Table 1 Representativeness of grid cells (“Messtischblattquadrant, MTBQ”, a quadrant of the German ordnance maps, 0°5‶ × 0°3‶) with time series.

From: ReSurveyGermany: Vegetation-plot time-series over the past hundred years in Germany

Predictors

Population density

Road density

Urban cover

Cropland cover

Protected area

Estimates

CI

p

Estimates

CI

P

Estimates

CI

p

Estimates

CI

p

Estimates

CI

p

(Intercept)

30547

30128–30965

<0.001

1.59

1.55–1.63

<0.001

0.07

0.06–0.07

<0.001

0.45

0.44–0.45

<0.001

0.01

0.01–0.01

<0.001

type [unsampled]

−6686

−7447–−5925

<0.001

−0.52

−0.59–−0.45

<0.001

−0.03

−0.03–−0.03

<0.001

0.01

0.00–0.02

0.029

0.01

0.01–0.01

<0.001

Observations

11226

25303

12024

12024

29535

R2/R2 adjusted

0.026/0.026

0.008/0.008

0.019/0.019

0.000/0.000

0.038/0.038

  1. The estimates were obtained from linear models comparing samples with unsampled MTBQs with respect to population density, road density, urban cover, cropland cover and protected area.
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