Tree Regeneration Following Fire as Evidence of Timberline Stability in the Colorado Front Range, U.S.A.

1984 ◽  
Vol 16 (4) ◽  
pp. 413 ◽  
Author(s):  
David Shankman
Keyword(s):  
Tree Regeneration ◽  
Colorado Front Range ◽  
Front Range

A field experiment informs expected patterns of conifer regeneration after disturbance under changing climate conditions

2015 ◽  
Vol 45 (11) ◽  
pp. 1607-1616 ◽  
Author(s):  
Monica T. Rother ◽  
Thomas T. Veblen ◽  
Luke G. Furman
Keyword(s):  
Field Experiment ◽  
Pinus Ponderosa ◽  
Ponderosa Pine ◽  
Douglas Fir ◽  
Tree Regeneration ◽  
Colorado Front Range ◽  
Front Range ◽  
Average Growth ◽  
Growth And Survival ◽  
Treatment Type

Climate change may inhibit tree regeneration following disturbances such as wildfire, altering post-disturbance vegetation trajectories. We implemented a field experiment to examine the effects of manipulations of temperature and water on ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings planted in a low-elevation, recently disturbed setting of the Colorado Front Range. We implemented four treatments: warmed only (Wm), watered only (Wt), warmed and watered (WmWt), and control (Co). We found that measures of growth and survival varied significantly by treatment type. Average growth and survival was highest in the Wt plots, followed by the Co, WmWt, and Wm plots, respectively. This general trend was observed for both conifer species, although average growth and survival was generally higher in ponderosa pine than in Douglas-fir. Our findings suggest that warming temperatures and associated drought are likely to inhibit post-disturbance regeneration of ponderosa pine and Douglas-fir in low-elevation forests of the Colorado Front Range and that future vegetation composition and structure may differ notably from historic patterns in some areas. Our findings are relevant to other forested ecosystems in which a warming climate may similarly inhibit regeneration by dominant tree species.

Tree spatial patterns and stand development along the pine-grassland ecotone in the Colorado Front Range

1999 ◽  
Vol 29 (5) ◽  
pp. 575-584 ◽  
Author(s):  
Joy Nystrom Mast ◽  
Thomas T Veblen
Keyword(s):  
Spatial Autocorrelation ◽  
Spatial Patterns ◽  
Tree Regeneration ◽  
Colorado Front Range ◽  
Tree Age ◽  
Stand Development ◽  
Front Range ◽  
Ripley’S K ◽  
Ripley's K ◽  
Tree Spatial Patterns

Patterns of stand development may be interpreted from spatial analyses, based on variables such as tree age and size, together with past records of climate and disturbance. In the present study, our objective is to examine spatial patterns of tree age and size to determine if they are consistent with the episodic pattern of tree regeneration proposed for ponderosa pine (Pinus ponderosa Dougl. ex P. & C. Laws.) and expected changes in tree spatial patterns as cohort patches age. According to our hypothesis, internal patch structure should become less clumped as single cohort patches age due to self-thinning, with few trees attaining dominance in a small patch. In this study, tree spatial patterns in 16 stands of P. ponderosa in the Colorado Front Range are described and related to patterns of stand development. Analytical methods included Ripley's K(t) (a univariate statistic of tree spatial distribution), Ripley's K12(t) (a bivariate statistic of spatial association), and Moran's I (a measure of spatial autocorrelation). Spatial patterns imply establishment of patches of pines followed by self-thinning. Continued stand development results in strong size hierarchies as manifested by stronger spatial autocorrelation of tree age than tree size. Hence, pines exhibit a strong size class hierarchy developed within an even-aged patch.

GOPHERS AS GEOMORPHIC AGENTS IN THE COLORADO FRONT RANGE

2016 ◽  
Author(s):  
Eric W. Winchell ◽  
◽  
Robert S. Anderson ◽  
Elizabeth M. Lombardi ◽  
Daniel F. Doak ◽  
...  
Keyword(s):  
Colorado Front Range ◽  
Front Range

GEOMORPHIC IMPLICATIONS OF THE OROGRAPHIC TRANSITION FROM SNOWMELT TO RAINFALL TRIGGERED EXTREME EVENTS IN THE COLORADO FRONT RANGE

2017 ◽  
Author(s):  
Matthew W. Rossi ◽  
◽  
Robert S. Anderson ◽  
Suzanne P. Anderson ◽  
Gregory E. Tucker
Keyword(s):  
Extreme Events ◽  
Colorado Front Range ◽  
Front Range

GEOLOGIC MAP OF THE MOUNT EVANS 7.5 MINUTE QUADRANGLE, CENTRAL COLORADO FRONT RANGE

2018 ◽  
Author(s):  
Logan A. Powell ◽  
◽  
Asha Mahatma ◽  
Yvette D. Kuiper ◽  
Chester A. Ruleman ◽  
...  
Keyword(s):  
Colorado Front Range ◽  
Front Range ◽  
Geologic Map
Sign in / Sign up

Export Citation Format

Share Document