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. 2011 Jan 26;6(1):e14592. doi: 10.1371/journal.pone.0014592

Table 1. Habitat-specific diffusion coefficients, preferences and drift speeds.

Diffusion coefficient % Habitat availability % Habitat use Normalised preference Drift speed
Rocky grounds 350 (20) 40 18 0.096 16 (75)
Galleries –– (0) 2 1 0.149 13 (2)
Annuals 320 (61) 47 53 0.237 9 (204)
Perennials 220 (21) 11 28 0.518 6 (86)

Most habitat-specific diffusion coefficients (expressed in m2/min) were computed from too few couples of consecutive track segments (sample sizes between parentheses) to be reliable. Both habitat availability (non-weighted proportion of each habitat type) and use (UD-weighted proportion of each habitat type) were computed on the areas encompassed within 95% isopleths (see Fig. 1). Normalised preferences correspond to habitat use/availability ratios subject to unit-sum constraint. Drift speeds values (expressed in m/min) should be considered with extreme caution when computed from only a few track segments.