Spatial distribution of time investment.

<p>Four exemplary foragers (male bank voles) at their first day of foraging under safe (left) and risky (right) conditions. Investment is displayed as Kernel contour cores 50% (darkest), 75% (lighter) and 95% (lightest shade) based on location density (time investment) and distance between locations.</p

Predicted distribution of total investment.

<p>The same total investment (sum of cell values) into a resource landscape with (A) uniformly low risk where investment is evenly spread among options or (B) uniformly high risk with distinct investment peaks (B). Higher number and darker colour indicate a higher local investment.</p

Classification of tree fructification [43].

<p>Classification of tree fructification [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0134124#pone.0134124.ref043" target="_blank">43</a>].</p

Number of notified human PUUV infections per Federal State in Germany from 2001–2012.

<p>Source: Robert Koch-Institute, SurvStat, <a href="http://www3.rki.de/SurvStat" target="_blank">http://www3.rki.de/SurvStat</a>, data status: 06/27/2014.</p><p>Number of notified human PUUV infections per Federal State in Germany from 2001–2012.</p

Total reported annual human Puumala virus (PUUV) cases in Germany 2001–2012 (all 16 Federal States).

<p>Source: Robert Koch-Institute, SurvStat, <a href="http://www3.rki.de/SurvStat" target="_blank">http://www3.rki.de/SurvStat</a>, data status: 06/27/2014.</p

Mean beech mast intensity of the previous year, bank vole abundance, and human PUUV incidence in Germany 2001–2012.

<p>Bars = mean beech mast intensity of the previous year, solid line = bank vole abundance, and broken line = human PUUV incidence. Values are mean values ± one standard error from 7 Federal States. Upper bold values are beech mast intensity corresponding to bars at the bottom. (PUUV = Puumala virus; TN = trap nights).</p