<p>Species scores (upper left), variation between years (upper right), habitats (bottom left) and plots (bottom right). Ellipses describe the variability within habitats and plots and have an approximate 67% confidence level. Habitat and species codes are given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0050335#pone-0050335-t001" target="_blank">Tables 1</a> and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0050335#pone-0050335-t002" target="_blank">2</a>, respectively.</p
