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Paleosols at the Goldbottom site, Klondike goldfields

As part of a multidisciplinary team led by Grant Zazula (then a Ph.D. student at Simon Fraser University; later a palaeontologist with the Government of Yukon) and Duane Froese (Professor, University of Alberta), Dr. Paul Sanborn examined a set of buried paleosols (fossil soils) preserved in frozen sediments exposed by placer mining in the spring of 2004.

The findings were published in:
Zazula, G.D., D.G. Froese, S.A. Elias, S. Kuzmina, C. La Farge, A.V. Reyes, P.T. Sanborn, C.E. Schweger, C.A.S. Smith, and R.W. Mathewes. 2006. Vegetation buried under Dawson tephra (25,300 14C yr BP) and locally diverse late Pleistocene paleoenvironments of Goldbottom Creek, Yukon, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 242: 253–286. https://doi.org/10.1016/j.palaeo.2006.06.005

"Soil Profile Description: Kiskatinaw LTSP Site"

This "Soil Profile Description: Kiskatinaw LTSP Site" document provides a description of Kiskatinaw pedon.

The key results from the regional soil mineralogy study were later published as:
J.M. Arocena and P. Sanborn. 1999. Mineralogy and genesis of selected soils and their implications for forest management in central and northeastern British Columbia. Canadian Journal of Soil Science 79: 571-592. https://doi.org/10.4141/S98-07

Ministry of Forests internal memorandum "Re: Evaluation of BaCl₂ method for soil cations"

This Ministry of Forests internal memorandum of 30 June 1997 from Paul Sanborn to Regional & Research Branch soil scientists provides comparison of Morgan's extractant and BaCl₂ for cations, using the 57 samples from the regional soil mineralogy study.

The key results from the study were later published as:
J.M. Arocena and P. Sanborn. 1999. Mineralogy and genesis of selected soils and their implications for forest management in central and northeastern British Columbia. Canadian Journal of Soil Science 79: 571-592. https://doi.org/10.4141/S98-07

"Mineralogy of clay and sand fractions of soils developed from till, glaciofluvial and glaciolacustrine deposits in central interior British Columbia"

"Mineralogy of clay and sand fractions of soils developed from till, glaciofluvial and glaciolacustrine deposits in central interior British Columbia" was a preliminary internal report that provides some background to Arocena and Sanborn's regional soil mineralogy study, as well as a compilation of the mineralogical data.

The key results from this work were later published as:
J.M. Arocena and P. Sanborn. 1999. Mineralogy and genesis of selected soils and their implications for forest management in central and northeastern British Columbia. Canadian Journal of Soil Science 79: 571-592. https://doi.org/10.4141/S98-07

Regional soil mineralogy study

In the mid-1990s, Dr. Paul Sanborn worked with Dr. Lito Arocena of UNBC to assemble and interpret basic physical, chemical, and mineralogical data for typical soils at important long-term forestry research sites in central and northeastern BC. The key results were published as:

J.M. Arocena and P. Sanborn. 1999. Mineralogy and genesis of selected soils and their implications for forest management in central and northeastern British Columbia. Canadian Journal of Soil Science 79: 571-592. https://doi.org/10.4141/S98-07

Nine pedons were involved, with 7 located at the sites of 4 Ministry of Forests Experimental Projects (E.P.), and 2 at the Aleza Lake Research Forest.

Data for Sulphur stable isotope tracer study (E.P. 886.15)

Data sets for the Sulphur stable isotope tracer study (E.P. 886.15) include:

  • 03-095 UNBC PS-For.xls Particle size analyses (Kenneth Creek 0-20 & 20-40 cm)
  • 03-096 UNBC PS-For.xls Particle size analyses (Holy Cross 0-20 & 20-40 cm)
  • 082037.xls XRF elemental analysis (Holy Cross pedon)
  • 082038.xls XRF elemental analysis (Kenneth Creek pedon)
  • 084996.xlsx XRF elemental analysis (HC & KC parent materials)
  • EP 886 15 S isotope data (2001-2005) - foliage_completed (Feb 18).xls Pine foliage d34S (total S & total SO4-S)
  • EP 886.15 2003 Foliage & Soil Chemistry Summary.xls
  • EP 886.15 Foliar Analyses (selected) 2001-2006.xls Total N & S, SO4-S
  • EP 886.15 Holy Cross & Kenneth Creek 2005 foliage.xls
  • EP 886.15 Holy Cross & Kenneth Creek 2006 foliage.xls
  • EP 886.15 Holy Cross 2001 FH (S516FINL).xls
  • EP 886.15 Holy Cross 2001 Foliage (T727FINL).xls
  • EP 886.15 Holy Cross 2001 Litter (S515FINL).xls
  • EP 886.15 Holy Cross 2001 Mineral Soil (0-20 cm) (S507FINL).xls
  • EP 886.15 Holy Cross 2002 Foliage (T785FINL).xls
  • EP 886.15 Holy Cross 2003 FH (S642FINL).xls
  • EP 886.15 Holy Cross 2003 Foliage (T836FINL).xls
  • EP 886.15 Holy Cross 2003 Litter (S641FINL).xls
  • EP 886.15 Holy Cross 2003 Mineral Soil (0-20 cm) (S643FINL).xls
  • EP 886.15 Holy Cross 2004 FH (S702FINL).xls
  • EP 886.15 Holy Cross 2004 Foliage (T904FINL).xls
  • EP 886.15 Holy Cross 2004 Litter (S701FINL).xls
  • EP 886.15 Holy Cross 2004 Mineral Soil (0-20 cm) (S703FINL).xls
  • EP 886.15 Kenneth Creek 2001 FH (S521FINL).xls
  • EP 886.15 Kenneth Creek 2001 Foliage (T727FINL).xls
  • EP 886.15 Kenneth Creek 2001 Litter (S520FINL).xls
  • EP 886.15 Kenneth Creek 2001 Mineral Soil (0-20 cm) (S508FINL).xls
  • EP 886.15 Kenneth Creek 2001 Mineral Soil (20-40 cm) (S509FINL).xls
  • EP 886.15 Kenneth Creek 2002 Foliage (T785FINL).xls
  • EP 886.15 Kenneth Creek 2003 FH (S645FINL).xls
  • EP 886.15 Kenneth Creek 2003 Foliage (T837FINL).xls
  • EP 886.15 Kenneth Creek 2003 Litter (S644FINL).xls
  • EP 886.15 Kenneth Creek 2003 Mineral Soil (0-20 cm) (S646FINL).xls
  • EP 886.15 Kenneth Creek 2003 Mineral Soil (20-40 cm) (S647FINL).xls
  • EP 886.15 Kenneth Creek 2004 FH (S705FINL).xls
  • EP 886.15 Kenneth Creek 2004 Foliage (T905FINL).xls
  • EP 886.15 Kenneth Creek 2004 Litter (S704FINL).xls
  • EP 886.15 Kenneth Creek 2004 Mineral Soil (0-20 cm) (S706FINL).xls
  • EP 886.15 Kenneth Creek 2004 Mineral Soil (20-40 cm) (S707FINL).xls
  • EP 886.15 Sample Inventory.xls Listing of MoF Lab Job No.'s
  • Fertilizer March 2003.xls d34S data for commercial fertilizer S sources
  • hc_2002.xls Initial (2002) pine tree measurement data - Holy Cross
  • kc_2002.xls Initial (2002) pine tree measurement data - Kenneth Creek

"Sulphur Fertilization of Lodgepole Pine: A Stable Isotope Tracer Study (Ministry of Forests E.P. 886.15) - Project Y051210 - Technical Report to the Forest Science Program"

Unpublished results for the Sulphur stable isotope tracer study (E.P. 886.15) were presented in annual reports to the funding agencies, including this "Sulphur Fertilization of Lodgepole Pine: A Stable Isotope Tracer Study (Ministry of Forests E.P. 886.15) - Project Y051210 - Technical Report" from April 2005.

Sulphur stable isotope tracer study (E.P. 886.15)

The Sulphur stable isotope tracer study (E.P. 886.15) field experiment was installed in young lodgepole pine stands at two sites in the Prince George Forest Region in 2001, with fertilizer treatments applied in late 2002. These sites are designated as Kenneth Creek (east of Prince George) and Holy Cross (south of Fraser Lake). (The Kenneth Creek installation was established near plots of the older E.P. 886.13 in the same stand.) Full experimental details, including pretreatment soil and foliar date, were given in:

Sanborn, P., R.P. Brockley, B. Mayer, M. Yun, J. Prietzel. 2005. Sulphur fertilization of lodgepole pine: a stable isotope tracer study (E.P. 886.15): Establishment report. Tech. Rep. 020. B.C. Min. For., Res. Br., Victoria, BC. http://www.for.gov.bc.ca/hfd/pubs/Docs/Tr/Tr020.htm

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, and due to poor communications within the Ministry of Forests, the opportunity to salvage this installation was lost. The Holy Cross site was hit by a wildfire in 2010, and most of the research plots were destroyed.

Preliminary results from foliar analysis, sufficient to demonstrate that our stable isotope tracer approach could detect fertilizer uptake, were published in:

Sanborn, P.T., R.P. Brockley, and B. Mayer. 2011. Stable isotope tracing of fertilizer uptake by lodgepole pine: foliar responses. Can. J. For. Res. 41: 493-500. https://cdnsciencepub.com/doi/full/10.1139/X10-222

Data for Cluculz retrospective study (E.P. 886.10)

Data sets associated with the Cluculz retrospective study (E.P. 886.10):

  • 082036.xls -- Elemental analysis (XRF) for mineral horizon samples from profile at Cluculz EP 886.10 site
  • CLUCINC.xls -- Summary chemical properties for composite samples in aerobic incubation
  • Cluculz Ck 2002 Foliar Analysis.xls -- Analyzed for individual single-tree plots
  • Cluculz Ck 2002 Forest Floor.xls -- Forest floor mass data
  • Cluculz composite list (2003 samples).xls -- Composite groups (3 original samples in each) used for organic & mineral soils
  • Cluculz composite list (incubation experiment).xls -- Composite groups (3 original samples in each) used for organic & mineral soils
  • Cluculz composite list for incubations (2003 samples).xls -- Composite groups (3 original samples in each) used for organic & mineral soils
  • Cluculz Creek S mineralization - initial fractions (2).xls -- S fractions - organic & mineral soil composites
  • Cluculz Creek S mineralization - initial S fractions.xls -- S fractions - organic & mineral soil composites
  • Cluculz Creek S mineralization (IC).xls -- S mineralization data for aerobic incubation - organic & mineral soils
  • Cluculz foliar and soil data.xls -- Chemical properties of foliage, composite forest floors, composite mineral soils
  • Cluculz pH.xls -- pH - organic & mineral soil composites
  • Cluculz S fraction graphs.xls -- S fractions - organic & mineral soil composites
  • Elemental Analysis of Standard by XRF (2005).xls -- Published & XRF analysis of CANMET TILL-1 soil standard (used in Cluculz XRF analysis)

Cluculz retrospective study (E.P. 886.10)

During Dr. Sanborn's years with the Ministry of Forests research program (1991-2002), he worked on forest fertilization research with silviculturist Rob Brockley (retired; formerly at Kalamalka Research Station, Vernon, BC). Brockley’s work in the 1980s and early 1990s had documented the widespread pattern of sulphur deficiencies across the BC interior, and the superior response of managed stands to fertilization treatments involving sulphur (S) and nitrogen (N) rather than nitrogen alone.

To progress farther, different methods for understanding the fate of sulphur fertilizers in forests and soils were needed. Sanborn contacted the stable isotope group at the University of Calgary which had done important work on the fate of pollutant sulphur emitted by oil and gas extraction and processing in Alberta, using natural abundances of sulphur stable isotopes as a tracer. This was the beginning of a collaboration with Dr. Bernhard Mayer of the University of Calgary, and also with his German soil scientist colleague, Dr. Joerg Prietzel (Munich Technical University).

The research team engaged in the Cluculz retrospective study (E.P. 886.10) for the BC Ministry of Forests.

An ancillary project involved resampling (2002 - foliage, 2003 - soil) of a previously fertilized (1990) installation (E.P. 886.10) south of Cluculz Lake in order to compare the longer-term effects of different fertilizer sulphur forms on soil and foliage chemical properties. Results were published as a journal article and a Ministry of Forests Extension Note:

Sanborn, P.T., J. Prietzel, R.P. Brockley. 2005. Soil and lodgepole pine foliar responses to two fertilizer sulphur forms in the Sub-Boreal Spruce zone, central interior British Columbia. Can. J. For. Res. 35 (10): 2316-2322. https://cdnsciencepub.com/doi/abs/10.1139/x05-138

Sanborn, P. and R. Brockley. 2005. Sulphur deficiencies in lodgepole pine: occurrence, diagnosis, and treatment. Ext. Note 71. B.C. Min. For., Res. Br., Victoria, B.C. https://www.for.gov.bc.ca/hfd/pubs/docs/en/En71.pdf

Data for "Effects of Prescribed Fire on Sulphur in Forest Soils" project

During a year away from studies in 1987-88, Dr. Paul Sanborn developed a successful grant proposal to the Science Council of BC (SCBC) to pursue a postdoctoral project with Dr. Tim Ballard in relation to sulphur-deficient soils in BC and prescribed fire. This project built on an existing broadcast burning study conducted by Macmillan Bloedel Ltd. near Port Alberni on Vancouver Island, led by Bill Beese (later at Vancouver Island University). Dr. Sanborn's work addressed sulphur forms and amounts in the soils at these sites, and the chemical processes influencing sulphur availability in relation to prescribed fire.

Only one part of this work was eventually published:
Sanborn, P.T. and T.M. Ballard. 1991. Combustion losses of sulphur from conifer foliage: Implications of chemical form and soil nitrogen status. Biogeochemistry 12: 129–134. https://doi.org/10.1007/BF00001810

The remainder of the work was documented in this Project Completion Report to SCBC, dated February 28, 1990, and entitled "Effects of Prescribed Fire on Sulphur in Forest Soils".

Thirty-four data files were selected for archival retention. There is some redundancy of content among these, with some formatted for incorporation as tables in the report appendices, and others containing some of the same data, but set up as input files for a statistics program. These account for almost all of the data listed in the Project Completion Report appendices. No glossary of variable names is provided, but these should be identifiable by referring to the Report.

"Project Completion Report to the Science Council of British Columbia: Effects of Prescribed Fire on Sulphur in Forest Soils"

During a year away from studies in 1987-88, Dr. Paul Sanborn developed a successful grant proposal to the Science Council of BC (SCBC) to pursue a postdoctoral project with Dr. Tim Ballard in relation to sulphur-deficient soils in BC and prescribed fire. This project built on an existing broadcast burning study conducted by Macmillan Bloedel Ltd. near Port Alberni on Vancouver Island, led by Bill Beese (later at Vancouver Island University). Dr. Sanborn's work addressed sulphur forms and amounts in the soils at these sites, and the chemical processes influencing sulphur availability in relation to prescribed fire.

Only one part of this work was eventually published:
Sanborn, P.T. and T.M. Ballard. 1991. Combustion losses of sulphur from conifer foliage: Implications of chemical form and soil nitrogen status. Biogeochemistry 12: 129–134. https://doi.org/10.1007/BF00001810

The remainder of the work was documented in this Project Completion Report to SCBC, dated February 28, 1990, and entitled "Effects of Prescribed Fire on Sulphur in Forest Soils".

UBC Postdoctoral Project "Effects of Prescribed Fire on Sulphur in Forest Soils"

During a year away from studies in 1987-88, Dr. Paul Sanborn developed a successful grant proposal to the Science Council of BC (SCBC) to pursue a postdoctoral project with Dr. Tim Ballard in relation to sulphur-deficient soils in BC and prescribed fire. This project built on an existing broadcast burning study conducted by Macmillan Bloedel Ltd. near Port Alberni on Vancouver Island, led by Bill Beese (later at Vancouver Island University). Dr. Sanborn's work addressed sulphur forms and amounts in the soils at these sites, and the chemical processes influencing sulphur availability in relation to prescribed fire.

Only one part of this work was eventually published:
Sanborn, P.T. and T.M. Ballard. 1991. Combustion losses of sulphur from conifer foliage: Implications of chemical form and soil nitrogen status. Biogeochemistry 12: 129–134. https://doi.org/10.1007/BF00001810

The remainder of the work was documented in the Project Completion Report to SCBC, dated February 28, 1990.

Thirty-four of the accompanying project data files were selected for archival retention.

Forest soil sulphur research

Forest soil sulphur research was a continuing interest for Dr. Paul Sanborn for more than 30 years, beginning at UBC in the mid-1980s when he took a graduate course in Forest Soils from Dr. Tim Ballard. Among the things that he learned was that soils in much of BC were deficient in sulphur (S). Simultaneously, he became aware of the large amount of research on prescribed fire in BC forests, with broadcast burning being the main method of site preparation across much of the province at that time.

Sanborn undertook various projects in this area of research:

  1. UBC Postdoctoral Project on effects of prescribed fire on sulphur in forest soils (1988-90)
  2. Cluculz retrospective study (E.P. 886.10) with the BC Ministry of Forests and UNBC
  3. Sulphur stable isotope tracer study (E.P. 886.15) with the BC Ministry of Forests and UNBC

Posthumous Records

Series consists of records created and collected after Dr. Joselito Arocena's death on December 20, 2015. Includes information about Arocena's work in China, photographs and video of the unveiling of the Lito Lab, and video recordings and presentation materials from a memorial lecture for Dr. Joselito Arocena by Mike Rutherford, Hugues Massicotte, and Paul Sanborn.

Joselito Arocena PhD fieldwork

File consists of slides depicting Joselito Arocena's University of Alberta PhD fieldwork. Arocena started his PhD fieldwork in 1988 under the supervision of Dr. Steve Pawluk.

Joselito Arocena PhD fieldwork in Alberta foothills

File consists of slides depicting Joselito Arocena's University of Alberta PhD fieldwork at a research site in the Alberta foothills near Hinton. Arocena had just started his PhD fieldwork in 1988 under the supervision of Dr. Steve Pawluk. Persons depicted in the photographs include: Joselito Arocena, Dr. Steve Pawluk (blue hat), and Paul Sanborn.

Joselito Arocena PhD fieldwork in Alberta foothills

File consists of slides depicting Joselito Arocena's University of Alberta PhD fieldwork at a research site in the Alberta foothills near Hinton. Arocena had just started his PhD fieldwork in 1988 under the supervision of Dr. Steve Pawluk. Persons depicted in the photographs include: Joselito Arocena (red hat), Dr. Steve Pawluk (blue hat), and Dr. Marvin Dudas. The photographer was Paul Sanborn, who was near completion of a 1-year post-doc with Dr. Pawluk.

Digital photographs from external hard drives

File consists of digital photographs from Dr. Joselito Arocena's external hard drives. Images depict a variety of subjects, including research imagery, photographs from Arocena's travels, UNBC, the construction of the UNBC Northern Medical Program building, Prince George, and the Northern BC region.

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