Microclimate Studies in Silvicultural Systems on the Chilcotin Plateau of British Columbia

Microclimate Studies in Silvicultural Systems on the Chilcotin Plateau of British Columbia

Author: Robert Matthew Sagar

Publisher:

Published: 2005

Total Pages: 40

ISBN-13:

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Group selection and irregular group shelterwood silvicultural systems are being tested as options to conserve woodland caribou (Rangifer tarandus caribou) habitat. If successful, the systems will be applied within the very dry, cold Sub-Boreal Pine-Spruce (SBPSxc) and very dry, very cold Montane Spruce (MSxv) biogeoclimatic subzones, located on the high-elevation Chilcotin Plateau of west-central British Columbia. In these harsh growing environments, partial cutting strongly influences the microclimate in terms of air and soil temperature, frost events, and snow-free dates. To examine the magnitude of this influence, three pairs of climate stations were set up in partial cuts and clearcuts, across a range of elevations, to compare microclimate conditions. The study also compared north edge, centre, and south edge microsites within one 30-m opening on each of three partial cuts.


Microclimate Studies in Mountain Pine Beetle-damaged Silvicultural Systems on the Chilcotin Plateau

Microclimate Studies in Mountain Pine Beetle-damaged Silvicultural Systems on the Chilcotin Plateau

Author: Robert Matthew Sagar

Publisher:

Published: 2015

Total Pages: 60

ISBN-13:

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The objectives of this study were to: 1. compare the key environmental variables between blocks (elevational effect) and treatments (clearcut and irregular group shelterwood with whole-tree harvesting partial cut), and between microsites within partial cut openings (north and south edges and centre); and 2. examine temporal changes occurring to environmental variables in the context of the changing biological environment. This document includes an introduction, methods, results and discussion, and a summary.--Includes text from document.


Microclimate Studies in Uniform Shelterwood Systems in the Sub-Boreal Spruce Zone of Central British Columbia

Microclimate Studies in Uniform Shelterwood Systems in the Sub-Boreal Spruce Zone of Central British Columbia

Author: Robert Matthew Sagar

Publisher:

Published: 2010

Total Pages: 40

ISBN-13:

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This study was initiated in 2001 as part of a uniform shelterwood trial located in the dry, warm Sub-Boreal Spruce subzone (sbsdw) near Williams Lake, B.C., after a second harvesting entry was completed. The focus of the main trial was to test various levels of residual basal retention and harvesting methods on the establishment, survival, and productivity of Douglas-fir regeneration. The microclimate component was set up to help interpret tree performance by comparing the climate conditions among three of the residual basal area treatments (0, 15, and 20 m2/ha). The objectives for the microclimate portion of the shelterwood project were to compare soil temperatures and snow-free periods among the three residual basal area treatments (0, 15, and 20 m2/ha); to compare the incidence, duration, and severity of growing season frosts among the three residual basal area treatments (0, 15, and 20 m2/ha); and to investigate the effects of local canopy density on minimum near-ground air temperatures and duration of frost events during the growing season.--Document.


Natural Regeneration in Partial Cuts and Mature Forests After Mountain Pine Beetle Infestation in the West Chilcotin

Natural Regeneration in Partial Cuts and Mature Forests After Mountain Pine Beetle Infestation in the West Chilcotin

Author: Nola Marie Daintith

Publisher:

Published: 2015

Total Pages: 32

ISBN-13:

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The Itcha-Ilgachuz Research Project was initiated in the west Chilcotin region of central British Columbia to test variants of group selection and irregular group shelterwood silvicultural systems for managing lodgepole pine (Pinus contorta var. latifolia) forests for timber and northern caribou (Rangifer tarandus caribou Gmelin, northern ecotype) winter habitat. The results presented in this report are from three assessments that have been completed since the start of the mountain pine beetle outbreak, and are provided in context with the results from the earlier natural regeneration study. The results provide insight into how successfully the study sites and surrounding forests, which have sustained variable levels of mortality, regenerate naturally.--Includes text from document.


Forest Hydrology

Forest Hydrology

Author: Devendra Amatya

Publisher: CABI

Published: 2016-09-14

Total Pages: 309

ISBN-13: 1780646607

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Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.


Physiological Ecology of North American Plant Communities

Physiological Ecology of North American Plant Communities

Author: Brain F. Chabot

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 704

ISBN-13: 9400948301

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Although, as W.D. Billings notes in his chapter in this book. the development of physiological ecology can be traced back to the very beginnings of the study of ecology it is clear that the modern development of this field in North America is due in the large part to the efforts of Billings alone. The foundation that Billings laid in the late 1950s came from his own studies on deserts and subsequently arctic and alpine plants, and also from his enormous success in instilling enthusiasm for the field in the numerous students attracted to the plant ecology program at Duke University. Billings' own studies provided the model for subsequent work in this field. Physiological techniques. normally confined to the laboratory. were brought into the field to examine processes under natural environmental conditions. These field studies were accompanied by experiments under controlled conditions where the relative impact of various factors could be assessed and further where genetic as opposed to environmental influences could be separated. This blending of field and laboratory approaches promoted the design of experiments which were of direct relevance to understanding the distribution and abundance of plants in nature. Physiological mechanisms were studied and assessed in the context of the functioning of plants under natural conditions rather than as an end in itself.


The Mountain Pine Beetle

The Mountain Pine Beetle

Author: Pacific Forestry Centre

Publisher:

Published: 2006

Total Pages: 304

ISBN-13: 9780662426233

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"This book presents a synthesis of published information on mountain pine beetle (Dendroctonus ponderosae Hopkins [Coleoptera: Scolytidae]) biology and management with an emphasis on lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) forests of western Canada. Intended as a reference for researchers as well as forest managers, the book covers three main subject areas: mountain pine beetle biology, management, and socioeconomic concerns. The chapters on biology cover taxonomy, life history and habits, distribution, insect-host tree interactions, development and survival, epidemiology, and outbreak history. The management section covers management strategy, survey and detection, proactive and preventive management, and decision support tools. The chapters on socioeconomic aspects include an economic examination of management programs and the utilization of post-beetle salvage timber in solid wood, panelboard, pulp and paper products."--Publisher's description.


The Lichens of British Columbia

The Lichens of British Columbia

Author: Trevor Goward

Publisher: Ministry of Forests Research Program

Published: 1994

Total Pages: 194

ISBN-13:

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This manual provides illustrated keys to all leaf and scale lichens known to occur in British Columbia. In total, 327 species are included, while 19 taxa are excluded from earlier accounts of the flora. Accompanying the keys are approximately 350 line drawings. The manual briefly summarizes the ecology, distribution, and frequency status of the province's foliose and squamulose lichens. Each genus account provides a common name, a short description, pertinent references, notes on the derivation of the common name, and notes on global status and distribution, taxonomy, chemistry, and/or similar genera. Each species account provides species and author citation, distribution maps, common names, habit, and lichen distribution in B.C.