Research Library

Premium Evidence for rapid evolution of phenology in an invasive grass
Novy A.,
Flory S.L.,
Hartman J. M.
Publication year2013
Publication title
journal of evolutionary biology
Resource typeJournals
Abstract Evolutionary dynamics of integrative traits such as phenology are predicted to be critically important to range expansion and invasion success, yet there are few empirical examples of such phenomena. In this study, we used multiple common gardens to examine the evolutionary significance of latitudinal variation in phenology of a widespread invasive species, the Asian short‐day flowering annual grass M icrostegium vimineum . In environmentally controlled growth chambers, we grew plants from seeds collected from multiple latitudes across the species' invasive range. Flowering time and biomass were both strongly correlated with the latitude of population origin such that populations collected from more northern latitudes flowered significantly earlier and at lower biomass than populations from southern locations. We suggest that this pattern may be the result of rapid adaptive evolution of phenology over a period of less than one hundred years and that such changes have likely promoted the northward range expansion of this species. We note that possible barriers to gene flow, including bottlenecks and inbreeding, have apparently not forestalled evolutionary processes for this plant. Furthermore, we hypothesize that evolution of phenology may be a widespread and potentially essential process during range expansion for many invasive plant species.
Subject(s)biology , biomass (ecology) , composite material , demography , ecology , geodesy , geography , invasive species , latitude , materials science , phenology , population , range (aeronautics) , sociology
SCImago Journal Rank1.289

Seeing content that should not be on Zendy? Contact us.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here