For each environmental factor separately, traits are characterised by 3 numbers:
Plasticity Index (PI). This is the ratio of the highest fitted value across the response curve
divided by the lowest, with a minus sign if the overall trend is negative.
Consistency Index (CI). This is the % of compiled experiments in which the treatment with the highest level in a given experiment had a higher phenotypic value
than the treatment with the lowest level. 0% and 100% therefore indicate highly consistent responses, whereas 50% indicates low consistency in the literature data, with
with increases and decreases in the trait occurring with equal frequency
Reliability Index (RI). This value is based on the nmber of data points, the number of species studies,
the extent to which the full range of the dose-response curve is covered, and the variability around the dose-response curve. The RI indicates how stable
the presented dose-response curves are when additional data were to be added. Values range from 0-9
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For each trait we additionally provide:
A graphical display. In this graph, average
response curves are shown, the course of the median value for a number of subregions
of each environmental factor (bold brown lines), the interquartile range (25th-75th percentile; shaded area), and the
10th and 90th percentile of the distribution of all observations within a subsection of the curve (black
broken lines).
A table with the parameters of the dose-response curves. Indicated are the form of the dose-response curve,
(lin: a straight line; sat: a saturating response of the form Y = a*(1-b*exp(-cX)); opt: an optimum curve; none: no relationship at all), the number of data
(mean values per species per experiment per level of the environmental factor applied) and a pseudo r2 of the fitted line. All response curves are obtained
by median fitting.
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