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  • Articles  (587,047)
  • 1990-1994  (587,047)
  • 1994  (317,173)
  • 1990  (269,874)
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  • 1
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    A revision of Ichnocarpus (Apocynaceae) (1994)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 39 no. 1/2, pp. 73-94
    Details
    Publication Date: 2024-02-22
    Description: The genus Ichnocarpus is revised. A total of 12 species are recognised, of which one new species is described. Three new combinations in Ichnocarpus and one in Anodendron are made. Micrechites and Lamechites are treated as synonyms of Ichnocarpus. Nomina nuda and species exclusae have been given as well as an index of exsiccatae.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 2
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    Biochemical systematics of the leaf mining moth family Nepticulidae (Lepidoptera). III. Allozyme variation patterns in the Ectoedemia subbimaculella group (1990)
    In:  Bijdragen tot de dierkunde vol. 60 no. 3/4, pp. 189-197
    Details
    Publication Date: 2024-02-22
    Description: Gel electrophoretic techniques were used to analyse patterns of variation at 12 genetic loci within and among species of the Ectoedemia subbimaculella group from western Europe. Geographically separated conspecific populations were similar to one another genetically, with the exception of E. subbimaculella where the malate dehydrogenase locus exhibited clinal variation. Genetic differences among species often concerned loci that were monomorphic or slightly polymorphic within populations. Three of the species could not be diagnosed by their allozyme content; allele distribution patterns at some loci suggest that speciation took place recently and did not involve a genetic bottleneck. Phylogenetic trees constructed from allozyme data paralleled closely the phylogeny based on morphology.
    Keywords: Allozyme variation ; biochemical genetics ; taxonomy ; speciation ; Insecta
    Repository Name: National Museum of Natural History, Netherlands
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  • 3
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    Zur Kenntnis der Mikrofossilien und Problematika aus der Lausitzer Grauwacke (Kamenzer Gruppe) (1990)
    In:  Veröffentlichungen des Museums der Westlausitz, Kamenz
    Details
    Publication Date: 2024-02-16
    Keywords: 550 - Earth sciences
    Language: German
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  • 4
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    Die Grauwacken der Lausitz und ihre cadomische Prägung (1994)
    In:  Beiträge zur Geologie von Sachsen : Teil 2 | Abhandlungen des Staatlichen Museums für Mineralogie und Geologie zu Dresden
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    Publication Date: 2024-02-16
    Keywords: 550 - Earth sciences
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  • 5
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    Botanical Files on Lettuce (Lactuca sativa). On the chance for gene flow between wild and cultivated Lettuce (Lactuca sativa L. including L. serriola L., Compositae) and the generalized implications for risk-assessments on genetically modified plants (1994)
    In:  Gorteria. Supplement vol. 2 no. 1, pp. 1-44
    Details
    Publication Date: 2024-02-08
    Description: In Botanical Files, a study of the real chances for gene flow from cultivated plants to the wild a system of dispersal codes (Dpdf) was introduced (see text box Dpdf).\xc2\xb37 They are indications of already occurring gene flow from cultivated plants to the wild flora, as can be deduced from herbarium collections and florisdc archives. These codes apply to the Netherlands only.\nOne of the crops of which the real chances for gene flow could not be determined, because of uncertainties regarding the relationship between the cultivated plant and its wild relatives, is Lettuce (Lactuca sativa L.). Its relationship with the wild L. serriola L. is accepted to be very close, but the species are considered to be distinguishable. In a field trial, using 350 specimens from 67 genetically different populations, the distinction between the two species proved to depend largely on character states usually connected to domestication, like absence or presence of prickles, retention of achenes, leaf texture and colour.\nThe consequences are that both wild and cultivated lettuce must be considered to belong to the same species. The finding of some \xe2\x80\x98domesticated\xe2\x80\x99 character states in \xe2\x80\x98wild\xe2\x80\x99 lettuces indicates an already ongoing gene flow between cultivated lettuce and the wild flora, and the Dp(jf-code is adapted accordingly, indicating a substantial chance for gene flow from cultivated lettuce to its wild relative in the Netherlands.\nIf the scope of Dispersal codes as in Botanical Files is extended to Europe, European Dpdf-codes are needed. In this report a model is proposed using a plant geographical division of Europe into six vegetational regions. For each species six Dpdf-codes, summarizing the chances for gene flow to each of the regions, should be developed. For the major part of the species this can be done using the information already present in national herbarium collections.
    Repository Name: National Museum of Natural History, Netherlands
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  • 6
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    Boekaankondigingen (1994)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 20 no. 1, pp. 27-27
    Details
    Publication Date: 2024-02-08
    Description: *W. van der Hoek & B. Higler, Natuurontwikkeling in beken en dalen; verkennende studie naar de mogelijkheden van natuurontwikkeling in beek- en beekdalsystemen in Nederland, IBN-DLO (Deelprogramma Natuurontwikkeling), Wageningen, 1993, 253 pag. + bijlagen, NBP-onderzoekrapport 3.\nS.R.J. Jansen, D. Bal, H.M. Beije, R. During, Y.R. Hoogeveen & R.W. Uyterlinde, Ontwerpnota Ecosysteemvisies EHS, Kwaliteiten en prioriteiten in de ecologische hoofdstructuur van Nederland, Wageningen, 1993, 229 pag. + bijlagen, Werkdocument IKC-NBLF nr. 48. Te bestellen door een acceptgiro \xc3\xa0 \xc6\x92 17 onder vermelding van het gewenste rapport te sturen naar IKC-NBLF, Postbus 30, 6700 AA Wageningen.
    Repository Name: National Museum of Natural History, Netherlands
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  • 7
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    Over Lobelia inflata L. en Lobelia urens L. (Campanulaceae) (1994)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 20 no. 5/6, pp. 105-108
    Details
    Publication Date: 2024-02-08
    Description: Lobelia inflata is a North American species which has been found at five localities in the Netherlands, probably as an escape from pharmaceutical fields. As it was mistaken for the Atlantic-European species Lobelia urens, both species are illustrated, and an identification key for both species is presented.
    Repository Name: National Museum of Natural History, Netherlands
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  • 8
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    Nieuwe wetenschappelijke namen in de 21e editie van Heukels\xe2\x80\x99 Flora van Nederland (1990)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 16 no. 2, pp. 48-48
    Details
    Publication Date: 2024-02-08
    Description: Een nieuwe combinatie in Glyceria \xe2\x80\x94 Zoals door M. Kergu\xc3\xa9len in Buil. Soc. Bot. Fr. 125 (1978): 113\xe2\x80\x94120 is uiteengezet, moet de plant die tot dusver als Glyceria plicata Fries bekend stond, de (oudere) naam Glyceria notata Chevallier krijgen. Beschouwt men Glyceria declinata en G. notata als ondersoorten van \xc3\xa9\xc3\xa9n soort (de argumenten hiervoor zullen over enige tijd in Gorteria worden gepubliceerd), dan dient ook G. declinata een nieuwe naam te krijgen. Zij heet dan Glyceria notata Chevallier subsp. declinata (Br\xc3\xa9bisson) Weeda, comb. nov. (basionym: Glyceria declinata Br\xc3\xa9bisson, Fl. Normandie, ed. 3, 1859: 354).
    Repository Name: National Museum of Natural History, Netherlands
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  • 9
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    Floron-Rode Lijst 1990 (1990)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 16 no. 1, pp. 2-26
    Details
    Publication Date: 2024-02-08
    Description: De internationale natuurbeschermingsorganisatie I.U.C.N. begon in de jaren zeventig met de publicatie van soortenlijsten van in hun voortbestaan bedreigde organismen, de zogenaamde \xe2\x80\x98Red Data Books\xe2\x80\x99. Voor planten dateert de meest recente lijst voor Europa uit 1983.\xc2\xb9 Naast lijsten voor in Europa bedreigde soorten werden in Belgi\xc3\xab\xc2\xb2, Groot-Brittanni\xc3\xab\xc2\xb3 en Duitsland 4 ook nationale Rode Lijsten samengesteld. De huidige publicatie is bedoeld als een voorlopige eerste Rode Lijst van in Nederland bedreigde (vaat-)planten.\nNationale Rode Lijsten ontlenen hun waarde voor toepassingen op het terrein van natuurbeheer, -beleid en -bescherming uitsluitend aan de mate van betrouwbaarheid van de achterliggende gegevens. Hun betekenis is des te groter, naarmate onder deskundigen een grotere eensgezindheid over de inhoud van de Rode Lijst bestaat. De publicatie van de thans gepresenteerde Rode Lijst heeft dan ook vooral tot doel om allen die deskundig zijn op het gebied van de Nederlandse flora in de gelegenheid te stellen de Lijst op zijn merites te beoordelen. Het is de wens van de samenstellers dat deze Lijst in discussie komt, zodat eind 1990 of begin 1991 tot het maken van een tweede versie van de Rode Lijst kan worden overgegaan.
    Repository Name: National Museum of Natural History, Netherlands
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  • 10
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    Boekaankondigingen (1990)
    In:  Gorteria: tijdschrift voor de floristiek, de plantenoecologie en het vegetatie-onderzoek van Nederland vol. 16 no. 2, pp. 52-54
    Details
    Publication Date: 2024-02-08
    Description: Anonymus, Cruydt-Hoeck: De dikke zadenlijst, Postbus 1414, 9701 BX Groningen, 1990, 212 pag., te bestellen door overmaking van \xc6\x92 5 op giro 4058000 t.n.v. Cruydt-Hoeck, Groningen. \xe2\x80\x94 Een zeer informatieve catalogus voor wie een fraaie tuin of plantsoen wil maken met inheemse en goed geselecteerde uitheemse planten. * Anonymus, Inventarisatie van planten in het park Westerveld en de Steenen Kamer, Gemeente Arnhem, Dienst PeBReM, Blankenweg 22, 6827 BW Arnhem, 1989, 66 pag.
    Repository Name: National Museum of Natural History, Netherlands
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