Population Harvesting Mpb 27 Volume 27

Author : Wayne M. Getz,Robert G. Haight
Publisher : Princeton University Press
Page : 414 pages
File Size : 43,7 Mb
Release : 2020-03-31
Category : Science
ISBN : 9780691209630

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Population Harvesting (MPB-27), Volume 27 by Wayne M. Getz,Robert G. Haight Pdf

Whether in felling trees for wood, rearing insects for biological control, or culling animals for conservation purposes, efficient management of biological systems requires quantitative analysis of population growth and harvesting policies. Aiming to encourage the exchange of ideas among scientists involved in the management of fisheries, wildlife, forest stands, and pest control, the authors of this work present a general framework for modeling populations that reproduce seasonally and that have age or stage structure as an essential component of management strategy. The book represents the first time that examples from such diverse areas of biological resource management have been brought together in a unified modeling framework using the standard notation of mathematical systems theory. In addition, the authors combine a nonlinear extension of Leslie matrix theory and certain linear elements, thereby permitting interesting analytical results and the creation of compact, realistic simulation models of resource systems.

Author : David Tilman
Publisher : Princeton University Press
Page : 376 pages
File Size : 46,8 Mb
Release : 2020-03-31
Category : Science
ISBN : 9780691209593

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Plant Strategies and the Dynamics and Structure of Plant Communities. (MPB-26), Volume 26 by David Tilman Pdf

Although ecologists have long considered morphology and life history to be important determinants of the distribution, abundance, and dynamics of plants in nature, this book contains the first theory to predict explicitly both the evolution of plant traits and the effects of these traits on plant community structure and dynamics. David Tilman focuses on the universal requirement of terrestrial plants for both below-ground and above-ground resources. The physical separation of these resources means that plants face an unavoidable tradeoff. To obtain a higher proportion of one resource, a plant must allocate more of its growth to the structures involved in its acquisition, and thus necessarily obtain a lower proportion of another resource. Professor Tilman presents a simple theory that includes this constraint and tradeoff, and uses the theory to explore the evolution of plant life histories and morphologies along productivity and disturbance gradients. The book shows that relative growth rate, which is predicted to be strongly influenced by a plant's proportional allocation to leaves, is a major determinant of the transient dynamics of competition. These dynamics may explain the differences between successions on poor versus rich soils and suggest that most field experiments performed to date have been of too short a duration to allow unambiguous interpretation of their results.

Author : Wayne M. Getz,Robert G. Haight
Publisher : Princeton University Press
Page : 416 pages
File Size : 55,7 Mb
Release : 1989-04-21
Category : Nature
ISBN : 0691085161

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Population Harvesting by Wayne M. Getz,Robert G. Haight Pdf

Whether in felling trees for wood, rearing insects for biological control, or culling animals for conservation purposes, efficient management of biological systems requires quantitative analysis of population growth and harvesting policies. Aiming to encourage the exchange of ideas among scientists involved in the management of fisheries, wildlife, forest stands, and pest control, the authors of this work present a general framework for modeling populations that reproduce seasonally and that have age or stage structure as an essential component of management strategy. The book represents the first time that examples from such diverse areas of biological resource management have been brought together in a unified modeling framework using the standard notation of mathematical systems theory. In addition, the authors combine a nonlinear extension of Leslie matrix theory and certain linear elements, thereby permitting interesting analytical results and the creation of compact, realistic simulation models of resource systems.

Author : Sara Teitelbaum
Publisher : UBC Press
Page : 416 pages
File Size : 40,9 Mb
Release : 2016-10-07
Category : Technology & Engineering
ISBN : 9780774831918

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Community Forestry in Canada by Sara Teitelbaum Pdf

This book brings together the work of over twenty-five researchers to provide a comparative and empirically rich portrait of community forestry policy and practice in Canada. Tackling all forestry regions from Newfoundland to British Columbia, it unearths the history of community forestry across the nation, demonstrating strong regional differences tied to patterns of policy-making and cultural traditions. Case studies reveal innovative practices in governance and ecological management but also uncover challenges related to government support and market access. This book also considers the future of the sector, including the role of institutional reform, multiscale networks, and adaptive management strategies.

Author : Anonim
Publisher : Unknown
Page : 492 pages
File Size : 45,7 Mb
Release : 1989
Category : Forests and forestry
ISBN : UCR:31210020135578

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General Technical Report INT. by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 128 pages
File Size : 53,7 Mb
Release : 1989
Category : Lodgepole pine
ISBN : IND:30000098201399

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Proceedings--Symposium on the Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle, Kalispell, MT, July 12-14, 1988 by Anonim Pdf

Author : David N. Cole,Edward Robbins Burroughs,Patricia L. Andrews,Robert E. Keane,Susan K. Hagle,Warren P. Clary
Publisher : Unknown
Page : 532 pages
File Size : 40,9 Mb
Release : 1989
Category : Blister rust
ISBN : OSU:32435069022002

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White Pine Blister Rust in Northern Idaho and Western Montana by David N. Cole,Edward Robbins Burroughs,Patricia L. Andrews,Robert E. Keane,Susan K. Hagle,Warren P. Clary Pdf

Author : Markus Schnorbus
Publisher : Unknown
Page : 40 pages
File Size : 45,6 Mb
Release : 2011
Category : Forest hydrology
ISBN : MINN:31951D03276087F

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A Synthesis of the Hydrological Consequences of Large-scale Mountain Pine Beetle Disturbance by Markus Schnorbus Pdf

The current synthesis is a review of research examining the effects of large-scale mountain pine beetle (MPB)-related disturbance conducted predominantly over the past five years. The emphasis is on research that explicitly examines the impact of beetle kill (or biotic disturbance in general) and the cumulative effects of large scale salvage harvesting operations in response to beetle kill. In general, forest disturbance has been found to increase snow accumulation and melt, reduce interception loss and evaporation, and increase runoff and stream flow.--Document.

Author : Pacific Forestry Centre,Mountain Pine Beetle Initiative (Canada)
Publisher : Unknown
Page : 304 pages
File Size : 42,8 Mb
Release : 2006
Category : Forest management
ISBN : 0662426231

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The Mountain Pine Beetle by Pacific Forestry Centre,Mountain Pine Beetle Initiative (Canada) Pdf

"This book presents a synthesis of published information on mountain pine beetle (Dendroctonus ponderosae Hopkins [Coleoptera: Scolytidae]) biology and management with an emphasis on lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) forests of western Canada. Intended as a reference for researchers as well as forest managers, the book covers three main subject areas: mountain pine beetle biology, management, and socioeconomic concerns. The chapters on biology cover taxonomy, life history and habits, distribution, insect-host tree interactions, development and survival, epidemiology, and outbreak history. The management section covers management strategy, survey and detection, proactive and preventive management, and decision support tools. The chapters on socioeconomic aspects include an economic examination of management programs and the utilization of post-beetle salvage timber in solid wood, panelboard, pulp and paper products."--Publisher's description.

Author : Francisco Borrego,Susana Larrucea,Rafael Solana,Raquel Tarazona
Publisher : Frontiers Media SA
Page : 224 pages
File Size : 47,9 Mb
Release : 2016-09-08
Category : Immunologic diseases. Allergy
ISBN : 9782889199341

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NK Cell-Based Cancer Immunotherapy by Francisco Borrego,Susana Larrucea,Rafael Solana,Raquel Tarazona Pdf

Natural killer (NK) cells are innate lymphoid cells that have a significant role in regulating the defenses against cancer development and certain viral infections. They are equipped with an array of activating and inhibitory receptors that stimulate or diminish NK cell activity, respectively. Inhibitory receptors include, among others, the MHC class I ligands killer cell immunoglobulin-like receptors (KIR) in humans, and members of the Ly49 family of receptors in mice, and CD94/NKG2A. Activating receptors include cytokine and chemokine receptors, and those that interact with ligands expressed on target cells, such as the natural cytotoxicity receptors or NCRs (NKp30, NKp44 and NKp46), NKG2D, CD244 and DNAM-1. In addition, NK cells express Fc?RIIIA or CD16, the receptor that exerts antibody-dependent cell mediated cytotoxicity (ADCC). NK cells also express the death ligands FasL and TRAIL. The killing or sparing of target cells depends on the integration of distinct signals that originate from NK cell receptors. NK cells spare healthy cells that express normal levels of MHC class I molecules and low amounts of stress-induced self-molecules, whereas they kill target cells that down-regulate MHC class I molecules and/or up-regulate stress-induced self-molecules. The latter are common signatures of virus-infected cells and tumors. All the accumulated knowledge on NK cell biology, along with many clinical observations, is driving multiple efforts to improve the arsenal of NK cell-based therapeutic tools in the fight against malignant diseases. Indeed, NK cell-based immunotherapy is becoming a promising approach for the treatment of many cancers. It is well known that NK cells have a significant role in the anti-tumor effect of therapeutic antibodies that use ADCC as a mechanism of action. In addition to this, administration of autologous and allogeneic NK cells after activation and expansion ex vivo is used in the treatment of cancer. Moreover, adoptive transfer of NK cell lines has been tested in humans, and genetically modified NK cells expressing chimeric antigen receptors are being studied in preclinical models for potential use in the clinic.

Author : A. Townsend Peterson
Publisher : Princeton University Press
Page : 330 pages
File Size : 44,6 Mb
Release : 2011-11-20
Category : Science
ISBN : 9780691136882

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Ecological Niches and Geographic Distributions (MPB-49) by A. Townsend Peterson Pdf

Terminology, conceptual overview, biogeography, modeling.

Author : Izak Bos,Peter Caligari
Publisher : Springer Science & Business Media
Page : 356 pages
File Size : 44,9 Mb
Release : 2013-11-21
Category : Science
ISBN : 9789401584326

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Selection Methods in Plant Breeding by Izak Bos,Peter Caligari Pdf

Our requirement for plant breeders to be successful has never been greater. However one views the forecasted numbers for future population growth we will need, in the immediate future, to be feeding, clothing and housing many more people than we do, inadequately, at present. Plant breeding represents the most valuable strategy in increasing our productivity in a way that is sustainable and environmentally sensitive. Plant breeding can rightly be considered as one of the oldest multidisciplin ary subjects that is known to humans. It was practised by people who first started to carry out a settled form of agriculture. The art, as it must have been at that stage, was applied without any formal underlying framework, but achieved dramatic results, as witnessed by the forms of cultivated plants we have today. We are now learning how to apply successfully the results of yet imperfect scientific knowledge. This knowledge is, however, rapidly develop ing, particularly in areas of tissue culture, biotechnology and molecular biology. Plant breeding's inherent multifaceted nature means that alongside obvious subject areas like genetics we also need to consider areas such as: statistics, physiology, plant pathology, entomology, biochemistry, weed science, quality, seed characteristics, reproductive biology, trial design, se lection and computing.

Author : Anonim
Publisher : Unknown
Page : 452 pages
File Size : 40,7 Mb
Release : 2009
Category : Non-timber forest products
ISBN : MINN:31951P01163041Z

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Non-wood News by Anonim Pdf

Author : Brian Peter,Bryan Edward Cooper Bogdanski
Publisher : Unknown
Page : 40 pages
File Size : 49,6 Mb
Release : 2010
Category : Forest management
ISBN : MINN:31951D031016572

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The Economics of Salvage Harvesting and Reforestation in British Columbia's Mountain Pine Beetle-affected Forests by Brian Peter,Bryan Edward Cooper Bogdanski Pdf

In stands with significant mountain pine beetle (MPB) mortality, forest managers face a range of choices including clearcut harvesting, partial cutting, various rehabilitation strategies, and non-intervention. These choices involve many long-term costs, benefits, and risks, some of which can be assessed through economic analysis. After reviewing the context for this issue, the authors provided case studies that span the more likely stand-level problems faced by decision makers. All analyses were conducted from the perspective of the landowner (i.e., government) rather than the user of the resource (i.e., licensee). The insights from the case studies form a basis to answer the following core questions: Are some stand types better left unsalvaged? What economic/silvicultural assumptions produce higher stand values when salvaging is foregone? In areas that cannot be salvaged, is reforestation a profitable investment? Finally, does partial cutting make sense economically?--Document.

Author : Anonim
Publisher : Canadian Museum of Civilization/Musee Canadien Des Civilisations
Page : 448 pages
File Size : 40,5 Mb
Release : 2008
Category : Climatic changes
ISBN : 0662051750

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From Impacts to Adaptation by Anonim Pdf

Discusses current and future risks and opportunities that climate change presents to Canada, with a focus on human and managed systems. Based on analysis of existing knowledge.