In general, disproportionately heavy sampling of the ends of a gradient increases the interpretability of eigenvector ordinations. More specifically, correspondence analysis (CA) and detrended correspondence analysis (DCA) best reproduce the original positions of samples in simulated coenoclines whe
Effect of sampling pattern on estimation of species distributions along gradients
โ Scribed by Mohler, C. L.
- Book ID
- 104616602
- Publisher
- Springer-Verlag
- Year
- 1983
- Tongue
- English
- Weight
- 403 KB
- Volume
- 54
- Category
- Article
- ISSN
- 1573-5052
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โฆ Synopsis
Computer simulation and statistical theory indicate that estimation of species distribution is difficult when species reach maximum abundance near one end of the sampled portion of a gradient or when they have wide ecological breadth. Relative to balanced sampling of the whole gradient, concentration of sampling effort near the ends increases accuracy in estimation of distributions of truncated species more than it decreases accuracy for other species. Hence, overall accuracy in the estimation of distributions for a collection of species with modes scattered about on a gradient is greatest when sampling is somewhat more intense near the extremes of the gradient.
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