Table 2 Area cover of invasive species in West Chatham Island
Invasive species | Family | Area (ha)* | Percent cover | Distribution | |
|---|---|---|---|---|---|
Himalayan blackberry | Rubus armeniacus Focke | Rosaceae | 14.3 | 85.2 | Throughout |
Agronomic grasses: | |||||
cheat grass, | Bromus tectorum L. | Poaceae | 1.9 | 11.4 | Throughout |
velvet grass, | Holcus lanatus L. | ||||
sweet vernal grass | Anthoxanthum odoratum L. | ||||
Scotch broom | Cytisus scoparius (L.) Link | Fabaceae | 0.36 | 2.2 | Eastern bluffs |
English ivy | Hedera helix L. | Araliaceae | 0.14 | 0.8 | Throughout |
Canada thistle | Cirsium arvense (L.) Scop. | Asteraceae | 0.06 | 0.4 | Southern bluffs |
Daphne | Daphne laureola L. | Thymelaeaceae | n/a | - | Centre and north |
English holly | Ilex aquifolium L. | Aquifoliaceae | n/a | - | Northern woodland |
Himalayan cotoneaster | Cotoneaster simonsii Bak. | Rosaceae | n/a | - | Northern woodland |
Common hawthorn | Craetegus monogyna Jacq. | Aquifoliaceae | n/a | - | Centre and north |
Hairy cat’s ear | Hypochaeris radicata L. | Asteraceae | n/a | - | Southern bluff |
Evergreen blackberry | Rubus laciniatus Willd. | Rosaceae | n/a | - | Northern bluff |
Total invasive species | 16.8 | 100 | West Chatham Is. | ||