Download or read book Populus written by and published by . This book was released on 1990 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliographies and Literature of Agriculture written by and published by . This book was released on 1990 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recent Reports written by and published by . This book was released on 1985 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecology and Management of Neotropical Migratory Birds written by Thomas E. Martin and published by Oxford University Press. This book was released on 1995-10-19 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: The apparent decline in numbers among many species of migratory songbirds is a timely subject in conservation biology, particularly for ornithologists, ecologists, and wildlife managers. This book is an attempt to discuss the problem in full scope. It presents an ambitious, comprehensive assessment of the current status of neotropical migratory birds in the U.S., and the methods and strategies used to conserve migrant populations. Each chapter is an essay reviewing and assessing the trend from a different viewpoint, all written by leaders in the fields of ornithology, conservation, and population biology.

Download or read book America s Ancient Forests written by Thomas M. Bonnicksen and published by John Wiley & Sons. This book was released on 2000-02-07 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the time of European discovery, the ancient North Americanforests stretched across nearly half the continent. And while todaylittle remains of this past glory, efforts are underway to bringback some of the diverse ecosystems of that era. America's AncientForests: From the Ice Age to the Age of Discovery providesscientists and professionals with essential information for forestrestoration and conservation projects, while presenting acompelling and far-reaching account of how the North Americanlandscape has evolved over the past 18,000 years. The book weaves historical accounts and scientific knowledge into adynamic narrative about the ancient forests and the events thatshaped them. Divided into two major parts, it covers first theglaciers and forests of the Ice Age and the influences of nativepeoples, and then provides an in-depth look at these majesticforests through the eyes of the first European explorers. Changesin climate and elevation, the movement of trees northward, theassembly of modern forests, and qualities that all ancient forestsshared are also thoroughly examined. A special feature of this book is its self-contained introductionto the early history of Native American peoples and theirenvironment. The author draws on his roots in the Osage nation aswell as painstaking research through the historical record,offering a complete discussion of how the cultural practices ofhunting, agriculture, and fire helped form the ancient forests.

Download or read book Dixie National Forest N F Pockets Resource Management Project written by and published by . This book was released on 2008 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Spring Fires in a Semimature Trembling Aspen Stand in Central Alberta written by Martin E. Alexander and published by . This book was released on 1991 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a May 1972 study in central Alberta, 13 0.5 ha plots of semimature trembling aspen were burned experimentally under various conditions to provide new information on fire behaviour and impact, with particular regard to aspen ecosystems. Fire data were documented for all plots, particularly head fire rates of spread and frontal fire intensities. The following August an assessment was made of the impact of burning on aspen overstory mortality and understory vegetation response. In May 1978 two of the plots were jointly reburned. The August survey that followed assessed the effects of the reburning.

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