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  • 1
    Electronic Resource
    Electronic Resource
    Successional pattern above timberline in south-central Chile (1979)
    Springer
    Plant ecology 40 (1979), S. 39-47 
    Details
    ISSN: 1573-5052
    Keywords: Andes ; Chile ; Pattern analysis ; Succession ; Vulcanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In the above-timberline zone of south-central Chile, stepped microtopography commonly develops on slopes of unstable volcanic ash deposits. Between the Nothofagus timberline and the high-altitude sparse fellfields, a scrubgrassland vegetation dominated by prostrate shrubs such as Empetrum rubrum and Pernettya spp. and tussock grasses such as Hierochloe utriculata and Cortaderia pilosa characteristically occurs on the stepped microtopography. Species interactions and species-microtopography interactions during the course of succession on the recent volcanic deposits were investigated by means of pattern analysis. Scales of pattern associated with individual plant morphology and interspecific interactions are present but, in general, the scales of pattern attributed to environmental variation are more evident. Cyclic changes occur in the scrub-grassland under the influence of periodic burial by the unstable ash substrate and the life cycles of the dominant prostrate shrubs. Such cyclic changes are part of a long-term linear successional trend following disturbance by catastrophic vulcanism. In contrast to the basic assumption of classic successional theory, in both the short-term and long-term the physical habitat in the above-timberline zone of south-central Chile is fundamentally unstable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00052013
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Catastrophic influences on the vegetation of the Valdivian Andes, Chile (1978)
    Springer
    Plant ecology 36 (1978), S. 149-167 
    Details
    ISSN: 1573-5052
    Keywords: Andes ; Catastrophic events ; Chile ; Colonization ; Fire ; Forest structure ; Nothofagus forest ; Succession ; Vulcanism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In association with a devastating earthquake in 1960, thousands of debris avalanches, landslides, and mudflows occurred in the Andes of south-central Chile. Catastrophic mass movements associated with seismic activity have affected the Andes of south-central Chile several times in the past 400 years and have profoundly influenced the regional vegetation. The most widespread forest types in the Andean Cordillera of the Province of Valdivia (latitude 39°25′ to 40°40′ S) are dominated byNothofagus spp. andEucryphia cordifolia and characteristically have an intermediate layer of shade-tolerant trees. These forest types represent relatively early successional phases following forest destruction by catastrophic phenomena. The supporting evidence for this interpretation includes: (1) the nature of the colonization of the surfaces exposed by the 1960 mass movements, (2) the structure of the existing forest vegetation, (3) the ecological characteristics of the dominant trees, and (4) the historical frequency of similar catastrophic events in the Andes of south-central Chile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02342598
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    Paper (German National Licenses)
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