Genetic Differentiation of Douglas-Fir Populations from the Northern Rocky Mountains

Ecology ◽  
1978 ◽  
Vol 59 (6) ◽  
pp. 1264-1270 ◽  
Author(s):  
Gerald E. Rehfeldt
Keyword(s):  
Genetic Differentiation ◽  
Rocky Mountains ◽  
Douglas Fir ◽  
Northern Rocky Mountains

scholarly journals Assessing post-fire Douglas-fir mortality and Douglas-fir beetle attacks in the northern Rocky Mountains

2007 ◽  
Author(s):  
Sharon Hood ◽  
Barbara Bentz ◽  
Ken Gibson ◽  
Kevin Ryan ◽  
Gregg DeNitto
Keyword(s):  
Rocky Mountains ◽  
Douglas Fir ◽  
Northern Rocky Mountains

Postfire survival in Douglas-fir and lodgepole pine: comparing the effects of crown and bole damage

1986 ◽  
Vol 16 (6) ◽  
pp. 1175-1179 ◽  
Author(s):  
David L. Peterson ◽  
Michael J. Arbaugh
Keyword(s):  
Rocky Mountains ◽  
Regression Models ◽  
Lodgepole Pine ◽  
Late Summer ◽  
Important Variable ◽  
Douglas Fir ◽  
Northern Rocky Mountains ◽  
Logistic Regression Models ◽  
Crown Scorch ◽  
Survival Patterns

Survival patterns after late summer wildfires were evaluated for Douglas-fir and lodgepole pine in the northern Rocky Mountains. Crown scorch was the most important variable for predicting postfire survival and variables representing bole damage improved the significance of logistic regression models for both species. Crown scorch and basal scorch were the best combination of variables for predicting survival in lodgepole pine. Crown scorch and insect damage were the best combination of variables for predicting survival in Douglas-fir. Postfire survival of lodgepole pine, which has relatively thin bark, was more sensitive than Douglas-fir to variables that quantified bole damage.

Spatial databases for the geology of the northern Rocky Mountains - Idaho, Montana, and Washington

2005 ◽  
Author(s):  
Michael L. Zientek ◽  
Pamela D. Derkey ◽  
Robert J. Miller ◽  
J. Douglas Causey ◽  
Arthur A. Bookstrom ◽  
...  
Keyword(s):  
Rocky Mountains ◽  
Spatial Databases ◽  
Northern Rocky Mountains

Guide to geophysical data for the northern Rocky Mountains and adjacent areas, Idaho, Montana, Washington, Oregon, and Wyoming

2004 ◽  
Author(s):  
Edward A. Mankinen ◽  
Thomas G. Hildenbrand ◽  
Michael L. Zientek ◽  
Stephen E. Box ◽  
Arthur A. Bookstrom ◽  
...  
Keyword(s):  
Rocky Mountains ◽  
Geophysical Data ◽  
Northern Rocky Mountains

Holocene climate recorded by magnetic properties of lake sediments in the Northern Rocky Mountains, USA

The Holocene ◽  
2019 ◽  
Vol 30 (3) ◽  
pp. 479-484
Author(s):  
Daniel P Maxbauer ◽  
Mark D Shapley ◽  
Christoph E Geiss ◽  
Emi Ito
Keyword(s):  
Grain Size ◽  
Magnetic Properties ◽  
Rocky Mountains ◽  
Future Research ◽  
Magnetic Minerals ◽  
Holocene Climate ◽  
Northern Rocky Mountains ◽  
The North ◽  
Lake Bottom ◽  
Northern Rockies

We present two hypotheses regarding the evolution of Holocene climate in the Northern Rocky Mountains that stem from a previously unpublished environmental magnetic record from Jones Lake, Montana. First, we link two distinct intervals of fining magnetic grain size (documented by an increasing ratio of anhysteretic to isothermal remanent magnetization) to the authigenic production of magnetic minerals in Jones Lake bottom waters. We propose that authigenesis in Jones Lake is limited by rates of groundwater recharge and ultimately regional hydroclimate. Second, at ~8.3 ka, magnetic grain size increases sharply, accompanied by a drop in concentration of magnetic minerals, suggesting a rapid termination of magnetic mineral authigenesis that is coeval with widespread effects of the 8.2 ka event in the North Atlantic. This association suggests a hydroclimatic response to the 8.2 ka event in the Northern Rockies that to our knowledge is not well documented. These preliminary hypotheses present compelling new ideas that we hope will both highlight the sensitivity of magnetic properties to record climate variability and attract more work by future research into aridity, hydrochemical response, and climate dynamics in the Northern Rockies.

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