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      Ecology of forest insect invasions

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      Biological Invasions
      Springer Science and Business Media LLC

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          The Ecology of Invasions by Animals and Plants

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            A proposed unified framework for biological invasions.

            There has been a dramatic growth in research on biological invasions over the past 20 years, but a mature understanding of the field has been hampered because invasion biologists concerned with different taxa and different environments have largely adopted different model frameworks for the invasion process, resulting in a confusing range of concepts, terms and definitions. In this review, we propose a unified framework for biological invasions that reconciles and integrates the key features of the most commonly used invasion frameworks into a single conceptual model that can be applied to all human-mediated invasions. The unified framework combines previous stage-based and barrier models, and provides a terminology and categorisation for populations at different points in the invasion process. Copyright © 2011 Elsevier Ltd. All rights reserved.
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              The role of propagule pressure in explaining species invasions.

              Human-mediated species invasions are a significant component of current global environmental change. There is every indication that the rate at which locations are accumulating non-native species is accelerating as free trade and globalization advance. Thus, the need to incorporate predictive models in the assessment of invasion risk has become acute. However, finding elements of the invasion process that provide consistent explanatory power has proved elusive. Here, we propose propagule pressure as a key element to understanding why some introduced populations fail to establish whereas others succeed. In the process, we illustrate how the study of propagule pressure can provide an opportunity to tie together disparate research agendas within invasion ecology.
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                Author and article information

                Journal
                Biological Invasions
                Biol Invasions
                Springer Science and Business Media LLC
                1387-3547
                1573-1464
                November 2017
                July 20 2017
                November 2017
                : 19
                : 11
                : 3141-3159
                Article
                10.1007/s10530-017-1514-1
                8d04831e-d1a9-4182-8034-481067cf2fd9
                © 2017

                http://www.springer.com/tdm

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