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Vegetation of the Lake Ipea Region, New Guinea Highlands: I. Forest, Grassland and `Garden'

D. Walker
Journal of Ecology
Vol. 54, No. 2 (Jul., 1966), pp. 503-533
DOI: 10.2307/2257964
Stable URL: http://www.jstor.org/stable/2257964
Page Count: 35
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Vegetation of the Lake Ipea Region, New Guinea Highlands: I. Forest, Grassland and `Garden'
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Abstract

The floristics and structure of the forest, grassland and gardens in the vicinity of Lake Ipea (Iviva) at about 2500 m M.S.L. in the New Guinea Highlands are described. In the undisturbed forest, structure and flora seem to vary continuously although nodal types are recognizable, particularly that dominated by Nothofagus pullei. The types of high forest sampled are thought not to be derived from a common stock as the result of different types or degrees of human interference. The making, maintenance and harvesting of sweet potato gardens are described. The sequences of colonization by ruderals, grassland and woodland plants are recorded and the influences of pigs, fire and re-working on the vegetational fate of a formerly gardened area are discussed. Current horticultural practices are thought adequate for the creation of the present grassland from forest but direct proof of this and of the status of some parts of the forests must await palynological investigation of the swamp deposits of the region.

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