Observations on natural regeneration in ponderosa pine following a prescribed fire in Arizona /

Sackett, Stephen S.; Forest, Rocky Mountain; Station, Range Experiment

doi:10.5962/bhl.title.98999

Cited by 29 publications

(24 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The average number of years from the innermost ring to the pith was 4.4 years (SD=3.3; n =154). Our age estimates do not account for the time required for seedlings to grow to a 40 cm height, which can range from 3 to 10 years (Sackett 1984; Cormier 1990) in this area.…”

Section: Methodsmentioning

confidence: 99%

108 years of change in spatial pattern following selective harvest of a Pinus ponderosa stand in northern Arizona, USA

Meador

Moore

Bakker

et al. 2009

J Vegetation Science

View full text Add to dashboard Cite

Questions: How did an initial tree harvest in 1894 influence the spatial and temporal patterns of Pinus ponderosa recruitment? How do these patterns compare to our understanding of P. ponderosa stand dynamics prior to Euro‐American settlement? How might spatial pattern information, particularly with respect to patch characteristics, inform current restoration and management practices? Location: A 2.59‐ha permanent sample plot in the Fort Valley Experimental Forest, Flagstaff, Arizona. The plot was selectively harvested in 1894 and measured in 1909 and 2002. Methods: We used historical stem‐map and ledger data, contemporary data, and dendrochronological techniques to reconstruct stand structure (tree size, age, location) in three scenarios: (1) unharvested (1909), (2) harvested (1909), and (3) contemporary (2002). We used Clark and Evans' R, Ripley's K(t) univariate analysis, and correlogram analysis to assess the spatial pattern in each scenario. We also used Ripley's K12(t) bivariate analysis and tree age data to examine spatial and temporal recruitment patterns as observed in the contemporary scenario. Results and Conclusions: The unharvested stand was aggregated at scales up to 28 m. The selective harvest accentuated the spatial patchiness of the stand in 1909 and changed spatial patterns by homogenizing tree size within patches. By 2002, the stand was a single patch dominated by small trees. Post‐harvest recruitment patterns were not spatially random; Pinus seedlings initially established in natural grass openings and then proceeded to fill‐in stump patches created by harvesting. Knowledge of spatial pattern should be explicitly incorporated into restoration activities in these forests.

show abstract

Section: Methodsmentioning

confidence: 99%

108 years of change in spatial pattern following selective harvest of a Pinus ponderosa stand in northern Arizona, USA

Meador

Moore

Bakker

et al. 2009

J Vegetation Science

View full text Add to dashboard Cite

show abstract

“…Average summer precipitation is 20.8 cm. Daily mean temperatures range from 5 to 17° C throughout the year (Sackett 1980).…”

Section: Methodsmentioning

confidence: 99%

Slash Pile Burning Effects on Soil Biotic and Chemical Properties and Plant Establishment: Recommendations for Amelioration

Korb

Johnson

Covington

2004

Restoration Ecology

143

125

View full text Add to dashboard Cite

Ponderosa pine forest restoration consists of thinning trees and reintroducing prescribed fire to reduce unnaturally high tree densities and fuel loads to restore ecosystem structure and function. A current issue in ponderosa pine restoration is what to do with the large quantity of slash that is created from thinning dense forest stands. Slash piling burning is currently the preferred method of slash removal because it allows land managers to burn large quantities of slash in a more controlled environment in comparison with broadcast burning slash. However burning slash piles is known to have adverse effects such as soil sterilization and exotic species establishment. This study investigated the effects of slash pile burning on soil biotic and chemical variables and early herbaceous succession on burned slash pile areas. Slash piles were created following tree thinning in two adjacent approximately 20-ha ponderosa pine (Pinus ponderosa) restoration treatments in the Coconino National Forest near Flagstaff, Arizona. We selected 30 burned slash pile areas and sampled across a gradient of the burned piles for arbuscular mycorrhizal (AM) propagule densities, the soil seed bank, and soil chemical properties. In addition, we established five 1-m 2 plots in each burned pile to quantify the effect of living soil (AM inoculum) and seeding amendments on early herbaceous succession in burned slash pile areas. The five treatments consisted of a control (no treatment), living soil (AM inoculum) amendment, sterilized soil (no AM inoculum) amendment, seed amendment, and a seed/soil (AM inoculum) amendment. Slash pile burning nearly eliminated populations of viable seeds and AM propagules and altered soil chemical properties. Amending scars with native seeds increased the cover of native forbs and grasses. Furthermore adding both seed and living soil more than doubled total native plant cover and decreased ruderal and exotic plant cover. These results indicate that seed/soil amendments that increase native forbs and grasses may enhance the rate of succession in burned slash pile areas by allowing these species to outcompete exotic and ruderal species also establishing at the site through natural regeneration.

show abstract

“…Natural regeneration pulses after disturbance are well-documented (Bailey & Covington, 2002;Fajardo, Graham, Goodburn, & Fiedler, 2007), and in addition to seed crop periodicity can be attributed to changes in forest floor attributes, soil moisture, canopy cover, and competing vegetation among other factors. Consequently, successful regeneration is aided by the coincidental timing of good seed crops with favorable seedbed conditions (Heidmann, Johnsen, Cole, & Cullum, 1982;Sackett, 1984;Tappeiner & McDonald, 1996). Germination of conifer seeds has been positively correlated with bare mineral soil or a thin forest floor, but subsequent seedling survival is not necessarily enhanced by bare soil microsites (Stark, 1965).…”

Section: Introductionmentioning

confidence: 98%

Influences of Mechanized Thinning and Prescribed Fire on Natural Regeneration in an Uneven-Aged Jeffrey Pine Stand

Salverson

Walker

Fecko

et al. 2011

Journal of Sustainable Forestry

View full text Add to dashboard Cite

Thinnings using cut-to-length or whole-tree harvesting systems followed by underburning were evaluated for their effects on seedling and sapling demography in a pure, uneven-aged Jeffrey pine (Pinus jeffreyi Grev. & Balf.) stand containing a minor component of California white fir (Abies concolor var. lowiana [Gord.] Lemm.). Depression of seedling counts due to forest floor disturbance associated with thinning was followed by a recovery largely confined to Jeffrey pine in the whole-tree treatment where final seedling counts exceeded those found initially. The postburn substrate was more favorable for establishment of Jeffrey pine than white fir seedlings, and the largest increase in seedling counts between the initial and final inventories occurred in the burned portion of the whole-tree treatment. Live sapling losses from thinning were greatest in the cut-to-length treatment, while underburning induced complete sapling mortality. Absent treatment, several stand and site variables influenced seedling and sapling abundance, prominent among them a propensity for mahala mat (Ceanothus prostratus Benth.) to elevate counts of white fir within 655 both size classes. These results provide land managers insight into the impacts of six combinations of thinning and burning treatment on natural regeneration in eastern Sierra Nevada Jeffrey pine and similar dry site forest types.

show abstract

Observations on natural regeneration in ponderosa pine following a prescribed fire in Arizona /

Cited by 29 publications

References 3 publications

108 years of change in spatial pattern following selective harvest of a Pinus ponderosa stand in northern Arizona, USA

108 years of change in spatial pattern following selective harvest of a Pinus ponderosa stand in northern Arizona, USA

Slash Pile Burning Effects on Soil Biotic and Chemical Properties and Plant Establishment: Recommendations for Amelioration

Influences of Mechanized Thinning and Prescribed Fire on Natural Regeneration in an Uneven-Aged Jeffrey Pine Stand

Contact Info

Product

Resources

About