Egg loss among spruce grouse inhabiting lodgepole pine forests

1984 ◽  
Vol 62 (6) ◽  
pp. 1034-1037 ◽  
Author(s):  
David A. Boag ◽  
Stéphan G. Reebs ◽  
Michael A. Schroeder
Keyword(s):  
Lodgepole Pine ◽  
Pine Forests ◽  
Red Squirrels

The loss of eggs from clutches deposited in simulated and natural nests of spruce grouse was investigated during the spring of 1983 in lodgepole pine forests of southwestern Alberta. Two-thirds of all clutches, both in simulated and natural nests, were partially or completely lost. Density of simulated nests had no impact on proportional loss. Evidence suggests that nests under a conifer-dominated canopy, in an area lacking extensive shrub coverage, and at distances greater than 15 m from trails were the most vulnerable to egg predators. We conclude that red squirrels were the principle predator destroying these clutches.

scholarly journals A Possible Role for Red Squirrels in Structuring Breeding Bird Communities in Lodgepole Pine Forests

The Condor ◽  
2006 ◽  
Vol 108 (1) ◽  
pp. 232-238 ◽  
Author(s):  
Adam M. Siepielski
Keyword(s):  
Nest Predation ◽  
Pinus Contorta ◽  
Lodgepole Pine ◽  
Bird Communities ◽  
Pine Forests ◽  
Tamiasciurus Hudsonicus ◽  
Breeding Bird ◽  
Bird Abundance ◽  
Red Squirrels ◽  
Cavity Nesters

Abstract Nest predation is thought to play an important role in structuring certain breeding bird communities. One potential consequence of nest predation is lower recruitment in breeding birds, which may be manifested as lower breeding bird abundance. Lodgepole pine (Pinus contorta ssp. latifolia) forests east and west of the Rocky Mountains became isolated following glacial retreat 12 000 years ago and differ in whether or not red squirrels (Tamiasciurus hudsonicus), which are a key nest predator, are present. Breeding bird abundance in lodgepole pine forests was compared between four ranges with red squirrels and four ranges without red squirrels. Species grouped into canopy and understory nesting guilds were, on average, two and three times more abundant, respectively, in forest ranges without red squirrels than in ranges with red squirrels; no statistically significant differences were found for midstory, ground, or cavity nesters. These results suggest that geographic variation in the presence or absence of red squirrels is likely important in structuring breeding bird communities in lodgepole pine forests across the landscape.

scholarly journals Resilience of Ponderosa and Lodgepole Pine Forests to Mountain Pine Beetle Disturbance and Limited Regeneration

2015 ◽  
Vol 61 (4) ◽  
pp. 689-702 ◽  
Author(s):  
Jennifer S. Briggs ◽  
Todd J. Hawbaker ◽  
Don Vandendriesche
Keyword(s):  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Pine Forests ◽  
Mountain Pine ◽  
Pine Beetle

scholarly journals Do mountain pine beetle outbreaks change the probability of active crown fire in lodgepole pine forests?

2011 ◽  
Vol 81 (1) ◽  
pp. 3-24 ◽  
Author(s):  
Martin Simard ◽  
William H. Romme ◽  
Jacob M. Griffin ◽  
Monica G. Turner
Keyword(s):  
Mountain Pine Beetle ◽  
Lodgepole Pine ◽  
Pine Forests ◽  
Crown Fire ◽  
Mountain Pine ◽  
Pine Beetle

Importance of the canopy in determining on-going regeneration and stand successional development in lodgepole pine forests

2018 ◽  
Vol 29 (2) ◽  
pp. 213-225 ◽  
Author(s):  
Benoit Gendreau-Berthiaume ◽  
S. Ellen Macdonald ◽  
Jacob John Stadt
Keyword(s):  
Lodgepole Pine ◽  
Pine Forests ◽  
Successional Development

Simulated fire behaviour in young, postfire lodgepole pine forests

2017 ◽  
Vol 26 (10) ◽  
pp. 852 ◽  
Author(s):  
Kellen N. Nelson ◽  
Monica G. Turner ◽  
William H. Romme ◽  
Daniel B. Tinker
Keyword(s):  
Pinus Contorta ◽  
Stand Structure ◽  
Lodgepole Pine ◽  
Pine Forests ◽  
Fuel Moisture ◽  
Crown Fire ◽  
Fire Behaviour ◽  
Fire Initiation ◽  
Moisture Conditions ◽  
Simulated Fire

Early-seral forests are expanding throughout western North America as fire frequency and annual area burned increase, yet fire behaviour in young postfire forests is poorly understood. We simulated fire behaviour in 24-year-old lodgepole pine (Pinus contorta var. latifolia) stands in Yellowstone National Park, Wyoming, United States using operational models parameterised with empirical fuel characteristics, 50–99% fuel moisture conditions, and 1–60kmhr−1 open winds to address two questions: [1] How does fireline intensity, and crown fire initiation and spread vary among young, lodgepole pine stands? [2] What are the contributions of fuels, moisture and wind on fire behaviour? Sensitivity analysis indicated the greatest contributors to output variance were stand structure mediated wind attenuation, shrub fuel loads and 1000-h fuel moisture for fireline intensity; crown base height for crown fire initiation; and crown bulk density and 1-h fuel moisture for crown fire spread. Simulation results predicted crown fire (e.g. passive, conditional or active types) in over 90% of stands at 50th percentile moisture conditions and wind speeds greater than 3kmhr−1. We conclude that dense canopy characteristics heighten crown fire potential in young, postfire lodgepole pine forests even under less than extreme wind and fuel moisture conditions.

The nitrogen cycle in lodgepole pine forests, southeastern Wyoming

1985 ◽  
Vol 1 (3) ◽  
pp. 257-275 ◽  
Author(s):  
Timothy J. Fahey ◽  
Joseph B. Yavitt ◽  
John A. Pearson ◽  
Dennis H. Knight
Keyword(s):  
Nitrogen Cycle ◽  
Lodgepole Pine ◽  
Pine Forests

scholarly journals Numerical Simulation of Crown Fire Hazard Immediately after Bark Beetle-Caused Mortality in Lodgepole Pine Forests

2012 ◽  
Vol 58 (2) ◽  
pp. 178-188 ◽  
Author(s):  
Chad Hoffman ◽  
Penelope Morgan ◽  
William Mell ◽  
Russell Parsons ◽  
Eva K. Strand ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Bark Beetle ◽  
Lodgepole Pine ◽  
Fire Hazard ◽  
Pine Forests ◽  
Crown Fire
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