10.07.2015 Views

Invasiveness Ranking System for Non-Native Plants of Alaska

Invasiveness Ranking System for Non-Native Plants of Alaska

Invasiveness Ranking System for Non-Native Plants of Alaska

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Figure 3. Mean scores <strong>of</strong> species relative to Polygonum cuspidatum <strong>for</strong> five different rankingsystemsMatricaria discoidesCrepis tectorumLinaria vulgarisDescurainia sophiaChenopodium albumLeucanthemum vulgareSorbus aucupariaVicia craccaHieracium aurantiacumMelilotus albaBromus tectorum1.61.41.210.80.60.40.20Polygonum cuspidatum-0.2A meanS meanV meanC meanAK mean(A = Australia AQIS Weed Risk Assessment <strong>System</strong>, S = Southwest Exotic Species <strong>Ranking</strong> <strong>System</strong>, V = Invasive Exotic Plant Species in Virginia,C = Cali<strong>for</strong>nia Exotic Pest Plant Council, AK = <strong>Alaska</strong> <strong>Invasiveness</strong> <strong>Ranking</strong> <strong>System</strong>). Species were ranked independently by two to five assessors.Standard errors are also included.8

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!