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Barn owls display larger black feather spots in cooler regions of the British Isles

Roulin, Alexandre ; Randin, Christophe F.

In: Biological Journal of the Linnean Society, 2016, vol. 119, no. 2, p. 445-454

Università della Svizzera italiana

Exchange rate effects on cross-border commuting : Evidence from the Swiss-Italian border

Bello, Piera

In: Journal of economic geography, 2020, vol. 20, no. 4, p. 969-1001

Are cross-border workers responsive to changes in the exchange rate between the home and host countries' currencies? I answer this question by examining the effects of appreciation in the Swiss franc (CHF) relative to the euro (EUR) on labour supply decisions of Italian cross-border workers. I use hourly data on traffic flows in Ticino, the southernmost canton of Switzerland, together with...

Université de Fribourg

Adverse Effects of Monitoring: Evidence from a field experiment

Herz, Holger ; Zihlmann, Christian

(Working Papers SES ; 522)

We conduct a field experiment with remote workers to assess potential adverse effects of monitoring. We find that monitoring reduces the average performance of workers, in particular among the intrinsically motivated workforce. Moreover, monitoring cultivates the average worker: There are fewer high performers and the variance in performance is significantly reduced. Importantly, we show that...

Université de Fribourg

The influence of ant-attendance on aphid behaviour investigated with the electrical penetration graph technique

Rauch, Gisep ; Simon, Jean-Christophe ; Chaubet, Bernard ; Haack, Lucie ; Flatt, Thomas ; Weisser, Wolfgang W.

In: Entomologia Experimentalis et Applicata, 2002, no. 102, p. 13-20

For themutualistic interaction between the aphidMetopeurum fuscoviride Stroyan (Homoptera:Aphididae) and the ant Lasius niger L. (Hymenoptera: Formicidae) it has been shown that ant-tended aphids develop faster, reproduce at a higher rate, and live longer than aphids not tended by ants. We used electrical penetration graphs (EPG) to investigate if behavioural patterns differ between...

Université de Fribourg

The effects of mutualistic ants on aphid life history traits

Flatt, Thomas ; Weisser, Wolfgang W.

In: Ecology, 2000, vol. 81, no. 12, p. 3522-3529

The relationship between homopterans and ants is generally thought to be mutualistic, as both partners seem to benefit from an association. In aphids, previous studies have shown that ant tending improves the survival and reproduction of aphid colonies, mainly by protection of aphids from enemy attack. However, the effects of ant tending on the fitness of individual aphids have rarely been...

Université de Fribourg

Workplace health promotion and labour market performance of employees

Huber, Martin ; Lechner, Michael ; Wunsch, Conny

In: Journal of health economics, 2015, vol. 43, p. 170-189

This paper investigates the average effects of (firm-provided) workplace health promotion measures in form of the analysis of sickness absenteeism and health circles/courses on labour market out- comes of the firms’ employees. Exploiting linked employer-employee panel data that consist of rich survey- based and administrative information on firms, workers and regions, we apply a flexible...