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Unearthing the impact of human disturbance on a notorious weed
Author(s) -
Hodgins Kathryn
Publication year - 2014
Publication title -
molecular ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.619
H-Index - 225
eISSN - 1365-294X
pISSN - 0962-1083
DOI - 10.1111/mec.12717
Subject(s) - biology , ambrosia artemisiifolia , ragweed , weed , range (aeronautics) , ecology , biodiversity , herbarium , population , invasive species , disturbance (geology) , demography , immunology , composite material , allergy , paleontology , materials science , sociology
Large‐scale anthropogenic changes in the environment are reshaping global biodiversity and the evolutionary trajectory of many species. Evolutionary mechanisms that allow organisms to thrive in this rapidly changing environment are just beginning to be investigated (Hoffmann & Sgrò [Hoffmann A, 2011]; Colautti & Barrett [Colautti RI, 2013]). Weedy and invasive species represent ‘success stories’ for how species can cope with human modified environments. As introduced species have spread within recent times, they provide the unique opportunity to track the genetic consequences of rapid range expansion through time and space using historic DNA samples. Using modern collections and herbarium specimens dating back to 1873, Martin et al . ([Martin M, 2014]) have provided a more complete understanding of the population history of the invasive, agricultural weed, common ragweed ( Ambrosia artemisiifolia ; Fig. [Figure 1. Male inflorescences of common ragweed. Photo credit: Will Kirk, ...]) in its native range with surprising results. They find that the recent population explosion of common ragweed in North America coincided with substantial shifts in population genetic structure with implications for invasion.