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Fluctuating Populations And Apparent Competition Microform
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Author :Chad E. (Chad Eric) Brassil Publisher :Library and Archives Canada = Bibliothèque et Archives Canada ISBN 13 :9780494026564 Total Pages :314 pages Book Rating :4.0/5 (265 download)
Book Synopsis Fluctuating Populations and Apparent Competition [microform] by : Chad E. (Chad Eric) Brassil
Download or read book Fluctuating Populations and Apparent Competition [microform] written by Chad E. (Chad Eric) Brassil and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fact that populations vary over time has often been overlooked in ecological theory. Here I focus on the importance of fluctuating population sizes in a simple 3-species food web consisting of 2 populations with a shared enemy population. Classic apparent competition theory predicts negative indirect effects between different prey species via their effects on the population size of a shared enemy, but reciprocal negative interactions have rarely been observed in empirical studies. To reconcile this apparent contradiction, I systematically examined the indirect interactions across all potential parameter values for a family of host-parasitoid models. Many indirect effects become indistinguishable from 0 in at least one direction because of population cycles and realistic statistical limits for detecting small effects. In addition to reducing the strength of negative interactions, cycles generated by endogenous host-parasitoid interactions can lead to positive indirect interactions between host species. Population cycles can be generated by exogenous rather than endogenous mechanisms. Exogenous variation refers to temporal variation in the environment. I ask whether such environmental variation could also generate positive indirect effects. Positive indirect effects can occur when environmental variation is close to the natural period of the biological system. The strength of indirect effects become more sensitive to environmental variation with the inclusion of more nonlinear relationships in the per capita growth rates. Temporal variation can change not only the ecological interactions among species in food webs, but also the course of evolution of foraging traits of species within those food webs. The amount of unsuccessful search time required before a parasitoid alters its searching cues (the "giving-up time") is modeled in order to understand the expected evolution of this behavioral trait. In the model considered here, giving-up times evolve to values greater than 0.4 times the length of the season when population dynamics are stable. Lower giving-up times evolve when populations cycle due to endogenous population interactions or to environmental stochasticity. Both endogenous and exogenous population fluctuations can alter the evolution of foraging traits and can change the qualitative nature of ecological interactions between species in a variety of models of shared predation.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Redesigning Library Services by : Michael Keeble Buckland
Download or read book Redesigning Library Services written by Michael Keeble Buckland and published by Chicago : American Library Association. This book was released on 1992 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This blueprint provides a new framework within which to attempt to understand and to plan library services in the future.
Book Synopsis Climate Change and Indigenous Peoples in the United States by : Julie Koppel Maldonado
Download or read book Climate Change and Indigenous Peoples in the United States written by Julie Koppel Maldonado and published by Springer. This book was released on 2014-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.
Download or read book Wildlife Research written by and published by . This book was released on 2014 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Competitive Advantage by : Michael E Krivdo
Download or read book The Competitive Advantage written by Michael E Krivdo and published by Independently Published. This book was released on 2019-05-23 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 8 of the Army University Large Scale Combat Operations series. The Competitive Advantage: Special Operations Forces in Large Scale Combat Operations presents twelve historical case studies of special operations forces from World War I through Operation Iraqi Freedom. This volume sheds light upon the emerging roles, missions, and unique capabilities that have forged a path for Army Special Operations Forces today. These case studies set Large Scale Combat Operations in the center and place ARSOF's role in the forefront. If a reader were to take one piece from this volume, it would be the clear understanding of the close synergy that occurs between the Conventional Force and SOF in Large Scale Combat Operations for major wars in the 20th and early 21st century. That synergy should provide a broad azimuth for military planners and practitioners to follow as the Army, SOF, and the Joint Force combine to preserve the peace, defend the Nation, and defeat any adversary.
Book Synopsis Diet and Health by : National Research Council
Download or read book Diet and Health written by National Research Council and published by National Academies Press. This book was released on 1989-01-01 with total page 765 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diet and Health examines the many complex issues concerning diet and its role in increasing or decreasing the risk of chronic disease. It proposes dietary recommendations for reducing the risk of the major diseases and causes of death today: atherosclerotic cardiovascular diseases (including heart attack and stroke), cancer, high blood pressure, obesity, osteoporosis, diabetes mellitus, liver disease, and dental caries.
Book Synopsis A Century of Innovation by : 3M Company
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Book Synopsis Understanding Community Policing by : Bureau of Justice Assistance
Download or read book Understanding Community Policing written by Bureau of Justice Assistance and published by Createspace Independent Publishing Platform. This book was released on 2014-04-04 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The movement toward community policing has gained momentum in recent years as police and community leaders search for more effective ways to promote public safety and to enhance the quality of life in their neighborhoods. Chiefs, sheriffs, and other policing officials are currently assessing what changes in orientation, organization, and operations will allow them to benefit the communities they serve by improving the quality of the services they provide.Community policing encompasses a variety of philosophical and practical approaches and is still evolving rapidly. Community policing strategies vary depending on the needs and responses of the communities involved; however, certain basic principles and considerations are common to all community policing efforts.To date, no succinct overview of community policing exists for practitioners who want to learn to use this wide-ranging approach to address the problems of crime and disorder in their communities. Understanding Community Policing, prepared by the Community Policing Consortium, is the beginning of an effort to bring community policing into focus. The document, while not a final product, assembles and examines the critical components of community policing to help foster the learning process and to structure the experimentation and modification required to make community policing work.Established and funded by the U.S. Department of Justice, Bureau of Justice Assistance (BJA), the Community Policing Consortium includes representatives from the International Association of Chiefs of Police (IACP), the National Sheriffs' Association, the Police Executive Research Forum (PERF), and the Police Foundation. BJA gave the Consortium the task of developing a conceptual framework for community policing and assisting agencies in implementing community policing. The process was designed to be a learning experience, allowing police, community members, and policymakers to assess the effectiveness of different implementation procedures and the impact of community policing on local levels of crime, violence, fear, and other public-safety problems.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 1038 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Commanding an Air Force Squadron by : Col Usaf Timmons, Timothy
Download or read book Commanding an Air Force Squadron written by Col Usaf Timmons, Timothy and published by Createspace Independent Pub. This book was released on 2012-08-07 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The privilege of commanding an Air Force squadron, despite its heavy responsibilities and unrelenting challenges, represents for many Air Force officers the high point of their careers. It is service as a squadron commander that accords true command authority for the first time. The authority, used consistently and wisely, provides a foundation for command. As with the officer's commission itself, command authority is granted to those who have earned it, both by performance and a revealed capacity for the demands of total responsibility. But once granted, it much be revalidated every day. So as one assumes squadron command, bringing years of experience and proven record to join with this new authority, one might still need a little practical help to success with the tasks of command. This book offers such help. “Commanding an Air Force Squadron” brings unique and welcome material to a subject other books have addressed. It is rich in practical, useful, down-to-earth advice from officers who have recently experienced squadron command. The author does not quote regulations, parrot doctrine, or paraphrase the abstractions that lace the pages of so many books about leadership. Nor does he puff throughout the manuscript about how he did it. Rather, he presents a digest of practical wisdom based on real-world experience drawn from the reflection of many former commanders from any different types of units. He addresses all Air Force squadron commanders, rated and nonrated, in all sorts of missions worldwide. Please also see a follow up to this book entitled “Commanding an Air Force Squadron in the Twenty-First Century (2003)” by Jeffry F. Smith, Lieutenant Colonel, USAF.
Book Synopsis Changing National Identities at the Frontier by : Andrés Reséndez
Download or read book Changing National Identities at the Frontier written by Andrés Reséndez and published by Cambridge University Press. This book was released on 2005 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores how the diverse and fiercely independent peoples of Texas and New Mexico came to think of themselves as members of one particular national community or another in the years leading up to the Mexican-American War. Hispanics, Native Americans, and Anglo Americans made agonizing and crucial identity decisions against the backdrop of two structural transformations taking place in the region during the first half of the 19th century and often pulling in opposite directions.
Book Synopsis Social Theory For A Changing Society by : Pierre Bourdieu
Download or read book Social Theory For A Changing Society written by Pierre Bourdieu and published by Routledge. This book was released on 2019-07-11 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: "There is in modem society a structural change that underlies many of the social changes with which the conference was concerned. My argument here will be that this is a qualitative change in the way society is organized, a change with many implications. I will call this a change from primordial and spontaneous social organization to constructed social organization (see Coleman 1990, Chapters 2, 3, and 24 for an extended examination of this change). The common definitions of these terms contain some hint of what I mean, but I will describe the change more fully to ensure that it is clearly understood. By primordial social organization I mean social organization that has its origins in the relationships established by childbirth. Not all these relations are activated in all cultures, but some subset of these relations forms the basis for all primitive and traditional social organization. From these relations, more complex structures unfold. For example, from these relations come families; from families come clans; from clans, villages; and from villages, tribes, ethnicities, or societies."
Book Synopsis The Federal Budget by : Allen Schick
Download or read book The Federal Budget written by Allen Schick and published by Brookings Institution Press. This book was released on 2008-05-31 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: The federal budget impacts American policies both at home and abroad, and recent concern over the exploding budgetary deficit has experts calling our nation's policies "unsustainable" and "system-dooming." As the deficit continues to grow, will America be fully able to fund its priorities, such as an effective military and looking after its aging population? In this third edition of his classic book The Federal Budget, Allen Schick examines how surpluses projected during the final years of the Clinton presidency turned into oversized deficits under George W. Bush. In his detailed analysis of the politics and practices surrounding the federal budget, Schick addresses issues such as the collapse of the congressional budgetary process and the threat posed by the termination of discretionary spending caps. This edition updates and expands his assessment of the long-term budgetary outlook, and it concludes with a look at how the nation's deficit will affect America now and in the future. "A clear explanation of the federal budget... [Allen Schick] has captured the politics of federal budgeting from the original lofty goals to the stark realities of today."—Pete V. Domenici, U.S. Senate
Book Synopsis School, Family, and Community Partnerships by : Joyce L. Epstein
Download or read book School, Family, and Community Partnerships written by Joyce L. Epstein and published by Corwin Press. This book was released on 2018-07-19 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strengthen programs of family and community engagement to promote equity and increase student success! When schools, families, and communities collaborate and share responsibility for students′ education, more students succeed in school. Based on 30 years of research and fieldwork, the fourth edition of the bestseller School, Family, and Community Partnerships: Your Handbook for Action, presents tools and guidelines to help develop more effective and more equitable programs of family and community engagement. Written by a team of well-known experts, it provides a theory and framework of six types of involvement for action; up-to-date research on school, family, and community collaboration; and new materials for professional development and on-going technical assistance. Readers also will find: Examples of best practices on the six types of involvement from preschools, and elementary, middle, and high schools Checklists, templates, and evaluations to plan goal-linked partnership programs and assess progress CD-ROM with slides and notes for two presentations: A new awareness session to orient colleagues on the major components of a research-based partnership program, and a full One-Day Team Training Workshop to prepare school teams to develop their partnership programs. As a foundational text, this handbook demonstrates a proven approach to implement and sustain inclusive, goal-linked programs of partnership. It shows how a good partnership program is an essential component of good school organization and school improvement for student success. This book will help every district and all schools strengthen and continually improve their programs of family and community engagement.
Download or read book Dissertation Abstracts written by and published by . This book was released on 1964 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Nation at Risk by : United States. National Commission on Excellence in Education
Download or read book A Nation at Risk written by United States. National Commission on Excellence in Education and published by . This book was released on 1983 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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