Author: Jacob H. DyerPublisher:
ISBN:
Category :
Languages : en
Pages : 200
Book Description
Short-term Forest Growth and Productivity in and Around Experimental Canopy Gaps in a Northern Hardwood Forest, Wisconsin
Author: Jacob H. DyerEcology and Recovery of Eastern Old-Growth Forests
Author: Andrew M. BartonPublisher: Island Press
ISBN: 1610918908
Category : Nature
Languages : en
Pages : 362
Book Description
The landscapes of North America, including eastern forests, have been shaped by humans for millennia, through fire, agriculture, hunting, and other means. But the arrival of Europeans on America’s eastern shores several centuries ago ushered in the rapid conversion of forests and woodlands to other land uses. By the twentieth century, it appeared that old-growth forests in the eastern United States were gone, replaced by cities, farms, transportation networks, and second-growth forests. Since that time, however, numerous remnants of eastern old growth have been discovered, meticulously mapped, and studied. Many of these ancient stands retain surprisingly robust complexity and vigor, and forest ecologists are eager to develop strategies for their restoration and for nurturing additional stands of old growth that will foster biological diversity, reduce impacts of climate change, and serve as benchmarks for how natural systems operate. Forest ecologists William Keeton and Andrew Barton bring together a volume that breaks new ground in our understanding of ecological systems and their importance for forest resilience in an age of rapid environmental change. This edited volume covers a broad geographic canvas, from eastern Canada and the Upper Great Lakes states to the deep South. It looks at a wide diversity of ecosystems, including spruce-fir, northern deciduous, southern Appalachian deciduous, southern swamp hardwoods, and longleaf pine. Chapters authored by leading old-growth experts examine topics of contemporary forest ecology including forest structure and dynamics, below-ground soil processes, biological diversity, differences between historical and modern forests, carbon and climate change mitigation, management of old growth, and more. This thoughtful treatise broadly communicates important new discoveries to scientists, land managers, and students and breathes fresh life into the hope for sensible, effective management of old-growth stands in eastern forests.
The Ecology and Silviculture of Oaks, 3rd Edition
Author: Paul S JohnsonPublisher: CABI
ISBN: 1780647085
Category : Technology & Engineering
Languages : en
Pages : 645
Book Description
The third edition of The Ecology and Silviculture of Oaks is an updated and expanded edition that explores oak forests as responsive ecosystems. New chapters emphasize the importance of fire in sustaining and managing oak forests, the effects of a changing climate, and advanced artificial regeneration techniques. This new edition expands on silvicultural methods for restoring and sustaining oak woodlands and savannahs, and on management of ecosystem services, including wildlife habitat. It also incorporates new material on evaluating landscape-scale, and cumulative effects of management action compared with inaction. Nine of the fifteen chapters cover updated information on the geographic distribution of US oaks, oak regeneration dynamics, site productivity, stocking and stand development, even- and uneven-aged silvicultural methods, and growth and yield. This edition includes a new section with colour illustrations for improved visualization of complex relationships. This book is intended for forest and wildlife managers, ecologists, silviculturists, environmentalists, and students of those fields.
Report
Author: Lake States Forest Experiment Station (Saint Paul, Minn.)Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 50
Book Description
Special Reference Briefs
Author: Effects of Agricultural Conservation Practices on Fish and Wildlife
Author: Publisher:
ISBN:
Category : Agricultural conservation
Languages : en
Pages : 404
Book Description
"The bibliography is a guide to recent scientific literature covering effects of agricultural conservation practices on fish and wildlife. The citations listed here provide information on how conservation programs and practices designed to improve fish and wildlife habitat, as well as those intended for other purposes (e.g., water quality improvement), affect various aquatic and terrestrial fauna"--Abstract.
A Generalized Forest Growth Projection System Applied to the Lake States Region
Author: North Central Forest Experiment Station (Saint Paul, Minn.)Publisher:
ISBN:
Category : Forest management
Languages : en
Pages : 108
Book Description
U.S. Forest Service Research Paper NC.
Author: North Central Forest Experiment Station (Saint Paul, Minn.)Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 828
Book Description
Growth and Physiological Responses of Canopy Tree Species to Selection Harvests in a Northern Hardwood Forest
Author: Trevor A. JonesPublisher:
ISBN: 9780494158074
Category :
Languages : en
Pages : 298
Book Description
The basal area increment (BAI) response of trees to gap creation was generally positive; however, there was a lag in BAI response which typically lasted between one and three years. Tree size was the best predictor of both pre-harvest BAI and BAI response to gap creation. Large trees had the greatest BAI but did not respond as positively to gap creation as smaller trees. Unexpectedly, it was observed that the BAI response of the more shade tolerant species was more positive than the less tolerant species. This may be related to species differences in canopy structure, with the deep crowns of shade tolerant species providing increased light interception following gap creation. The management of tolerant hardwood forests in central Ontario is typically done using the selection harvest system where no more than one third of the stand basal area is removed in each harvest while a balanced distribution of tree sizes and species is maintained to ensure continual stand development. Because regeneration is achieved through the manipulation of the understory light environment, the response of tree seedlings and saplings to changing light availability has been well studied. However, little is known about either the physiological acclimation processes or the growth responses of canopy trees to gap creation. This thesis examines the physiological acclimation and growth responses of large trees to selection management and addresses the factors that determine the temporal pattern and magnitude of the growth response. In order to better understand growth responses of large trees to gap creation an experiment examining canopy physiological and morphological acclimation to gap creation was conducted. Leaves within the lower portions of the canopy experienced gradual increases in area-based maximum photosynthetic rates, stomatal conductance, and leaf nitrogen. No change in these variables was observed that could not be accounted for by changes in leaf mass per unit area. Both the growth and physiological studies point to the importance of increases in incident light in the lower portions of the canopy, in conjunction with slow acclimation responses, as drivers of whole tree carbon gain and growth following selection harvests.
Author: