1200 years of regular outbreaks in alpine insects
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The long-term history of Zeiraphera diniana Gn.Abstract:
The long-term history of Zeiraphera diniana Gn. (the larch budmoth, LBM) outbreaks was reconstructed from tree rings of host subalpine larch in the European Alps. This record was derived from 47513...read more
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Widespread crown condition decline, food web disruption, and amplified tree mortality with increased climate change-type drought
TL;DR: It is found that defoliation trends are paralleled by significant increases in tree mortality rates in drier areas that are related to tree density and temperature effects, creating long-term disruptive effects of drought on food webs.
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Cooling and societal change during the Late Antique Little Ice Age from 536 to around 660 AD
Ulf Büntgen,Vladimir S. Myglan,Frederik Chaprentier Ljungqvist,Michael McCormick,Nicola Di Cosmo,Michael Sigl,Michael Sigl,Johann H. Jungclaus,Sebastian Wagner,Paul J. Krusic,Jan Esper,Jed O. Kaplan,Michiel de Vaan,Jürg Luterbacher,Lukas Wacker,Willy Tegel,Alexander V. Kirdyanov,Alexander V. Kirdyanov +17 more
TL;DR: In this paper, the authors used tree-ring chronologies from the Russian Altai and European Alps to reconstruct summer temperatures over the past two millennia and found an unprecedented, longlasting and spatially synchronized cooling following a cluster of large volcanic eruptions in 536, 540 and 547 AD.
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Studying global change through investigation of the plastic responses of xylem anatomy in tree rings
Patrick Fonti,Georg von Arx,Ignacio García-González,Britta Eilmann,Ute Sass-Klaassen,Holger Gärtner,Dieter Eckstein +6 more
TL;DR: It is believed that the study of tree-ring anatomy is emerging as a promising approach in tree biology and climate change research, particularly if complemented by physiological and ecological studies.
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Collapsing population cycles.
TL;DR: The cause and implication of changes in population cycles in voles, grouse and insects in Europe are discussed, which are expected to imply collapses of important ecosystem functions, such as the pulsed flows of resources and disturbances.
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Direct impacts of recent climate warming on insect populations.
Christelle Robinet,Alain Roques +1 more
TL;DR: The key impacts of global warming on insect development and dispersal are reviewed, including earlier flight periods, enhanced winter survival and acceleration of development rates are the major insect responses.
References
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Journal ArticleDOI
What causes population cycles of forest Lepidoptera
TL;DR: The available data suggest that forest caterpillar cycles are more likely to be the result of interactions with insect parasitoids, an old argument that seems to have been neglected in recent years.
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Insect Defoliation and Nitrogen Cycling in Forests
Gary M. Lovett,Lynn M. Christenson,Peter M. Groffman,Clive G. Jones,Julie E. Hart,Myron J. Mitchell +5 more
TL;DR: The mechanisms and magnitudes of N-cycle perturbations by defoliation are examined, drawing heavily on the considerable body of research on the gypsy moth (Lymantria dispar L.), an introduced lepidopteran that has been the major defoliator of hardwood forests in the northeastern United States during the last 5 or 6 decades.
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A 1052-year tree-ring proxy for Alpine summer temperatures
TL;DR: In this paper, a June-August Alpine temperature proxy series is developed back to AD 951 using 1,527 ring-width measurements from living trees and relict wood, which is composed of larch data from four Alpine valleys in Switzerland and pine data from the western Austrian Alps.
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Induction of Defenses in Trees
TL;DR: Analyse comparative des reactions des arbres feuillus, aux insectes,Comparison des raisons impliquees dans les variations des reponses observees.
Journal Article
The X-Ray Technique as Applied to Dendroclimatology
TL;DR: In this article, the characteristics of each type of ring measurement are discussed, and their relationships to monthly temperature and precipitation data are analyzed by means of Gleichlaufigkeit percentages and response function techniques.