One of the key forest management issues addressed by many established long-term silvicultural systems trials is the feasibility, efficacy, and sustainability of timber management under partial cut and clearcut systems. The challenge to regenerating conifers in complex or multi-cohort stands is the above and below ground competition from both the overstory trees and the understory vegetation (Harrington 2006). The goal of this project is to compare planted and natural regeneration performance to date across a range of stand structure types previously created by harvesting in the wet ICH subzones, in a series of established, long-term silviculture systems studies that include clearcut and partial cut systems with different size openings. The proposed project meets this goal by: collection of field data, data handling, analysis, synthesis, reporting in peer-reviewed scientific journals, and extension of results to operational practitioners. This proposed research project will undertake the first major remeasurement and assessment of regeneration response in the Northern Wetbelt Silvicultural System study sites since establishment of the trial and collection of initial baseline data in 2001-2002, and a new remeasurement of regeneration elements of the Fleet Creek Trial. These data are core measurements in the original working plans for all the study sites and are key to our understanding of conifer regeneration response to different stand structural types to meet forest management goals for current regeneration, habitat requirements and planned future entries into the stand. All the study sites described below are under the Northern Wetbelt Silvicultural Systems Project. Collected data will be entered into our central database through data-entry templates and an updated database generated for use by all team members. The database is managed by Industrial Forestry Service Ltd. (IFS) and housed at UNBC (Mike Jull). Our data management system insures data quality, integrity, and availability of all datasets to researchers on the Northern Wetbelt Silvicultural Systems team. There are three discrete, but linked, components to this project: 1) Fleet Creek Group Selection Trial, 2) Northern Wetbelt Silvicultural Systems Trial ICH sites, and 3) Minnow Creek ICHwk3 Four Species Trial. A working plan is available for the Fleet Creek Trial (Stevenson et al, 1996). A working plan and establishment report are available for the Northern Wetbelt Silvicultural System Project (Jull et al 1998, and Jull et al, 2002, respectively; see web site at: http://wetbelt.unbc.ca/). Improved knowledge of the early forest dynamics in response to various stand structural types from this project will provide direction to forest practitioners managing ICH forests for multiple resources. 1) Fleet Creek Group Selection Trial: A pilot project initiated in 1994 in an approximately 300-year-old, multi-storied stand of western redcedar, western hemlock, hybrid spruce, subalpine fir, and scattered Douglas-fir in the Goat River Wet Cool Interior Cedar-Hemlock subzone (ICHwk3). The stand is adjacent to a Caribou High zone, in an area designated as Caribou Corridor. Fleet is the oldest silvicultural systems trial in the wetbelt. The stand was harvested on snow in the winter of 1994 to create 0.24-ha openings in a group selection system. More site and harvesting detail is available at https://www.for.gov.bc.ca/rni/Research/Extension_notes/PG20_fleetcreek.pdf. The purpose of the trial is to address caribou habitat and conifer regeneration on the same ground. Openings were planted in 1995 to spruce, Douglas-fir, and western redcedar with no site preparation. Natural/advanced regeneration was assessed pre-harvest and has been monitored post-harvest with and without site preparation. Results have assisted researchers in the northern and southern interior to plan other studies and select treatments. This study is comparable to the study site in the central interior northeast ...
Eastham, Andrea M., Jull, Michael J.. 2008. Planted regeneration survival and growth, and natural regeneration composition and abundance, within three post-harvest stand structures in silvicultural system trials in the wet Interior Cedar Hemlock subzones of east-central British Columbia. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2008MR406
Topic: FLNRORD Research Program
Keywords: Forest, Investment, Account, (FIA), British, Columbia
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