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Book The Effects of Soil Temperature and Site Preparation on Subalpine and Boreal Tree Species

Download or read book The Effects of Soil Temperature and Site Preparation on Subalpine and Boreal Tree Species written by Leanne M. McKinnon and published by Canadian Museum of Civilization/Musee Canadien Des Civilisations. This book was released on 2002 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Abr g Des Publications

Download or read book Abr g Des Publications written by and published by . This book was released on 2000 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers all publications issued by the regions, institutes and headquarters of Forestry Canada.

Book The Effects of Forest Management on Carbon Storage in Ontario s Forests

Download or read book The Effects of Forest Management on Carbon Storage in Ontario s Forests written by Stephen J. Colombo and published by Sault Ste. Marie : Ontario Ministry of Natural Resources, Applied Research and Development. This book was released on 2005 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report examines how forest management can affect the carbon (C) balance of Ontario's forests. Ten forest management activities organized in four themes were examined: stand establishment (site preparation, planting, and vegetation management), growth enhancement (thinning, fertilization, and genetic improvement), forest protection (from forest fires, and insect and disease infestations), and harvesting (controlling the area occupied by roads, skid trails and landings, and reducing the area disturbed by harvesting)."--Document.

Book Bibliographic Index

Download or read book Bibliographic Index written by and published by . This book was released on 2007 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Soil Temperature Effects on Seedling Water Balance in Subalpine Conifers

Download or read book Soil Temperature Effects on Seedling Water Balance in Subalpine Conifers written by Geoffrey Marvin McNaughton and published by . This book was released on 1991 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Environmental and Adaptive Buffers that Mediate the Response of Subalpine Ecosystems to Environmental Change

Download or read book Environmental and Adaptive Buffers that Mediate the Response of Subalpine Ecosystems to Environmental Change written by Lafe G. Conner and published by . This book was released on 2015 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document reports the results of 4 studies of subalpine ecosystem ecology, describing ways that spatial heterogeneity in soils and plant communities mediate ecosystem responses to environmental change. Ecosystem responses to environmental change are also mediated by regional climate patterns and interannual variability in weather. In the first chapter we report the results of an experiment to test for the mediating effects of associational resistance in a forest community that experienced wide-spread beetle kill. We found that Engelmann spruce were more likely to survive a beetle outbreak when growing in low densities (host dilution) and not through other types of associational resistance that relate to higher tree-species richness or greater phylogenetic diversity of the forest community. In the second chapter we report the greater phylogenetic diversity of the forest community. In the second chapter we report the effects of early snowmelt on soil moisture in subalpine meadow and aspen communities. We found that soil organic matter, soil texture, and forest cover mediated the effects of early snowmelt and were more important drivers of growing-season soil moisture than was snow-free date. In the third chapter we report the effect of early snowmelt on growth and seed production of early-season and midsummer herbaceous species. We found that the primary effect that snowmelt timing had a plant growth was through its effect on species distribution. Changes in the timing of snowmelt resulted in warmer soil temperatures compared to neighboring snow-cover plots, and that microbial biomass and soil respiration showed no signs of a snowmelt legacy effect during the growing season. Soil organic carbon in rapid and slow-turnover pools was affected more by plant community than by snowmelt timing, and the primary drivers of soil respiration during the snow-free period were first soil organic matter and second soil temperature. Taken together, this dissertation reports our findings that subalpine ecosystems are resilient to environmental change in part because organisms in these systems are adapted to environmental conditions that are highly variable between sites, seasons, and years.

Book Restoration of Boreal and Temperate Forests

Download or read book Restoration of Boreal and Temperate Forests written by John A. Stanturf and published by CRC Press. This book was released on 2015-08-14 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: This substantially updated new edition reflects the growing recognition that large areas of forests are degraded globally. This edition describes forest restoration in the context of rapid social, economic, environmental, and climate change. Covering the last decade's significant advances in forest restoration concepts and practice, this edition has 16 new chapters and 19 thoroughly revised chapters. This book is an excellent source of information for researchers, managers, policymakers, and graduate students in forestry and ecology.

Book Canadian Journal of Forest Research

Download or read book Canadian Journal of Forest Research written by and published by . This book was released on 2011 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Origins of Abrupt Change Postfire Subalpine Conifer Regeneration Declines Nonlinearly with Warming and Drying

Download or read book Origins of Abrupt Change Postfire Subalpine Conifer Regeneration Declines Nonlinearly with Warming and Drying written by Winslow D. Hansen and published by . This book was released on 2019 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Robust tree regeneration following high-severity wildfire is key to the resilience of subalpine and boreal forests, and 21st century climate could initiate abrupt change in forests if postfire temperature and soil moisture become less suitable for tree seedling establishment. Using two widespread conifer species, lodgepole pine (Pinus contorta var. latifolia) and Douglas-fir (Pseudotsuga menziesii var. glauca), we conducted complementary experiments to ask (1) How will projected early- to mid-21st-century warming and drying affect postfire tree seedling establishment and mortality? (2) How does early seedling growth differ between species and vary with warming and drying? With a four-year in situ seed-planting experiment and a one growing season controlled-environment experiment, we explored effects of climate on tree seedling establishment, growth, and survival and identified nonlinear responses to temperature and soil moisture. In our field experiment, warmer and drier conditions, consistent with mid21st-century projections, led to a 92% and 76% reduction in establishment of lodgepole pine and Douglas-fir. Within three years, all seedlings that established under warmer conditions died, as might be expected at lower elevations and lower latitudes of species? ranges. Seedling establishment and mortality also varied with aspect; approximately 1.7 times more seedlings established on mesic vs. xeric aspects, and fewer seedlings died. In the controlled-environment experiment, soil temperatures were 2.0°?5.5°C cooler than the field experiment, and warming led to increased tree seedling establishment, as might be expected at upper treeline or higher latitudes. Lodgepole pine grew taller than Douglas-fir and produced more needles with warming. Douglas-fir grew longer roots relative to shoots, compared with lodgepole pine, particularly in dry soils. Differences in early growth between species may mediate climate change effects on competitive interactions, successional trajectories, and species distributions. This study demonstrates that climate following high-severity fire exerts strong control over postfire tree regeneration in subalpine conifer forests. Climate change experiments, such as those reported here, hold great potential for identifying mechanisms that could underpinfundamental ecological change in 21st-century ecosystems.

Book Forest Fertilization

Download or read book Forest Fertilization written by Henry Nixon Chappell and published by . This book was released on 1992 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: