Bark Beetle Outbreaks in Europe: State of Knowledge and Ways Forward for Management

Current Forestry Reports, Journal Year: 2021, Volume and Issue: 7(3), P. 138 - 165

Published: July 28, 2021

Language: Английский

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Cascading impacts of bark beetle‐caused tree mortality on coupled biogeophysical and biogeochemical processes

Frontiers in Ecology and the Environment, Journal Year: 2012, Volume and Issue: 10(8), P. 416 - 424

Published: Sept. 10, 2012

Recent, large‐scale outbreaks of bark beetle infestations have affected millions hectares forest in western North America, covering an area similar size to that impacted by fire. Bark beetles kill host trees areas, thereby altering water supply, carbon storage, and nutrient cycling forests; for example, the timing amount snow melt may be substantially modified following infestation, which impacts resources many US states. The quality from infested forests also diminished as a result increased export. Understanding on ecosystems is therefore important resource management. Here, we develop conceptual framework coupled biogeophysical biogeochemical processes mountain pine ( Dendroctonus ponderosae ) outbreak lodgepole Pinus contorta Douglas var latifolia weeks decades after highlight future research needs management implications this widespread disturbance event.

Language: Английский

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Forest biogeochemistry in response to drought

Global Change Biology, Journal Year: 2015, Volume and Issue: 22(7), P. 2318 - 2328

Published: Sept. 25, 2015

Trees alter their use and allocation of nutrients in response to drought, changes soil nutrient cycling trace gas flux (N2 O CH4 ) are observed when experimental drought is imposed on forests. In extreme droughts, trees increasingly susceptible attack by pests pathogens, which can lead major the soil. Extreme droughts often more common intense forest fires, causing dramatic storage loss from ecosystems. Changes future manifestation will affect carbon uptake forests, leading feedbacks Earth's climate system. We must improve recognition nature, our ability manage forests face parameterization earth system models for improved predictions world's

Language: Английский

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Bark Beetles Increase Biodiversity While Maintaining Drinking Water Quality

Conservation Letters, Journal Year: 2014, Volume and Issue: 8(4), P. 272 - 281

Published: Dec. 12, 2014

Increasing natural disturbances in conifer forests worldwide complicate political decisions about appropriate land management. In particular, allowing insects to kill trees without intervention has intensified public debate over the dual roles of strictly protected areas sustain ecosystem services and conserve biodiversity. Here we show that after large scale bark beetle Ips typographus infestation spruce Picea abies southeastern Germany, maximum nitrate concentrations runoff used for drinking water increased significantly but only temporarily at headwater scale. Moreover, this major criterion quality remained consistently far below limit recommended by World Health Organization. At same time, biodiversity, including numbers Red-listed species, most taxa across a broad range lineages. Our study provides strong support policy allow disturbance-recovery processes operate unimpeded conifer-dominated mountain forests, especially within areas.

Language: Английский

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Bark beetle infestation impacts on nutrient cycling, water quality and interdependent hydrological effects

Biogeochemistry, Journal Year: 2013, Volume and Issue: 115(1-3), P. 1 - 21

Published: June 12, 2013

Language: Английский

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Natural History and Ecology of Bark Beetles

Elsevier eBooks, Journal Year: 2015, Volume and Issue: unknown, P. 1 - 40

Published: Jan. 1, 2015

Language: Английский

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How do natural disturbances and human activities affect soils and tree nutrition and growth in the Canadian boreal forest?

Environmental Reviews, Journal Year: 2014, Volume and Issue: 22(2), P. 161 - 178

Published: Feb. 25, 2014

There are concerns about the effect of increasing resource extraction and other human activities on soils vegetation boreal zone. The review covers published papers between 1974 2012 to assess effects natural disturbances tree nutrition growth Canadian Changes in soil foliar nutrients following disturbance were also analyzed by meta-analysis. When sufficient replicated studies not available for a given or nutrient, response assessments narrative summaries presented. majority fertilization zone showed positive nitrogen (N) phosphorus (P) either individually combination. Large amounts N may be lost through volatilization fire depending severity frequency fire. This contribute limitation Available P extractable calcium (Ca) magnesium (Mg) increased surface horizons In contrast, decreased harvest. Harvesting had no total inorganic except mixedwoods where organic horizon These potential areas concern responses fertilization. Potassium (K) forest floor did change harvesting; thus, K availability should at risk, since its cycle is rapidly restored. Mercury (Hg) cycling altered as result flooding if return intervals intensities increase. Interactions multiple increase risk nutrient depletions, but there currently little information these interactions Evidence date suggests have been adversely affected localized areas. However, loss considered our management strategies, particularly interact. off-site movement contaminants into atmospheric aquatic ecosystems, addition on-site environmental issues, concern.

Language: Английский

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Persistent reduced ecosystem respiration after insect disturbance in high elevation forests

Ecology Letters, Journal Year: 2013, Volume and Issue: 16(6), P. 731 - 737

Published: March 17, 2013

Amid a worldwide increase in tree mortality, mountain pine beetles (Dendroctonus ponderosae Hopkins) have led to the death of billions trees from Mexico Alaska since 2000. This is predicted important carbon, water and energy balance feedbacks on Earth system. Counter current projections, we show that decadal scale, mortality causes no ecosystem respiration scales several square metres up an 84 km(2) valley. Rather, found comparable declines both gross primary productivity suggesting little change net flux, with transitory recovery 6-7 years after associated increased incorporation leaf litter C into soil organic matter, followed by further decline 8-10. The mechanism impact caused these biotic disturbances consistent reduced input rather than output carbon.

Language: Английский

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Terpenes Tell Different Tales at Different Scales: Glimpses into the Chemical Ecology of Conifer - Bark Beetle - Microbial Interactions

Journal of Chemical Ecology, Journal Year: 2013, Volume and Issue: 40(1), P. 1 - 20

Published: Dec. 12, 2013

Language: Английский

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Simulating coupled carbon and nitrogen dynamics following mountain pine beetle outbreaks in the western United States

Journal of Geophysical Research Atmospheres, Journal Year: 2011, Volume and Issue: 116(G4)

Published: Oct. 31, 2011

[1] Insect outbreaks are major ecosystem disturbances, affecting a similar area as forest fires annually across North America. Tree mortality caused by bark beetle alters carbon cycling in the first several years following disturbance reducing stand-level primary production and increasing amount of dead organic matter available for decomposition. The few studies biogeochemical have shown range impacts from small responses net fluxes after severe outbreak to large areas that sources atmosphere decades. To gain more understanding about causes this responses, we used an model assess different conditions on coupled nitrogen cycling. We modified Community Land Model with prognostic include prescribed outbreaks. then compared control simulations (without outbreak) various levels severity, durations outbreak, snagfall dynamics quantify flux recovery rates productivity realistic conditions. Our illustrate that, given variability conditions, wide can occur. fraction trees killed, delay snagfall, rate, management decisions harvesting killed will postoutbreak decades stocks up 100 years.

Language: Английский

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