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Optimizing interpolation of shoot density data from a Posidonia oceanica seagrass bed
Author(s) -
Scardi Michele,
Chessa Lorenzo A.,
Fresi Eugenio,
Pais Antonio,
Serra Simone
Publication year - 2006
Publication title -
marine ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.668
H-Index - 58
eISSN - 1439-0485
pISSN - 0173-9565
DOI - 10.1111/j.1439-0485.2006.00116.x
Subject(s) - posidonia oceanica , interpolation (computer graphics) , seagrass , kriging , mathematics , multivariate interpolation , scale (ratio) , bilinear interpolation , statistics , computer science , geography , ecology , cartography , biology , animation , computer graphics (images) , ecosystem
A case study on the optimization of Posidonia oceanica density interpolation, using a data set from a large meadow at Porto Conte Bay (NW Sardinia, Italy), is presented. Ordinary point kriging, cokriging and a weighted average based on inverse square distance were used to interpolate density data measured in 36 sampling stations. The results obtained from different methods were then compared by means of a leave‐one‐out cross‐validation procedure. The scale at which interpolation was carried out was defined on the basis of the Hausdorff dimension of the variogram. Optimizing spatial scale and data points search strategy allowed obtaining more accurate density estimates independently of the interpolation method.