Title:

Pre-treatment cruise of the Goosenest Adaptive Management Area Study, Siskiyou County, California from 1995-1996

Author(s):

Ritchie, Martin W.; Looney, Christopher E.

Publication Year:

2024

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Ritchie, Martin W.; Looney, Christopher E. 2024. Pre-treatment cruise of the Goosenest Adaptive Management Area Study, Siskiyou County, California from 1995-1996. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2024-0056

Abstract:

This data publication contains observations representing the initial conditions (prior to experimental treatment application) for trees in the Goosenest Adaptive Management Area study in northeastern California. The intent was to quickly obtain basal area per acre and trees per acre metrics for twenty 100-acre treatment units in 1995 and 1996. This interdisciplinary long-term study is now essentially complete as the entire area burned over in the Antelope Fire in August of 2021. The original intent of the study was to investigate responses to an array of treatments conceived to accelerate late-seral characteristics in a 70-year-old cut-over area of the Klamath National Forest. Variable-radius (20 BAF) plots were all spatially referenced using an established array of grid points indexed to the UTM. These monumented grid locations were on a 100-meter square spacing. For this cruise we increased the sample size by placing some plots half-way between grid monuments. While the monuments represent a known location to approximately 6-inch precision, the "in-between" plots were paced in using a hand compass so they have a much lower (unknown) precision. For the purposes of this effort, it was decided that we did not need precise tree-per-acre density so we estimated tree diameters to a 4-inch diameter class, rather than the more customary measurement of tree diameter to the nearest 0.1-inch. Data include basal area for each of five species (ponderosa pine, true fir, sugar pine, incense-cedar and other conifers), by 4-inch diameter classes for all grid points and "in-between" plots for each of the twenty 100-acre treatment units. Trees per acre for each of the species and diameter classes are also provided. Additionally, scans of the original field sheets are also included. Treatments applied after this data collection effort by random selection were: control (no subsequent treatments), bigtree (largest trees retained regardless of species or other factors), pineonly (larger trees retained favoring retention of pine), and pinewfire (pineonly treatment followed by application of prescribed fire).

Keywords:

biota; environment; Forest & Plant Health; Inventory, Monitoring, & Analysis; Pinus ponderosa; Abies concolor; basal area; trees per acre; California; Siskiyou County; Goosenest Adaptive Management Area

Related publications:

• Ritchie, Martin W. 1997. Minimizing the rounding error from point sample estimates of tree frequencies. Western Journal of Applied Forestry. 12(4): 108-114. https://doi.org/10.1093/wjaf/12.4.108
• Ritchie, Martin W. 2005. Ecological research at the Goosenest Adaptive Management Area in northeastern California. General Technical Report. PSW-GTR-192. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 121 p. https://doi.org/10.2737/PSW-GTR-192

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