A Mathematical Approach to Defining Spatially Recurring Species Groups in a Montane Rain Forest on Mauna Loa, Hawaii

Date
1973-12
Authors
Maka, Jean E.
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Island Ecosystems IRP, U.S. International Biological Program
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Abstract
This project has undertaken to determine whether spatial arrangements could be detected and species groups defined mathematically in a montane rain forest ecosystem, which is located on the island of Hawaii on the east side of Mauna Loa in the Kilauea Forest Reserve. The vegetation was divided into four height layers, each of which contained species of similar life-form. A mathematical approach was used to determine if the vegetation could be further stratified on the ground. The data collected consisted of species quantities, such as cover or counts, in quadrats along transects. Plots, consisting of several of the smaller quadrats, were compared by ordination for the similarity of their composition. Species were compared by ordination for their similarity in occurrence by quadrats. The spatial arrangement within each life-form layer was determined by a new approach, called the heterogeneity test, utilizing random samples, the sum-of-squares clustering of the species and the comparison of the resultant dendrograms by statistical tests. Species groups within a heterogeneous layer were isolated by the sum-of-squares clustering. The ordination of plots in general revealed some variation, but no different species assemblages were detected within any of the layers.
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Keywords
Rain forests -- Hawaii -- Hawaii Island., Vegetation boundaries -- Hawaii -- Mauna Loa (Hawaii Island)., Plant communities -- Hawaii -- Hawaii Island., Plants -- Hawaii -- Hawaii Island., Mauna Loa (Hawaii Island, Hawaii)
Citation
Maka JE. 1973. A mathematical approach to defining spatially recurring species groups in a montane rain forest on Mauna Loa, Hawaii. Honolulu (HI): Island Ecosystems IRP, U.S. International Biological Program. International Biological Program Technical Report, 31.
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112 pages
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CC0 1.0 Universal
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