INSECT PESTS IN FORESTS IN ZECHIA · 2018. 7. 3. · 2015 swarming in SE Moravia, ... Hlavní...
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INSECT PESTS IN FORESTS IN CZECHIA Forest Protection Service, FGMRI Coordinator: Ing. Miloš Knížek, Ph.D.
Transcript of INSECT PESTS IN FORESTS IN ZECHIA · 2018. 7. 3. · 2015 swarming in SE Moravia, ... Hlavní...
INSECT PESTS IN FORESTS IN CZECHIA
Forest Protection Service, FGMRI
Coordinator: Ing. Miloš Knížek, Ph.D.
• SC in 2016 - 6 mil. m3 (2015 – 4.5 mil. m3)
• SC cca 50 % of total cuttings
• Biotic factors – the main in 2016 – 3.5 mil. m3 (2015 – 1.8 mil. m3)
• In 2017 cca 7,5 mil. m3 – bark beetles and wind
abiotic damages 3,4 biotic factors 4,1!
Registered sanitary cuttings
Abiotic damagesIn 2016:
• mainly draught – 1.4 mil. m3 (2015 – 0.5 mil. m3) windfelling -1.1 mil. m3 (2015 – 2.2 mil. m3)
• 2015 a 2016 favorable from long term point of view (damages by wind)
Wind damages in 2017 (hurricanes):
• August – cca 1.1 mil. m3
• Herwart (29.10.2017) – cca 3 mil. m3
• Xanthos (11.-12.12.2017) – cca 0.25 mil. m3
• In Total cca 4.5 mil. m3
• Additonal in 2018
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Pre
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rma
lu(1
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-1,5
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nfr
om
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rma
l(1
96
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0)
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)
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mil.
m3
živelní hmyzová
Recorded volume of BB spruce wood in Czechia
1951-1960 2 mil. m3
1961-1970 3 mil. m3
1971-1980 4 mil. m3
1981-1990 8 mil. m3
1991-2000 9 mil. m3
2001-2010 10 mil. m3
2011-2017 12 mil. m3
In total cca 50 mil. m3
Real stage min. 60 mil. m3
Recorded volume of spruce BB infested wood since 1990
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tis.
m3
! 1,5 mil. m3
more – droughtand Armillaria
Recorded volume of spruce BB infested wood in 2017
2016
Moravskoslezský a Olomoucký
region – more than 2 mil. m3
(more than ½ of the whole country) (district of Bruntál – 1,2 mil m3)
Recorded volume per ha of spruce BB infested wood in 2017
2016
Bark beetlesProtection measurements
2016:
cca 405 th. m3 trap trees (2015 – 195 th. m3)
cca 58 th. pheromone traps (2015 – 35 th.)
barked nearly 35 th. m3 (2015 – 27 th. m3)
chemically treated cca 263 th. m3 (2015 – 60
th. m3)
2017:
cca 461 th. m3 trap trees
cca 53 th. pheromone traps
barked 30 th. m3
chemically treated 486 th. m3
Monitoring of Ips duplicatus in 2017
No
resin
flow
Stage in northern Moravia and SilesiaPhotos
Moravia and Silesia, September 2017
Humanreasons
General causes
• Permanent loss of qualified workforce
• Inactivity of a number of owners
• Inflexible system of public procurement
Related impacts
• Late processing of bark beetles and other infested wood
• Insufficient processing of bark beetles infested wood
Bark and wood boring insects on other trees in 2016
Pine:Increase of Tomicus, Ips acuminatus, Phaenopscyanea and Pissodes sp. infestation
Local increase of Pityokteines sp. – Fir, Hylesinus – Ash and species on Oak
Morava, Třebíč, July 2017
Melolontha and Cephalcia sp. - low importance
Lymantria monacha, Zeiraphera griseana, Lymantria dispar, Pristiphora sp., Pikonema sp. – low population density (latency)
Higher population density of Cameraria ohridella
Local damages by Dreyfusia on Fir
Defoliating and sucking insects in 2016
Recorded occurrence of defoliating insects in coniferous and deciduous stands in Czechia since 1990
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Jehličnaté Listnaté
Hylobius abietis
Damages on plantations in 2017
1 937 ha (2016 – 1 825 ha)
Treatment
6 400 ha (2016 – 7 400ha)
Larvi of Melolontha hippocastani
damages in young trees and plantations
• 2015 swarming in SE Moravia, 2016 in central and E Bohemia
• 2016 – 20 ha (2015 – 120 ha)
• 2017 – cca 150 ha (SE Moravia mainly)
• 2018 – increase of damages in Bohemia mainly
• Next swarming in SE Moravia (2019), central and E Bohemia (2019 a 2020)
Other insects
Still increasing importance in both, coniferous and deciduous stands(draught)
Region Area (ha) Volume (m3)
Hlavní město Praha 0,0 4
Jihočeský 230,8 5 684
Jihomoravský 204,5 8 121
Karlovarský 1,0 417
Vysočina 61,0 1 616
Královéhradecký 1 684,5 3 899
Liberecký 0,00 414
Moravskoslezský 1 225,7 152 774
Olomoucký 563,0 129 509
Pardubický 47,3 3 249
Plzeňský 201,7 1 131
Středočeský 464,0 3 097
Ústecký 69,0 324
Zlínský 38,1 8 340
Total in 2017 4 790,5 318 578
Armillaria sp.
Recorded volume of Armillaria sp. infested wood in 2017
draught
fungal pathogens - secondaryDiplodia pini /=Shpaeropsissapinea/
importance of bark and wood boring insects
Fungal damages in pine stands
Forecast for 2018
Continuation of calamity of BB in spruce stands – historically highest in CzechiaIncrease in influenced regionsExpanding of Ips typographus gradation areaGradation will start in new areas (higher altitudes)Gradation of cambioxylophagous insect on other trees – Pine, Oak
Lymatria dispar (Lymantria monacha – not yet)
Hylobius abietis, rodents
Continuation of high damages by game
Armillaria in spruce stands
Continuation of problems in Fraxinus, Alnusand Pinus stands, Gemmamyces piceae
Thank you for your attention!
Forest Protection
Service
www.vulhm.cz/los
Forestry and Game
Management
Research Institute
