The following Excel files are the primary lab reports from the Ministry of Forests analytical laboratory. At the time of this study, the lab reports would only use a minimal sample identification consisting of a sequential number (1, 2 … etc.) for each sample in a job. The submitter had to maintain their own records to link that sequential number in the report to something more meaningful – in this case, the tag number on the litterbag, the litter type, and the plot number – as recorded in my consolidated file Kenneth Creek Litterbag Sample Numbering.xlsx

• T458FINL.xls [Most of the data in this file – samples 7-31 – are for litter trap samples in the fall 1997 collection, but the first 6 are triplicate analyses of the initial pine needle litter materials used in the litterbags: #1-3 are Control, and #4-6 are ON2.]
• T483FINL.xls [Litterbags recovered May 5, 1998]
• T508FINL1.xls [Samples 19-42 are from the Kenneth Creek litterbags, recovered Oct. 20, 1998; samples 1-18 are from the EP 1148 (Bobtail) litterbag experiment, recovered Oct. 1998]
• T551FINL.xls [Litterbags recovered April 30, 1999]
• T589F.xls [Litterbags recovered October 12, 1999]
• T613FINL.xls [Litterbags recovered May 4, 2000]
• T650FINL.xls [Litterbags recovered October 11, 2000]
• T700FINL.xls [Litterbags recovered September 27 – October 5, 2001]
• T765FINL.xls [Litterbags recovered September 21, 2002]
• T830FINL.xls [Litterbags recovered October 15, 2003]
• T901FINL.xls [Litterbags recovered October 1, 2004]

Two files contain the complete records of initial litter materials and recovered litterbag contents, with some limited summaries of mean values by treatment and recovery date:

• BowDcomp.xls [complete record of weights of recovered litterbag contents in “Raw Data” tab]
• Bowron Litterbag Chemistry (update Aug 2010).xls [complete compilation of chemical analyses of initial and recovered litterbag materials]

Item is the manuscript by Sanborn and Brockley entitled "Litterfall in a lodgepole pine fertilization experiment, Sub-Boreal Spruce zone, central interior British Columbia", which was submitted to the Canadian Journal of Forest Research but not accepted.

Includes the following data sets from Kenneth Creek installation litterfall collection:

Traps were emptied 3 times per year (May, August, October) and the weights of the sorted contents of each trap were reported for each collection interval in these files:

• BOWAUG95.XLS
• BOWOCT95.XLS
• BOWMAY96.XLS
• BOWAUG96.XLS
• BOWOCT96.XLS
• BOWMAY97.XLS
• BOWAUG97.XLS
• BOWOCT97.XLS
• BOWMAY98.XLS
• BOWAUG98.XLS
• BOWOCT98.XLS
• BOWMAY99.XLS

Sorted litter trap materials – composited for each plot and sampling date – were submitted annually to the Ministry of Forests and Range Analytical Chemistry Laboratory for analysis. The following files provide the link between the sequential sample numbers used in the lab result reports and the records of sampling date, plot number, and material type:

• BOW95LIS.xls
• BOW96LIS.xls
• BOW97LIS.xls
• BOW98LIS.XLS
• BOW99LIS.XLS

The following files have the original lab reports in the “Raw Data” pane, and the lab data merged with the sample identification information in the “Labelled” pane:

• T368finl (May -Oct 1995).xls [August & October 1995 litter collections]
• T384finl (Oct 1995-May 1996).xls [May 1996 litter collection]
• T424finl (May-Oct 1996).xls [August & October 1996 litter collections]
• T442finl (Oct 1996-May 1997).xls [May 1997 litter collection; sample numbers shown in red indicate small samples, so micronutrient data may have lower accuracy]
• T458finl (May-Aug 1997.xls [August 1997 litter collection; samples #1-6 are the initial pine needle litter materials used in the companion litterbag decomposition experiment, with #1-3 = Control, #4-6 = ON2]
• T463finl (Aug-Oct 1997).xls [October 1997 litter collection]
• T488FINL (Oct 1997-May 1998).xls [May 1998 litter collection]
• T518finl (May-Aug 1998).xls [August 1998 litter collection]
• T530finl (Aug-Oct 1998).xls [October 1998 litter collection]
• T568FINL (Oct 1998-May 1999).xls [May 1999 litter collection]

Four files have annual summaries of litterfall amounts, element concentrations, and element fluxes by plot and treatment:

• Litterfall Summary 1995-96.xls
• Litterfall Summary 1996-97.xls
• Litterfall Summary 1997-98.xls
• Litterfall Summary 1998-99.xls

More compact tabular summaries of the litterfall and element fluxes over the 4-year period of monitoring are in:

• Litterfall Annual Flux Summary.xls
• Litterfall Annual Fluxes 1995-99 (Tables).xls

Three additional files provide pine foliar chemical data and preliminary estimates of the extent of element retranslocation from foliage prior to litterfall:

• Kenneth Creek (EP886.13) foliar data (1993-99) .xlsx
• Kenneth Creek nutrient retranslocation.xls
• Autumn foliage & needle litter comparison.xls

Photograph depicts a man in work clothes and hard hat standing with hands placed on the first of many tram buckets hanging in a line. Steel beam framework of station building rises above him. Handwritten annotation on recto of photograph: "[F1?] LOADING STATION EL. 5800". Photograph was glued to cardboard backing with the annotation: "1962".

Document is a research installation layout map for the Holy Cross Creek site of the Sulphur stable isotope tracer study (E.P. 886.15).

Document is a research installation layout map for the Kenneth Creek site of the Sulphur stable isotope tracer study (E.P. 886.15).

Ministry of Forests E.P. 886.13 was established by silviculture researcher Robert Brockley between 1992 and 1999, and consisted of 8 installations across the interior which shared the same experimental design. Five involved lodgepole pine and three involved interior spruce. Complete descriptions of the site characteristics, experimental treatments, and early results are given by:
Brockley, R.P. and D.G. Simpson. 2004. Effects of intensive fertilization on the foliar nutrition and growth of young lodgepole pine and spruce forests in the interior of British Columbia (E.P. 886.13): Establishment and progress report. Technical Report 018. B.C. Ministry of Forests., Research Branch, Victoria, B.C. http://www.for.gov.bc.ca/hfd/pubs/Docs/Tr/Tr018.htm

The key difference between E.P. 886.13 and other lodgepole pine fertilization studies in the BC interior was the inclusion of two treatments involving annual fertilizer applications; see Brockley and Simpson (2004) for full details.

Early tree responses to the fertilization treatments at two lodgepole pine installations, including Kenneth Creek, were presented in:
Amponsah, I.G., P. G. Comeau, R.P. Brockley, and V.J. 2005. Effects of repeated fertilization on needle longevity, foliar nutrition, effective leaf area index, and growth characteristics of lodgepole pine in interior British Columbia, Canada. Canadian Journal of Forest Research 35: 440 – 451. https://doi.org/10.1139/x04-200

Prior to his retirement, Brockley published a comprehensive report on the results of the lodgepole pine installations in this study:
Brockley, R.P. 2010. Effects of intensive fertilization on the foliar nutrition and growth of young lodgepole pine forests in the British Columbia Interior: 12-year results. Technical Report 058. B.C. Ministry of Forests and Range., Forest Science Program, Victoria, B.C. http://www.for.gov.bc.ca/hfd/pubs/Docs/Tr/Tr058

The Kenneth Creek installation, approximately 60 km ESE of Prince George, was established in 1993 in a 10-year-old lodgepole pine plantation. [Note that this site is also referred to as the "Bowron" site in some documents and filenames.] The site was located on a flat glacial outwash terrace with fairly uniform deep sandy soils, and was extensive enough that it later hosted one of two installations of E.P. 886.15 established in 2001. (See https://search.nbca.unbc.ca/index.php/2023-2-2-1-3.) The Kenneth Creek site was attacked by mountain pine beetle in 2006, resulting in at least 80% tree mortality. In 2013, the stand was levelled in order to enable replanting.

Dr. Paul Sanborn's involvement in this study addressed three aspects of soil and nutrient cycling responses to the fertilization treatments:

1. mineral soil and forest floor nutrient stocks, (Sub-subseries 2023.2.2.15.1)
2. litterfall amounts and chemical composition, and, (Sub-subseries 2023.2.2.15.2)
3. litter decomposition. (Sub-subseries 2023.2.2.15.3)

Annotation on slide: "Log skidding on main haul road, Fleet Creek Trial SS054, Jan. 1995"

No annotation on slide.

Annotation on slide: "Summit Lk".

Annotation on slide: "[mostly illegible] Km 3 [?] pinker [?] cubic block"

Image depicts numerous piles of logs, and two unidentified individuals operating an excavator with a "thumb" attachment during the demolition of the Upper Fraser town site. Map coordinates 54°06'51.6"N 121°56'26.3"W

Annotation on slide: "Summit Lake, March 1992".

A spinoff study was conducted in the late 1990s by the Ministry of Forests research soil scientists responsible for the three LTSPS installations in the Sub-Boreal Spruce zone: Paul Sanborn (Log Lake, Prince George Forest Region), Marty Kranabetter (Topley, Prince Rupert Forest Region), and Bill Chapman (Skulow Lake, Cariboo Forest Region). The objective was to estimate the potential nutrient losses resulting from differing levels of woody biomass removal in the LTSPS treatments.

Final results were published in:
Sanborn, P., M. Kranabetter, and B. Chapman. 2000. Nutrient removals in woody biomass: preliminary estimates from the Sub-Boreal Spruce Long-Term Soil Productivity Study. LTSPS Research Note #LTSPS-04. Prince George, Prince Rupert, and Cariboo Forest Regions, B.C. Ministry of Forests. 6 p. https://www.for.gov.bc.ca/hfd/pubs/Docs/Ltsps/Rrn004.htm