The Evergreen Bagworm
Author: Leonard Haseman
Publisher:
Published: 1912
Total Pages: 34
ISBN-13:
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Author: Leonard Haseman
Publisher:
Published: 1912
Total Pages: 34
ISBN-13:
DOWNLOAD EBOOKAuthor: Frank Morton Jones
Publisher:
Published: 1928
Total Pages: 44
ISBN-13:
DOWNLOAD EBOOKAuthor: Kenn Kaufman
Publisher: Houghton Mifflin Harcourt
Published: 2012
Total Pages: 419
ISBN-13: 061845697X
DOWNLOAD EBOOKPresents an illustrated field guide to the plants, wildlife, night sky, and natural environments of New England.
Author: Leland Ossian Howard
Publisher:
Published: 1908
Total Pages: 16
ISBN-13:
DOWNLOAD EBOOKAuthor: F. R. Wylie
Publisher: CABI
Published: 2012
Total Pages: 408
ISBN-13: 1845936361
DOWNLOAD EBOOK"The management of tropical forest ecosystems is essential to the health of the planet. This book addresses forest insect pest problems across the world's tropics, addressing the pests' ecology, impact and possible approaches for their control. Fully updated, this second edition also includes discussions of new areas of interest including climate change, invasive species, forest health and plant clinics. This work is an indispensible resource for students, researchers and practitioners of forestry, ecology, pest management and entomology in tropical and subtropical countries."--pub. desc.
Author: B. Venkateswarlu
Publisher: Springer Science & Business Media
Published: 2011-11-22
Total Pages: 617
ISBN-13: 9400722206
DOWNLOAD EBOOKCrops experience an assortment of environmental stresses which include abiotic viz., drought, water logging, salinity, extremes of temperature, high variability in radiation, subtle but perceptible changes in atmospheric gases and biotic viz., insects, birds, other pests, weeds, pathogens (viruses and other microbes). The ability to tolerate or adapt and overwinter by effectively countering these stresses is a very multifaceted phenomenon. In addition, the inability to do so which renders the crops susceptible is again the result of various exogenous and endogenous interactions in the ecosystem. Both biotic and abiotic stresses occur at various stages of plant development and frequently more than one stress concurrently affects the crop. Stresses result in both universal and definite effects on plant growth and development. One of the imposing tasks for the crop researchers globally is to distinguish and to diminish effects of these stress factors on the performance of crop plants, especially with respect to yield and quality of harvested products. This is of special significance in view of the impending climate change, with complex consequences for economically profitable and ecologically and environmentally sound global agriculture. The challenge at the hands of the crop scientist in such a scenario is to promote a competitive and multifunctional agriculture, leading to the production of highly nourishing, healthy and secure food and animal feed as well as raw materials for a wide variety of industrial applications. In order to successfully meet this challenge researchers have to understand the various aspects of these stresses in view of the current development from molecules to ecosystems. The book will focus on broad research areas in relation to these stresses which are in the forefront in contemporary crop stress research.
Author: Ricardo Carriere
Publisher: Zed Books
Published: 1996-08-15
Total Pages: 290
ISBN-13: 9781856494380
DOWNLOAD EBOOKThe expansion of the pulp and paper industry is one of the most important causes of land and water conflicts in the South. This book examines the threat to livelihood, soil and biodiversity generated by large-scale pulpwood plantations in the South.
Author: Tim Caro
Publisher: Island Press
Published: 2010-06-23
Total Pages: 394
ISBN-13: 159726959X
DOWNLOAD EBOOKThe vast scope of conservation problems has forced biologists and managers to rely on "surrogate" species to serve as shortcuts to guide their decision making. These species-known by a host of different terms, including indicator, umbrella, and flagship species-act as proxies to represent larger conservation issues, such as the location of biodiversity hotspots or general ecosystem health. Synthesizing an immense body of literature, conservation biologist and field researcher Tim Caro offers systematic definitions of surrogate species concepts, explores biological theories that underlie them, considers how surrogate species are chosen, critically examines evidence for and against their utility, and makes recommendations for their continued use. The book clarifies terminology and contrasts how different terms are used in the real world considers the ecological, taxonomic, and political underpinnings of these shortcuts identifies criteria that make for good surrogate species outlines the circumstances where the application of the surrogate species concept shows promise Conservation by Proxy is a benchmark reference that provides clear definitions and common understanding of the evidence and theory behind surrogate species. It is the first book to review and bring together literature on more than fifteen types of surrogate species, enabling us to assess their role in conservation and offering guidelines on how they can be used most effectively.
Author: Amy Bartlett Wright
Publisher: Houghton Mifflin Harcourt
Published: 1998-05-15
Total Pages: 138
ISBN-13: 9780395911846
DOWNLOAD EBOOKDiscusses 120 of the most common caterpillars and the adult butterflies and moths they become and gives advice on how to raise caterpillars to adults.