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Microtopographic analysis of plant distribution in polar desert |
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| Authors: | Masaki Okuda Satoshi Imura Masaharu Tanemura |
| Institution: | aDepartment of Statistical Science, The Graduate University for Advanced Studies (SOKENDAI), 4-6-7 Minami-azabu, Minato-ku, Tokyo 106-8569, Japan bDepartment of Polar Science, The Graduate University for Advanced Studies, National Institute of Polar Research, Kaga 1-chome, Itabashi-ku, Tokyo 173-8515, Japan cInstitute of Statistical Mathematics, 4-6-7 Minami-azabu, Minato-ku, Tokyo 106-8569, Japan |
| Abstract: | We suggest methods for the analysis of the spatial distribution of plant species in a research area divided into a quadrat lattice. In particular, information about the topography and the spaces without plants is used for the analysis. At sites with a homogeneous substratum, we classify the topography by whether a target grid is concave or convex with respect to a standard surface of altitude. At other sites, we classify the topography according to whether the grid is located at the edge of rock and/or at a water pool. Information about the topography and the plant existence is used for constructing 2 × 2 contingency tables. In order to determine the strength of dependence between the topography and plant existence, the Akaike information criterion (AIC) is used. The methods are applied to data of the microtopography and distribution of mosses in continental Antarctica. |
| Keywords: | Moss Microhabitat Topographic relief Quadrat method Continental Antarctica |
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