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  • Articles  (2,444,903)
  • 2000-2004  (1,494,346)
  • 1980-1984  (950,557)
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  • 1
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    Late Saalian and Eemian palaeoenvironmental history of the Bol'shoy Lyakhovsky Island (Laptev Sea region, Arctic Siberia) (2004)
    Wiley
    In:  EPIC3Boreas, Wiley, 33(4), pp. 319-348, ISSN: 0300-9483
    Details
    Publication Date: 2024-04-25
    Description: Palaeoenvironmental records from permafrost sequences complemented by infrared stimulated luminescence (IRSL) and 230Th/U dates from Bol'shoy Lyakhovsky Island (73°20′N, 141°30′E) document the environmental history in the region for at least the past 200 ka. Pollen spectra and insect fauna indicate that relatively wet grasssedge tundra habitats dominated during an interstadial c. 200-170 ka BP. Summers were rather warm and wet, while stable isotopes reflect severe winter conditions. The pollen spectra reflect sparser grass-sedge vegetation during a Taz (Late Saalian) stage, c. 170-130 ka BP, with environmental conditions much more severe compared with the previous interstadial. Open Poaceae and Artemisia plant associations dominated vegetation at the beginning of the Kazantsevo (Eemian) c. 130 ka BP. Some shrubs (Alnus fruticosa, Salix, Betula nana) grew in more protected and wetter places as well. The climate was relatively warm during this time, resulting in the melting of Saalian ice wedges. Later, during the interglacial optimum, shrub tundra with Alnus fruticosa and Betula nana s.l. dominated vegetation. Climate was relatively wet and warm. Quantitative pollen-based climate reconstruction suggests that mean July temperatures were 4-5°C higher than the present during the optimum of the Eemian, while late Eemian records indicate significant climate deterioration. © 2004 Taylor & Francis.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 2
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    Patchiness of the megabenthos at small scales: Ecological conclusions by examples from polar shelves (2003)
    In:  EPIC3Polar Biology, 26(4), pp. 276-278, ISSN: 0722-4060
    Details
    Publication Date: 2024-04-23
    Description: With two exceptions, no general patterns of patchiness of the megabenthos were found on the Antarctic shelf and off northeast Greenland. Underwater videos were used as a sampling method and Morisita's Index of Dispersion for statistical analysis. A gradient from randomness to patchiness occurred for most taxa, whereas the pattern of asteroids could not be distinguished from randomness. In the Antarctic, the totals of other mobile animals were less aggregated than for sessile taxa. The findings are interpreted as a result of ecological complexity within species assemblages.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
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  • 3
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    Alpine Ice Cores and Ground Penetrating Radar: Combined Investigations for Glaciological and Climatic Interpretations of a Cold Alpine Ice Body (2003)
    In:  EPIC3TellusB(5), 55, pp. 1007-1017
    Details
    Publication Date: 2024-04-15
    Description: The accurate interpretation of ice cores as climate archives requires detailed knowledge about the glaciological environment.We investigate the potential of ground penetrating radar (GPR) surveys to obtain information about the internal structure of a cold alpine ice body to improve theinterpretation of two ice cores containing long-term climate information from Colle Gnifetti, Swiss-Italian Alps, retrieved as part of the ALPCLIM project.The GPR profiles connect several drill sites, parallel and perpendicular to the flow line, yielding a 3D picture of the subsurface.Observed internal reflection horizons are of isochronic origin, faciliating the transfer of age-depth relations between the ice cores.A third ice core record is used as independent means to estimate the accuracy of the GPR results in respect to flow modeling, based on glaciological surface data,which was used before for climate analysis of the ice cores.Our results demonstrate that GPR data is a mandatory tool for alpine ice core studies, as they allow to map major transitions in physical-chemical properties,transfer age-depth relations between sites, complement ambiguous peaks in core records for interpretation, and establish a detailed picture of the flow regimesurrounding the climate archive.
    Repository Name: EPIC Alfred Wegener Institut
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  • 4
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    Vindplaatsen van Distelbremraap [Orobanche reticulata subsp. pallidiflora (Wimm. & Grab.) Hayek] in verstoorde duinen (2001)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 27 no. 6, pp. 137-142
    Details
    Publication Date: 2024-04-02
    Description: About 30 years ago Orobanche reticulata was recorded on two sites in the dunes. The records were not accepted because the plants did not show the typical dark based glandular hairs. The rediscovery, after 28 years, of this rare species on one of those earlier dune localities led to the notion that this character is not absolutely reliable. From field observations it appears that O. reticulata usually grows in groups of several (usually tall) specimens which flower successively during a period of three months. All other records of O. reticulata in the Netherlands are situated in the riverine district, so it is suggested that the inlet of Rhine water for infiltration works was a factor that caused its establishment in this dunal area.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 5
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    Excursieverslagen van FLORON-kampen in 2003 (2004)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 30 no. 2, pp. 50-59
    Details
    Publication Date: 2024-04-02
    Repository Name: National Museum of Natural History, Netherlands
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  • 6
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    Pickfordiateuthis pulchella [Cephalopoda: Myopsida]; range extension to Bonaire (N.A.) (1984)
    In:  Studies on the Fauna of Curaçao and other Caribbean Islands vol. 67 no. 1, pp. 104-106
    Details
    Publication Date: 2024-04-02
    Description: On August 3, 1982 a small squid was collected opposite “Trans World Radio” at Bonaire (Netherlands Antilles). It was kept in a tank for several hours before it died. The species was identified as Pickfordiateuthis pulchella Voss, 1953, hitherto only known from the Florida Keys, U.S.A. According to Voss (1953) it was probably confined to the geographical area represented by the Florida Keys. ABBOTT (1974) mentioned a distribution from southeast Florida to Panama without refering to literature other than Voss (1953). The specimen from Bonaire, a male, differs from the figure of the holotype (a female) mainly in having proportionally shorter tentacles and the posterior end less bluntly tapered. It agrees well with the male paratype, figured by Voss (1953: fig. 3). The measurements of the specimen are: mantle length 16.0 mm, width 6.9 mm and length of head 7.1 mm. The pigmentation of the dorsal side of the head consists of chromatophores, which are larger and darker than those on the ventral side. The pigmentation on the dorsal side of the mantle is less prominent and consists of more diffuse and smaller spots. The ventral side of the mantle is hardly pigmentated with very small dots.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 7
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    Notities over Nederlandse zeewieren I (1984)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 12 no. 6, pp. 130-135
    Details
    Publication Date: 2024-04-02
    Description: Four species considered to be newly found drifting ashore are described and illustrated: Sargassum natans (L.) Børg., Champia parvula (C. Ag.) Harv., Crouania attenuata (C. Ag.) J. Ag. and Callophyllis laciniata (Huds.) Kütz. In addition some notes are made on new records of Pogotrichum filiforme Reinke, Leathesia difformis (L.) Aresch. and Punctaria latifolia Grev.
    Repository Name: National Museum of Natural History, Netherlands
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  • 8
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    [Proceedings of the VII international symposium 'Cultural heritage in geosciences, mining and metallurgy : libraries, archives, museums' : "Museums and their collections" held at the Nationaal Natuurhistorisch Museum Leiden (The Netherlands), 19-23 May, 2003 / Cor F. Winkler Prins and Stephen K. Donovan (editors)]: The Dubois collection: a new look at an old collection (2004)
    In:  Scripta Geologica. Special Issue vol. 4 no. 31, pp. 267-285
    Details
    Publication Date: 2024-03-22
    Description: One of the most exciting episodes of paleoanthropology was the find of the first transitional form, the Pithecanthropus erectus, by the Dutchman Eugène Dubois in Java during 1891-1892. The history of Dubois and his finds of the molar, skullcap and femur, forming his transitional form, are described. Besides the human remains, Dubois made a large collection of vertebrate fossils, mostly of mammals, now united in the so-called Dubois Collection. This collection played an important role in unravelling the biostratigraphy and chronostratigraphy of Java. Questions, such as from where were those mammals coming, when did Homo erectus arrive in Java, and when did it become extinct, and when did Homo sapiens reach Java, are discussed.
    Repository Name: National Museum of Natural History, Netherlands
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  • 9
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    A new species in Coprinus subsection Setulosi (2002)
    In:  Persoonia - Molecular Phylogeny and Evolution of Fungi vol. 18 no. 1, pp. 143-145
    Details
    Publication Date: 2024-03-06
    Description: Coprinus canistri spec. nov. is proposed. It belongs to the subsection Setulosi because of the presence of pileo- and caulocystidia. A comparison is given with C. subimpatiens and C. congregatus, on account of similar microscopical characters.
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
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    Notes on New World Hippocrateeae (Fam. Celastraceae) II. A new species in Hemiangium (1983)
    In:  Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht vol. 535 no. 1, pp. 427-430
    Details
    Publication Date: 2024-02-22
    Description: Anthodus paniculatus Martius, reduced to a synonym of Hemiangium excelsum (H.B.K.) A. C. Smith by A. C. Smith, is reestablished here as Hemiangium paniculatum (Mart.) A. M. W. Mennega. H. excelsum in the present sense is now restricted to C. America, whereas H. paniculatum occurs in S. America.
    Repository Name: National Museum of Natural History, Netherlands
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