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  • 2000-2004  (1,616,513)
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  • 1
  • 2
    Monograph available for loan
    Monograph available for loan
    Leningrad : Gidrometeorolog. Izd.
    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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  • 3
    Monograph available for loan
    Monograph available for loan
    Stuttgart : Schweizerbart Science Publishers ; Volume 1, number 1 (1978)-
    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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  • 4
    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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  • 5
    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
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 6
    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
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 7
    Monograph available for loan
    Monograph available for loan
    Madrid : Secc
    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
    Branch Library: PIK Library
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  • 8
    Call number: IASS 15.89494
    Type of Medium: Monograph available for loan
    Pages: Losebl.-Ausg.
    Edition: Stand: Oktober 2010
    ISBN: 9783768501828
    Language: German
    Branch Library: IASS Library
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  • 9
    Monograph available for loan
    Monograph available for loan
    [Edgecumbe, N.Z.] : A. Muller
    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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  • 10
    Monograph available for loan
    Monograph available for loan
    Garmisch-Partenkirchen : Institut für atmosphärische Umweltforschung der Fraunhofer- Gesellschaft
    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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  • 11
    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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  • 12
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physics Letters B 294 (1992), S. 466-478 
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 13
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physics Letters B 317 (1993), S. 474-484 
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 14
    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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  • 15
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    Leipzig ; Nachgewiesen 1994 - 2006
    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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  • 16
    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
    Branch Library: AWI Library
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  • 17
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    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 18
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    Alfred Wegener Institute for Polar and Marine Research
    In:  EPIC3Bremerhaven, Alfred Wegener Institute for Polar and Marine Research
    Publication Date: 2019-07-16
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 19
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    Dating Laboratory, University of Helsinki
    In:  EPIC3Helsinki, Finland, Dating Laboratory, University of Helsinki
    Publication Date: 2019-09-03
    Repository Name: EPIC Alfred Wegener Institut
    Type: PANGAEA Documentation , notRev
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  • 20
    Publication Date: 2017-02-08
    Repository Name: EPIC Alfred Wegener Institut
    Type: Miscellaneous , notRev
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  • 21
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    In:  EPIC33rd Workshop of PULSES/NUMAN: The Importance of Pulses Physical Events for Watershed Sustainability, Louisiana State University, Baton Rouge, Louisiana, USA
    Publication Date: 2017-02-07
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 22
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    In:  EPIC3Continental Shelf Research, 24(6), pp. 721-737, ISSN: 02784343
    Publication Date: 2017-03-06
    Description: This study addresses the decomposition of diatoms in different permeable North Sea sand beds. During three cruises in 2001 to the southern German Bight, the regeneration of nutrients was assessed after the experimental deposition of organic matter corresponding to a typical spring diatom bloom in in situ and on-board chamber experiments. The diatom pulse was followed by a high regeneration of nutrients during the first day: 5–10% d−1 of the added nitrogen was converted to NH4+ and up to 0.67% d−1 of the added biogenic silica was dissolved to Si(OH)4. These results are used to interpret the response of pore water nutrient concentrations in permeable North Sea sands to seasonal nutrient and phytoplankton dynamics in the water column. The rapid advective solute exchange in these permeable sediments reduces the accumulation of regenerated nutrients, and, thus pore water concentrations of Si(OH)4, PO43− and NH4+ decreased with increasing permeability. All sands were characterized by relatively high NO3− concentrations down to 10 cm sediment depth, indicating that the upper sediment layers are oxidized by advective flushing of the bed. Our results demonstrate that biogenic silica and organic matter are rapidly degraded in permeable coastal sands, revealing that these sediments are very active sites of nutrient recycling.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 23
    Publication Date: 2015-05-08
    Description: The Tenasserim lutung Trachypithecus barbei was previously known from museum specimens and field observations only. We discovered a zoo specimen and present the first confirmed evidence for the continued existence of the species since 1967. We describe the cranial pelage and coloration characteristics of this species which were previously unknown. We present first molecular evidence for recognizing T. barbei as a distinct species and for assessing its phylogenetic affinities relative to other members of the genus Trachypithecus. We document the taxonomic history of T. barbei and present a distribution map based on a compilation of all known locality records.
    Keywords: Trachypithecus barbei ; taxonomy ; systematics ; evolution ; genetics
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 24
    Publication Date: 2015-05-08
    Description: This paper reviews the quantitative morphological variation published for Sagitta setosa Müller, 1847 and two other species described within the S. serosa-complex, viz., S. euxina Moltschanoff, 1909 from the Black Sea, and S. batava Biersteker & Van der Spoel, 1966 from the Scheldt Estuary (Netherlands). Data on total (body) length, caudal length, numbers of teeth and hooks, ovary length, and dimensions of fins are compared between these three taxa. Additionally, samples from the North Sea, Mediterranean, and Black Sea are compared to look for geographic differences. Specimens from the Mediterranean were smallest with relatively long caudal segments, and few teeth and hooks, whereas specimens from the Black Sea were largest with relatively short caudal segments and many teeth and hooks. Specimens from the North Sea were intermediate with regards to these characters, but ranges overlapped and there were no obvious differences in allometry. These differences may be ecophenotypic, as the warm and salty Mediterranean Sea and cool and brackish Black Sea are at opposite ends of the environmental spectrum. The dimensions related to the fins showed clearer distinction between samples from different geographical areas, and slight differences in allometry. However, few data were available and little is known about the variance within each geographical area. We found more variation in quantitative characters within S. setosa from different parts of its range than between S. setosa and either S. hatava, or S. euxina. Sagitta batava conformed to S. setosa in terms of all the morphological characters considered. The data for S. setosa derived from Biersteker & Van der Spoel (1966) were atypical and were found to be based on misidentifications of S. elegans. Therefore, we concluded that S. batava cannot be considered a separate taxon. For S. euxina, the data were inconclusive. Quantitative data completely overlapped between S. setosa from the Black Sea and S. euxina, but few data of S. setosa from the Black Sea were available. Because samples were either composed entirely of S. setosa or S. euxina (depending on sampling season and depth) and there was a large variation in body lengths and relative ovary lengths, we consider it possible that these samples represent seasonal variants of one and the same species.
    Keywords: Sagitta setosa ; Chaetognatha ; morphological variation ; European seas
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 25
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    In:  Contributions to Zoology (1383-4517) vol.73 (2004) nr.3 p.253
    Publication Date: 2015-05-08
    Description: Review of: Systema Porifera, edited by J. N. A. Hooper and R. W. M. van Soest. Kluwer Academic Publ., Dordrecht, Netherlands, 2002, 1708 pp., ISBN 0-306-47260-0 This seems to be a time for the publication of big compendia. One would have thought that in this age of the internet one would be turning to convenient web-sites to find the latest catalogues of data and information about biodiversity of animal groups. Indeed, such do exist, and many of them are remarkably detailed and informative. Nevertheless, there has been a steady stream lately of traditional hardcopy volumes presenting systematic and taxonomic overviews of various groups of animals. This handsome two-volume set is amongst the latest example of these kinds of books to appear.
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 26
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    In:  Contributions to Zoology (1383-4517) vol.73 (2004) nr.4 p.255
    Publication Date: 2015-05-08
    Description: Parasitoid assemblages infesting Yponomeuta species in the Netherlands were investigated. Parasitoid species richness and community composition were related to host species, habitat, temporal and spatial variation. Both community structure and species richness did not differ among habitats. There was no significant difference in species richness between years (1994 and 1995) but there was a significant difference in community composition. Community composition and species richness both differed among host species, although this latter result was solely due to the host species Y. evonymellus. There was no significant relationship between community similarity and distance. These results indicate that the parasitoids of the moth genus Yponomeuta in the Netherlands appear to form a spatially stable, but temporally variable community. Most of the variation in community structure was, however, related to the host species. The marked difference in parasitoid species richness and community composition of Y. evonymellus when compared to the other species warrants further study.
    Keywords: ANOSIM ; beta diversity ; community composition ; distance ; species richness
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 27
    Publication Date: 2015-05-08
    Description: In this second of a two-part series, carcinization in the Anomura has been reviewed from early juvenile, megalopal, and larval perspectives. Data from megalopal and early juvenile development in ten genera of the Lithodidae have provided unequivocal evidence that earlier hypotheses regarding evolution of the king crab pleon were erroneous. A pattern of sundering, and decalcification has been traced from the megalopal stage through several early crabs stages in species of Lithodes and Paralomis, with supplemental evidence from species in eight other genera. Of major significance has been the attention directed to the marginal plates of the second pleomere, which when separated in lithodids are not homologous with the adult so-called “marginal plates” of the following three tergites. Auxiliary megalopal and early juvenile lithodid data, as well as equivalent data from other paguroids, support the evolutionary direction indicated by lithodid pleonal plate development. Therefore, while carcinization, or development of a crab-like body form, has occurred in the Lithodidae, it has not proceeded from a hermit crab ancestor. Rather the data suggest the reverse, thus effectively refuting the “hermit to king” myth. Brief reviews of data available from the Lomisidae and Porcellanidae support the Proposition of independent anomuran carcinization events in these taxa as well. Results of cladistic analysis of megalopal and juvenile data, although somewhat unconventional, do not support the claim of a sister-group relation of the lithodid genera Lithodes and Paralithodes with the pagurid genus Pagurus. Attempts to subject larval phase data to similar analysis were thwarted by the tendency in paguroids, including lithodids, for lecithotrophic development. Additionally, presumed initial and terminal stage deletions disallow the ontogenetic stage homologies required for meaningful phylogenetic results.
    Keywords: Carcinization ; Anomura ; Paguroidea ; Lithodidae ; Paguridae ; Lomisidae ; Porcellanidae ; larval ; megalopal and early juvenile morphology ; pleonal tergites
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 28
    Publication Date: 2015-05-08
    Description: Bidder’s organ has been cited as a structure present only in males of the toad family Bufonidae, and is used as a systematic characteristic. In this study, we examined females of Bufo ictericus in order to ascertain whether this structure also occurs in females. Macroscopic observations and light microscopy technique for paraffin embedding were performed. This study reveals that females of Bufo ictericus can have a Bidder’s organ with typical morphology, and in close spatial relationship with the ovary. This suggests that the Bidder’s organ is not an exclusive structure for male toads, but that it may also occur in active females.
    Keywords: Morphology ; Bidder’s organ ; female ; Bufonidae ; Bufo ictericus
    Repository Name: National Museum of Natural History, Netherlands
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  • 29
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.425
    Publication Date: 2015-03-06
    Description: Annesijoa is an endemic monotypic genus from New Guinea with as single species A. novoguineensis. Elateriospermum is also monotypic (E. tapos) and found in West Malesia. The South American genus Hevea comprises about 10 species. One species (H. brasiliensis) is presently cultivated worldwide in plantations for its rubber and has become one of the major economic products of SE Asia. Two other species, H. guianensis and H. pauciflora are sometimes present in Malesian botanical gardens.
    Keywords: Euphorbiaceae ; Annesijoa ; Elateriospermum ; Hevea ; Malesia
    Repository Name: National Museum of Natural History, Netherlands
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  • 30
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.351
    Publication Date: 2015-03-06
    Description: Three new species of the Southeast Asian orchid genus Dendrochilum Blume are described. All three seem to belong to the phenetically defined subgenus Platyclinis (Benth.) Pfitzer. As indicated by the name, D. celebesense H.A. Pedersen & Gravend. originates from Sulawesi. The geographic origins of D. coccineum H.A. Pedersen & Gravend. and D. warrenii H.A. Pedersen & Gravend., on the other hand, are unknown, but parsimony analyses of sequences of the plastid accD-psaI intergenic spacer and nuclear ribosomal ITS1-5.8S-ITS2 region and morphological affinities suggest they should both be counted as members of the Philippine flora.
    Keywords: Dendrochilum ; accD-psaI ; nrITS ; Philippines ; Sulawesi ; phylogeny ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
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  • 31
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.1 p.1
    Publication Date: 2015-06-05
    Repository Name: National Museum of Natural History, Netherlands
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  • 32
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.499
    Publication Date: 2015-03-06
    Repository Name: National Museum of Natural History, Netherlands
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  • 33
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.441
    Publication Date: 2015-03-06
    Description: A new monotypic genus from Cambodia is described. The genus is defined by a unique combination of characters and has distinct pollen features. The only species is Khmeriosicyos harmandii W.J. de Wilde & Duyfjes.
    Keywords: Cucurbitaceae ; Khmeriosicyos ; new genus ; pollen ; SE Asia
    Repository Name: National Museum of Natural History, Netherlands
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  • 34
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.407
    Publication Date: 2015-03-06
    Description: Pimelodendron comprises five species. Four species were already known (P. amboinicum, P. griffithianum, P. macrocarpum, P. zoanthogyne). One Sumatran species is to separate in the rest of Pimelodendron without naming it (Pimelodendron spec. nov.?). One name is excluded (P. dispersum = Actephila excelsa var. javanica), while P. naumannianum is regarded as a synonym of P. amboinicum.
    Keywords: Euphorbiaceae ; Pimelodendron ; Malesia
    Repository Name: National Museum of Natural History, Netherlands
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  • 35
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    Unknown
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.350
    Publication Date: 2015-03-06
    Description: Confusion concerning the validation of Miliusa vidalii J. Sinclair is rectified.
    Keywords: Annonaceae ; Miliusa ; Miliusa vidalii ; Australia ; Flora Malesiana
    Repository Name: National Museum of Natural History, Netherlands
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  • 36
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.451
    Publication Date: 2015-03-06
    Description: Afrothismia foertheriana, a new species of Burmanniaceae (tribe: Thismieae) from the peripheral zone of the Onge Forest Reserve in Cameroon’s Southwest Province is described and illustrated. The papillose, multicellular floral trichomes, the tepal’s erose margins, the small, zygomorphic perianth mouth and the dull purplish brown coloration give A. foertheriana a distinctive appearance within the genus. The species is here assessed as being critically endangered.
    Keywords: Burmanniaceae ; Thismieae ; Afrothismia foertheriana ; Cameroon ; conservation ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
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  • 37
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.406
    Publication Date: 2015-03-06
    Repository Name: National Museum of Natural History, Netherlands
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  • 38
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.1 p.101
    Publication Date: 2015-03-06
    Description: The genus Ochrosia Juss. is revised in the Malesian region. Thirteen species are recognized as Ochrosia, including one new species, O. basistamina. Seven species previously placed in Neisosperma Raf. are now included in Ochrosia. The names Ochrosia section Echinocaryon F. Muell. and Ochrosia section Ochrosia are applied for the fibrous-fruited species and cavity-fruited species of Ochrosia, respectively. Neisosperma Raf. is reduced to Ochrosia section Echinocaryon F. Muell. Separate keys are given for the species of both sections.
    Keywords: Neisosperma ; Ochrosia ; Ochrosia section Echinocaryon ; Ochrosia section Ochrosia ; Malesia ; taxonomic revision
    Repository Name: National Museum of Natural History, Netherlands
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  • 39
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    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.1 p.3
    Publication Date: 2015-03-06
    Repository Name: National Museum of Natural History, Netherlands
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  • 40
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    In:  Zoologische Mededelingen (00240672) vol.78, 1-16 (2004) p.265
    Publication Date: 2007-01-18
    Description: Despite the abundance and ecological importance of octocorals in Alaskan waters, most of the species in this assemblage remain unidentified and/or undescribed. One of the largest and most abundant species from the Aleutian Islands found at depths ranging between 125 and 512 m is a new and very unusual gorgonian coral. It has stout upright colonies that are laterally branched, with thick, more or less clavate terminal branches. Its major distinguishing characteristic is its possession of tiny sclerites with stubby double heads, which occur in the outermost coenenchyme. Another significant character is its oval capstans with elaborate ornamentation. The gorgonian is described as Alaskagorgia aleutiana new genus and species (Cnidaria: Octocorallia: Holaxonia: Plexauridae). It is described and assigned to Plexauridae because of the affinity of DNA sequences (1337 bp mtDNA: ND2 and MSH1) of A. aleutiana with other plexaurid corals, even though the predominant coenenchymal sclerites are somewhat smaller and different than is usual in plexaurid genera.
    Keywords: Gorgonian coral ; Alaskagorgia aleutiana ; molecular systematics ; Octocorallia ; Plexauridae ; Gorgoniidae ; ND2, MSH1, mtDNA. ; 42.79
    Repository Name: National Museum of Natural History, Netherlands
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  • 41
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    In:  Zoologische Mededelingen (00240672) vol.78, 1-16 (2004) p.241
    Publication Date: 2015-06-03
    Description: A new species of the genus Allobracon Gahan, 1915, from Brazil is described and illustrated. It is the first green species of the genus and of the subfamily known. A key to the species is added.
    Keywords: Allobracon ; Hymenoptera ; Braconidae ; Hormiinae ; Brazil ; neotropical ; new species ; key ; green pigmentation ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
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  • 42
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    In:  Zoologische Mededelingen (00240672) vol.78, 1-16 (2004) p.181
    Publication Date: 2007-01-18
    Description: A supplement to the “Revision of the genus Paratropus Gerstaecker” (Kanaar, 1997) is given. Additional faunistic data are presented. The following four new species are described and figured: P. angulifrons (Malaysia: Sabah), P. strigosus (Cameroon, Ghana), P. tenuis (Indonesia: Sumatra) and P. transvalensis (South Africa: Transvaal).
    Keywords: Coleoptera ; Histeridae ; Paratropus ; Termitophiles ; Myrmecophiles ; Africa ; Oriental region ; new species ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
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  • 43
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    In:  Zoologische Mededelingen (00240672) vol.78, 1-16 (2004) p.123
    Publication Date: 2007-01-18
    Description: A new species of the genus Phaenocarpa Foerster (Hymenoptera: Braconidae: Alysiinae: Alysiini) from the Atlantic rainforest in Brazil is described and illustrated.
    Keywords: Braconidae ; Alysiinae ; Alysiini ; Phaenocarpa ; Neotropical ; Brazil ; atlantic forest ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
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  • 44
    Publication Date: 2007-01-22
    Description: The type specimens present in the National Museum of Natural History, Leiden, are listed for the Passerine families Eurylaimidae up to and including the Eopsaltriidae (following the sequence in Peters’s Check-list of the Birds of the World).
    Keywords: Aves ; passerines ; types ; Nationaal Natuurhistorisch Museum ; Rijksmuseum van Natuurlijke Historie ; Bernstein ; Bonaparte ; Büttikofer ; Finsch ; Forsten ; Hoedt ; Junge ; Kuhl ; Mees ; Müller ; Pel ; Pollen ; Schlegel ; Schwaner ; Temminck ; van Dam ; van Hasselt ; van Oort ; von Rosenberg ; von Siebold ; 42.83
    Repository Name: National Museum of Natural History, Netherlands
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  • 45
    Publication Date: 2007-01-19
    Description: This is an inventory of the Mesozoic and Cenozoic type material in the original palaeobotanical collections of the Nationaal Natuurhistorisch Museum, Leiden, The Netherlands. In total 60 holotypes are documented and one is noted as missing from the collections. One new combination is made (Cinnamomum javanicum (Goeppert) nov. comb.) and several species are considered to be conspecific.
    Keywords: Plants ; fossils ; holotypes ; Mesozoic ; Cenozoic ; Nationaal Natuurhistorisch Museum ; 38.21
    Repository Name: National Museum of Natural History, Netherlands
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  • 46
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    In:  Scripta Geologica (03757587) vol.127 (2004) p.341
    Publication Date: 2007-01-19
    Description: Jamaica, the third largest of the Greater Antillean islands, exposes various lithological units that are dominated by Cenozoic carbonate rocks including those of the mid-Cenozoic White Limestone Group. This Group is comprised of six formations, the Troy, Swanswick, Somerset, Moneague, Montpelier and Pelleu Island formations. An uncommon but moderately diverse, poorly to moderately preserved softsediment ichnofauna is described herein from several of these, namely the Moneague, Montpelier and Pelleu Island formations, which have yielded 15 ichnogenera represented by 27 ichnospecies. These are: Bergaueria hemispherica? Crimes, Legg, Marcos & Arboleya; Chondrites furcatus Sternberg; Chondrites isp.; Circulichnus montanus Vialov; Dactyloidites ottoi (Geinitz); Dactyloidites peniculus D’Alessandro & Bromley; Diplocraterion isp. cf. D. parallelum Torell; Glockerichnus parvula (Ksia˛z · kiewicz); Helminthopsis hieroglyphica Wetzel & Bromley; Ophiomorpha nodosa Lundgren; Palaeophycus herberti (Saporta); Palaeophycus tubularis Hall; Palaeophycus isp.; Planolites beverleyensis (Billings); Planolites montanus Richter; Planolites isp.; Schaubcylindrichnus coronus Frey & Howard; Scolicia prisca Quatrefages; Scolicia strozzii Savi & Meneghini; Taenidium cameronensis (Brady); Taenidium serpentinum Heer; cf. Taenidium barretti (Bradshaw); Thalassinoides horizontalis Myrow; Thalassinoides paradoxicus (Woodward); Thalassinoides isp.; Trichichnus linearis Frey; and Trichichnus simplex Fillion & Pickerill. Various processes such as dolomitization, lack of bedding plane surfaces, lack of contrasting lithologies precluding toponomic preservation, case hardening and chertification may, individually or in combination, be responsible for the variable ichnofaunal diversity within and between the various formations of the White Limestone Group.
    Keywords: systematics ; burrows ; West Indies ; Jamaica ; Cenozoic ; Eocene-Miocene ; 38.22
    Repository Name: National Museum of Natural History, Netherlands
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  • 47
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    In:  Scripta Geologica (03757587) vol.127 (2004) p.71
    Publication Date: 2007-01-19
    Description: Rugose corals reinvestigated herein constitute the main part of the collection described by de Groot (1963). The taxonomy proposed herein differs in several instances from that accepted originally by de Groot. Some changes, such as Petalaxis for Lithostrotionella and Calophyllum instead of Polycoelia, were already introduced in de Groot’s unpublished catalogue. Others were introduced in order to match the recent advances in rugose coral systematics. Most systematic changes were based on new microstructural, diagenetic and hystero-ontogenetic studies. These are described in detail for individual species and briefly discussed in the concluding considerations. Trabecular microstructure of septa and its diagenetic alteration was documented for most species. Presence of two kinds of intercorallite walls (partition and dividing walls) was documented on the basis of their difference in microstructure. This was especially important for the genus Petalaxis, allowing proof of a distinction between species representing its nominative subgenus and that distinguished by de Groot as Hillia. A new name Degrootia was proposed for Hillia, which is preoccupied by a lepidopteran. Two genera, one new (Arctocorallium gen. nov.), represented by two species, were transferred to the Calyxcorallia (Dividocorallia), the order and subclass not distinguished by de Groot. Both those species were investigated and documented in particular detail, especially their hystero-ontogeny. The restudied material allowed proof of a distinction between the Calyxcorallia and the Rugosa in the insertion of major septa. Also, an uncertain status of minor-like septa that may replace the major septa was demonstrated. Both those determinations are based on the hystero-ontogeny.
    Keywords: Rugosa ; Dividocorallia ; Bashkirian-Moscovian ; Spain ; 38.22 ; 42.79
    Repository Name: National Museum of Natural History, Netherlands
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  • 48
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    In:  Scripta Geologica (03757587) vol.127 (2004) p.1
    Publication Date: 2007-01-19
    Description: Material from three pieces of rock from Ramsåsa, site E, was divided into size fractions 0.106, 0.212, 0.355, 0.425 and 0.5 mm. Larger sizes were absent. The three assemblages were examined and compared with each other, also per fraction, and with residue samples from site E. The latter are proportionately not representative of the faunas of which they must have been part, specimens measuring 0.5 mm or more. The residue labels refer to Ørvig and his student Peyel. The results of the comparison between the assemblages from the rocks and from the residues are hardly complementary. Thelodont scales were obtained almost exclusively from the pieces of rock; acanthodian ‘modified trunk’ scales, spines and jawbones and rare birkeniid remains were restricted to the stored residues, which also yielded a variety of osteostracan (‘hemicyclaspid’ and ‘zenaspid’) armour fragments. A late Ludlow age (within the T. sculptilis biozone) is suggested for the rock samples on the basis of the fish assemblages alone. Since the Ørvig and Peyel residue materials contained T. sculptilis scales, they are not older than the T. sculptilis zone (Upper Ludlow- Lower Pridoli).
    Keywords: osteostracans ; anaspids ; thelodonts ; acanthodians ; Whitcliffian ; Sweden ; 38.22 ; 42.81
    Repository Name: National Museum of Natural History, Netherlands
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  • 49
    Publication Date: 2007-01-18
    Description: On the basis of new and published palaeontological and stratigraphical data, the qualitative and quantitative variations in the Barremian-early Albian ammonite fauna of Colombia have been documented and analyzed. The position adopted here is that in the early Barremian the Andean Province became replaced by the Caribbean Subprovince in Colombia. The Caribbean Subprovince became separated as an independent unit from the Andean Province on the generic level (Buergliceras, Pedioceras), but especially on the species level. In the middle/upper Aptian many new endemic genera and subgenera appeared; Juandurhamiceras, Neodeshayesites, Laqueoceras, Zambranoites, Riedelites and Pseudoptychoceras. Besides, many endemic middle Aptian species of other, non-endemic genera appeared. Beginning from the middle Aptian the Caribbean area was a separate biogeographic enitity with the rank of Province; the Colombian region is considered to be the core area of the Caribbean Province.
    Keywords: palaeobiogeography ; Early Cretaceous ; ammonites ; Colombia ; 38.22 ; 42.73
    Repository Name: National Museum of Natural History, Netherlands
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  • 50
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    In:  Scripta Geologica (03757587) vol.128 (2004) p.183
    Publication Date: 2007-01-18
    Description: Forty seven species (among them fourteen new that are listed below) of the following ammonite genera of the families Deshayesitidae Stoyanow, Oppeliidae Douvillé, Desmoceratidae Zittel, and Silesitidae Hyatt are described. Neodeshayesites includes the new species N. buergli, N. striatus, N. biplicatus, N. longicostatus, N. multicostatus, N. euglyphoides and N. tuberculatus. Dufrenoyia includes the new species D. renzi. Pseudohaploceras includes the new species P. gerhardti, P. yucaense, P.? yeseraense and P. simile. Melchiorites includes the new species M. colombianus. Zuercherella includes the new species Z. etayosernai. Other species belong to the genera Juandurhamiceras, Aconeceras, Pseudosaynella, Valdedorsella, Puzosia, Carloscaceresiceras, Kennicottia and Miyakoceras.
    Keywords: ammonites ; Barremian ; Aptian ; Albian ; Colombia ; 38.22 ; 42.73
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  • 51
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    In:  Scripta Geologica (03757587) vol.128 (2004) p.182
    Publication Date: 2007-01-18
    Description: Thirty seven species and subspecies of ammonites of the families Ancyloceratidae Gill, 1871, and Heteroceratidae Spath, 1922, are described. The following new taxa are described; Crioceratites (Paracrioceras) leyvaensis, C. (P.) royogomezi, C. (P.) cabreraensis, Pedioceras multicostatum, Pseudocrioceras guanense, Kutatissites creutzbergi, K. densecostatus compactus, K. etayosernai, K. grandis, K.? galanensis, Ammonitoceras galanense, A. giganteum, Hamiticeras ventrotuberculatum, H. longum, Hemihoplites (Matheronites) ridzewskyi sachicaensis, Colchidites riosuarezi, C. pseudovulanensis, C. guanensis and C. striatosulcatus. Moreover, one new genus, Laqueoceras gen. nov., with the type species L. laqueus sp. nov., is proposed.
    Keywords: heteromorphic ammonites ; Barremian ; Aptian ; Colombia ; 38.22 ; 42.73
    Repository Name: National Museum of Natural History, Netherlands
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  • 52
    Publication Date: 2007-01-18
    Description: The genus Mama Belokobylskij, 2000 (Braconidae; Euphorinae) is re-assessed and the type species is compared with three similar species: Microctonus cephalicus Provancher, 1886, Microctonus reclinator Ruthe, 1856, and Euphorus spiniscapus Muesebeck, 1936. The results are discussed in relation to the use of taxa based on one specimen (“monotype taxa”). Problems concerning our knowledge of important groups of Euphorinae are outlined. The context of the peculiarly tangled taxonomical situation, which this paper deals with, is considered to be widespread in parasitoid taxonomy, and should be borne in mind in current studies of parasitoid biodiversity assessment.
    Keywords: Mama Belokobylskij ; Microctonus cephalicus Provancher ; Euphorus spiniscapus Muesebeck ; Microctonus reclinator Ruthe ; monotypic genera ; monotype taxa ; biodiversity ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
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  • 53
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    In:  Zoologische Mededelingen (00240672) vol.78, 18-28 (2004) p.417
    Publication Date: 2007-01-18
    Description: The history and current taxonomic status of 62 nominal taxa are revised that have been associated in the literature with the subgenus Tholachatina Bequaert, 1950, of genus Archachatina Albers, 1850, and the genus Cochlitoma Férussac, 1821, in the land snail family Achatinidae Swainson, 1840. Tangible, reliable characters have been found in the detailed features of the reproductive anatomy in this family. The results of comparative anatomical study convincingly reflect phylogeny in contrast to the comparative study of only the shell characters. This latter more strongly reflects the effects of the intrinsically variable environment over time. In the present study, both sets of characters are needed to refine identification. Change, and therefore speciation, is shown in the reproductive system through anatomical differences that may develop in the functional interrelationships of the two integral reproductive systems of hermaphroditism. Limited adjustment to anatomical change over time has established for each genus a typical, characteristic reproductive anatomical pattern or configuration. Because this pattern has a basically high degree of physical stability within a population, it becomes an identifying character for the genus, and more restrictedly so for the species. Two new genera (Bruggenina and Brownisca) and two new species (Cochlitoma kilburni and C. wigleyi) are described on the basis of distinctive anatomical characters. The genus Cochlitoma sensu Pilsbry (1904) is resurrected and redescribed. It contains most of the southern African achatinid species. Bequaert’s subgenus Tholachatina (1950) of West African genus Archachatina is invalid. The genus Archachatina Albers, 1850, has no endemic species in southern Africa.
    Keywords: Mollusca ; Gastropoda ; Pulmonata ; Achatinidae ; biogeography ; taxonomy ; genital anatomy ; Southern Africa ; East Africa ; 42.73
    Repository Name: National Museum of Natural History, Netherlands
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  • 54
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    In:  Scripta Geologica (03757587) vol.128 (2004) p.3
    Publication Date: 2007-01-18
    Description: The biostratigraphy and sequence stratigraphy of the Barremian deposits, and the biostratigraphy of the Aptian deposits in the Villa de Leyva area in Colombia are briefly described.
    Keywords: stratigraphy ; Barremian ; Aptian ; depositional sequences ; Colombia ; 38.16
    Repository Name: National Museum of Natural History, Netherlands
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  • 55
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    In:  Zoologische Mededelingen (00240672) vol.78, 18-28 (2004) p.337
    Publication Date: 2007-01-18
    Description: Two new species of the genus Pambolus Haliday, 1836, (P. leponcei spec. nov., and P. pilcomayensis spec. nov.; Braconidae: Pambolinae) from Argentina are described and illustrated.
    Keywords: Braconidae ; Pambolinae ; Pambolus ; Neotropical ; Argentina ; new species ; partial key ; 42.75
    Repository Name: National Museum of Natural History, Netherlands
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  • 56
    Publication Date: 2007-01-18
    Description: Actiniid sea anemones possess few characteristics of taxonomic value, which makes columnar outgrowths one of the most important features for systematic work. There are two species of actiniid sea anemones known from Chile and southern Peru that exhibit a column densely covered with non-adhesive vesicles: Phymactis papillosa (Lesson, 1830) (= Phymactis clematis) and Phymanthea pluvia (Drayton in Dana, 1846). Hereby both are re-described in detail. The re-descriptions are based on observations of about 100 living animals in their habitat and in aquaria and on the examination of 21 specimens of P. papillosa and seven specimens of P. pluvia collected in Chile between 1995 and 2003. In Chile, specimens of both species occur in tide-pools, on vertical and overhanging rock-walls in the intertidal zone and in shallow water down to depths of 16 m. Large size, numerous short tentacles, and acrorhagi characterize both species. Phymactis papillosa is a widely distributed species: its occurrence is confirmed from Playa Tantalean, Peninsula Bayovar, Peru (05°48’15’’S, 81°04’99’’W), to the Archipelago de los Chonos (44°24’S; 73°34’W), south Chile, for the Gulf of California (24°08’N; 110°15’W) and for the Pacific coast of Mexico (23°26’N; 110°15’W) as well as for some Pacific Islands. Phymactis papillosa occurs solitarily and in clonal aggregations and exhibits four distinct colour varieties: var. rubra, var. viridis, var. cyanea and var. fusca as well as some mixed morphs. Phymanthea pluvia can be found between Caleta Yasila, Paita, Peru (05°07’38’’S, 81°10’07’’W), and the region of Valparaíso, central Chile (33°02’S, 71°38’W). Specimens of P. pluvia always have a hardly varying orange colour; the apexes of its vesicles are whitish. Morphologically both species are quite similar; besides the colour they can be distinguished by the histological structure of the vesicles and by the numerous rod-like basitrichs in the acrorhagi of P. papillosa. Structure and histology of the vesicles of both species are described in detail and possible functions and the taxonomic value of vesicles are discussed. The distinctive characters of the genera Phymactis Milne Edwards 1857, Bunodosoma Verrill, 1899, and Phymanthea Carlgren, 1959 are given. Valid as well as doubtful species of all three genera are listed.
    Keywords: Actiniaria ; Actiniidae ; Phymactis papillosa ; Phymactis clematis ; Phymanthea pluvia ; Bunodosoma ; non-adhesive vesicles ; Chile ; Peru ; Mexico ; benthos ; 42.79
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  • 57
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    In:  Zoologische Mededelingen (00240672) vol.78, 18-28 (2004) p.331
    Publication Date: 2007-01-18
    Description: Bitomoides gen. nov. (type species: Bitomus latus Papp, 1999) is described and illustrated. In addition Phaedrotoma recondes spec. nov. and Chelonus lukasi nom. nov. are validated.
    Keywords: Hymenoptera ; Braconidae ; Opiinae ; Bitomoides ; Orientopius ; Opius ; Phaedrotoma ; Microchelonus ; Chelonus ; Palaearctic ; Europe ; 42.75
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  • 58
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    In:  EPIC3in Bamber. J.L. and A.J. Payne (eds.): Mass balance of the cryosphere: observations and modelling of contemporary and future changes, Cambridge University Press (Cambridge), pp. 491-523
    Publication Date: 2014-04-15
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
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  • 59
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    In:  EPIC3The South Atlantic in the Late Quaternary - Reconstruction of Material Budget and Current systems. Wefer, G., Ratmeyer, V. and Meinecke, G. (Eds.), Springer-Verlag : Berlin, Heidelberg, New York, Tokyo:, pp. 47-63, ISBN: 3-540-21028-8
    Publication Date: 2016-11-25
    Description: The natural uranium decay series provide a suite of tracers to study transport processes in the ocean. We have used nuclides of the particle-reactive elements Th, Pa, Pb and Po for studies of particle flux in the Southern Ocean, whereas isotopes of the elements Ra and Ac served as tracers for the transport of water masses. Here we summarize the specific aspects of the behaviour of these nuclides in the Southern Ocean and give some examples of their application. We review the important influence of exchange between ocean basins by advection and upwelling on the long-lived nuclides. We show how the distribution of 234Th in surface waters across the ACC represents the export production, whereas in the benthic nepheloid layer this tracer is used to illustrate how the resuspension regime in the ACC is linked to the position of the oceanographic fronts.
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  • 60
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 61
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    In:  EPIC3The Climate in Historical Times: Towards a synthesis of Holocene proxy data and climate models, pp. 229-244
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 62
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    In:  EPIC3The climate in historical times : towards a synthesis of holocene proxy data and climate models / [GKSS-Forschungszentrum]. H.Fischer, T.Kumke, G. Lohmann, G. Flöser, H. Miller, H.v.Storch, J.F.W. Negendank (eds.) Berlin [u.a.] : Springer, 57-75 (GKSS Sch, ISBN: 3-540-20601-9
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
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    In:  EPIC3In H. Fischer, T. Kumke, G. Lohmann, G. Flöser, H. Miller, H. von Storch und J. F. W. Negendank (Eds.): The Climate in Historical Times: Towards a synthesis of Holocene proxy data and climate models, Springer Verlag, Berlin - Heidelberg - New York, pp. 365-382, ISBN: 3-540-20601-9
    Publication Date: 2019-07-16
    Repository Name: EPIC Alfred Wegener Institut
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  • 64
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
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  • 65
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    In:  EPIC3Geochimica et cosmochimica acta, 68(7), pp. 1489-1501, ISSN: 0016-7037
    Publication Date: 2019-07-17
    Description: Here we present the results of experiments concerning the adsorption of Thorium (Th) and Protactinium (Pa) on different particle types. Particle types used were smectite (as a representative of clay), biogenic opal, CaCO3 and MnO2. Additionally one sample was run without particles added. Experiments were performed with recently sampled seawater from three regionally different locations, which had been 0.2 µm filtrated previous to our experiments. Herewith we made sure that the seawater kept its natural composition in dissolved organic matter (DOM), which has been shown to play an important role in the transfer of Th to the particulate phase.In the control run with no particles added, in all three cases a significant amount of Th was observed in the particulate phase. Obviously, spontaneously formed particles as described by Chin et al. (1998) were responsible for Th found in the particulate phase. The adsorption of Th on clay strongly resembled that of the spontaneously formed particles, but with increased adsorption efficiency. In agreement with observations from terrestrial systems, we conclude that clay minerals may serve as a carrier for organic carbon also in the ocean. The relationship between so-called mineral ballast and carbon export (Armstrong and Jahnke 2001) may be closely linked to this observation.The obtained Th/Pa fractionation factors are only for smectite and MnO2 quite constant. For smectite, in all three water types a fractionation factor of about 6 is obtained. For MnO2, the fractionation factor scatters around unity. On biogenic opal, mostly fractionation factors of about two to three were observed.Our results have large implications for the interpretation of Th and Pa data from natural samples. They show up differences in the scavenging behaviour of particles depending on the composition of seawater in the phase 〈0.2 µm, which varies with its provenance.
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  • 66
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    In:  EPIC3The South Atlantic in the Late Quaternary: Reconstruction of Material Budget and Current Systems, edited by G. Wefer, S. Mulitza, and V. Ratmeyer, Springer, Berlin Heidelberg
    Publication Date: 2019-07-17
    Description: We tested the applicability of the carbon isotopic composition of C37:2 alkenones (delta13C37:2) as a proxy for dissolved carbon dioxide CO2(aq) in oceanic surface waters. For this purpose we determined delta13C37:2 in suspended particulate organic matter (POM) and surface sediments from the South Atlantic. In opposite of what would be expected from a diffusive CO2 uptake model for marine algae we observed a positive correlation between 1/[CO2(aq)] and the isotopic fractionation (epsilon p) calculated from delta13C37:2. This clearly demonstrates that CO2(aq) is not the primary factor controlling epsilon p at the sites studied. On the other hand we found a negative correlation between epsilon p and the phosphate concentration in the surface waters (0-10 m) supporting the assumption of Bidigare et al. (1997) that epsilon p is primarily related to nutrient-limited algal growth rather than to [CO2(aq)]. Reconstructing past CO2(aq) levels from delta13C37:2 thus requires additional proxy information in order to correct for the influence of haptophyte growth on the isotopic fractionation. In the eastern Angola Basin, we previously used delta15N of bulk organic matter as proxy for nutrient-limited growth rates. As an alternative the Sr/Ca ratio of coccoliths has been recently suggested as growth-rate proxy which should be tested in future studies.
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    Publication Date: 2019-07-16
    Repository Name: EPIC Alfred Wegener Institut
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