Composition and Elevation of Spruce Forests Affect Susceptibility to Bark Beetle Attacks: Implications for  Forest Management

Faccoli, Massimo; Bernardinelli, Iris

doi:10.3390/f5010088

Cited by 40 publications

(41 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This heterogeneous natural system is more resilient than homogeneous systems, as a significant portion of the biological legacies of that particular ecosystem remain intact [41][42][43] and this allows it to "remember" genetically, compositionally, and structurally pre-disturbance conditions of the stand to build a new complex ecosystem [43,44] which could be more adaptable to a changing climate [41,45]. Therefore, stands that have arisen after MPB-attack may have enhanced resilience to both biotic and abiotic stressors, as well as could significantly reduce susceptibility to future MPB infestation [43,46]. When managing MPB-attacked stands it is important to set priorities with respect to which stands should be visited first.…”

Section: Post Beetle Stand Dynamics Of Immature Standsmentioning

confidence: 99%

Impact of a Mountain Pine Beetle Outbreak on Young Lodgepole Pine Stands in Central British Columbia

Dhar

Balliet

Runzer

et al. 2015

Forests

View full text Add to dashboard Cite

Abstract:The current mountain pine beetle (MPB) (Dendroctonous ponderosae Hopkins) epidemic has severely affected pine forests of Western Canada and killed millions of hectares of lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) forest. Generally, MPB attack larger and older (diameter > 20 cm or >60 years of age) trees, but the current epidemic extends this limit with attacks on even younger and smaller trees. The study's aim was to investigate the extent of MPB attack in young pine stands and its possible impact on stand dynamics. Although MPB attacks were observed in trees as small as 7.5 cm diameter at breast height (DBH) and as young as 13 years old, the degree of MPB attack (percent stems ha −1 ) increased with increasing tree diameter and age class (13-20, 21-40, 41-60, and 61-80 years old) (6.4%, 49.4%, 62.6%, and 69.5% attack, respectively, by age class) which is greater than that reported from previous epidemics for stands of this age. The mean density of surviving residual structure varied widely among age classes and ecological subzones. Depending on age class, 65% to 77% of the attacked stands could contribute to mid-term timber supply. The surviving residual structure of young stands offers an opportunity to mitigate the effects of MPB-attack on future timber supply, increase age class diversity, and enhance ecological resilience in younger stands. OPEN ACCESSForests 2015, 6 3484

show abstract

Section: Post Beetle Stand Dynamics Of Immature Standsmentioning

confidence: 99%

Impact of a Mountain Pine Beetle Outbreak on Young Lodgepole Pine Stands in Central British Columbia

Dhar

Balliet

Runzer

et al. 2015

Forests

View full text Add to dashboard Cite

show abstract

“…) with economic consequences in pest species (Yamanaka et al. , Faccoli and Bernardinelli ) as well as potential implications for conservation (Van Dyck et al. ).…”

Section: Introductionmentioning

confidence: 99%

Local adaptation of photoperiodic plasticity maintains life cycle variation within latitudes in a butterfly

Lindestad

Wheat

Nylin

et al. 2018

Ecology

115

View full text Add to dashboard Cite

The seasonal cycle varies geographically and organisms are under selection to express life cycles that optimally exploit their spatiotemporal habitats. In insects, this often means producing an annual number of generations (voltinism) appropriate to the local season length. Variation in voltinism may arise from variation in environmental factors (e.g., temperature or photoperiod) acting on a single reaction norm shared across populations, but it may also result from local adaptation of reaction norms. However, such local adaptation is poorly explored at short geographic distances, especially within latitudes. Using a combination of common‐garden rearing and life cycle modeling, we have investigated the causal factors behind voltinism variation in Swedish populations of the butterfly Pararge aegeria, focusing on a set of populations that lie within a single degree of latitude but nonetheless differ in season length and voltinism. Despite considerable differences in ambient temperature between populations, modeling suggested that the key determinant of local voltinism was in fact interpopulation differences in photoperiodic response. These include differences in the induction thresholds for winter diapause, as well as differences in photoperiodic regulation of larval development, a widespread but poorly studied phenomenon. Our results demonstrate previously neglected ways that photoperiodism may mediate insect phenological responses to temperature, and emphasize the importance of local adaptation in shaping phenological patterns in general, as well as for predicting the responses of populations to changes in climate.

show abstract

“…We cannot infer how a mosaic of fire injuries that included more lightly injured and uninjured ponderosa pines would have influenced the course of attacks relative to lodgepole pine. Other factors arising from elevation differences [46], slope [47], past biotic or abiotic disturbances [48,49], forest management and stand structure [50], and varying levels of root damage experienced during the fire [5] may contribute to differential susceptibility between these two tree species.…”

Section: Discussionmentioning

confidence: 99%

Mountain Pine Beetle Dynamics and Reproductive Success in Post-Fire Lodgepole and Ponderosa Pine Forests in Northeastern Utah

et al. 2016

View full text Add to dashboard Cite

Fire injury can increase tree susceptibility to some bark beetles (Curculionidae, Scolytinae), but whether wildfires can trigger outbreaks of species such as mountain pine beetle (Dendroctonus ponderosae Hopkins) is not well understood. We monitored 1173 lodgepole (Pinus contorta var. latifolia Doug.) and 599 ponderosa (Pinus ponderosa Doug. ex Law) pines for three years post-wildfire in the Uinta Mountains of northeastern Utah in an area with locally endemic mountain pine beetle. We examined how the degree and type of fire injury influenced beetle attacks, brood production, and subsequent tree mortality, and related these to beetle population changes over time. Mountain pine beetle population levels were high the first two post-fire years in lodgepole pine, and then declined. In ponderosa pine, populations declined each year after initial post-fire sampling. Compared to trees with strip or failed attacks, mass attacks occurred on trees with greater fire injury, in both species. Overall, a higher degree of damage to crowns and boles was associated with higher attack rates in ponderosa pines, but additional injury was more likely to decrease attack rates in lodgepole pines. In lodgepole pine, attacks were initially concentrated on fire-injured trees, but during subsequent years beetles attacked substantial numbers of uninjured trees. In ponderosa pine, attacks were primarily on injured trees each year, although these stands were more heavily burned and had few uninjured trees. In total, 46% of all lodgepole and 56% of ponderosa pines underwent some degree of attack. Adult brood emergence within caged bole sections decreased with increasing bole char in lodgepole pine but increased in ponderosa pine, however these relationships did not scale to whole trees. Mountain pine beetle populations in both tree species four years post-fire were substantially lower than the year after fire, and wildfire did not result in population outbreaks.

show abstract

Composition and Elevation of Spruce Forests Affect Susceptibility to Bark Beetle Attacks: Implications for Forest Management

Cited by 40 publications

References 39 publications

Impact of a Mountain Pine Beetle Outbreak on Young Lodgepole Pine Stands in Central British Columbia

Impact of a Mountain Pine Beetle Outbreak on Young Lodgepole Pine Stands in Central British Columbia

Local adaptation of photoperiodic plasticity maintains life cycle variation within latitudes in a butterfly

Mountain Pine Beetle Dynamics and Reproductive Success in Post-Fire Lodgepole and Ponderosa Pine Forests in Northeastern Utah

Contact Info

Product

Resources

About