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  • 2015-2019  (15)
  • 2000-2004  (324,094)
  • 2003  (324,094)
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Language
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Year
  • 1
    Monograph available for loan
    Monograph available for loan
    Atmospheric dust and aerosol study : second status report (1977-)
    Garmisch-Partenkirchen : Institut für atmosphärische Umweltforschung der Fraunhofer- Gesellschaft
    Details Availability
    Call number: MOP 44829 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 25 S. , graph. Darst.
    Language: English
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Zuwendungsrecht Zuwendungspraxis : Textsammlung, Kommentar und Rechtsprechungssammlung zum Recht der Zuwendungen und Subventionen der öffentlichen Hand mit Verfahrenshinweisen für die Behörden und Zuwendungsempfänger (1982-)
    Heidelberg : v. Decker
    Details Availability
    Call number: IASS 15.89494
    Type of Medium: Monograph available for loan
    Pages: Losebl.-Ausg.
    Edition: Stand: Oktober 2010
    ISBN: 9783768501828
    URL: Inhaltsverzeichnis
    Language: German
    Branch Library: RIFS Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Referativnyj žurnal : geologija, geografija (1982-)
    Moskva
    Details Availability
    Call number: MOP 19538/1d-6d
    Type of Medium: Monograph available for loan
    Pages: 111 S.
    ISSN: 0486-2287
    Language: Russian
    Note: In kyrill. Schr.
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 4
    Monograph available for loan
    Monograph available for loan
    Quake : part two, the aftermath (1900-)
    [Edgecumbe, N.Z.] : A. Muller
    Details Availability
    Call number: M 15.89146
    Description / Table of Contents: An account of the results of the 2 March 1987 earthquake in the eastern Bay of Plenty and the aftermath's effects on the people and places on the Rangitaiki Plains
    Type of Medium: Monograph available for loan
    Pages: 223 S., , Ill.
    Language: English
    Branch Library: GFZ Library
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  • 5
    Unknown
    Proceedings of the Tenth World Conference on Earthquake Engineering : 19-24 July 1992, Madrid, Spain (1992-)
    Rotterdam [u.a.] : Balkema
    Details Availability
    Call number: M 92.0634
    ISBN: 9054100605
    Language: English
    Branch Library: GFZ Library
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  • 6
    Monograph available for loan
    Monograph available for loan
    Hans Stille (1876-1966) geologist (1978-)
    Stuttgart : Schweizerbart Science Publishers ; Volume 1, number 1 (1978)-
    Details Availability
    Call number: M 18.91571
    Type of Medium: Monograph available for loan
    Pages: 134 Seiten
    ISSN: 2363-7196
    Series Statement: Global tectonics and metallogeny : special issue Vol. 10/2-4
    Classification:
    Tectonics
    Parallel Title: Erscheint auch als Global tectonics and metallogeny
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 7
    Series available for loan
    Series available for loan
    Das Klima von Potsdam : Ergebnisse 60jähriger Beobachtungen am Meteorologischen Observatorium 1893-1952; Tabellenanhang (1963-)
    Berlin : Reimer
    Associated volumes
    Details Availability
    Call number: AWI A3-20-93434-2
    In: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin, Band XXXII, Heft 2
    Type of Medium: Series available for loan
    Pages: 218 Seiten , Illustrationen
    Series Statement: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin 32,2
    Language: German
    Note: Zugleich: Dissertation, Freie Unversität Berlin, [ca. 1963] , INHALTSVERZEICHNIS PROBLEMSTELLUNG UND ZIELSETZUNG 1. BEMERKUNGEN ZUM BEOBACHTUNGSGELÄNDE UND ZUM BEOBACHTUNGSMATERIAL 1.1 Das Beobachtungsgelände 1.2 Das Beobachtungsmaterial 2. HOMOGENITÄTSBETRACHTUNGEN 2.1 Temperatur 2.2 Niederschlag 2.3 Wind 2.4 Sonnenschein und Bewölkung 3. TEMPERATURVERHÄLTNISSE 3.1 Monats- und Jahreswerte 3.2 Tageswerte 3.3 Pentadenwerte 3.4 Häufigkeitsbetrachtungen 3.5 Interdiurne Veränderlichkeit 3.6 Der tägliche Gang 3.7 Vorkommen bestimmter Schwellenwerte 3.71 Frost- und Eistage 3.72 Sommer- und Tropentage 4. DER WASSERGEHALT DER LUFT 4.1 Monats- und Jahreswerte 4.2 Tageswerte 4.3 Häufigkeitsbetrachtungen 4.4 Interdiurne Veränderlichkeit 4.5 Der tägliche Gang 5. BEWÖLKUNGSVERHÄLTNISSE 5.1 Monats- und Jahreswerte 5.2 Tageswerte 5.3 Häufigkeitsbetrachtungen 5.4 Der tägliche Gang 5.5 Heitere und trübe Tage 5.6 Nebel 6. SONNENSCHEIN 6.1 Monats- und Jahreswerte 6.2 Tageswerte 6.3 Der tägliche Gang 7. NIEDERSCHLAGSVERHÄLTNISSE 7.1 Monats- und Jahreswerte 7.2 Niederschlagsbereitschaft 7.3 Tageswerte 7.4 Der tägliche Gang 7.5 Häufigkeitsbetrachtungen 7.6 Niederschlags- und Trockenperioden 7.7 Niederschlag und Wind· 7.8 Schneeverhältnisse 7.81 Schneefall und Schneedecke 7.82 Schneehöhe 7.9 Gewitter 8. WINDVERHÄLTNISSE 8.1 Windrichtung 8.2 Windgeschwindigkeit 8.21 Der jährliche Gang 8.22 Häufigkeitsbetrachtungen 8.23 Sturmtage und Windstillen 8.24 Der tägliche Gang 9.ZUSAMMENFASSUNG VERZEICHNIS DER TEXTTABELLEN VERZEICHNIS DER ABBILDUNGEN LITERATURVERZEICHNIS TABELLENANHANG
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  • 8
    Monograph available for loan
    Monograph available for loan
    Agraratlas über das Gebiet der Deutschen Demokratischen Republik : Bodenarten und Bodenartliche Ertragsbedingungen (1956-)
    Gotha : Haack
    Details Availability
    Call number: (DE-599)GBV03709842X
    Type of Medium: Monograph available for loan
    Language: German
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 9
    Monograph available for loan
    Monograph available for loan
    Osnovy učenija o počvennoj vlage : I.: Vodny svojstva počv i peredvizenie počvennoj vlagi (1965-)
    Leningrad : Gidrometeorolog. Izd.
    Details Availability
    Call number: MOP 33767
    Type of Medium: Monograph available for loan
    Pages: 663 S.
    Language: Russian
    Note: In kyrill. Schr., russ.
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 10
    Journal available for loan
    Journal available for loan
    FinanzArchiv : public finance analysis (1884-)
    Tübingen : Mohr Siebeck ; 1.1884 - 48.1931; N.F. 1.1932/33 - 10.1943/44(1945),3; 11.1948/49(1949) -
    Details
    Call number: ZS 22.95039
    Type of Medium: Journal available for loan
    Pages: Online-Ressource
    ISSN: 1614-0974 , 0015-2218 , 0015-2218
    URL: https://www.jstor.org/journal/finaarch
    URL: http://www.bibliothek.uni-regensburg.de/ezeit/?2143985
    URL: https://www.mohrsiebeck.com/zeitschrift/finanzarchiv-fa
    URL: https://www.jstor.org/journal/finaarch
    Language: German , English
    Note: N.F. entfällt ab 57.2000. - Volltext auch als Teil einer Datenbank verfügbar , Ersch. ab 2000 in engl. Sprache mit dt. Hauptsacht.
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    E-BOOK
  • 11
    Monograph available for loan
    Monograph available for loan
    Climatología aeronáutica de España (1948-)
    Madrid : Secc
    Details Availability
    Call number: PIK N 456-17-90913
    Type of Medium: Monograph available for loan
    Pages: 536 Seiten
    Series Statement: Ministerio de Transportes Turismo Y Comunicaciones : Publicación Serie A 114
    Parallel Title: 1,1=6; 2,1=13 von Publicaciones / D / Ministerio del Aire, Subsecretaria de Aviación Civil, Servicio Meteorológico Nacional
    Language: Spanish
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 12
    Series available for loan
    Series available for loan
    Das Klima von Potsdam : Ergebnisse 60jähriger Beobachtungen am Meteorologischen Observatorium 1893-1952; [Textband] (1963-)
    Berlin : Reimer
    Associated volumes
    Details Availability
    Call number: AWI A3-20-93434
    In: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin, Band XXXII, Heft 1
    Type of Medium: Series available for loan
    Pages: 121 Seiten , Illustrationen
    Series Statement: Meteorologische Abhandlungen / Institut für Meteorologie und Geophysik der Freien Universität Berlin 32,1
    Language: German
    Note: Zugleich: Dissertation, Freie Unversität Berlin, [ca. 1963] , INHALTSVERZEICHNIS PROBLEMSTELLUNG UND ZIELSETZUNG 1. BEMERKUNGEN ZUM BEOBACHTUNGSGELÄNDE UND ZUM BEOBACHTUNGSMATERIAL 1.1 Das Beobachtungsgelände 1.2 Das Beobachtungsmaterial 2. HOMOGENITÄTSBETRACHTUNGEN 2.1 Temperatur 2.2 Niederschlag 2.3 Wind 2.4 Sonnenschein und Bewölkung 3. TEMPERATURVERHÄLTNISSE 3.1 Monats- und Jahreswerte 3.2 Tageswerte 3.3 Pentadenwerte 3.4 Häufigkeitsbetrachtungen 3.5 Interdiurne Veränderlichkeit 3.6 Der tägliche Gang 3.7 Vorkommen bestimmter Schwellenwerte 3.71 Frost- und Eistage 3.72 Sommer- und Tropentage 4. DER WASSERGEHALT DER LUFT 4.1 Monats- und Jahreswerte 4.2 Tageswerte 4.3 Häufigkeitsbetrachtungen 4.4 Interdiurne Veränderlichkeit 4.5 Der tägliche Gang 5. BEWÖLKUNGSVERHÄLTNISSE 5.1 Monats- und Jahreswerte 5.2 Tageswerte 5.3 Häufigkeitsbetrachtungen 5.4 Der tägliche Gang 5.5 Heitere und trübe Tage 5.6 Nebel 6. SONNENSCHEIN 6.1 Monats- und Jahreswerte 6.2 Tageswerte 6.3 Der tägliche Gang 7. NIEDERSCHLAGSVERHÄLTNISSE 7.1 Monats- und Jahreswerte 7.2 Niederschlagsbereitschaft 7.3 Tageswerte 7.4 Der tägliche Gang 7.5 Häufigkeitsbetrachtungen 7.6 Niederschlags- und Trockenperioden 7.7 Niederschlag und Wind· 7.8 Schneeverhältnisse 7.81 Schneefall und Schneedecke 7.82 Schneehöhe 7.9 Gewitter 8. WINDVERHÄLTNISSE 8.1 Windrichtung 8.2 Windgeschwindigkeit 8.21 Der jährliche Gang 8.22 Häufigkeitsbetrachtungen 8.23 Sturmtage und Windstillen 8.24 Der tägliche Gang 9.ZUSAMMENFASSUNG VERZEICHNIS DER TEXTTABELLEN VERZEICHNIS DER ABBILDUNGEN LITERATURVERZEICHNIS TABELLENANHANG
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  • 13
    Electronic Resource
    Electronic Resource
    A measurement of τ polarization in Z^0 decays (1992-8977)
    Amsterdam : Elsevier
    Physics Letters B 294 (1992), S. 466-478 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(92)91549-O
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    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    Measurement of the average lifetime of b hadrons (1993-4325)
    Amsterdam : Elsevier
    Physics Letters B 317 (1993), S. 474-484 
    Details
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0370-2693(93)91027-K
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  • 15
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    Abhandlungen der Geologischen Bundesanstalt in Wien (1925-2022)
    Wien : [Verlag nicht ermittelbar] ; 22.1910/25(1925),3; 23.1914/31(1929/31),2-3; 24.1927,1-2; 25.1939,1; 26.1948,1; 27.1971-Band 76 (2022)
    Details Availability
    Call number: S 91.1179
    ISSN: 0375-5797 , 0378-0864
    Parallel Title: 35=2 von European Conodont Symposium (ZDB) Guidebook, abstracts / European Conodont Symposium
    Parallel Title: 41=2 von Workshop on Agglutinated Foraminifera (ZDB) Proceedings / Workshop on Agglutinated Foraminifera. Geologische Bundesanstalt
    Parallel Title: 39=3 von International Nannoplankton Association Proceedings of the ... International Nannoplankton Association conference
    Parallel Title: 60=11 von Deutsche Gesellschaft für Geowissenschaften. Fachsektion GeoTop Internationale Jahrestagung der Fachsektion GeoTop der Deutschen Gesellschaft für Geowissenschaften
    Former Title: Vorg. Geologische Reichsanstalt Abhandlungen der Kaiserlich-Königlichen Geologischen Reichsanstalt, Wien
    Subsequent Title: Fortgesetzt durch Abhandlungen
    Language: German
    Branch Library: GFZ Library
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  • 16
    Map available for loan
    Map available for loan
    Rust; 78. 1:50 000 (1993-2010)
    Associated volumes
    Details Availability
    Call number: K 95.0020 / R6
    In: Geologische Karte der Republik Österreich
    Type of Medium: Map available for loan
    Pages: 1 Kt. : mehrfarb. ; 54 x 82 cm, gefaltet 12 x 21 cm + Erl.-H. (192 S., 2010) im Umschlag
    ISBN: 9783853160558
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 17
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    UFZ-Bericht (1994-2006)
    Leipzig ; Nachgewiesen 1994 - 2006
    Details Availability
    Call number: SR 90.1139
    ISSN: 0948-9452
    Parallel Title: 1996,5=1; 1996,6=2; 1996,8=3; 1996,9=4; 1996,10=5; 1996,11=6; 1996,12=7; 1996,16=8; 1996,18=9; 1996,20=10; 1997,2=11; 1997,7=12; 1997,16=13; 1997,25=14; 1998,9=15; 1998,14=16; 1998,19=17; 1999,4=19; 1999,18=23; 2000,8=26; 2000,10=27; 2001,18=31; 2002,5=32; 2002,21=33; 2003,2=35; 2003,17=36 von ---〉 Stadtökologische Forschungen
    Parallel Title: 2005,1=1 von ---〉 Basic and applied dryland research
    Subsequent Title: Forts. ---〉 Helmholtz-Zentrum für Umweltforschung 〈Leipzig〉: UFZ-Bericht
    Branch Library: GFZ Library
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  • 18
    Series available for loan
    Series available for loan
    Das AWI / Alfred Wegener Institute for Polar and Marine Research in the Helmholtz-Gemeinschaft Deutscher Forschungszentren : in den Jahren ... : report (2002-2006)
    Bremerhaven : AWI ; 2000/01(2002) - 2004/05(2006)
    Details Availability
    Call number: ZSP-994
    Type of Medium: Series available for loan
    Pages: 21 x 21 cm
    ISSN: 1618-3703
    Former Title: Vorgänger: Zweijahresbericht / Stiftung Alfred-Wegener-Institut für Polar- und Meeresforschung
    Subsequent Title: Fortsetzung Zweijahresbericht ... / AWI, Alfred-Wegener-Institut für Polar- und Meeresforschung in der Helmholtz-Gemeinschaft
    Language: German , English
    Note: Erscheint alle 2 Jahre , Text in deutscher und englischer Sprache
    Location: AWI Reading room
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  • 19
    Series available for loan
    Series available for loan
    Geologica Romana; 3. Ser. vol. 37. (2003-2004)
    Associated volumes
    Details Availability
    Call number: S 91.0653(37)
    In: Geologica Romana
    Type of Medium: Series available for loan
    Pages: 236 S. + 4 Kt.-Beil.
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 20
    Non-book medium
    Non-book medium
    South Africa = Suid-Afrika [Elektronische Ressource] 1:250 000 (1996-2004)
    Associated volumes
    Details Availability
    Call number: NBM 09.0423
    In: South Africa = Suid-Afrika
    Type of Medium: Non-book medium
    Pages: 1 DVD (71 Blätter, Indexblätter : TIF-Bilder)
    Series Statement: South Africa = Suid-Afrika
    Location: Reading room
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  • 21
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    Phytoplankton community response to river diversions in the Caernarvon-Breton Sound area (Louisiana): Seasonal effects of nutrient enrichments (2003)
    In:  EPIC3ERF Meeting: Estuaries on the Edge - Convergence of Ocean, Land and Culture, 2003
    Details
    Publication Date: 2017-02-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 22
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    Phytoplankton community response to nutrient enrichment in an estuarine coastal region influenced by pulsed water diversions (Caernarvon, Louisiana) (2003)
    In:  EPIC3ASLO Meeting, Salt Lake City, Salt Lake City, Ut, USA, 2003
    Details
    Publication Date: 2017-02-07
    Repository Name: EPIC Alfred Wegener Institut
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  • 23
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    Benthic and pelagic nutrient cycling in a coastal Watershed influenced by river diversions (Caernarvon, Louisiana (2003)
    In:  EPIC3Estuarine Research Federation Meeting, Seattle, WA, USA, 2003
    Details
    Publication Date: 2017-02-07
    Repository Name: EPIC Alfred Wegener Institut
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  • 24
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    Seasonal and spatial variability of major organic contaminants in solution and suspension of the Pomeranian Bight (2003)
    International Council for the Exploration of the Sea
    In:  EPIC3Copenhagen, Danmark, International Council for the Exploration of the Sea, 334 p., ISBN: ISSN 1017–619 5
    Details
    Publication Date: 2017-01-30
    Description: Studies of hexachlorocyclohexane-isomers (HCHs) and selected triazine herbicides in solution and suspension were carried out in the Pomeranian Bight in 1995. The concentrations of HCHs and triazines were determined by gas-liquid chromatography (GC) or by GC in connection with quadrupole mass spectrometry(GC/MS). Particulate and dissolved material were separated by means of an in-situ filtration/extraction system. The seasonal variability and regional distribution of the various components were investigated in January, April, July and September 1995. Their distribution in the western Pomeranian Bight is described. The concentrations of individual hexachlorocyclohexane-isomers were in the range of 100–1 000 pg l–1 in solution and 20 to 60 pg l–1 in suspension. The levels of the triazines in solution showed pronounced differences between the individual components (atrazine (2–20 ng l–1), simazine (5–30 ng l–1), terbuthylazine (〈 5 ng l–1)), but they were one order of magnitude higher compared with the hexachlorocyclohexane-isomers. The concentration of triazines in suspension was low, often below the limit of detection (25 pg l–1).
    Repository Name: EPIC Alfred Wegener Institut
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  • 25
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    Vegetations- und siedlungsgeschichtliche Untersuchungen am Trentelmoor bei Peine (2003)
    Eberhard Grüger
    In:  EPIC3Göttingen, Eberhard Grüger
    Details
    Publication Date: 2015-08-24
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 26
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    Radiocarbon datings of sediment core Trentelmoor, Peine, Lower Saxony, Germany (2003)
    PANGAEA
    In:  EPIC3Bremerhaven, PANGAEA
    Details
    Publication Date: 2015-08-18
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 27
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    Basal melt at NorthGRIP modeled from borehole, ice-core and radio-echo sounder observations (2003)
    INT GLACIOL SOC
    In:  EPIC3Annals of Glaciology, INT GLACIOL SOC, 37, pp. 207-212, ISSN: 0260-3055
    Details
    Publication Date: 2017-12-11
    Description: From temperature measurements down through the 3001 m deep borehole at the North Greenland Icecore Project (NorthGRIP) drill site, it is now clear that the ice at the base, 3080 m below the surface, is at the pressure-melting point. This is supported by the measurements on the ice core where the annual-layer thicknesses show there is bottom melting at the site and upstream from the borehole. Surface velocity measurements, internal radio-echo layers, borehole and ice-core data are used to constrain a time-dependent flow model simulating flow along the north-northwest-trending ice-ridge flow-line, leading to the NorthGRIP site. Also time-dependent melt rates along the flowline are calculated with a heat-flow model. The results show the geothermal heat flow varies from 50 to 200 mW m–2 along the 100km section of the modeled flowline. The melt rate at the NorthGRIP site is 0.75 cm a–1, but the deep ice in the NorthGRIP core originated 50 km upstream and has experienced melt rates as high as 1.1 cm a–1.
    Repository Name: EPIC Alfred Wegener Institut
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  • 28
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    Glazialmarine Sedimentation am westantarktischen Kontinentalrand (zentrales Bellingshausenmeer) im Verlauf des letzten Glazial- Interglazial-Zyklus (2003)
    Geographisches Institut
    In:  EPIC3Göttingen, Geographisches Institut
    Details
    Publication Date: 2018-05-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 29
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    Translational diffusion of polymer chains with excluded volume and hydrodynamic interactions by Brownian dynamics simulation (2003)
    In:  EPIC3The Journal of Chemical Physics, 118(17), pp. 8061-8072, ISSN: 0021-9606
    Details
    Publication Date: 2018-02-12
    Repository Name: EPIC Alfred Wegener Institut
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  • 30
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    Interaction of Contaminants and Nutrients-Possible Consequences for the Louisiana Shelf Plankton Community Structure - Annual Report, BORSF (2003)
    In:  EPIC3
    Details
    Publication Date: 2017-02-08
    Repository Name: EPIC Alfred Wegener Institut
    Type: Miscellaneous , notRev
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  • 31
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    Benthic biogeochemistry: state of the art technologies and guidelines for the future of in situ survey (2003)
    In:  EPIC3Journal of Experimental Marine Biology and Ecology, 285-28, pp. 5-31, ISSN: 00220981
    Details
    Publication Date: 2017-03-06
    Description: Sediment and water can potentially be altered, chemically, physically and biologically as they are sampled at the seafloor, brought to the surface, processed and analysed. As a result, in situ observations of relatively undisturbed systems have become the goal of a growing body of scientists. Our understanding of sediment biogeochemistry and exchange fluxes was revolutionized by the introduction of benthic chambers and in situ micro-electrode profilers that allow for the direct measurement of chemical fluxes between sediment and water at the sea floor and for porewater composition. Since then, rapid progress in the technology of in situ sensors and benthic chambers (such as the introduction of gel probes, voltammetric electrodes or one- and two-dimensional optodes) have yielded major breakthroughs in the scientific understanding of benthic biogeochemistry. This paper is a synthesis of discussions held during the workshop on sediment biogeochemistry at the “Benthic Dynamics: in situ surveillance of the sediment–water interface” international conference (Aberdeen, UK—March 25–29, 2002). We present a review of existing in situ technologies for the study of benthic biogeochemistry dynamics and related scientific applications. Limitations and possible improvement (e.g., technology coupling) of these technologies and future development of new sensors are discussed. There are countless important scientific and technical issues that lend themselves to investigation using in situ benthic biogeochemical assessment. While the increasing availability of these tools will lead research in yet unanticipated directions, a few emerging issues include greater insight into the controls on organic matter (OM) mineralization, better models for the understanding of benthic fluxes to reconcile microelectrode and larger-scale chamber measurements, insight into the impacts of redox changes on trace metal behavior, new insights into geochemical reaction pathways in surface sediments, and a better understanding of contaminant fate in nearshore sediments.
    Repository Name: EPIC Alfred Wegener Institut
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  • 32
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    Oxygen uptake by aquatic sediments measured with a novel non-invasive eddy-correlation technique (2003)
    In:  EPIC3Marine Ecology Progress Series, 261, pp. 75-83, ISSN: 0171-8630
    Details
    Publication Date: 2017-03-06
    Description: This paper presents a new non-invasive technique for measuring sediment O2 uptake that, in its concept, differs fundamentally from other methods used to date. In almost all natural aquatic environments, the vertical transport of O2 through the water column toward the sediment surface is facilitated by turbulent motion. The new technique relies on measuring 2 parameters simultaneously and at the same point in the water above the sediment: the fluctuating vertical velocity using an acoustic Doppler velocimeter and the fluctuating O2 concentration using an O2 microelectrode. From these 2 parameters, which typically are measured 10 to 50 cm above the sediment surface for a period of 10 to 20 min and at a frequency of 15 to 25 Hz, the vertical flux of O2 toward the sediment surface is derived. Based on measurements performed under actual field conditions and comparisons with in situ flux-chamber measurements, we believe that this new technique is the optimal approach for determining O2 uptake by sediments. The technique is superior to conventional methods as measurements are done under true in situ conditions, i.e. without any disturbance of the sediment and under the natural hydrodynamic conditions. Furthermore, this technique can be used for bio-irrigated or highly permeable sediments, such as sands, where traditional methods often fail. While this paper only focuses on O2 uptake by sediments, the technique can also be applied to other solutes that can be measured at a sufficiently high temporal resolution.
    Repository Name: EPIC Alfred Wegener Institut
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  • 33
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    A new preparatory approach of decapod and thoracican crustaceans from the Middle Danian at Fakse, Denmark (2003)
    In:  Contributions to Zoology (1383-4517) vol.72 (2003) nr.2/3 p.141
    Details
    Publication Date: 2015-05-08
    Description: Many papers on the taxonomy of fossil crustaceans are often based upon poorly preserved material and/or specimens that have been insufficiently prepared. The purpose of the present note is to outline some preparation methods that are applied in our (J.S.H. Collins and S.L.J.) ongoing studies of anomuran and brachyuran decapods from the Middle Danian limestones at Fakse quarry (Denmark), which have greatly enhanced the quality of our material. The techniques briefly outlined here involve: 1 – staining method; 2 – water blasting (as a cleaning tool in preparation of fossils); and 3 – negative preparation (with acid). Some of these techniques will have wide applications in other fields of paleontological research.
    Keywords: Preparation ; Crustacea ; Danian ; Denmark
    Repository Name: National Museum of Natural History, Netherlands
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  • 34
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    The clavobranchialis musculature in sarcopterygian fishes, and contribution to osteichthyan feeding and respiration (2003)
    In:  Contributions to Zoology (1383-4517) vol.72 (2003) nr.1 p.17
    Details
    Publication Date: 2015-05-08
    Description: Various fossil lungfish taxa preserve distinct depressions on the smooth postbranchial lamina of the dermal pectoral girdle. These depressions are largely unknown in other sarcopterygian fishes, but are present in the rhizodont sarcopterygian Strepsodus. Comparisons with extant actinopterygian fishes suggest these depressions mark the point of origin for the clavobranchialis musculature, extending anterodorsally into the gill chamber to insert on the ventral surface of the ceratobranchial(s). Studios examining feeding and respiratory mechanisms of bony fishes (Osteichthyes) have emphasised the role of mandibular depression in generating negative pressures within the oral cavity to draw in water/air/food via suction. However, phylogenetically basal actinopterygians, fossil lungfish and other fossil sarcoptcrygians (such as Strepsodus) lack the apomorphies that increase suction among bony fishes. In these taxa the clavobranchialis muscles may serve to augment this negative pressure by retracting the ceratobranchials and increasing the size of the oral/ oropharyngeal cavity. A comparable action is performed by the chondrichthyan coracobranchiales muscles, particularly during feeding, and the function of these ventral gill arch muscles is likely to be a synapomorphy of jawed vertebrates (Gnathostomata). This musculature is absent from jawless vertebrates such as the Osteostraci.
    Keywords: Clavobranchiales ; Sarcopterygii ; Actinopterygii ; Chondrichthyes ; coracobranchiales ; Dipnoi
    Repository Name: National Museum of Natural History, Netherlands
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  • 35
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    Individual, local and subspecific variation in female Hermann’s tortoise (Testudo hermanni) reproductive characters (2003)
    In:  Contributions to Zoology (1383-4517) vol.72 (2003) nr.4 p.221
    Details
    Publication Date: 2015-05-08
    Description: We studied reproductive characters of a population of the tortoise Testudo h. hermanni in the Plaine des Maures (Var), and compared these to another population in southern France and to T. h. boettgeri in Greece. Clutch characters, which are measures of total reproductive investment, showed no differences between subspecies or sites after body size correction by ANCOVA. Egg characters, which measure the division of this investment among offspring, did vary significantly among both subspecies and sites after correcting for body mass. The presence of such local variation should discourage relocation of the threatened T. h. hermanni even between populations of the same subspecies.
    Keywords: Egg production ; clutch characters ; conservation ; tortoise ; Testudo hermanni
    Repository Name: National Museum of Natural History, Netherlands
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  • 36
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    The phylogeny, systematics and fossil record of the Goneplacidae MacLeay (Crustacea, Decapoda, Brachyura) revisited (2003)
    In:  Contributions to Zoology (1383-4517) vol.72 (2003) nr.2/3 p.147
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    Publication Date: 2015-05-08
    Description: We review the Goneplacidae and review the various alternative hypotheses concerning membership within the family. We offer a new cladistic based hypothesis of phylogenetic relationships within the group.
    Keywords: Crustacea ; Decapoda ; Brachyura ; Goneplacidae ; phylogeny ; systematics
    Repository Name: National Museum of Natural History, Netherlands
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  • 37
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    Interpreting ecology and physiology of fossil decapod crustaceans (2003)
    In:  Contributions to Zoology (1383-4517) vol.72 (2003) nr.2/3 p.111
    Details
    Publication Date: 2015-05-08
    Description: Decapods are the most diverse and complex group of crustaceans, adapted for life in all parts of the marine environment, many aquatic habitats, and some terrestrial niches. With this diversity of life styles, a vast range of morphotypes of decapods has evolved, exploiting almost every imaginable variation in morphology of the complex exoskeleton that characterizes them. Many of the morphological variants are a response to exploiting a particular niche in which the organisms live or an adaptation to particular behavioral characteristics. Assessing the significance of morphological variation in the fossil record is challenging because of the taphonomic overprint that results in loss of soft tissue, preservation of partial remains of hard parts, and vastly reduced numbers of preserved individuals as contrasted to the once-living population. The purpose of the present paper is to identify aspects of morphology that may be useful in interpreting the behavioral responses of the organism to its environment, w,th primary emphasis on morphological features of the exoskeleton that are not expressed on all individuals but that occur at low, and unpredictable, frequencies.
    Keywords: Crustacea ; Decapoda ; Mesozoic ; Cenozoic ; behavior
    Repository Name: National Museum of Natural History, Netherlands
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  • 38
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    Variation in number of trunk vertebrae and in count of costal grooves in salamanders of the family Hynobiidae (2003)
    In:  Contributions to Zoology (1383-4517) vol.72 (2003) nr.4 p.195
    Details
    Publication Date: 2015-05-08
    Description: Ten species from five genera of the family Hynobiidae were studied. The number of trunk vertebrae varied between 14 and 21, and the count of costal grooves ranged from 10 to 15. Both the within-species variation and the within-population variation were recorded in some species. In both kinds the values of the coefficient of variation were quite low. In Salamandrella keyserlingii, the south-eastern samples markedly differed from remaining ones. Among the hynobiids, the genus Onychodactylus (both species) and Batrachuperus mustersi have higher number of vertebrae in the anterior part of trunk (5 and 4, respectively, versus 3), and, thus, demonstrated a distinct position. The relation between the number of trunk vertebrae and the count of costal grooves was studied. The variation in number of trunk vertebrae across urodelan families was discussed.
    Keywords: Hynobiidae ; trunk vertebrae ; costal grooves
    Repository Name: National Museum of Natural History, Netherlands
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  • 39
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    Book reviews (2003)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.18 (2003) nr.2 p.238
    Details
    Publication Date: 2015-06-05
    Description: This book is dedicated to the world-known specialist in marine mycology, E. B. Gareth Jones on the occasion of his 65th birthday, for his substantial contribution to marine mycology. It contains 22 contributions by a multitude of authors, grouped around the central theme of Fungi in marine environments. The book is divided into three parts. Part 1 (organisms), contains contributions on fungal species: taxonomy, based on morphology as well as molecular characters, treating groups like the Oomycete genus Halophytophtora, and ascomycete groups like de Halosphaeriales, Loculoascomycetes, Lophiostoma and Massarina, as well as marine yeasts, and a contribution on anamorphteleomorph connections in marine ascomycetes. Part 2 is devoted to ecology, mainly to mangrove habitats and sea-grass communities, which harbour lots of marine fungi. Also the subject of endangered mangrove habitat is treated. Finally, Part 3 of the book deals with applied aspects of marine fungi, with contributions on secondary metabolites from marine fungi, bioremediation of coloured pollutants by terrestrial versus facultative marine fungi, fatty acids in Thraustochytrids, as well as molecular cloning of the isopenicillin synthase gene in the marine fungus Kallichroma tethys.
    Repository Name: National Museum of Natural History, Netherlands
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  • 40
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    Notulae ad Floram agaricinam neerlandicam — XL. New combinations in Conocybe and Pholiotina (2003)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi (0031-5850) vol.18 (2003) nr.2 p.225
    Details
    Publication Date: 2015-04-20
    Description: Some new combinations in Conocybe are made and justified. The name Conocybe apala is proposed to replace the names C. albipes and C. lactea. Conocybe albipes var. pseudocrispa and C. moseri var. bisporigera are distinguished on the rank of species. On the other hand, Conocybe subalpina is reduced to a variety of C. pallida and C. rickenii to a forma of C. siliginea. In addition, three new combinations are made in Pholiotina on the rank of subsections.
    Repository Name: National Museum of Natural History, Netherlands
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  • 41
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    Review (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.2 p.260
    Details
    Publication Date: 2015-03-06
    Repository Name: National Museum of Natural History, Netherlands
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  • 42
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    Nepenthes izumiae (Nepenthaceae): a new species from Sumatra (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.1 p.179
    Details
    Publication Date: 2015-03-06
    Description: Nepenthes izumiae Troy Davis, C. Clarke & Tamin (Nepenthaceae), a new species from the Bukit Barisan, West Sumatra, Indonesia, is described.
    Repository Name: National Museum of Natural History, Netherlands
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  • 43
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    Miscellaneous notes on Thai Gramineae (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.3 p.495
    Details
    Publication Date: 2015-03-06
    Description: In recent collections of herbaceous grasses from Thailand some novelties were detected: Eremo- chloa maxwellii Veldk. and Parahyparrhenia laegaardii Veldk. New records for Thailand are: Eragrostis tenuifolia (Hochst.) Steud., Eulalia tetraseta Ohwi, Germainia thorelii A. Camus, Sporobolus tenuissimus (Schrank) Kuntze. A second collection after the type was made of Germainia pilosa Chai-Anan.
    Keywords: Eragrostis ; Eremochloa ; Eulalia ; Germainia ; Parahyparrhenia ; Sporobolus ; Gramineae ; Thailand
    Repository Name: National Museum of Natural History, Netherlands
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  • 44
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    A new species of Millettia (Leguminosae–Papilionoideae) from West Africa (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.1 p.163
    Details
    Publication Date: 2015-03-06
    Description: Millettia liberica Jongkind (Leguminosae–Papilionoideae) from the forests of western Africa is described and illustrated.
    Repository Name: National Museum of Natural History, Netherlands
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  • 45
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    Flora Malesiana precursor for the treatment of Moraceae 2: Ficus subgenus Pharmacosycea section Oreosycea (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.2 p.289
    Details
    Publication Date: 2015-03-06
    Description: The position of Ficus subg. Pharmacosycea sect. Oreosycea and its subdivision are briefly discussed. A new subsection Glandulosae C.C. Berg is established. Five new species are described for the Malesian region: F. carinata, F. matanoensis, F. saruensis, F. sclerosycia, and F. subcaudata. Ficus pubinervis Blume and F. minor King are reduced to subspecies of F. nervosa Roth.
    Keywords: Moraceae ; Ficus subg. Pharmacosycea sect. Oreosycea ; Malesia
    Repository Name: National Museum of Natural History, Netherlands
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  • 46
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    Revision of the Malesian and Thai species of Sauropus (Euphorbiaceae: Phyllanthoideae) (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.2 p.319
    Details
    Publication Date: 2015-03-06
    Description: Fourteen species of Sauropus are recognised for Malesia, 21 for Thailand. Two species are described as new, S. asymmetricus of Sumatra and S. shawii of Borneo. Many new synonyms, especially for S. androgynus and S. rhamnoides, are provided. The latter two species have a much wider distribution than described before and both are difficult to separate from each other. A phylogeny based on morphological and palynological data proved futile, but showed that Sauropus together with Breynia and Glochidion are embedded in the paraphyletic Phyllanthus. Most species which formerly belonged to Synostemon and are now included in Sauropus are probably, with the exception of S. bacciformis, related to Breynia and Glochidion. Because of the poor phylogenetic results the circumscription of Sauropus is not changed (Synostemon still included), and an infrageneric classification is not provided.
    Keywords: Euphorbiaceae ; Sauropus ; Synostemon ; Malesia ; Thailand
    Repository Name: National Museum of Natural History, Netherlands
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  • 47
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    Flora Malesiana precursor for the treatment of Moraceae 4: Ficus subgenus Synoecia (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.3 p.551
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    Publication Date: 2015-03-06
    Description: The sections and subsections of Ficus subg. Synoecia are described and their Malesian species listed and keyed out. Six new species are described or established in the subgenus: F. cavernicola, F. colobocarpa, F. jacobsii, F. jimiensis, F. sohotonensis, and F. submontana. The combination F. disticha Blume subsp. calodictya (Summerh.) C.C. Berg is made and the lectotypes for F. alococarpa Diels and F. simiae H.J.P. Winkl. are designated.
    Keywords: Moraceae ; Ficus subg. Synoecia ; Malesia
    Repository Name: National Museum of Natural History, Netherlands
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  • 48
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    New species of Schizostachyum (Poaceae–Bambusoideae) from the Andaman Islands, India (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.1 p.187
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    Publication Date: 2015-03-06
    Description: Two new species of Schizostachyum Nees: S. andamanicum and S. kalpongianum, are described and illustrated.
    Repository Name: National Museum of Natural History, Netherlands
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  • 49
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    Contribution of micromorphology to the taxonomy of Abrus (Leguminosae–Papilionoideae) (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.1 p.153
    Details
    Publication Date: 2015-03-06
    Description: Despite the various taxonomic revisions of Abrus Adans., species and infraspecific delimitation are not always clear. In those revisions very little reference is made to micromorphological characters, in particular to those of the compound leaves, in spite of the stability of some of those characters. By using techniques of light and scanning microscopy this study reveals some interesting results concerning to leaflet surface, such as some of the characters of the epidermis cells, stomata, presence of papillae and trichomes. These characters show some range of variation at the species level but not at the subspecies level. We conclude that those structures can provide additional characters useful in Abrus for species and infraspecific segregation. This study also supports Breteler’s delimitation of the African Abrus species.
    Repository Name: National Museum of Natural History, Netherlands
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  • 50
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    Review (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.2 p.318
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    Publication Date: 2015-03-06
    Repository Name: National Museum of Natural History, Netherlands
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  • 51
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    Revision of the genus Phyllagathis (Melastomataceae: Sonerileae) II. the species in Borneo and Natuna Island (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.1 p.69
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    Publication Date: 2015-03-06
    Description: A revision of the genus Phyllagathis Blume is presented under a wider generic concept than used by earlier authors. This section of the revision will focus exclusively on the species in Borneo and Natuna Island. Eighteen species are endemic to Borneo, and only P. steenisii is endemic to Natuna Island, a small Indonesian island off the northern coast of Sarawak. One new species is described and several new combinations are established with the inclusion of pentamerous genera into Phyllagathis.
    Repository Name: National Museum of Natural History, Netherlands
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  • 52
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    Notes on Malesian Fabaceae (Leguminosae–Papilionoideae). 10. The genus Alysicarpus (2003)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.48 (2003) nr.1 p.145
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    Publication Date: 2015-03-06
    Description: Alysicarpus Desv. is revised for the Flora Malesiana area. The recently described species A. aurantiacus Pedley is recorded for several localities in Papua New Guinea. Alysicarpus monilifer L. is recorded for Luzon (Philippines). The variability of A. vaginalis is discussed. A key for the Malesian species is presented.
    Repository Name: National Museum of Natural History, Netherlands
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  • 53
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    Congo Fan Neogene and Quaternary sedimentation: Interplay of riverine and current induced deposition (2003)
    In:  EPIC3Wefer, G., Mulitza, S., and Ratmeyer, V. (eds), The South Atlantic in the Late Quaternary: reconstruction of material budget and current systems. Berlin, Heidelberg, New York : Springer., pp. 279-293
    Details
    Publication Date: 2019-07-16
    Description: The incorporation of information regarding sedimentation rates and lithology from ODP Leg 175 Sites 1075, 1076 and 1077 into the analysis and interpretation of high-resolution seismic reflection data led to the revision and refinement of a depositional model for the upper Congo Fan area presented earlier by Uenzelmann-Neben (1998). The main sediment contributor to the upper fan was determined for four time slices since the Eocene (Late Oligocene - Miocene/Pliocene, Pliocene - 600 ky, 600 ky - ~160 ky, ~160 ky - Recent). Thus we can say that input of sediments from the north dominated the area in the Late Paleogene by either a south setting current or the Kouilou/Niari River. This situation continued to the period Pliocene - 600 ky when southern sediment sources (the Congo River and upwelling) became dominant, with the material being deflected to the north by the Benguela Current. As a sediment source on the upper fan, upwelling became even more important after 600 ky while the main sediment load of the Congo River is guided to the middle and lower fan via the Congo Canyon.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
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  • 54
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    Three-dimensional glacier surface velocities of the Storstrømmen glacier, Greenland derived from radar interferometry and ice-sounding radar measurements (2003)
    In:  EPIC3Journal of Glaciology, Vol. 49, No. 165, pp. 201-209, ISSN: 0022-1430
    Details
    Publication Date: 2019-07-17
    Description: Non-steady-state vertical velocities of up to 5 m y-1 exceed the vertical surface-parallel-flow components over much of the ablation area of Storstrømmen, a large outlet glacier from the East Greenland ice sheet. Neglecting a contribution to the vertical velocity of this magnitude, results in substantial errors (up to 20%) also on the south north component of horizontal velocities derived by satellite synthetic aperture radar interferometry (InSAR) measurements. In many glacier environments the steady-state vertical velocity component required to balance the annual ablation rate is 5 to 10 m y-1 or more. This indicates that the surface parallel flow assumption may be problematic also for glaciers in steady state. Here we derive the three-dimensional surface velocity distribution of Storstrømmen by using the principle of mass conservation to combine InSAR measurements from ascending and descending satellite tracks with airborne ice-sounding radar measurement of ice thickness. The results are compared to InSAR velocities previously derived by using the assumption of surface parallel flow, and to velocities obtained by Inin-situ GPS measurements. The velocities derived by using the principle of mass conservation are in better agreement with the GPS-velocities than the previously calculated velocities derived with the assumption of surface parallel flow.
    Repository Name: EPIC Alfred Wegener Institut
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  • 55
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    Sequential parameter estimation for stochastic systems (2003)
    In:  EPIC3Nonlinear Processes in Geophysics 10, pp. 253-259
    Details
    Publication Date: 2019-07-17
    Description: The quality of the prediction of the dynamical system evolutionis determined by the accuracy to which initial conditions andforcing are known. Availability of future observations permitsreducing the effects of errors in assessment the external modelparameters by means of a filtering algorithm. However, traditionalfiltering schemes do not take into account uncertainties in specifyingthe internal model parameters and thus cannot reduce their contributionto the forecast errors. An extension of the Sequential ImportanceResampling filter (SIR) is proposed to this aim. The filter is verifiedagainst the Ensemble Kalman filer (EnKF) in application to the stochasticLorenz system. It is shown that the SIR is capable to estimatethe system parameters and to predicts the evolution of the system witha remarkably better accuracy than the EnKF. This highlights a severedrawback of any Kalman filtering scheme: due to utilizing only first twostatistical moments in the analysis step it is unable to deal withprobability density functions badly approximated by the normaldistribution.
    Repository Name: EPIC Alfred Wegener Institut
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    Polycystine radiolarians in the GreenlandIcelandNorwegian Seas: Species and assemblage distribution (2003)
    In:  EPIC3Sarsia, 88(1), pp. 65-88
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    Publication Date: 2019-07-17
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    Representation of Greenland ice sheet surface climate in the HIRHAM regional climate model (2003)
    In:  EPIC3Journal of Climate, Vol. 16, No. 6, pp. 1302-1319
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    Publication Date: 2019-07-16
    Description: Annual cycles and multi-year summer simulations of Greenland ice sheet surfaceclimate are made with the 0.5 degree horizontal resolution regional climate modelHIRHAM. The model results are compared with meteorological and energy balanceobservations from 15 Greenland Climate Network (GC-Net) automatic weatherstations. The model reprouces the surface climate, often within model andobservational uncertainty. However, the presence of numerous systematic modelbiases have been identified. Improving the representation of the model orographywould constitute a major improvement of the simulation of the Greenland ice sheetsurface climate, for biases in parameters such as temperature and pressure arelinked with elevation errors, not physical model error. The modeled near surface airtemperatures are warmer compared to observations, resulting primarily from thepoor resolution of the near surface layer and near surface temperature inversion.A more advanced planetary boundary layer scheme for Arctic conditions yieldedpromising results in a sensitivity run. Additional model warm bias is linked withnegative albedo bias which leads to a positive net shortwave bias. Negative albedobias is caused by a insufficient ice sheet elevation representation (-190 m averageorography bias) that results in warmer temperatures. Surface sensible heat fluxes are overestimated,likely due to model warm bias and too great wind speed. Latent heat fluxes in the model arealso larger than calculated from GC-Net measurements, indicating more evaporation than observationssuggest. Furthermore, the bulk model for evaporation neglects the majority ofwater vapour deposition, particularly at high elevations. Annual maps and total massflux of precipitation and evaporation are analyzed in context of results in literature.Based on the results of a multi parameter comparison, numerous recommendationsfor further model development are made.
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    Sequential weak constraint parameter estimation in an ecosystem model (2003)
    In:  EPIC3Journal of Marine Systems, 43, pp. 31-49
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    Publication Date: 2019-07-16
    Description: A Sequential Importance Resampling filter is applied to assimilate dataof the Bermuda Atlantic Time-series Study for the periodDecember 1988 to January 1994 into a 9-compartments ecosystemmodel. The filter provides an opportunity to combine state and parameterestimations. We detected notable seasonality of some model parameters.A filtered solution is in close agreement with the data and is superiorto that obtained with fixed model parameters. The seasonal dependenceof the initial slope of the P-I curve agrees with other known estimates.The seasonality of the phytoplankton specific mortality rate obtainedcan point out that either the phytoplankton mortality parameterizationhas to be improved or the Chl:C ratio varies in time. Being of the samecomputational cost as the Ensemble Kalman filter, the data assimilationapproach used can be implemented for on-line tuning and operationalprediction the ecosystem dynamics with a coupledhydrodynamical-ecosystem model.
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    Environmental history of the southeastern South Atlantic since the middle Miocene: evidence from the sedimentological records of ODP Sites 1088 and 1092 (2003)
    In:  EPIC3Sedimentology, 50, pp. 511-529
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    Publication Date: 2018-08-10
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    Population structure, growth and production of the surf clam Donax serra (Bivalvia, Donacidae) on two Namibian sandy beaches (2003)
    In:  EPIC3Estuarine coastal and shelf scienceS, 58, pp. 105-115, ISSN: 0272-7714
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    Publication Date: 2019-07-16
    Description: Population structure, growth and production of the surf clam Donax serra (Bivalvia, Donacidae) inhabiting highly exposed sandy beaches of Namibia, were investigated between November 1997 and December 1999. From length-frequency distribution and tagging-recapture data a von Bertalanffy growth function with an asymptotic length (L*) of 82 mm and a growth constant (K) of 0.274 y-1 was established. Regarding growth performance of Donacidae, D. serra fits in a group of species inhabiting cold-temperate and upwelling regions. The intertidal biomass of the studied population ranged between 141 g ash free dry mass (AFDM) m-2 y-1 and 546 g AFDM m-2 y-1. Individual production was maximal at 56.5 mm shell length (0.83 g AFDM ind.1 y1) and annual production ranged between 167 g AFDM m-2 y-1 and 637 g AFDM m-2 y-1, resulting in productivity values (P/B) between 1.167 y-1 and 1.589 y-1. This data underlines the importance of D. serra for the beach/surf ecosystem. Further the findings of this study are crucial to support future aquaculture or exploitation activities and management.
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    Reconstruction of glacial/interglacial changes in the global carbon cycle from CO2 and d13CO2 in Antarctic ice cores (2003)
    In:  EPIC3Memoirs of the National Institute for Polar Research, 57, pp. 121-138
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    Publication Date: 2019-07-17
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    Modern terrigenous organic carbon input to the Arctic Ocean (2003)
    In:  EPIC3In: Stein, R. and Macdonald, R.W. (Eds.) Organic Carbon Cycle in the Arctic Ocean: Present and Past. Springer Verlag, Berlin. p., pp. 33-55
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    Publication Date: 2019-07-17
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    Net accumulation of the Greenland ice sheet: High resolution modeling of climate changes (2003)
    In:  EPIC3Geophysical Research Letters, 30(9), 1485 p.
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    Publication Date: 2019-07-16
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    M_2 tidal dynamics in the Ross Sea (2003)
    In:  EPIC3Antarctic Science, 15(1), pp. 41-46
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    Publication Date: 2019-07-16
    Description: In certain regions of the Southern Ocean, tidal energy is believed to foster the mixing of differentwater masses, which eventually contribute to the formation of deep and bottom waters. The RossSea is one of the major ventilation sites of the global ocean abyss and a region of sparse tidalobservations. We investigated tidal dynamics in the Ross Sea using a three-dimensional sigmacoordinate model, the Regional Ocean Model Systems (ROMS). Realistic topography andhydrography from existing observational data were used with a single tidal constituent, thesemi-diurnal M2. The model fields faithfully reproduced the major features of the tidal circulationand had reasonable agreement with ten existing tidal elevation observations and forty-twoexisting tidal current measurements. The differences were attributed primarily to topographic errors.Internal tides were generated at the continental shelf/slope break and other areas of steeptopography. Strong vertical shears in the horizontal velocities occurred under and at the edges ofthe Ross Ice Shelf and along the continental shelf/slope break. Estimates of lead formation basedon divergence of baroclinic velocities were significantly higher than those based on barotropicvelocities, reaching over 10% at the continental shelf/slope break.
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    North Atlantic Deep Water and Antarctic Bottom Water: Their interaction and influence on the variability of the global ocean circulation (2003)
    In:  EPIC3Journal of Geophysical ResearchC2), 108, 3022 p.
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    Publication Date: 2019-07-17
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    Regional ecosystem dynamics in the ACC: Simulations with a three-dimensional ocean-plankton model (2003)
    In:  EPIC3Journal of Marine Systems, 42, pp. 31-51
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    Publication Date: 2019-07-17
    Description: Within the high nutrient --- low chlorophyll regime of the Antarctic Circumpolar Current (ACC), high phytoplankton concentrations are frequently observed in the vicinity of the Antarctic Polar Front (APF).As is typical for frontal systems, hydrography in this region is characterized by meanders and eddies as well as up- and downwelling cells which redistribute nutrients and influence the depth of the euphotic zone.To study the processes leading to the observed phytoplankton distribution, a coupled ocean plankton model for ecosystem studies in the ACC has been developed.The ocean component is an eddy-resolving version of the s-Coordinate Primitive Equation Model (SPEM).The model has a horizontal resolution of 1/12$^\circ$ and a vertical resolution increased near the surface.The biological model (BIMAP) comprises two biogeochemical cycles - silica and nitrogen - and a prognostic iron compartment to include possible effects of micronutrient limitation.Model results indicate that part of the ecosystem's regionalvariability can be attributed to the effect of vertical and horizontal advection.However, frontal dynamics alone cannot explain the observed enhanced concentrations of phytoplankton biomass near the APF and the minima in the northern and southern ACC.Simulations which neglect possible effects of iron limitation cannot reproduce the observed large scale phytoplankton distribution.Only when iron limitation is taken into account, the model simulates plankton concentrations in close agreement with observations during the SO-JGOFS cruises.While in the northern ACC phytoplankton growth is limited by silicate, primary production is limited by iron limitation south of the APF.Near the APF, mesoscale iron upwelling enhances primary production, leading to increased phyto- and zooplankton biomass.The meridional structure with two plankton maxima is closely linked to the cross-front overturning circulation.This double-cell circulation with two upwelling branches is caused by the northward sloping large scale bottom topography.keywords: Antarctic Polar Front, ocean-plankton model, phytoplankton distribution, iron limitation
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    Terrigenous sediment supply in the polar to temperate South Atlantic: Land-ocean links of environmental changes during the late Quaternary (2003)
    In:  EPIC3Wefer, G., Mulitza, S., Ratmeyer, V. (Eds.): The South Atlantic in the Late Quaternary: Reconstruction of Material Budget and Current Systems. , Berlin Heidelberg New York : Springer-Verlag, p., pp. 375-399, ISBN: 3-540-21028-8
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    Publication Date: 2018-08-10
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    Crustal structure of northwestern Svalbard and the adjacent Yermak Plateau: Evidence for Oligocene simple shear rifting and non-volcanic break-up. (2003)
    In:  EPIC3Geophysical Journal International, 152, pp. 139-159
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    Publication Date: 2019-07-16
    Description: In 1999 new seismic refraction data were collected off northwestern Svalbard and theadjacent Yermak Plateau. A 260 km long profile provides detailed velocity informationfor the northeastern edge of the Eurasian Continent and the adjacent Yermak Plateau.North of Forlandsundet Graben the depth of the Moho varies between 23 and 28 km,and remains at this depth to the northern edge of the profile at 81°N. The crustal lithologyoff western Svalbard can be related to the basement province west of the Raudfjorden Fault Zone.Off the northern shoreline of Svalbard the structure of the Tertiary Danskoya Basin is mapped.Below this, a late Silurian/early Devonian basin, with seismic velocities between 5.1 and 5.8 km/sand a thickness of up to 8 km is present. A Paleozoic sequence of up to 6 km thickness isexpected below the Tertiary cover north of the Danskoya Basin. An earlier suggestion, thatOligocene rift processes affected the southern Yermak Plateau (Eiken, 1993), is confirmed.A detachment structure is situated below the Paleozoic Basin below Danskoya Basin, whichis likely the consequence of simple shear tectonics. The middle crust exhibits low seismicvelocities above the detachment fault. The lowermost crust beneath is slightly contaminated bymantle derived melts, which is deduced by the slightly elevated velocities of the lowermost crust.These melts can be attributed to decompressive melting caused by modest uplift of the Mohoduring stretching.The velocity-depth model provides no evidence for large magmatic activitythat implies a non-volcanic rifted margin history. This leads to the assumption that the proposedermak Hot Spot during the break-up of Svalbard from northern Greenland did not exist.
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    Particle fluxes in the ocean: Comparison of sediment trap data with results from inverse modeling (2003)
    In:  EPIC3Journal of marine systems, 39, pp. 167-183
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    Publication Date: 2019-07-16
    Description: Biological production lowers the CO_2 concentrations in the surfacelayer of the ocean, and sinking detritus ``pumps'' nutrients andCO_2 into the deep ocean. Quantifying the efficiency of thebiological pump is a prerequisite for global CO_2 budgets. Sedimenttraps are commonly used to directly measure the vertical particleflux, however, for logistical and financial reasons traps cannotprovide area-wide data sets. Moreover, it has been shownthat sediment traps can under- or overestimate particle fluxes considerably.In this paper we present a new technique to estimate the downward fluxof particulate matter with an adjoint model. Hydrographic and nutrientdata are used to calculate the mean ocean circulation together withparameters for particle fluxes using the AWI Adjoint Model for OceanicCarbon Cycling (AAMOCC). The model is fitted to the propertyconcentrations by systematically varying circulation, air-sea fluxes,export production and remineralization rates of particulate biogenicmatter simultaneously.The deviations of model fluxes based on nutrient budgets from directmeasurements with sediment traps yield an independent estimate ofapparent trapping efficiencies. While consistent with hydrographicand nutrient data, model particle fluxes rarely agree with sedimenttrap data: (1) At shallow water depth (〈 1000m), sediment trapfluxes are at the average 50% lower than model fluxes, which confirmsflux calibrations using radionuclides; (2) in the very deep traps,model fluxes tend to be lower compared to data which might beexplained by lateral inputs into the traps. According to these modelresults, particle fluxes from the euphotic zone into mid water depthare considerably higher and the shallow loop of nutrient is morevigorous than would be derived fromsediment trap data.Our results imply that fluxes as collected with sediment traps areinconsistent with model derived long-term mean particle fluxes basedon nutrient budgets in the water column. In agreement with recentradionuclide studies we conclude that reliable export flux estimatescan only be obtained from sediment trap data if appropriatecorrections are applied.
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    Depth Dependent Elemental Compositions of Particulate Organic Matter (POM) in the Ocean (2003)
    In:  EPIC3Global biogeochemical cycles, 17(2).1029/2002GB001871, 10
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    Publication Date: 2019-07-16
    Description: The production and downward transport of particulate organic matter (POM) creates vertical nutrient and carbon gradients controlling the CO2 exchange between ocean and atmosphere. C:N:P element ratios of POM determine relative magnitudes of downward phosphorus, nitrogen and carbon fluxes. Despite observational evidence for variable element ratios, it is common practice to use the constant Redfield ratios for biogeochemical modeling, which might lead to an underestimation of downward carbon fluxes. To determine elemental ratios of POM and their impact on the marine carbon cycle, we assembled C/N data for particulate material from different sources into a single data collection for joint evaluation. The dataset contains 10200 C/N values, encompassing all major oceans and trophic levels. This dataset shows that C/N ratios are highly variable with values below the traditional Redfield ratio (C/N=6.6) to values greatly exceeding it. On a global mean, C/N ratios of marine sinking particles from the surface water amount to 7.1, and there is a systematic increase of C/N ratios with depth of 0.2 units per 1000 m. The discrepancy with results from dissolved nutrient fields (constant ratios close to Redfield's value) can be explained by implicit depth averaging caused by depth variations of the surfaces under consideration. Due to preferential remineralization of N, the C/N ratio of the dissolving component (seen on dissolved nutrient fields) is smaller than the C/N ratio of the remaining particles. For flux estimations, variable C/N ratios should be implemented in biogeochemical models to correctly represent relative strengths of carbon and nitrogen fluxes.
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    A Parameterization of Ice Shelf-Ocean Interaction for Climate Models (2003)
    In:  EPIC3Ocean Modelling, 5, pp. 157-170
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    Publication Date: 2019-07-17
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    Dynamics versus thermodynamics: The sea-ice thickness distribution (2003)
    In:  EPIC3Sea Ice - An Introduction to its Physics, Biology, Chemistry and Geology (Ed. by D.N. Thomas & G.S. Dieckmann), Blackwell Scientific, pp. 82-111
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    Publication Date: 2014-04-15
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    Aquaculture and Environmental Regulations: The German Situation within the North Sea (2003)
    In:  EPIC3in: Kirchner, A. (Ed.). International Marine Environmental Law: Institutions, Implementation and Innovation. International Environmental. The Hague : Kluwer. pp. 211-229 (Law and Policies Series of Kluwer Law International ; 64), ISBN: 90-411-2065-3
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    Publication Date: 2014-04-15
    Description: The use of the North Sea is extremely multi-faceted and high competitive.Within the vast variety of regulations within the EU and in Germany, theregulative framework relevant to aquaculture is yet incomplete. This paperprovides a short summary of the current legislative framework existent oninternational, national, and regional levels, which pertain aquaculturedevelopment in Germany. Following, it highlights the question of decisionmakingin the coastal zone within an integrated coastal zone management(ICZM) approach. It can be shown, that there is an ample need forsufficient regulations to optimise the management of the marineresources, especially in respect to further ecological and socio-economicsound aquaculture development. Within the ICZM framework foraquaculture management in the North Sea, we propose a scheme forfurther development and the establishment of an independentregulatory/advisory body, which encompasses all spatial levels.Additionally, we show which tools, such as DSS (e.g. GIS) and activeparticipation, could be used in such a scheme in the decision makingprocess and what outcomes at which stage is to be expected. The articlecloses with a call for integrative action in Germany for the furtherpromotion of aquaculture development by endorsing the idea of ICZM inorder to sustain its economic potential as alternative livelihood for coastalcommunities.
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    A new microcosm to investigate the oxygen dynamics of the sea-ice water interface (2003)
    In:  EPIC3Aquatic microbial ecology, 30, pp. 197-205
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    Publication Date: 2019-07-17
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    Continuity equations as expressions for local balances of masses in cloudy air (2003)
    In:  EPIC3Tellus series a-dynamic meteorology and oceanography, 55(3), pp. 247-254
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    Publication Date: 2019-07-17
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    Ice cores from Arctic sub-polar glaciers: chronology and post-depositional processes deduced from radioactivity measurements (2003)
    In:  EPIC3Journal of Glaciology:, 49(164), pp. 149-158, ISSN: 0022-1430
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    Publication Date: 2019-07-16
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    Lateral tidal mixing in the Antarctic marginal seas (2003)
    In:  EPIC3Ocean Dynamics, 53, pp. 21-26
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    Morphological reinvestigation and characterisation of the marine, sand-dwelling dinoflagellate Adenoides eludens (Dinophyceae) (2003)
    In:  EPIC3European Journal of Phycology 38:, pp. 385-394, ISSN: 0967-0262
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    Publication Date: 2019-07-17
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    Persistent organic pollutants (POPs) in antarctic fish: levels, patterns, changes (2003)
    In:  EPIC3Chemosphere, 53(6), pp. 667-678
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    Publication Date: 2019-07-17
    Description: Organochlorine compounds were analysed in three fish species of different feeding types from the area of Elephant Island in the Antarctic. In 1996, HCB (means: 15-20 ng/g lipid), p,p'-DDE (5-13 ng/g lipid) and mirex (1-7 ng/g lipid) predominated, while PCBs were minor components (PCB 153: 0.4-2 ng/g lipid). Concentration patterns were species-dependent: PCB 180, PCB 153, mirex, nonachlor III, trans-nonachlor and the toxaphene compound B8-1413 were highest in the bottom invertebrate feeder Gobionotothen gibberifrons and lowest in the krill feeder Champsocephalus gunnari. Levels of p,p'-DDE, PCB 138 and heptachloro-1'-methyl-1,2'-bipyrrole (Q1), a natural bioaccumulative product, were highest in the fish feeder Chaenocephalus aceratus, whereas HCB was present in about equal concentrations in all species. Most compounds were taken up preferentially via the benthic food chain, the chlorinated bipyrrole via the pelagic food chain and HCB from the water. In antarctic fish, biomagnification was generally more important than bioconcentration. Between 1987 and 1996, most POP levels showed significant increases in the benthos feeder and the fish feeder, while they remained nearly constant or increased less in the krill feeder. Hence, the former species represent indicator species for changing POP levels in Antarctica. Ratios (1996/1987) of average concentrations in G. gibberifrons were: PCB 138 0.7, HCB 0.8, B8-1413 1.5, PCB 180 1.7, PCB 153 1.8, p,p'-DDE 2.0, nonachlor III 2.9, trans-nonachlor 3.3, mirex 6.7. By comparison with trends in the northern hemisphere it is concluded that global distribution of HCB is close to equilibrium. Changing levels of other POPs reflect global redistribution and increasing transfer to antarctic waters probably due to recent usage in the southern hemisphere and climate changes.
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    How predictable is high bivalve recruitment in the Wadden Sea after a severe winter? (2003)
    In:  EPIC3Journal of sea research, 49, pp. 47-57
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    Publication Date: 2016-07-28
    Description: Higher than average recruitment among bivalves on the intertidal flats of the Wadden Sea was observed many times after severe winters in the period 1940 - 1995. The occurrence of another severe winter in 1995/96 prompted us to test the hypothesis of severe winters leading to universally high bivalve recruitment on a large geographic scale (500 km coastline) in temperate shallow waters. We analysed data sets on bivalve abundance from seven areas in the Dutch, German and Danish Wadden Sea. The longer data sets showed generally higher bivalve recruitment in the 1970Žs and 1980Žs than in the 1990Žs which may be related to the near absence of severe winters since 1987. Considering the period 1988 onwards (the longest possible period in which 1995/96 was the only severe winter), recruitment of Cerastoderma edule was in 1996 - in agreement with our hypothesis - above average at all seven investigated areas. In contrast, recruitment of Macoma balthica and Mya arenaria was for the same period above average only in the southern Wadden Sea (south-west of Jade Bay) but not in the northern Wadden Sea (north of Eiderstedt peninsula). These regional differences may be related to (i) the different topography of the northern Wadden Sea (with barrier islands westwards to the mainland) compared to the southern Wadden Sea (with barrier islands northwards to the mainland) and subsequent differential effects of wind induced currents on bivalve recruitment, (ii) differences in biotic factors such as standing stocks, larval supply or epibenthic predation or (iii) changes in environmental conditions. Our results demonstrate that large-scale comparisons along coasts are an indispensable addition to insights derived from local studies alone.
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    Reproductive isolation between intertidal and subtidal Scoloplos armiger (Polychaeta, Orbiniidae) indicates sibling species in the North Sea (2003)
    In:  EPIC3Marine Biology, 14(3), pp. 511-517, ISBN: 0025-3162 (Print) 14
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    Metapopulation structure in the lagoon cockle Cerastoderma lamarcki in the northern Wadden Sea (2003)
    In:  EPIC3Helgoland Marine Research, 56, pp. 252-258
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    Evaluation of triterpenols and sterols as organic matter biomarkers in a mangrove ecosystem in Northern Brazil (2003)
    In:  EPIC3Wetlands, 11, pp. 257-263
    Details
    Publication Date: 2019-07-17
    Description: Mangrove leaves, sediment, and excrement from the land crab Ucides cordatus (swamp ghost crab) from the coastal mangrove areas of Bragança peninsula in North Brazil were analysed to determine suitable biomarkers for mangrove-derived organic matter. Leaves of Rhizophora mangle (red mangrove), the dominant species in the area, were characterised by high amounts of b-amyrin, germanicol, taraxerol, and lupeol. Avicennia germinans (black mangrove) mainly contained betulin, lupeol, and b-sitosterol, whereas significant quantities of b-sitosterol and lupeol were typical of Laguncularia racemosa (white mangrove), the locally least abundant species. Except for betulin, the excrement of U. cordatus contained all of the above substances, but most strongly reflected the triterpenol signature of R. mangle leaves, the predominant diet of this crab. Surface sediments from various mangrove locations had relatively uniform compositions that possibly reflect tidal mixing. Sediment extracts were dominated by taraxerol and contained smaller amounts of b-amyrin, germanicol, and lupeol. Only sediments in a marsh area, dominated by Sporobolus virginicus (seashore dropseed) and Eleocharis sp. (spikerush), revealed a different biomarker distribution. Core samples of subrecent sediment (up to 4000 14C yr BP), for which previous pollen analysis indicated vegetation dominated by mangroves, had compositions similar to that of surface sediment. Taraxerol was the main component in the examined mangrove sediments and may be a marker for mangrove matter in this region, although analysis of plant material did not unequivocally support this. Germanicol is suggested to be a biomarker for organic matter from R. mangle in North Brazil. It was detected in older sediments and apparently not significantly affected by ingestion by land crabs.
    Repository Name: EPIC Alfred Wegener Institut
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    Campylonotus arntzianus, a new species of the Campylonotidae (Crustacea: Decapoda: Caridea) from the Scotia Sea (Antarctica) (2003)
    In:  EPIC3Polar Biology:, 26, pp. 242-248
    Details
    Publication Date: 2019-07-17
    Description: Two specimens of Campylonotus arntzianus sp. nov. were caught in the Antarctic Scotia Sea off Saunders Island (57°40,31ŽS, 26°27,81ŽW) using an Agassiz trawl at one station (depth: 475 to 589 m). The new species here described is the fifth representative of the monogeneric family Campylonotidae and the first of the family south of the Antarctic Convergence. Campylonotus arntzianus sp. nov. is a shrimp of about 5 cm in total length. Due to similarities in adult morphology, C. arntzianus sp. nov. seems to be closely related to C. capensis, a deep-sea species from the Southern Atlantic Ocean. A simple key for the species identification of the Campylonotidae is provided.
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    The fate of Phaeocystis-derived fatty acids and associated material during a Phaeocystis globosa bloom in the Southern North Sea (2003)
    In:  EPIC3Journal of Sea Research, 50, pp. 271-283
    Details
    Publication Date: 2019-07-17
    Description: Abstract: The fate of a Phaeocystis globosa bloom in the Southern North Sea off Belgium, the Netherlands and Germany in Mai 1995 was investigated during a cruise with RV Belgica. We used fatty acids as biomarkers to follow the fate of Phaeocystis-derived biomass of a Phaeocystis dominated spring bloom. The Phaeocystis bloom showed a fatty acid composition with a characteristic dominance of polyunsaturated C18-fatty acids, which increased in concentration with number of double bonds up to 18:5 (n-3), and high concentrations of 20:5 (n-3) and 22:6 (n-3). In contrast to most previous studies, fatty acid analysis of the mesozooplankton community (mainly calanoid copepods) and meroplankton (Carcinus maenas megalope) demonstrated that Phaeocystis was a major component in the diet of these organisms. Massive accumulations of amorphous grey aggregates, in which Phaeocystis colonies were major components, were dominated by saturated fatty acids and only few of the polyunsaturated C18-fatty acids. A hydrophobic surface slick that covered the water surface during the bloom showed very similar patterns. Foam patches contained few Phaeocystis-typical fatty acids, but increased amounts of diatom-typical compounds such as 16:1 (n-7) and 20:5 (n-3), and 38% fatty alcohols, indicating that wax esters dominated the lipid fraction in the foam with ca. 76% (w/w). The fatty acid compositions of surface sediment showed that no sedimentation of fresh Phaeocystis occurred during the study. The results indicate that diverse processes degrade Phaeocystis -derived organic matter while floating or in suspension, and little evidence for a massive sedimentation of the Phaeocystis bloom.
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  • 86
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    Local population persistence as a pre-condition for large scale dispersal of Idotea metallica (Crustacea: Isopoda) on drifting habitat patches (2003)
    In:  EPIC3Hydrobiologia, 503, pp. 45-48
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    Publication Date: 2019-07-17
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  • 87
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    The meiobenthos of the Molloy Deep (5600 m), Fram Strait, Arctic Ocean (2003)
    In:  EPIC3Vie et milieu-life and environment, 53(1), pp. 1-13
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    Publication Date: 2014-10-07
    Description: The meiobenthos (including foraminiferans) of the Molloy Deep (Fram Strait, Arctic Ocean) was studied along a 15 km transect crossing the deep in NW-SE direction. Four stations between 5416 and 5569 m water depth were sampled during summer months between 1997 and 2001. In comparison with other abyssal and hadal regions of the World Ocean, meiofauna abundances were extremely high, ranging from 2153 to 2968 ind. / 10 cm² (values for the uppermost 5 cm of the sediments). The analysis of biogenic sediment compounds (e.g. chloroplastic pigments, particulate proteins) confirmed comparably high amounts of organic matter in the sediments, presumably favouring increased faunal densities and biomasses. Subsurface peaks in meiobenthic abundances at 1 - 2 cm sediment depth are most probably due to substantial disturbance and/or predation by dense herds of small holothurians (Elpidia glacialis), obviously inhabiting the entire Molloy Deep in very high numbers. Faunal composition of the meiobenthic community of the Molloy Deep was similar to other deep-sea regions. Foraminiferans were the dominant taxa of the total meiobenthos (48.5 - 59.9 %), whereas nematodes dominated the metazoan meiofauna (91.7 - 95.8 %). The total meiofauna of the Molloy Deep consisted of relatively small organisms compared to other/shallower oceanic regions, which could not be explained by reduced food availability to the benthos.
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  • 88
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    Simulating long-term response of tropical wet forests to fragmentation (2003)
    In:  EPIC3Ecosystems, 6(2), pp. 114-128
    Details
    Publication Date: 2019-07-17
    Description: In the coming decades, a large fraction of the tropical rainforests will be fragmented into remnants surrounded by secondaryvegetation, land-used areas, or roads. It is important to developintegrative tools to monitor the evolution of these fragmentedecosystems. We used the individual-oriented and process-basedforest growth simulator Formind to investigate the spatial andtemporal effects of various intensities and patterns offragmentation within a forest landscape, on standing biomass andfunctional diversity. The simulator was calibrated for anold-growth rain forest in French Guiana, South America. We foundthat the standing biomass of forest remnants was reducedsignificantly compared to a similar area of non fragmented forest.When fewer but large remnants were created rather than many smallones, the total loss in biomass and the increase in the abundanceof early successional species were significantly reduced,confirming that edge effects dominate the functioning of forestremnants. We also performed simulations of secondary successionafter the landscape had been abandoned. The simulated recoverytime in those secondary forests depends on both the size ofcleared area and on the spatial pattern of the remnant forests.
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    Beaching of the tunicate Salpa thompsoni at high levels of suspended particulate matter in the Southern Ocean (2003)
    In:  EPIC3Polar Biology, 26, pp. 427-431
    Details
    Publication Date: 2019-07-17
    Description: A mass death event of the pelagic tunicate Salpa thompsoni, which occurred in April 2002 in the Potter Cove, near the Argentinean/German Antarctic station Jubany (62°14S 58°40W), King George Island, South Shetland Islands, is described. Salps appeared on the beach two days after very strong (〉 80 km.h-1) winds were registered, which accumulated particulate material in the inner part of the cove and probably also re-suspended bottom sediments. The sharp increase in particulate matter concentrations in Potter Cove caused clogging (sensu Harbison et al. 1986) of salp mucous filtering nets and likely a combination of clogging, winds and tides caused dying salps to be washed out on the beach. Until further research, it may be postulated that particle concentrations exceeding 20 mgDW.l-1 could be considered as natural threshold concentrations for S. thompsoni in the high Antarctic coastal regions.
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  • 90
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    Impact of hydrodynamics on development and morphology of intertidal seagrasses in the Wadden Sea (2003)
    In:  EPIC3Marine ecology-progress series, 261, pp. 123-134
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    Publication Date: 2016-06-20
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    Genetic variability and molecular phylogeny of Dinophysis species (Dinophyceae) from Norwegian waters inferred from single cell analyzes of ribosomal DNA (2003)
    In:  EPIC3Journal of Phycology39, pp. 395-408
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    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 92
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    Marine metapopulations: a useful concept? (2003)
    In:  EPIC3Helgoland Marine Research, 56, pp. 222-228
    Details
    Publication Date: 2019-07-16
    Description: We discuss the potential and limitations of the metapopulation concept in marine ecology. The usefulness ofthe concept in terrestrial ecology is neither based on its simplicity or generality nor on overwhelming empiricalevidence. The usefulness is in the questions which are asked when the metapopulation concept is applied. Thesequestions address spatial phenomena and processes on different spatial scales. They help in acknowledging that everypopulation, be it terrestrial or marine, has a spatial organization. Understanding this spatial organization is alsoimportant for tackling specific applied problems, i.e. to avoid overexploitation of living marine resources or forconfiguring marine reserves. The 'openness' of coastal populations, whose larvae enter larval pools or which areholoplanktonic, is no reason for not asking the questions implied by the metapopulation concept. For marine ecology,the real problem is to delineate populations, which then may possibly correspond to the 'local populations' ofmetapopulations. Thus, the answer to the question in the title of this paper, whether 'marine metapopulation' is a usefulconcept, is 'yes', if the concept is considered a working hypotheses, if the concept is explicitly defined, and if thequestions linked to the concept are clearly stated. Even if it eventually transpires that only very few marinemetapopulations actually exist, marine ecology would still have gained some important new insights.
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  • 93
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    Responses of marine macroalgae to hydrogen-peroxide stress (2003)
    In:  EPIC3Journal of Experimental Marine Biology and Ecology, 289, pp. 103-121
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    Publication Date: 2019-07-17
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  • 94
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    A Holocene marine pollen record from the northern Yenisei Estuary (southeastern Kara Sea, Siberia) (2003)
    In:  EPIC3Proceedings in Marine Science, 6, pp. 435-457
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    Publication Date: 2019-07-16
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  • 95
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    A case study of the anomalous Arctic sea ice conditions during 1990: Insights from coupled and uncoupled regional climate model simulations (2003)
    In:  EPIC3Journal of geophysical research, Vol. 108, No. D9, 4275 p., ISSN: 0148-0227
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    Publication Date: 2019-07-16
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  • 96
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    Warnsignale aus Nordsee & Wattenmeer (2003)
    In:  EPIC3Wissenschaftliche Auswertungen, Buchreihe, Hamburg, ISBN: 3-00-010166-7
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    Publication Date: 2014-07-08
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  • 97
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    Testaceans (Protozoa: Testacea) in Quaternary permafrost sediments of Bykovsky Peninsula, Arctic Yakutia (2003)
    In:  EPIC3Biology Bulletin, 30(2), pp. 191-206
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    Publication Date: 2019-07-17
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  • 98
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    Substantial advective iron loss diminishes phytoplankton production in the Antarctic Zone (2003)
    In:  EPIC3Global Biogeochemical Cycles, 17(1), 25, pp. 1-9
    Details
    Publication Date: 2019-07-16
    Description: Upon one decade of research it is a well established fact that iron limits photosynthetic CO2 fixation and phytoplankton growth in the Southern Ocean - intense blooms are scarse. However, the input of iron to the Southern Ocean is considerable. An important factor for diminished phytoplankton production refers to the meridional circulation of the Southern Ocean. Intense upwelling of Upper Circumpolar Deep Water (UCDW) causes a large iron flux into the surface layer. However, the main entrainment of upwelled UCDW into the surface layer occurs in autumn and winter which strongly restricts the usefullness of iron supply for phytoplankton due to unfavorable light conditions. Moreover, the meridional transport within the Ekman layer is intense enough to export at least 25% of the iron input away form the Antarctic Zone before it can be used by phytoplankton. This also depresses the potential phytoplankton primary production by at least 25%. Most iron that crosses the Polar Front unused leaves the surface ocean north of the Polar Front because the surface water participates in Antarctic Intermediate Water/Mode Water formation.
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  • 99
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    Meeting Report: Ecology and impact assessment of Phaeocystis blooms in the Eastern Channel and Southern Bight of the North Sea, Oostende, Belgium, 27-29 November, 2002 (2003)
    In:  EPIC3Protist, 154, pp. 173-176
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    Publication Date: 2019-07-17
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    Metabolic plasticity and critical temperatures for aerobic scope in a eurythermal marine invertebrate (Littorina saxatilis, Gastropoda: Littorinidae) from different latitudes (2003)
    In:  EPIC3Journal of experimental biology, 206, pp. 195-207
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    Publication Date: 2019-07-16
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