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  • 1
    Monograph available for loan
    Monograph available for loan
    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Call number: PIK N 531-93-0134
    In: Heathlands and related shrublands
    Type of Medium: Monograph available for loan
    Pages: XVI, 385 S. , Ill., graph. Darst.
    ISBN: 0444418091 , 0-444-41810-5
    Series Statement: Heathlands and related shrublands 9B
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Call number: PIK N 531-93-0133
    In: Heathlands and related shrublands
    Type of Medium: Monograph available for loan
    Pages: XIV, 497 S. , Ill., graph. Darst.
    ISBN: 0444418105
    Series Statement: Heathlands and related shrublands 9A
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Amsterdam [u.a.] : Elsevier
    Associated volumes
    Call number: PIK N 531-93-0137
    In: Ecosystems of the world
    Type of Medium: Monograph available for loan
    Pages: 643 S.
    ISBN: 044441858x
    Series Statement: Ecosystems of the world, 11
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Biodiversity and conservation 2 (1993), S. 152-167 
    ISSN: 1572-9710
    Keywords: species richness ; overstorey ; understorey ; primary productivity ; shoot growth ; solar radiation ; shading
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: The species richness (number of vascular plants per hectare) of Australian plant communities (containing a mosaic of gap, regeneration, maturation and senescent phases) is correlated with the annual biomass productivity of the overstorey canopy. The annual production of leaves and stem in the canopy of the plant community is shown to be limited by the requirements of photosynthesis (particularly light and the availability of water) and the length of the growing season. The species richness of Australian plant communities is the product of the blance between the dominance of the overstorey and the response of the understorey to the shading of the overstorey. For all climatic regions and zones the species richness of the overstorey of the plant community is shown to be exponentially related to the annual shoot growth of the overstorey canopy, until the latitudinal or altitudinal tree line is reached. With latitudinal increase outside the tropics, overstorey canopies of forest communities absorb increasingly more of the incident solar radiation. markedly reducing the species richness of the understorey strata. In contrast, in these latitudes the overstorey of plant communities with widely spaced trees or tall shrubs will absorb far less solar radiation, thus enabling the species richness of the understorey to be maintained.
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 1993-04-01
    Print ISSN: 0960-3115
    Electronic ISSN: 1572-9710
    Topics: Biology
    Published by Springer
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  • 6
    Publication Date: 2012-01-01
    Description: During the short period of annual foliage growth in evergreen plant communities, aerodynamic fluxes (frictional, thermal, evaporative) in the atmosphere as it flows over and through a plant community determine the Foliage Projective Covers and leaf attributes in overstorey and understorey strata. The number of leaves produced on each vertical foliage shoot depends on available soil water and nutrients during this growth period. The area of all leaves exposed to solar radiation determines net photosynthetic fixation of the plant community throughout the year. In turn, the species richness (number of species per hectare) of both plants and resident vertebrates is determined. The species richness of unicellular algae and small multicellular isopods in permanent freshwater lagoons in Northern Australia may possibly have been increased by radiation released from nearby uranium deposits. Evolution of new angiosperms probably occurred in refugia during periods of extreme drought. When favourable climates were restored, the vegetation expanded to result in high Gamma Biodiversity (number of plant species per region) but with each major plant community having essentially the same species richness (number of plant species per hectare). The probable effects of pollution and Global Warming on biodiversity in Australian ecosystems, that experience seasonal drought, are discussed.
    Print ISSN: 1687-9708
    Electronic ISSN: 1687-9716
    Topics: Biology
    Published by Hindawi
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