Ecological Archives E086-002-A1

Andrew S. MacDougall and Roy Turkington. 2005. Are invasive species the drivers or passengers of change in degraded ecosystems? Ecology 86:42–55.

Appendix A. List of species monitored for the four years of this experiment. "increased" or "decreased or no change" indicate the responses in percent cover between pre-treatment (2000) and three years after treatment applications (2003) at one or both sites (i.e., some species only occur at one site), as determined by t tests ( = 0.05, df = 79 [control plots not included]).

Species

Origin

Life history

Growth form

 
 
 
 

Increased

 
 
 

Allium acuminatum Hook.

native

perennial

forb

Anthoxanthum odoratum L.

exotic

perennial

grass

Bromus hordeaceus L. ssp. thominii

exotic

annual

grass

Bromus sterilis L.

exotic

annual

grass

Camassia leichtlinii (Baker) S. Wats. ssp. suksdorfi

native

perennial

forb

Camassia quamash (Pursh) Greene

native

perennial

forb

Cardamine nuttallii Greene

native

perennial

forb

Cardamine oligosperma Nutt. var. oligosperma

native

annual

forb

Cerastium glomeratum Thuill.

exotic

annual

forb

Circium arvense (L.) Scop. var. horridum

exotic

perennial

forb

Circium vulgare (Savi) Tenore

exotic

perennial

forb

Claytonia perfoliata Donn ex Willd.

native

annual

forb

Collinsia parviflora Dougl. ex Lindl.

native

annual

forb

Cytisus scoparius (L.) Link

exotic

perennial

tree/shrub

Dodecatheon hendersonii A. Gray spp. hendersonii

native

perennial

forb

Erythronium oregonum Appleg. ssp. oregonum

native

perennial

forb

Fritillaria affinis (Schult.) Sealy var. affinis

native

perennial

forb

Geranium molle L.

exotic

annual

forb

Hypochaeris radicata L.

exotic

perennial

forb

Lapsana communis L.

exotic

annual

forb

Lathyrus sphaericus Retz.

exotic

annual

forb

Lithophragma parviflorum var. parviflorum

native

perennial

forb

Lomatium utriculatum (Nutt. ex T. & G.) Coult. & Rose

native

perennial

forb

Lotus micranthus Benth.

native

annual

forb

Lupinus polycarpus Greene

native

annual

forb

Melica subulata (Griseb.) Scribn.

native

perennial

grass

Montia linearis (Dougl. ex Hook.) Greene

native

annual

forb

Myosotis discolor Pers.

exotic

annual

forb

Nemophila parviflora Dougl. ex Benth. var. parviflora

native

annual

forb

Perideridia gairdneri (H. & A.) Mathias

native

perennial

forb

Piperia elegans (Lindl.) Rydb.

native

perennial

forb

Ranunculus occidentalis Nutt. var. occidentalis

native

perennial

forb

Sanicula crassicaulis Poepp. ex DC. var. crassicaulis (default)

native

perennial

forb

Sherardia arvensis L.

exotic

annual

forb

Symphoricarpos albus (L.) Blake

native

perennial

tree/shrub

Taraxacum officinale G.H. Weber ex Wiggers

exotic

perennial

forb

Trifolium dubium Sibth.

exotic

annual

forb

Triteleia hycinthina (Lindl.) Greene

native

perennial

forb

Valerianella locusta (L.) Latt.

exotic

annual

forb

Veronica arvensis L. (default)

exotic

annual

forb

Viola praemorsa Dougl ex Lindl. ssp. praemorsa

native

perennial

forb

Vulpia bromoides (L.) S.F. Gray

exotic

annual

grass

 
 
 
 

Decreased or No Change

 
 
 

Acer macrophyllum Pursh

native

perennial

tree/shrub

Achillea millefolium L.

native

perennial

forb

Agrostis gigantea Roth

exotic

perennial

grass

Alopecurus pratensis L.

exotic

perennial

grass

Brodiaea coronaria (Salisb.) Engl.

native

perennial

forb

Bromus carinatus Hook. & Arn.

native

perennial

grass

Carex inops Bailey

native

perennial

grass

Cerastium arvense L.

native

perennial

forb

Cerastium fontanum Baumg. ssp trivale

exotic

perennial

forb

Crataegus monogyna Jacq.

exotic

perennial

tree/shrub

Danthonia californica Boland.

native

perennial

grass

Daphne laureola L.

exotic

perennial

tree/shrub

Delphinium menziesii DC. ssp. menziesii

native

perennial

forb

Dianthus deltoides L.

exotic

perennial

forb

Elymus glaucus Buckl.

native

perennial

grass

Festuca idahoensis Elmer spp. roemeri

native

perennial

grass

Galium aparine L.

exotic

annual

forb

Lactuca muralis (L.) Fresn.

exotic

annual

forb

Lathyrus nevadensis S. Wats. var. pilosellus

native

perennial

forb

Mahonia aquifolium (Pursh) Nutt.

native

perennial

shrub

Oemleria cerasiformis (Hook. & Arn.) J.W. Landon

native

perennial

shrub

Osmorhiza berteroi DC.

native

perennial

forb

Plantago lanceolata L.

exotic

perennial

forb

Psuedotsuga menziesii (Mirb.) Franco

exotic

perennial

tree

Quercus garryana Dougl.

native

perennial

tree

Rumex acetosella L.

exotic

perennial

forb

Saxifraga integrifolia Hook.

native

perennial

forb

Stellaria media (L.) Vill.

exotic

annual

forb

Trifolium repens L.

exotic

perennial

forb

Vicia americana Muhl. ex Willd.

native

perennial

forb

Vicia hirsuta (L.) S.F. Gray

exotic

annual

forb

Vicia sativa L.

exotic

perennial

forb

Viola odorata L.

exotic

perennial

forb



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