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Climate-Induced Northerly Expansion of Siberian Silkmoth Range

V.N. Sukachev Institute of Forest SB RAS, Federal Research Center Krasnoyarsk Science Center SB RAS Academgorodok 50/28, 660036 Krasnoyarsk, Russia
Siberian Federal University, Institute of Space and Information Technology, pr. Kirenskogo 26a, 660074 Krasnoyarsk, Russia
Siberian Federal University, Institute of Ecology and Geography, pr. Svobodny 79, 660041 Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, Institute of Space Research and High Technologies, pr. Krasnoyarskiy Rabochii 31, 660014 Krasnoyarsk, Russia
NASA s Goddard Space Flight Center, Greenbelt, MD 20771, USA
Russian Center of Forest Protection, 660036 Krasnoyarsk, Russia
Author to whom correspondence should be addressed.
Forests 2017, 8(8), 301;
Received: 15 June 2017 / Revised: 20 July 2017 / Accepted: 10 August 2017 / Published: 16 August 2017
Siberian silkmoth (Dendrolimus sibiricus Tschetv.) is a dangerous pest that has affected nearly 2.5 × 106 ha of “dark taiga” stands (composed of Abies sibirica, Pinus sibirica and Picea obovata) within the latitude range of 52°–59° N. Here we describe a current silkmoth outbreak that is occurring about half degree northward of its formerly documented outbreak range. This outbreak has covered an area of about 800 thousand ha with mortality of conifer stands within an area of about 300 thousand ha. The primary outbreak originated in the year 2014 within stands located on gentle relatively dry southwest slopes at elevations up to 200 m above sea level (a.s.l.) Then the outbreak spread to the mesic areas including northern slopes and the low-elevation forest belts along the Yenisei ridge. Within the outbreak area, the northern Siberian silkmoth population has reduced generation length from two to one year. Our study showed that the outbreak was promoted by droughts in prior years, an increase of the sum of daily temperatures (t > +10 °C), and a decrease in ground cover moisture. Within the outbreak area, secondary pests were also active, including the aggressive Polygraphus proximus bark borer beetle. The outbreak considered here is part of the wide-spread (panzonal) Siberian silkmoth outbreak that originated during 2014–2015 with a range of up to 1000 km in southern Siberia. Our work concludes that observed climate warming opens opportunities for Siberian silkmoth migration into historically outbreak free northern “dark taiga” stands. View Full-Text
Keywords: Siberian silkmoth; climate change; phyllophages; pest outbreaks; biotic impact on forests; Siberian taiga; climate impact on insects Siberian silkmoth; climate change; phyllophages; pest outbreaks; biotic impact on forests; Siberian taiga; climate impact on insects
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MDPI and ACS Style

Kharuk, V.I.; Im, S.T.; Ranson, K.J.; Yagunov, M.N. Climate-Induced Northerly Expansion of Siberian Silkmoth Range. Forests 2017, 8, 301.

AMA Style

Kharuk VI, Im ST, Ranson KJ, Yagunov MN. Climate-Induced Northerly Expansion of Siberian Silkmoth Range. Forests. 2017; 8(8):301.

Chicago/Turabian Style

Kharuk, Viacheslav I., Sergei T. Im, Kenneth J. Ranson, and Mikhail N. Yagunov 2017. "Climate-Induced Northerly Expansion of Siberian Silkmoth Range" Forests 8, no. 8: 301.

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