Invasions Usa

Invasions USA PDF
Author: Michael Bliss
Publisher: Rowman & Littlefield Publishers
ISBN: 9781442236516
Size: 75.62 MB
Format: PDF, Docs
Category : History
Languages : en
Pages : 169
View: 1246

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Of the twenty or so science fiction films produced in America during the 1950s, there is a fascinating subset of nine films that do more than portray an invasion. These films use the invasions as metaphors for assaults against the integrity of various things, such as the self, marriage, and notions involving the supremacy of the human race.

Invasions Usa

Invasions USA PDF
Author: Michael Bliss
Publisher: Rowman & Littlefield
ISBN: 1442236523
Size: 36.65 MB
Format: PDF, ePub
Category : Performing Arts
Languages : en
Pages : 188
View: 4888

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Out of more than 180 science fiction films produced in the United States between 1950 and 1959, twenty were concerned with the notion of an invasion. Of these, a select number used the invasions as metaphors of issues that were of importance to America at the time, such as assaults upon individuality and marriage and debates about the supremacy of the human race. The invasion may be real (The Day the Earth Stood Still and War of the Worlds), dreamed (Invaders from Mars), or the result of a mental breakdown, as seems to be the case in Invasion of the Body Snatchers. Real or not, all of these massive disturbances to the status quo convey the same anxiety: In the 1950s, many Americans felt that things in their world weren’t quite right, and this sense of unease was expressed in the country’s art, notably these films. In Invasions USA: The Essential Science Fiction Films of the 1950s, Michael Bliss examines movies that stripped away the veneer of normality during a decade often portrayed as the last innocent period in American history. From a boy’s nightmares about his alien-controlled parents and a young woman’s fears that her fiancé has been replaced by an emotionless alien to an extraterrestrial visitor who comes to warn mankind about its self-destructive ways, the stories of these films offer a variety of messages, both subtle and overt. With detailed discussions and analyses of the films in question, this book examines a unique group of movies with profound messages. By exploring depictions of insecurities—whether personal or political—Bliss shows how science fiction films spoke to American audiences deeply troubled by their circumstances. Invasions USA will appeal to science fiction buffs and film aficionados interested in this significant phenomenon in movie and cultural history.

Home Invasion Prevention

Home Invasion Prevention PDF
Author: Frank Hilliard
Publisher: Lulu.com
ISBN: 055704376X
Size: 32.70 MB
Format: PDF, Docs
Category :
Languages : en
Pages : 75
View: 5177

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This book proposes a new, innovative approach that will give you, or your spouse, the ability to prevent, deflect or defeat even the most determined attack against your home. It will suggest a number of measures you can take. It will discuss concepts you won't read anywhere else to provide dramatically better physical security. Most importantly, everything it proposes is cumulative, each step adding to the one previous, so whatever you do will be an improvement over whatever you've done, or not done, in the past.

American Invasions

American Invasions PDF
Author: Rocky M. Mirza Ph. D.
Publisher: Trafford Publishing
ISBN: 1426938489
Size: 64.93 MB
Format: PDF, ePub
Category : History
Languages : en
Pages : 332
View: 285

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"American Invasions: Canada to Afghanistan, 1775 to 2010" is a thought-provoking analysis of the reasons for American invasions and warmongering over the last two centuries. Contrary to the views expressed by the Western media and Western historians the American Empire is not a force for the promotion of free thinking and democracy but instead a force for imperial conquests and imposed dictatorships through the use of a military-industrial complex, fed by the American Empire outspending the rest of the world combined, on weapons of mass destruction. The American Empire has used and will continue to use the most sophisticated weapons, from nuclear bombs to bunker-busting bombs to land mines to chemical and biological weapons, on defenseless men, women, and children to feed its insatiable appetite for warmongering and imperial expansion. It combines military bases around the world with military prisons used for torture and extraction of information. Its navy patrols every corner of the globe, and its planes can rain down bombs from the heavens on every civilian on the planet.

Biological Invasions Belowground Earthworms As Invasive Species

Biological Invasions Belowground  Earthworms as Invasive Species PDF
Author: Paul F. Hendrix
Publisher: Springer Science & Business Media
ISBN: 9781402054297
Size: 22.94 MB
Format: PDF
Category : Science
Languages : en
Pages : 129
View: 4506

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The papers in this book are based on efforts by an international group of soil ecologists to assess the biological and ecological mechanisms of earthworm invasions. They examine their geographic extent and impacts on terrestrial ecosystems, and possible means by which earthworm invasions might be mitigated. The book broadens the discussion on invasion biology and ecology to belowground systems.

Plant Invasions In Protected Areas

Plant Invasions in Protected Areas PDF
Author: Llewellyn C. Foxcroft
Publisher: Springer Science & Business Media
ISBN: 9400777507
Size: 76.63 MB
Format: PDF, Docs
Category : Science
Languages : en
Pages : 656
View: 3862

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This book is the first comprehensive global review of all aspects of alien plant invasions in protected areas. It provides insights into advances in invasion ecology emanating from work in protected areas, and the link to locally relevant management support for protected areas. The book provides in-depth case studies, illuminating interesting and insightful knowledge that can be shared across the global protected area network. The book includes the collective understanding of 80 ecologists and managers to extract as much information as possible that will support the long-term management of protected areas, and the biodiversity and associated ecosystem services they maintain. “This outstanding volume draws together pretty much all that can be said on this topic, ranging from the science, through policy, to practical action”. Dr. Simon N. Stuart, IUCN Species Survival Commission, UK. "This important and timely volume addresses two of the most serious problems affecting biodiversity conservation today: assessing the extent to which protected areas are impacted by biological invasions and the complex problems of managing these impacts. Written by leading specialists, it provides a comprehensive overview of the issues and gives detailed examples drawn from protected areas across the world". Professor Vernon H. Heywood, School of Biological Sciences, University of Reading, UK

Global Change Clonal Growth And Biological Invasions By Plants

Global Change  Clonal Growth  and Biological Invasions by Plants PDF
Author: Fei-Hai Yu
Publisher: Frontiers Media SA
ISBN: 2889450465
Size: 46.93 MB
Format: PDF, ePub, Mobi
Category :
Languages : en
Pages :
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There are few more active frontiers in plant science than helping understand and predict the ecological consequences of on-going, global changes in climate, land use and cover, nutrient cycling, and acidity. This collection of research papers and reviews focuses on how these changes are likely to interact with two important factors, clonal growth in plants and the introduction of species into new regions by humans, to reshape the ecology of our world. Clonal growth is vegetative reproduction in which offspring remain attached to the parent at least until establishment. Clonal growth is associated with the invasiveness of introduced species, their tendency to spread after introduction and negatively affect other species. Will changes in climate, land cover, or nutrients further increase biological invasions by introduced, clonal plants? The articles in this book seek to address this question with new research and theory on clonal growth and its interactions with invasiveness and other components of global change.

Medieval Invasions In Modern Irish Literature

Medieval Invasions in Modern Irish Literature PDF
Author: J. Ulin
Publisher: Springer
ISBN: 1137297506
Size: 62.89 MB
Format: PDF, ePub
Category : Literary Criticism
Languages : en
Pages : 198
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Medieval Invasions in Modern Irish Literature offers the first book-length treatment of the literary return to and reinterpretation of Giraldus Cambrensis's twelfth century The History of the Conquest of Ireland. Writers studied include W.B. Yeats, Lady Gregory, James Joyce, Sean O'Faoláin, Micheál Mac Liammóir, Brendan Behan and Jamie O'Neill.

Early Strategies Of Invasive Seaweeds

Early Strategies of Invasive Seaweeds PDF
Author: Christine Ramsay-Newton
Publisher:
ISBN:
Size: 25.26 MB
Format: PDF, Kindle
Category : Aquatic weeds
Languages : en
Pages : 74
View: 1091

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Invasion biology has become a primary focus of research on global change due to the enormous ecological and economic impacts that these species can have on recipient communities. Ecologically, invasive species have been responsible for altering community structure, reducing native biodiversity, and disrupting ecosystem functioning. The economic impacts of invasive species can include altering fisheries and aquaculture, as well as decreases in recreation and tourism. However, as many invaders go unnoticed or unidentified, particularly in marine communities, much of the invasion biology research has been conducted on well-established invaders. Therefore, little is known about early invasion dynamics on invader characteristics and recipient communities. The recent invasion of the red alga, Dasysiphonia (formerly, "Heterosiphonia") japonica to the western North Atlantic Ocean provides us with a unique opportunity to study the early invasion dynamics of a marine macrophyte invader. Native to the Indo-Pacific region, Dasysiphonia was first reported as an invader in the eastern Atlantic Ocean in the 1980's, before invading the western Atlantic Ocean in 2009 in Rhode Island (although molecular data suggest it was present as early as 2007 in Rhode Island waters). Based on temperature and salinity tolerances of the genetically identical European populations, Dasysiphonia has the potential to alter native biodiversity and ecosystem functioning in subtidal communities from Nova Scotia, Canada through Florida, USA. We used this recent invasion to examine the early invasion dynamics of Dasysiphonia on recipient communities in the western Atlantic Ocean. Specifically, this research sought to: (1) report the currently invaded range of Dasysiphonia in the western Atlantic Ocean, (2) assess the impacts on native community structure and biodiversity from Dasysiphonia, (3) investigate the abiotic and biotic factors contributing to invasion success of Dasysiphonia, and (4) determine the impacts from the invader on critical nearshore ecosystem processes. We conducted subtidal community surveys at 19 sites in 2012 between Maine, USA and New York, USA to ascertain the current invaded range of Dasysiphonia in the western North Atlantic. Dasysiphonia was found at nearly all sites from Cape Elizabeth, Maine through Long Island Sound (New York). Abundances of Dasysiphonia averaged approximately 14% of the benthic community, however, we observed abundances of up to 80% were seen at multiple locations. In addition, we found community structure differed significantly between the northern and southern regions, which are separated by a well-known biogeographic barrier at Cape Cod, Massachusetts. Important changes at the community and individual species level may occur immediately following an initial invasion as the invader is incorporated into the recipient community. We continued tracking abundances of Dasysiphonia and recipient community responses during the first four years of the invasion in the northern region, as well as explored the impacts this marine invader had on ecosystem functioning in the recipient community. At the community level, biodiversity of native macrophytes decreased to nearly half of pre-invasion levels and community composition shifted within only four years after the initial invasion of Dasysiphonia. Additionally, Dasysiphonia abundances decreased following the initial invasion. On an individual species level, we found evidence of plasticity in the invader with respect to nutrient uptake efficiency. Despite these changes in structure at both the community and individual species level, communities are able to successful respond to species invasion by altering the functional mechanisms underlying the relationship between biodiversity and ecosystem functioning. Experiments during the initial invasion in 2011 showed non-invaded communities were more successful at nutrient uptake, however, as Dasysiphonia was incorporated into the community, changes at both the community and initial species level by 2013 allowed invaded communities to increase their overall nutrient uptake efficiencies and surpass those of non-invaded community assemblages. The impacts and community responses to invasions are context dependent, as we were able to show for Dasysiphonia. During the first four years of invasion, abundances of Dasysiphonia were consistently higher (>200%) in the northern biogeographic providence (north of the biogeographical barrier, Cape Cod, MA), when compared to our surveys in the southern region, suggesting differences in biotic and abiotc conditions may have contributed to the success of Dasysiphonia within each region. Indeed, through controlled mesocosm experiments in each region, we found northern populations of Dasysiphonia grew 10 times faster than populations south of the biogeographical barrier. Preliminary evidence also suggested that consumption of Dasysiphonia by the native herbivore, Lacuna vincta, may be higher in the south, leading to the lower abundances of the invader we found in our subtidal surveys. This differential invasion strategy between biogeographic regions may have contributed to important community level responses as we found a strong negative correlation between Dasysiphonia abundance and native diversity in the northern biogeographic providence, however, through in situ manipulative experiments, we showed Dasysiphonia did not impact diversity in the southern region. Our work highlights the importance of recognizing and identifying invasive species early in their invasion process, as important community and individual species level changes can occur within only 5 years following the initial invasion, including reductions in biodiversity and alterations of important ecosystem functions. However, the success and impacts of these invaders are context dependent and can vary with differences in biotic and abiotic conditions of the recipient community. Therefore the need to assess invader traits and community impacts across the entire invaded range is paramount, particularly if this range encompasses major differences in conditions, as in the invasion of Dasysiphonia to the western Atlantic Ocean.

Biological Invasions

Biological Invasions PDF
Author: M. Williamson
Publisher: Springer Science & Business Media
ISBN: 0412591901
Size: 16.89 MB
Format: PDF, Mobi
Category : Science
Languages : en
Pages : 244
View: 5609

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Some biological invasions have marked ecological and economic effects. But most fail, and most of those that succeed have small effects. This volume should be of interest to plant ecologists, plant conservationists, population biologists, agriculturalists

Plant Invasions

Plant Invasions PDF
Author: Anna Traveset
Publisher: CABI
ISBN: 1789242177
Size: 10.97 MB
Format: PDF, ePub, Docs
Category : Science
Languages : en
Pages : 479
View: 1439

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There are many books on aspects of plant invasions, but none that focus on the key role of species interactions in mediating invasions. This book reviews exciting new findings and explores how new methods and tools are shedding new light on crucial processes in plant invasions. This book will be of interest to academics and students of ecology, researchers engaged in developing management solutions, scientific managers of natural ecosystems, and policy-makers.

Bioenergy And Biological Invasions

Bioenergy and Biological Invasions PDF
Author: Lauren D Quinn
Publisher: CABI
ISBN: 1780643306
Size: 19.79 MB
Format: PDF, Kindle
Category : Technology & Engineering
Languages : en
Pages : 175
View: 469

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Despite major international investment in biofuels, the invasive risks associated with these crops are still unknown. A cohesive state-of-the-art review of the invasive potential of bioenergy crops, this book covers the identified risks of invasion, distributions of key crops and policy and management issues. Including a section on developing predictive models, this book also assesses the potential societal impact of bioenergy crops and how to mitigate invasive risks.

Biological Invasions In Marine Ecosystems

Biological Invasions in Marine Ecosystems PDF
Author: Gil Rilov
Publisher: Springer Science & Business Media
ISBN: 354079235X
Size: 17.31 MB
Format: PDF
Category : Science
Languages : en
Pages : 641
View: 968

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Biological invasions are considered to be one of the greatest threats to the integrity of most ecosystems on earth. This volume explores the current state of marine bioinvasions, which have been growing at an exponential rate over recent decades. Focusing on the ecological aspects of biological invasions, it elucidates the different stages of an invasion process, starting with uptake and transport, through inoculation, establishment and finally integration into new ecosystems. Basic ecological concepts - all in the context of bioinvasions - are covered, such as propagule pressure, species interactions, phenotypic plasticity, and the importance of biodiversity. The authors approach bioinvasions as hazards to the integrity of natural communities, but also as a tool for better understanding fundamental ecological processes. Important aspects of managing marine bioinvasions are also discussed, as are many informative case studies from around the world.