. , Buia, M. C. , Hartl, M. , Lucas, R. J. and Tessmar-Raible, K. (2021)
Seasonal variation in UVA light drives hormonal and behavioural changes in a marine annelid via a ciliary opsin ,
Nature Ecology & Evolution, 5 (2), pp. 204-218 .
doi:10.1038/s41559-020-01356-1 , hdl:10013/epic.c5154801-948b-4f2c-93c5-a0171d1478a2
[thumbnail of Seasonal variation in UVA light drives hormonal and behavioural changes in a marine annelid via a ciliary opsin.pdf]
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Inbook
Last, K. S. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Hendrick, V. J. , Meyer, B. , Tran, D. and Piccolin, F. (2020)
Biological Clocks and Rhythms in Polar Organisms ,
Springer International Publishing, ISBN: 9783030332075 .
doi:10.1007/978-3-030-33208-2_8 , hdl:10013/epic.92932dd8-cbcb-4831-84bc-585be1b6bbe6
[thumbnail of 2020, Lastetal2020.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656 and Tessmar-Raible, K. (2020)
Rhythms of behavior: are the times changin’? / Brecht, M. and Mooney, R. (editors) ,
Current Opinion in Neurobiology, 60 , pp. 55-66 .
doi:10.1016/j.conb.2019.10.005 , hdl:10013/epic.37ddd2b9-7595-4d1d-9abd-751ead5828bb
[thumbnail of 1-s2.0-S0959438819301126-main.pdf]
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Inbook
Last, K. S. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Hendrick, V. , Meyer, B. ORCID: https://orcid.org/0000-0001-6804-9896, Tran, D. and Piccolin, F. (2020)
Biological Clocks and!Rhythms in Polar Organisms / Berge, J. , Johnson, G. and Cohen, J. H. (editors) ,
In: Polar Night Marine Ecology_ Life and Light in the Dead of Night, Advances in Polar Ecology, Switzerland, Springer, ISBN: 978-3-030-33208-2 .
doi:10.1007/978-3-030-33208-2 , hdl:10013/epic.24746dfc-0de5-4634-b52e-ccc3bb543313
[thumbnail of Lastetal2020.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Teschke, M. , Hüppe, L. and Meyer, B. ORCID: https://orcid.org/0000-0001-6804-9896 (2018)
Calanus finmarchicus diel and seasonal rhythmicity in relation to endogenous timing under extreme polar photoperiods ,
Marine Ecology-Progress Series, 603 , pp. 79-92 .
doi:10.3354/meps12696 , hdl:10013/epic.ed454eb4-f362-4af5-ae98-1ef211db644a
[thumbnail of Haefker_et_al_2018b.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Teschke, M. , Last, K. S. , Pond, D. W. , Hüppe, L. and Meyer, B. ORCID: https://orcid.org/0000-0001-6804-9896 (2018)
Calanus finmarchicus seasonal cycle and diapause in relation to gene expression, physiology, and endogenous clocks ,
Limnology and Oceanography .
doi:10.1002/lno.11011 , hdl:10013/epic.39038194-fbff-4c9e-b886-c09dd4074062
[thumbnail of Haefker_et_al_2018a.pdf]
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Thesis -PhD
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656 (2018)
The molecular basis of diel and seasonal rhythmicity in the copepod Calanus finmarchicus ,
PhD thesis, Carl von Ossietzky Universität Oldenburg.
hdl:10013/epic.7b55a1b0-16ff-49ec-9e19-73f4061f598c
[thumbnail of Haefker_2018_PhD.pdf]
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Article
Zittier, Z. M. C. , Bock, C. ORCID: https://orcid.org/0000-0003-0052-3090, Sukhotin, A. A. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656 and Pörtner, H. O. ORCID: https://orcid.org/0000-0001-6535-6575 (2018)
Impact of ocean acidification on thermal tolerance and acid–base regulation of Mytilus edulis from the White Sea ,
Polar Biology .
doi:10.1007/s00300-018-2362-x , hdl:10013/epic.c4e95656-fc37-4c85-97d4-bef1d6318f42
[thumbnail of ZZittier_WS_Mytilus_PolBiol18.pdf]
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Article
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Meyer, B. ORCID: https://orcid.org/0000-0001-6804-9896, Last, K. S. , Pond, D. W. , Hüppe, L. and Teschke, M. (2017)
Circadian Clock Involvement in Zooplankton Diel Vertical Migration ,
Current Biology, 27 (14), pp. 2194-2201 .
doi:10.1016/j.cub.2017.06.025 , hdl:10013/epic.51493
[thumbnail of Haefker_et_al_2017.pdf]
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Conference -Talk
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Schoenle, A. , Meyer, B. ORCID: https://orcid.org/0000-0001-6804-9896 and Teschke, M. (2016)
First records of clock gene activity in Calanus finmarchicus – Expression patters during overwintering in a high Arctic fjord ,
ICES/PICES 6th Zooplankton Production Symposium, Bergen, Norway, 9 May 2016 - 13 May 2016 .
hdl:10013/epic.47974
[thumbnail of SHaefker_Bergen_2016.pdf]
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Conference -Poster
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Meyer, B. ORCID: https://orcid.org/0000-0001-6804-9896 and Teschke, M. (2016)
Clock genes in a north Atlantic key zooplankter - Expression during overwintering in a high Arctic fjord ,
Time and Light: Novel Concepts and Models in Sensory and Chronobiology, Vienna, Austria, 8 May 2016 - 10 May 2016 .
hdl:10013/epic.47975
[thumbnail of SHaefker_Vienna_2016.pdf]
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Article
Seibel, B. A. , Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656, Trübenbach, K. , Zhang, J. , Tessier, S. N. , Pörtner, H. O. ORCID: https://orcid.org/0000-0001-6535-6575, Rosa, R. and Storey, K. B. (2014)
Metabolic suppression during protracted exposure to hypoxia in the jumbo squid, Dosidicus gigas, living in an oxygen minimum zone ,
Journal of Experimental Biology, 217 (14), pp. 2555-2568 .
doi:10.1242/jeb.100487 , hdl:10013/epic.43975

Thesis -Master
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656 (2012)
Effects of hypoxia and hypercapnia on blood and tissue physiology of the common cuttlefish Sepia officinalis
Master thesis, Universtität Bremen.
hdl:10013/epic.40957
[thumbnail of MSc_SHaefker.pdf]
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Thesis -Bachelor
Häfker, N. S. ORCID: https://orcid.org/0000-0002-4883-3656 (2010)
Effects of specific traits of predator (Carcinus maenas) and prey (Littorina littorea) on the efficacy of risk signals
Bachelor thesis, Universität Bremen.
hdl:10013/epic.43146
[thumbnail of BSc_SHaefker.pdf]
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This list was generated on Wed Oct 29 04:29:53 2025 UTC.