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EXPANSION OF GEOGRAPHIC RANGE IN THE PINE PROCESSIONARY MOTH CAUSED BY INCREASED WINTER TEMPERATURES
A recent latitudinal and altitudinal expansion of the pine processionary moth, Thaumetopoea pityocampa, whose larvae build silk nests and feed on pine foliage in the winter is reported, attributed to increased winter survival due to a warming trend over the past three decades. Expand
Regulation of Woody Plant Secondary Metabolism by Resource Availability: Hypothesis Testing by Means of Meta-Analysis
Plant responses to nitrogen fertilization, shading and CO 2 enrichment in terms of pooled CBSCs and carbohydrates were consistent with predictions made with the two hypotheses, but among biosynthetically distinct groups of CBSCs only concentrations of phenylpropanoid-derived compounds changed as predicted; hydrolyzable tannins and terpenoids, in particular, were less responsive. Expand
Stressful Times for the Plant Stress: Insect Performance Hypothesis
- S. Larsson
- 1 October 1989
Insect performance on experimentally stressed woody plants: a meta-analysis.
Overall, plant stress had no significant effect on insect growth rate, fecundity, survival, or colonization density, but great variation was found in the magnitude and direction of insect responses among studies, most of which was related to insect feeding guild. Expand
A rapid altitudinal range expansion in the pine processionary moth produced by the 2003 climatic anomaly
A recent rapid shift of the range limit during the record hot summer of 2003 in southern Europe that has the potential to be both permanent and permanent, and to have important implications on species range dynamics in general is reported. Expand
Urticating hairs in arthropods: their nature and medical significance.
This review focuses on the true setae because their high density on a large number of common arthropod species has great implications for human and animal health and other mechanisms for setae-mediated disease are suggested. Expand
Role of Enemy‐Free Space and Plant Quality in Host‐Plant Selection by Willow Beetles
It is argued that herbivores such as P. vitellinae obtain enemy—free space on hosts from which they sequesters plant—derived allelochemicals for defense through dietary specialization on host—plant species that provide these precursors for defense. Expand
Insects on trees : population and individual response to fertilization
This review of the literature dealing with the effect of soil fertilization on phytophagous insects and mites on trees attempts to facilitate the interpretation of the experimental results by distinguishing between direct effects on insect individuals and population level effects, and by grouping insects according to their feeding mode. Expand
Thermal growth performance of juvenile brown trout Salmo trutta: no support for thermal adaptation hypotheses.
- T. Forseth, S. Larsson, A. Jensen, B. Jonsson, I. Näslund, I. Berglund
- Biology, Medicine
- Journal of fish biology
Growth capacity varied between populations but there was no significant correlation between any of the estimated thermal performance parameters and natural climatic conditions among populations, and growth capacity among populations tended to correlate positively with female size at maturity. Expand
Genetic improvement of willow for short-rotation coppice
- S. Larsson
- 1 July 1998
A commercial breeding programme of willows was started by Svalof Weibull AB in 1987 and rapid progress has been made in terms of improved yield, erect growth, resistance to leaf rust and insects and tolerance to frost. Expand