A Review of the Literature on Seed Fate in Whitebark Pine and the Life History Traits of Clark's Nutcracker and Pine Squirrels PDF Download
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Author: Teresa J. Lorenz Publisher: ISBN: Category : Clark's nutcracker Languages : en Pages : 68
Book Description
Whitebark pine is a critical component of subalpine ecosystems in western North America, where it contributes to biodiversity and ecosystem function and in some communities is considered a keystone species. Whitebark pine is undergoing rangewide population declines attributed to the combined effects of mountain pine beetle, white pine blister rust, and fire suppression. The restoration and maintenance of whitebark pine populations require an understanding of all aspects of seed fate. In this paper, we review the literature on seed dispersal in whitebark pine. Clark's nutcracker, pine squirrels, and scatter-hoarding rodents are all known to influence whitebark pine seed fate and ultimately affect the ability of whitebark pine populations to regenerate. We also provide a general overview of the natural histories of the most influential species involved with whitebark pine seed fate: Clark's nutcracker and the pine squirrel.
Author: Teresa J. Lorenz Publisher: ISBN: Category : Clark's nutcracker Languages : en Pages : 68
Book Description
Whitebark pine is a critical component of subalpine ecosystems in western North America, where it contributes to biodiversity and ecosystem function and in some communities is considered a keystone species. Whitebark pine is undergoing rangewide population declines attributed to the combined effects of mountain pine beetle, white pine blister rust, and fire suppression. The restoration and maintenance of whitebark pine populations require an understanding of all aspects of seed fate. In this paper, we review the literature on seed dispersal in whitebark pine. Clark's nutcracker, pine squirrels, and scatter-hoarding rodents are all known to influence whitebark pine seed fate and ultimately affect the ability of whitebark pine populations to regenerate. We also provide a general overview of the natural histories of the most influential species involved with whitebark pine seed fate: Clark's nutcracker and the pine squirrel.
Author: Teresa J. Lorenz Publisher: ISBN: Category : Clark's nutcracker Languages : en Pages : 62
Book Description
Whitebark pine is a critical component of subalpine ecosystems in western North America, where it contributes to biodiversity and ecosystem function and in some communities is considered a keystone species. Whitebark pine is undergoing rangewide population declines attributed to the combined effects of mountain pine beetle, white pine blister rust, and fire suppression. The restoration and maintenance of whitebark pine populations require an understanding of all aspects of seed fate. In this paper, we review the literature on seed dispersal in whitebark pine. Clark's nutcracker, pine squirrels, and scatter-hoarding rodents are all known to influence whitebark pine seed fate and ultimately affect the ability of whitebark pine populations to regenerate. We also provide a general overview of the natural histories of the most influential species involved with whitebark pine seed fate: Clark's nutcracker and the pine squirrel.
Author: United States Department of Agriculture Publisher: CreateSpace ISBN: 9781508503743 Category : Languages : en Pages : 66
Book Description
Whitebark pine is a critical component of subalpine ecosystems in western North America, where it contributes to biodiversity and ecosystem function and in some communities is considered a keystone species. Whitebark pine is undergoing rangewide population declines attributed to the combined effects of mountain pine beetle, white pine blister rust, and fire suppression. The restoration and maintenance of whitebark pine populations require an understanding of all aspects of seed fate. In this paper, we review the literature on seed dispersal in whitebark pine. Clark's nutcracker, pine squirrels, and scatter-hoarding rodents are all known to influence whitebark pine seed fate and ultimately affect the ability of whitebark pine populations to regenerate. We also provide a general overview of the natural histories of the most influential species involved with whitebark pine seed fate: Clark's nutcracker and the pine squirrel.
Author: Publisher: ISBN: Category : Whitebark pine Languages : en Pages : 6
Book Description
Describes a prototype whitebark pine seed scarifier developed by the Missoula Technology and Development Center that allows workers to nick (scarify) seeds three times as fast as if they were doing so by hand, with reduced risk of injury. Populations of whitebark pine have declined over the past century because of white pine blister rust, insect infestations, and fire suppression. Whitebark pine seeds are a favored food of the grizzly bear, a threatened species protected by the Endangered Species Act in the 48 contiguous States. Whitebark pine trees, which may be the only trees growing in some sub-alpine and alpine areas of the northern Rocky Mountains, also catch snow during the winter. The drifts melt more slowly than thinner snowpack in bare areas, extending runoff. The scarifier should help reduce the costs of growing whitebark pine seedlings, possibly allowing more whitebark pines to be planted. Seeds collected from white-bark pine trees resistant to blister rust are germinated in nurseries. The germination rate increases from about 5 percent to 60 percent or more if each seed has a 1-mm-deep nick. Workers can nick about 400 seeds an hour by hand, compared to 1,500 seeds an hour when using the prototype scarifier. The scarifier costs about $1,000 to fabricate. Fabrication drawings will be available from the Missoula Technology and Development Center.
Author: Stephen W. Kress Publisher: Yale University Press ISBN: 0300204817 Category : Science Languages : en Pages : 382
Book Description
The inspiring story of a young ornithologist who reintroduced puffins where none had been seen for a century Project Puffin is the inspiring story of how a beloved seabird was restored to long-abandoned nesting colonies off the Maine coast. As a young ornithology instructor at the Hog Island Audubon Camp, Dr. Stephen W. Kress learned that puffins had nested on nearby islands until extirpated by hunters in the late 1800s. To right this environmental wrong, he resolved to bring puffins back to one such island--Eastern Egg Rock. Yet bringing the plan to reality meant convincing skeptics, finding resources, and inventing restoration methods at a time when many believed in "letting nature take its course." Today, Project Puffin has restored more than 1,000 puffin pairs to three Maine islands. But even more exciting, techniques developed during the project have helped to restore rare and endangered seabirds worldwide. Further, reestablished puffins now serve as a window into the effects of global warming. The success of Dr. Kress's project offers hope that people can restore lost wildlife populations and the habitats that support them. The need for such inspiration has never been greater.
Author: Jared Maxwell Beeton Publisher: University Press of Colorado ISBN: 1646420403 Category : History Languages : en Pages : 518
Book Description
The Geology, Ecology, and Human History of the San Luis Valley explores the rich landscapes and diverse social histories of the San Luis Valley, an impressive mountain valley spanning over 9,000 square miles that crosses the border of south-central Colorado and north-central New Mexico and includes many cultural traditions. Twenty-six expert scholars and educators—including geologists, geographers, biologists, ecologists, linguists, historians, sociologists, and consultants—uncover the natural and cultural history of the region, which serves as home to the Sangre de Cristo Mountains, the San Juan Mountains, Great Sand Dunes National Park and Preserve, and the Rio Grande headwaters. The first section, “The Geology and Ecology of the San Luis Valley,” surveys the geomorphology, hydrology, animal and plant life, conservation, management, and mining of the valley’s varied terrain. The second section, “Human History of the San Luis Valley,” recounts the valley’s human visitation and settlement, from early indigenous life to Spanish exploration to Hispanic and Japanese settlements. This section introduces readers to the region’s wide range of religious identities—Catholic, Latter-day Saint, Buddhist, Jehovah’s Witness, Amish, and Mennonite—and diverse linguistic traditions, including Spanish, English, Dutch, Danish, Japanese, and Mayan. The final section, “Travel Itineraries,” addresses recreation, specifically fly-fishing and rock climbing. The book provides a comprehensive overview of the endemic flora and fauna, human history of indigenous lifeways, and diverse settlement patterns that have shaped the region. The Geology, Ecology, and Human History of the San Luis Valley will appeal to students and scholars of geology, ecology, environmental history, and cultural history, as well as residents and tourists seeking to know more about this fascinating and integral part of Colorado and New Mexico. Contributors: Benjamin Armstrong, Timothy Armstrong, Deacon Aspinwall, Robert Benson, Lorrie Crawford, Kristy Duran, Jeff Elison, Eric Harmon, Devin Jenkins, Bradley G. Johnson, Robert M. Kirkham, Bessie Konishi, Angie Krall, Richard D. Loosbrock, Richard Madole, A. W. Magee, Victoria Martinez, James McCalpin, Mark Mitchell, R. Nathan Pipitone, Andrew Valdez, Rio de la Vista, Damián Vergara Wilson
Author: Jeffrey S. Marks Publisher: ISBN: 9780931130199 Category : Birds Languages : en Pages : 0
Book Description
A definitive account of the Montana's birds covering historical aspects, conservation status, relative abundance, and ecology of all species known to occur in the state.
Author: Ronald A. Nussbaum Publisher: Caxton Press ISBN: Category : Amphibians Languages : en Pages : 352
Book Description
Written by outstanding authorities in the field, this Northwest guide tells in interesting and readable fashion how to find and identify the various salamanders, frogs, turtles, lizards, and snakes that inhabit Washington, Oregon, Idaho, and British Columbia.
Author: Teresa J. Lorenz
Author: Teresa J. Lorenz
Author: Teresa J. Lorenz
Author: United States Department of Agriculture
Author: 
Author: Adam M. Siepielski
Author: Harry Ardell Fowells
Author: Stephen W. Kress
Author: Jared Maxwell Beeton
Author: Jeffrey S. Marks
Author: Ronald A. Nussbaum