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Promoted ContentHumanities & Social SciencesJune 2016
Reasserting America in the 1970s
by Hallvard Notaker, Giles Scott-Smith, David J. Snyder
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Promoted Content
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Drachenwinter
The First Empire. Roman
by Sullivan, Michael J.
Aus dem amerikanischen Englisch von Carina Schnell
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Trusted PartnerMarch 1970
Zum Problem des internationalen Gleichgewichts in einem linearen Außenhandelsmodell.
Ein Beitrag zur Theorie der sozialistischen Volkswirtschaft.
by Walter, Franz J.
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Trusted PartnerHumanities & Social SciencesApril 2020
The US public diplomacy in socialist Yugoslavia, 1950-70
by Carla Konta, Giles Scott-Smith, J. Simon Rofe
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Trusted PartnerInsecticide & herbicide technologyDecember 2000
Evaluating Indirect Ecological Effects of Biological Control
by Edited by Eric Wajnberg, John K Scott, Paul C Quimby
A major concern for biological control has always been the risk of indirect unwanted effects on the ecology of other organisms. Our understanding of the ecological and evolutionary processes underlying these effects has until now been limited and experimental methods sometimes lacking. This book presents the key papers from of the first International Organisation for Biological Control global symposium, held in Montpellier, France, in October 1999. It addresses the issues and concerns involved in biological control, and assesses the current status of evaluation of the ecological effects.
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Trusted PartnerForestry & silviculture: practice & techniquesDecember 2000
Forests and Landscapes
Linking Ecology, Sustainability and Aesthetics
by Edited by Eric Wajnberg, John K Scott, Paul C Quimby
Forests are an important component in the visual appeal of landscapes. There is an increasing recognition of the importance of this subject among foresters and environmental scientists. Increasingly, forest resource managers must consider both the aesthetic consequences of timber harvesting operations and management plans and public perceptions of the sustainability of forest eco-system management.Written by world class authorities this book is the first to address this subject area. It consists of 17 chapters and is divided into six parts. The interdisciplinary nature of the book brings together not only foresters and ecologists, but also landscape architects, psychologists and philosophers. Contributors are leading research workers in their subjects, from Canada, the USA and UK.
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Trusted PartnerInsecticide & herbicide technologyAugust 2007
Biological Control
A Global Perspective
by Charles Vincent, Mark S. Goettel, George Lazarovits, Michael J. Wilson
Biological control, the management of pests by the use of living organisms, has a long history of application to agriculture around the world. However, the effective use of beneficial organisms is constrained by environmental, legal, and economic restrictions, forcing researchers to adopt increasingly multi-disciplinary techniques in order to deploy successful biological control programs. It is this complex process, including the mindset and the social environment of the researcher as well as the science being pursued, that this book seeks to capture. Chapters reveal the experiences of scientists from the initial search for suitable control agents, to their release into ecosystems and finally to the beneficial outcomes which demonstrate the great success of biological control across diverse agro-ecosystems. Drawing together historical perspectives and approaches used in the development of biological control as well as outlining current debates surrounding terminology and differential techniques, Biological Control: A Global Perspective will be a valuable resource.
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Trusted PartnerInternational relationsJanuary 2016
Reasserting America in the 1970s
by Edited by Hallvard Notaker, Giles Scott-Smith and David J. Snyder
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Trusted PartnerPest controlOctober 2008
Root Feeders
An Ecosystem Perspective
by Edited by Scott N Johnson, Phillip J Murray.
Interactions between plants and herbivores can have a significant effect on plant growth and development, and ultimately, on a plant's economic value. Research has traditionally focused on aboveground herbivores, despite the considerable role that belowground herbivory by both vertebrates and invertebrates can play within a range of ecosystem processes. Root feeders have been classified as agricultural pests but can also be used as biological control agents against invasive species and can affect community dynamics of plants, soil micro-organisms and populations of aboveground organisms. Bringing together a broad range of viewpoints and approaches, Root Feeders presents a comprehensive review of knowledge on root herbivores and illustrates their importance within ecosystems. Chapters discuss problems of visualizing the organisms in the soil, their role in agriculture, grassland and forest ecosystems, and present specific case studies on the management, control and influence of root feeders. Covering all aspects from food web ecology to the effects of climate change, this will be valuable reading for researchers and professionals in agricultural entomology, plant science, ecology and soil science.
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Trusted PartnerJuly 2006
Auf Schatzsuche
Ein Abenteuer mit Ferdi und seinen Freunden. Das Arbeitsheft für Kinder zum "Verhaltenstraining für Schulanfänger"
by Petermann, Franz; Natzke, Heike; Gerken, Nicole; Walter, Hans J
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