Spotted knapweed abundance and species richness in restored and unrestored ecosystems

Abstract

Spotted knapweed (Centaurea maculosa or Centaurea stoebe), is an invasive perennial that is becoming widespread across Northern Michigan. A highly successful competitor in open habitats, spotted knapweed is quickly dominating abandoned farm fields in Northern Michigan. This study examines spotted knapweed abundance and species richness, comparing these factors on restored and unrestored land belonging to the Little Traverse Conservancy. No significant difference was found between species richness or spotted knapweed abundance at restored versus unrestored sites. A slight positive correlation between species richness and spotted knapweed abundance was found, though the sample size of this study was insufficient for drawing reliable conclusions. Further research into the relationship between spotted knapweed abundance and species richness, as well as the effectiveness of different management techniques should be considered.UM