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| Distribution, Abundance and Ecology of Introduced Plants in the Sierra Nevada National Parks: Baseline Data for Management | ||
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Preliminary Results
Twenty-six (12 %) of the nonnative species in Yosemite, Sequoia and Kings Canyon National Parks are included on the list of most invasive and damaging exotic pest plants of greatest ecological concern in California (California Exotic Pest Plant Council, 1996). These include giant reed (Arundo donax), cheatgrass (Bromus tectorum), yellow starthistle (Centaurea solstitialis), bitter fennel (Foeniculum vulgare), French broom (Genista monspessulana), tumble mustard (Sisymbrium altissimum) and Himalayan blackberry (Rubus discolor). Another five are listed as wildland plants of lesser invasiveness: tree of heaven (Ailanthus altissima), Italian thistle (Carduus pycnocephalus), tocalote (Centaurea melitensis), bull thistle (Cirsium vulgare), English ivy (Hedera helix), Spanish broom (Spartium junceum), mullein (Verbascum thapsus) and periwinkle (Vinca major). | |
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Related Reference | ||
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