When beggars are choosers-How nesting of a solitary bee is affected by temporal dynamics of pollen plants in the landscape

Anna S. Persson; Florence Mazier; Henrik G. Smith

doi:10.1002/ece3.4116

When beggars are choosers-How nesting of a solitary bee is affected by temporal dynamics of pollen plants in the landscape

Ecology and Evolution ◽

10.1002/ece3.4116 ◽

2018 ◽

Vol 8 (11) ◽

pp. 5777-5791 ◽

Cited By ~ 5

Author(s):

Anna S. Persson ◽

Florence Mazier ◽

Henrik G. Smith

Keyword(s):

Temporal Dynamics ◽

Solitary Bee ◽

Pollen Plants

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Oligolectic bee species in Northern Europe (Hymenoptera, Apoidea)

Entomologica Fennica ◽

10.33338/ef.83945 ◽

1997 ◽

Vol 8 (4) ◽

pp. 205-214 ◽

Cited By ~ 19

Author(s):

Antti Pekkarinen

Keyword(s):

Threatened Species ◽

Northern Europe ◽

Solitary Bee ◽

Pollen Plants ◽

Distribution Limits ◽

Aconitum Septentrionale ◽

Oligolectic Bees

Evolution of flower specialization in bees, the concepts of poly-, oligo- andmonolecty are reviewed. About 60 species recorded in the area of Finland and Sweden are regarded as oligolectic. The proportions of oligoleges among all pollen-collecting bee species are about 30 percent in alarge area of central and Northern Europe. The proportion is about 15 percent in the northern boreal area of Finland and Sweden, where the percentage of polylectic bumblebees is much greater than in more southern areas. Of the solitary bee species recorded in Finland and Sweden, 25 arc regarded as narrow oligoleges, of which 6 species collect pollen from Campanula and 5 from Salix. Eusocial Bombus consobrinus is regarded as a facultative narrow oligolege of Aconitum septentrionale and, apparently, this bee species is the only oligolege in northern Europe, whose distribution completely covers that of the pollen plant. The distribution limits of some narrow oligoleges (e.9. Eucera longicornis and Andrena hattorfiana) approximately follow certain frequencies of their principal pollen plants (lathyrus pratensis and Knautia, respectively). Of the oligolectic bee species in Finland, 32 occur on the lists of threatened species of England, southwestern Germany or Poland. Records of E. longicornis and A. hattorfiana from various periods are given as examples of the decline of oligolectic bees in Finland during recent decades.

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Nonlinear Spatio-Temporal Dynamics and Chaos in Semiconductors

10.1017/cbo9780511524615 ◽

2001 ◽

Cited By ~ 136

Author(s):

Eckehard Schöll

Keyword(s):

Temporal Dynamics ◽

Spatio Temporal

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Effects of Monetary Incentives on Task Switching

Experimental Psychology (formerly Zeitschrift für Experimentelle Psychologie) ◽

10.1027/1618-3169/a000146 ◽

2012 ◽

Vol 59 (4) ◽

pp. 216-226 ◽

Cited By ~ 36

Author(s):

Thomas Kleinsorge ◽

Gerhard Rinkenauer

Keyword(s):

Task Switching ◽

Temporal Dynamics ◽

Reward Processing ◽

General Level ◽

Monetary Incentives ◽

Switch Costs ◽

Expectancy Effect ◽

Reward Expectancy ◽

Trial Basis

In two experiments, effects of incentives on task switching were investigated. Incentives were provided as a monetary bonus. In both experiments, the availability of a bonus varied on a trial-to-trial basis. The main difference between the experiments relates to the association of incentives to individual tasks. In Experiment 1, the association of incentives to individual tasks was fixed. Under these conditions, the effect of incentives was largely due to reward expectancy. Switch costs were reduced to statistical insignificance. This was true even with the task that was not associated with a bonus. In Experiment 2, there was a variable association of incentives to individual tasks. Under these conditions, the reward expectancy effect was bound to conditions with a well-established bonus-task association. In conditions in which the bonus-task association was not established in advance, enhanced performance of the bonus task was accompanied by performance decrements with the task that was not associated with a bonus. Reward expectancy affected mainly the general level of performance. The outcome of this study may also inform recently suggested neurobiological accounts about the temporal dynamics of reward processing.

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