Results 41 to 50 of about 148,023 (223)

High intercontinental migration rates and population admixture in the sapstain fungus Ophiostoma ips [PDF]

open access: yes, 2007
Ophiostoma ips is a common fungal associate of various conifer-infesting bark beetles in their native ranges and has been introduced into non-native pine plantations in the Southern Hemisphere.
ANNIE YART   +35 more
core   +1 more source

Seasonal flight patterns of the Spruce bark beetle (Ips typographus) in Sweden [PDF]

open access: yes, 2012
The major bark beetle threat to Norway spruce (Picea abies (L.) Karst.) in Eurasia is the spruce bark beetle Ips typographus. Beetles cause damage after population build-up in defenseless trees.
Öhrn, Petter
core   +1 more source

Inbreeding and selection on sex ratio in the bark beetle Xylosandrus germanus [PDF]

open access: yes, 2011
Background: Local Mate Competition (LMC) theory predicts a female should produce a more female-biased sex ratio if her sons compete with each other for mates.
Keller, Laurent   +19 more
core   +2 more sources

Internal changes associated with flight condition, reproductive maturity, and mating in bark and ambrosia beetles: A guide for dissection and assessment

open access: yesMethodsX
Bark and ambrosia beetles are a diverse group which inhabit plants. Outbreaks of some species compete with human values and cause significant economic and ecological impacts.
Katherine P. Bleiker   +2 more
doaj   +1 more source

Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions

open access: yesJournal of Forest Science, 2010
Research on merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies [L.] Karst.) was carried out in spruce stands of different age in the area with an endemic population (Moravian-Silesian Beskids, Czech Republic) and in the area ...
E. Kula, W. Ząbecki
doaj   +1 more source

Dead wood retention and the risk of bark beetle attack [PDF]

open access: yes, 2002
Wind-felled Norway spruce trees left for conservation purposes and spruce stems stored as forest fuel may be colonised by the bark beetles Ips typographus and Pityogenes chalcographus (Coleoptera: Scolytidae).
Hedgren, Per Olof
core   +1 more source

Isolation, Expression Profiling, and Regulation via Host Allelochemicals of 16 Glutathione S-Transferases in the Chinese White Pine Beetle, Dendroctonus armandi

open access: yesFrontiers in Physiology, 2020
The Chinese white pine beetle (Dendroctonus armandi) is undoubtedly one of the most important pests causing ecological damage in the Qinling Mountains. When bark beetles invade conifers, they must overcome host tree defenses, including primary resistance
Haiming Gao   +5 more
doaj   +1 more source

Insect communities of late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker   +4 more
wiley   +1 more source

Semiochemical diversity in practice [PDF]

open access: yes, 2012
Reduction of tree mortality caused by bark beetle attacks is not only important for forestry, but is essential for the preservation of biodiversity and forest carbon sinks in the face of climate change. While bark beetle mass trapping (a "pull" approach)
Schlyter, Fredrik   +3 more
core   +1 more source

How can children and young people have a voice in urban treescapes?

open access: yesPeople and Nature, EarlyView.
Abstract Scientific understanding of climate change has, to date, failed to result in sufficient action. This paper proposes that a deficit model of top‐down learning and dissemination in relation to public engagement with science may be part of the problem, particularly when considering the attitudes, values and empowerment of children and young ...
Simon Carr   +10 more
wiley   +1 more source

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