Impact of Dwarf Mistletoe on Jack Pine Forests in Manitoba

Plant Disease ◽  
1992 ◽  
Vol 76 (12) ◽  
pp. 1256 ◽  
Author(s):  
F. A. Baker
Keyword(s):  
Jack Pine ◽  
Pine Forests ◽  
Dwarf Mistletoe ◽  
Jack Pine Forests

Quantifying the effects of climate change and harvesting on carbon dynamics of boreal aspen and jack pine forests using the TRIPLEX-Management model

2012 ◽  
Vol 281 ◽  
pp. 152-162 ◽  
Author(s):  
Weifeng Wang ◽  
Changhui Peng ◽  
Daniel D. Kneeshaw ◽  
Guy R. Larocque ◽  
Xinzhang Song ◽  
...  
Keyword(s):  
Climate Change ◽  
Carbon Dynamics ◽  
Jack Pine ◽  
Pine Forests ◽  
Management Model ◽  
Jack Pine Forests

The Epidemiology of the Swaine Jack-pine Sawfly, Neodiprion Swainei Midd.

1970 ◽  
Vol 46 (2) ◽  
pp. 126-133 ◽  
Author(s):  
J. M. McLeod
Keyword(s):  
Tree Mortality ◽  
Jack Pine ◽  
Pine Forests ◽  
Population Increase ◽  
First Year ◽  
Pine Sawfly ◽  
Jack Pine Forests ◽  
Commercially Important

Neodiprion swainei, a defoliating sawfly specific to jack pine, has destroyed thousands of acres of commercially important jack-pine forests in recent years. This sawfly can kill trees within 4 years of the start of a population increase. Outbreaks are usually found in foci in poorer jack-pine sites on outwash plains. Tree mortality occurs after complete defoliation of the previous years' foliage, combined with severe defoliation of the current year's foliage. Tree mortality starts in the first year after particularly severe defoliation and may be cumulative to 5 years; thus, detection of the insect in a stand should warrant increased watchfulness.Outbreaks may follow at intervals of about 8 years. Hazard areas for Quebec and Ontario are defined.

Extreme cold temperatures and survival of overwintering and germinated Arceuthobium americanum seeds

2004 ◽  
Vol 34 (1) ◽  
pp. 174-183 ◽  
Author(s):  
J P Brandt ◽  
Y Hiratsuka ◽  
D J Pluth
Keyword(s):  
Pinus Banksiana ◽  
Exposure Period ◽  
Jack Pine ◽  
Western Canada ◽  
Dwarf Mistletoe ◽  
Cold Temperatures ◽  
Arceuthobium Americanum ◽  
Northern Areas ◽  
Jack Pine Forests ◽  
Extreme Cold

Lodgepole pine dwarf mistletoe (Arceuthobium americanum Nutt. ex Engelm.) is one of the most damaging pathogens of jack pine (Pinus banksiana Lamb.) in western Canada. Jack pine forests in the colder, more northerly areas, however, are free of dwarf mistletoe, suggesting that the pathogen is limited by low temperature. The effect of extreme cold temperatures on germination rates of overwintering dwarf mistletoe seeds and survival of dwarf mistletoe germinants was evaluated. Germinative ability of overwintering seeds increased with increasing temperatures between –39 and –35 °C, regardless of seed source. Exposure period also strongly influenced germination rates. Exposure to temperatures near –38, –46, or –53 °C for 96 or 144 h was almost always lethal. At –37 °C, germination was greater after 48 h than after 96 h, although it was still significantly lower than in the controls. Temperatures down to –6 °C in late spring did not reduce germinant survival. Overall, these results may explain the absence of dwarf mistletoe from northern areas commonly exposed to periods in winter with minimum temperatures below about –40 °C. These areas are potentially at risk from the pathogen if the climate of Canada's northern interior continues to warm as it has over the last several decades.

Resource Heterogeneity Relationship with Understory Vegetation in Post-fire Xeric Jack Pine Forests

Ecosystems ◽  
2018 ◽  
Vol 22 (2) ◽  
pp. 401-415 ◽  
Author(s):  
Sanatan Das Gupta ◽  
Bradley D. Pinno ◽  
Ruth C. Errington
Keyword(s):  
Jack Pine ◽  
Understory Vegetation ◽  
Pine Forests ◽  
Resource Heterogeneity ◽  
Jack Pine Forests

Controls on evapotranspiration from jack pine forests in the Boreal Plains Ecozone

2019 ◽  
Vol 34 (4) ◽  
pp. 927-940 ◽  
Author(s):  
Mahtab Nazarbakhsh ◽  
Andrew M. Ireson ◽  
Alan G. Barr
Keyword(s):  
Jack Pine ◽  
Pine Forests ◽  
Boreal Plains ◽  
Jack Pine Forests
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