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  • Books  (1,693)
  • Articles  (293,487)
  • 1990-1994  (295,180)
  • 1980-1984  (32)
  • 1992  (295,180)
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  • 1
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    Protokoll über das 14. Kolloquium "Elektromagnetische Tiefenforschung" Borkheide vom 25.5-29.5.1992 (1992)
    Deutsche Geophysikalische Gesellschaft
    Details
    Publication Date: 2024-05-22
    Language: German , English
    Type: info:eu-repo/semantics/conferenceObject
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  • 2
    Monograph available for loan
    Monograph available for loan
    Die Nitratbelastung in den Grundwasserlandschaften der "alten" Bundesländer (BRD) (1992)
    Jülich : Forschungszentrum, Zentralbibliothek
    Associated volumes
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    Call number: PIK N 400-03-0156
    In: Berichte aus der ökologischen Forschung
    Type of Medium: Monograph available for loan
    Pages: IV, 150 S., 25 Kt. , ill., maps
    ISBN: 3893360891
    Series Statement: Berichte aus der ökologischen Forschung 8
    Note: Zugl.: Köln, Univ., Diss
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 3
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    Botanical Files. A study of the real chances for spontaneous gene flow from cultivated plants to the wild flora of the Netherlands (1992)
    In:  Gorteria. Supplement vol. 1 no. 1, pp. 1-100
    Details
    Publication Date: 2024-02-08
    Description: Separate \xe2\x80\x98Botanical files\xe2\x80\x99 have been made for 42 species of cultivated plants. Each file gives information about the cultivated plant itself (use, origin, etc.), its wild relatives in the Netherlands, a report on actual hybridization and/or crossing (indicating gene flow by pollen), and observations on escapes from the field to nature (indicating gene flow by diaspores); the information is summarized to a conclusion and a numerical code, indicating the possible ecological effects of the cultivated plant on the wild flora of the Netherlands. This study was especially undertaken for questions regarding biosafety research on Genetically Modified Organisms (GMO\xe2\x80\x99s). The sources are the herbarium collections of the State Herbarium at Leiden, floristic archives and botanical literature, as well as expert judgment on the flora of the Netherlands and crop plants. An important consideration is that the absence of certain hybrids in the State Herbarium can be interpreted as a decisive indication that such a hybrid does not occur in the wild in the Netherlands. The botanical files show that in c. 50% of the cases no gene flow is expected; in c. 15% of the cases small, often local-scale effects are expected; in c. 25% of the cases considerable gene flow to the wild is expected; in c. 10% of the cases further research should be done before a definite conclusion can be drawn (most of the cases need further taxonomic research).
    Repository Name: National Museum of Natural History, Netherlands
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  • 4
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    Boekaankondigingen (1992)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 18 no. 2, pp. 56-56
    Details
    Publication Date: 2024-02-08
    Description: Atlas van de natuurgebieden in de gemeenten Alkmaar en Bergen, Werkgroep Natuuratlas Alkmaar-Bergen, Alkmaar, 1991, 127 pag., te bestellen door overmaking van \xc6\x92 12,50 op ofwel giro 16377 van RABO-bank Alkmaar, onder vermelding van \xe2\x80\x98rek. nr. 16.17.56.999, Natuuratlas Alkmaar/ Bergen\xe2\x80\x98 en uw eigen naam en adres, ofwel rechtstreeks onder het rek. nr. bij de RABO-bank Alkmaar (eigen naam en adres vermelden). * J. Baalbergen (red.), \xe2\x80\x99t Fort Abcoude, geschiedenis en natuur, Stichting Fort Abcoude, historie en cultuur, Abcoude, 1991, 176 pag., ISBN 90-9004537-6. \xe2\x80\x94 Floristisch en vegetatiekundig is hoofdstuk 8 (pag. 124\xe2\x80\x94155) van belang, van de hand van A. A. Sterk en M.M. Sterk-Luteijn.
    Repository Name: National Museum of Natural History, Netherlands
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  • 5
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    Megabalanus krakatauensis (Nilsson-Cantell, 1934) (Cirripedia: Balanomorpha) revised (1992)
    In:  Bulletin Zoologisch Museum vol. 13 no. 7, pp. 73-77
    Details
    Publication Date: 2024-02-08
    Description: The species described by Nilsson-Cantell (1934) as Balanus krakatauensis and later assigned to Megabalanus has been reexamined and is redescribed, illustrated and transferred to Austromegabalanus (Notomegabalanus).
    Repository Name: National Museum of Natural History, Netherlands
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  • 6
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    Drastic changes in the amphipod fauna (Crustacea) of Dutch inland waters during the last 25 years (1992)
    In:  Bijdragen tot de dierkunde vol. 61 no. 4, pp. 193-204
    Details
    Publication Date: 2024-01-12
    Description: After the introduction of Gammarus tigrinus in The Netherlands some 25 years ago and of other recently invading amphipods (Crangonyx pseudogracilis and Corophium curvispinum) the native species decreased, the invaders increased. The success of these invaders and its impact on the local amphipod fauna is discussed. Electrophoretic tests give evidence that a second invasion of Gammarus tigrinus, this time from Germany, is taking place. Some predictions about future developments are made.
    Keywords: Netherlands ; amphipods ; changing distributions ; allozyme electrophoresis ; introduced species ; environmental changes
    Repository Name: National Museum of Natural History, Netherlands
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  • 7
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    A revision of Atlantic Asteropus Sollas, 1888 (Demospongiae), including a description of three new species, and with a review of the family Coppatiidae Topsent, 1898 (1992)
    In:  Bijdragen tot de dierkunde vol. 62 no. 1, pp. 3-19
    Details
    Publication Date: 2024-01-12
    Description: Various records of A. simplex Carter, 1879 from the Atlantic are assigned to three new species of the sponge genus Asteropus Sollas, 1888, viz.: A. brasiliensis sp. n., A. vasiformis sp. n., and A. niger sp. n., whereas A. simplex s.s. is restricted to the Indo- Pacific. A worldwide study of Asteropus specimens resulted in the conclusion that two species groups exist, namely \xe2\x80\x9csimplex\xe2\x80\x9d- like species (with true sanidasters), and \xe2\x80\x9csarasinorum\xe2\x80\x9d-like species (with spiny microrhabds), as previously observed by Bergquist (1965, 1968). A newly discovered microsclere complement of trichodragmata in the first group strengthens the need for generic distinction of both lineages, and accordingly the name Melophlus Thiele, 1899 is reinstated for the \xe2\x80\x9csarasinorum\xe2\x80\x9d species group. A key to the West Atlantic species of Asteropus is provided. The family allocation of Asteropus and associated genera in the Coppatiidae Topsent, 1898 is discussed, with the conclusion that the family is undoubtedly a polyphyletic assemblage related to various astrophorid groups (Hooper, 1986; Van Soest, 1991).
    Keywords: taxonomy ; Asteropus ; Coppatiidae ; Demospongiae
    Repository Name: National Museum of Natural History, Netherlands
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  • 8
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    Die Polychaeten der Amsterdam-Expedition nach der Insel Ascension (Zentral-Atlantik) (1992)
    In:  Bijdragen tot de dierkunde vol. 61 no. 4, pp. 219-235
    Details
    Publication Date: 2024-01-12
    Description: During the Amsterdam Expedition to Ascension Island in 1989 eighteen species of polychaetes were collected, fifteen of which were already known to science. One could not be identified to species level and two were new to science: Aricidea (Aedicira) ascensionensis n. sp. and Notodasus arenicola n. sp. Four of the known species are widely distributed, three are circumtropicalsubtropical and one has a tropical-subtropical distribution in the Pacific and in the Atlantic Ocean. Another species is recorded from different regions in the Atlantic Ocean. The rest of the species were \xe2\x80\x93 until now \xe2\x80\x93 only known from their type localities, viz. West Indies, Angola, Persian Gulf, Galapagos Islands, and South Shetland Islands.
    Keywords: Polychaeta ; taxonomy ; Ascension Island ; distribution
    Repository Name: National Museum of Natural History, Netherlands
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  • 9
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    The excavating sponges of the Santa Marta area, Colombia, with description of a new species (1992)
    In:  Bijdragen tot de dierkunde vol. 61 no. 4, pp. 205-218
    Details
    Publication Date: 2024-01-12
    Description: From June till December 1987 an inventory of the excavating sponges of the Santa Marta area, Colombian Caribbean, was made by scuba diving to depths not exceeding 18 m. Sixteen species were recorded and compared morphologically, using spicule sizes, papillae shapes, and excavation characteristics. Four littleknown species are fully described and illustrated by submarine color photographs in situ. One appears to be a new species: Axinyssa flavolivescens, belonging to a genus not known to excavate so far. The other three species could not be identified with certainty: Aka \xc3\xa4ff. xamaycaensis, Aka aff. brevitubulata, and Cliona aff. flavifodina. A key to the excavating sponges of the area studied is provided.
    Keywords: taxonomy ; excavating sponges ; Colombia ; Caribbean
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
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    Shallow-water Pycnogonida from Barbados, Lesser Antilles with description of Anoplodactylus justi n. sp. (1992)
    In:  Studies on the Natural History of the Caribbean Region vol. 71 no. 1, pp. 42-52
    Details
    Publication Date: 2024-01-12
    Description: M\xc3\x9cLLER, HANS-GEORG. Shallow-water Pycnogonida from Barbados, Lesser Antilles with description of Anoplodactylus Justi N. Sp., Studies Nat. Hist. Caribbean Region 71, Amsterdam 1992: 42-52. Eleven species of shallow-water Pycnogonida, one of which ( Anoplodactylus justi n. sp.) new to science, are recorderd from Barbados, Lesser Antilles. Endeis nodosa HILTON, 1942, is new to the Atlantic Ocean. An additional description of this species and of Anoplodactylus arcuatus CHILD, 1977 is given.
    Keywords: Pycnogonida. ; Barbados. ; Anoplodactylus justi n.sp. ; Sea spiders
    Repository Name: National Museum of Natural History, Netherlands
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