Journal ArticleDOI
Hybridization as a stimulus for the evolution of invasiveness in plants
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TLDR
This model does not represent the only evolutionary pathway to invasiveness, but is clearly an underappreciated mechanism worthy of more consideration in explaining the evolution ofinvasiveness in plants.Abstract:
Invasive species are of great interest to evolutionary biologists and ecologists because they represent historical examples of dramatic evolutionary and ecological change. Likewise, they are increasingly important economically and environmentally as pests. Obtaining generalizations about the tiny fraction of immigrant taxa that become successful invaders has been frustrated by two enigmatic phenomena. Many of those species that become successful only do so (i) after an unusually long lag time after initial arrival, and/or (ii) after multiple introductions. We propose an evolutionary mechanism that may account for these observations. Hybridization between species or between disparate source populations may serve as a stimulus for the evolution of invasiveness. We present and review a remarkable number of cases in which hybridization preceded the emergence of successful invasive populations. Progeny with a history of hybridization may enjoy one or more potential genetic benefits relative to their progenitors. The observed lag times and multiple introductions that seem a prerequisite for certain species to evolve invasiveness may be a correlate of the time necessary for previously isolated populations to come into contact and for hybridization to occur. Our examples demonstrate that invasiveness can evolve. Our model does not represent the only evolutionary pathway to invasiveness, but is clearly an underappreciated mechanism worthy of more consideration in explaining the evolution of invasiveness in plants.read more
Citations
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Journal ArticleDOI
Founding events in species invasions: genetic variation, adaptive evolution, and the role of multiple introductions
TL;DR: It is concluded that management limiting gene flow among introduced populations may reduce adaptive potential but is unlikely to prevent expansion or the evolution of novel invasive behaviour.
Journal ArticleDOI
The Ecology of Invasions by Animals and Plants
Arnold B. Erickson,Charles Elton +1 more
TL;DR: Elton's "The Ecology of Invasions by Animals and Plants" as mentioned in this paper is one of the most cited books on invasion biology, and it provides an accessible, engaging introduction to the most important environmental crises of our time.
Journal ArticleDOI
Alien plants in checklists and floras: towards better communication between taxonomists and ecologists
Petr Pyšek,David M. Richardson,Marcel Rejmánek,Grady L. Webster,Mark Williamson,Jan Kirschner +5 more
TL;DR: Recommendations are outlined on how to deal with the issue of plant invasions in standard floras with the aim of contributing to a better understanding between taxonomists and ecologists and allowing more detailed comparative analyses of alien floras of various regions of the world.
Journal ArticleDOI
Ecological and evolutionary consequences of biotic homogenization.
TL;DR: The goal is to initiate future research that investigates the broader conservation implications of homogenization and to promote a proactive style of adaptive management that engages the human component of the anthropogenic blender that is currently mixing the biota on Earth.
Journal ArticleDOI
Jack of all trades, master of some? On the role of phenotypic plasticity in plant invasions
TL;DR: What is required to assess phenotypic plasticity at different levels is described and a new framework can be applied when testing both ecological or evolutionary oriented hypotheses, and therefore promises to bridge the gap between the two perspectives.
References
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Journal ArticleDOI
Demographic consequences of inbreeding in remnant populations
L. S Mills,P. E Smousse +1 more
TL;DR: Counter to the current fashion, which downplays the importance of inbreeding in stochastic environments, it is concluded that, while inbreeding depression is not necessarily the primary cause of extinction, it can be critical.
Journal ArticleDOI
Deliberate Introductions of Species: Research Needs Benefits can be reaped, but risks are high
John J. Ewel,Dennis J. O'Dowd,Joy Bergelson,Curtis C. Daehler,Carla M. D'Antonio,Luis Diego Gómez,Doria R. Gordon,Richard J. Hobbs,Alan Holt,Keith R. Hopper,Colin E. Hughes,Marcy LaHart,Roger R. B. Leakey,William G. Lee,Lloyd L. Loope,David H. Lorence,Svata M. Louda,Ariel E. Lugo,Peter B. McEvoy,David M. Richardson,Peter M. Vitousek +20 more
TL;DR: The silent invasion of Hawaii by insects, disease organisms, snakes, weeds and other pests is the single greatest threat to Hawaii’s economy and natural environment.
Book
Genetics of Flowering Plants
TL;DR: Genetics of flowering plants, Genetics of flowering Plants, مرکز فناوری اطلاعات و اصاع رسانی, کوشا�رزی شاوρزات, £1,000,000 (US$2,000; €3,000)
Book ChapterDOI
Life History of Colonizing Plants: Some Demographic, Genetic, and Physiological Features
TL;DR: The term “colonizer” has come to mean different things to different biologists, but in a general sense all species are colonizers, as they all must become established in sites in which to grow and reproduce.
Journal ArticleDOI
Persistent nuclear ribosomal DNA sequence polymorphism in the Amelanchier agamic complex (Rosaceae).
Christopher S. Campbell,Martin F. Wojciechowski,Bruce G. Baldwin,Lawrence A. Alice,Michael J. Donoghue +4 more
TL;DR: Individual plants of several Amelanchier taxa contain many polymorphic nucleotide sites in the internal transcribed spacers of nuclear ribosomal DNA (nrDNA), which is unusual because it is not recent in origin and thus has resisted homogenization by concerted evolution.