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Bottlebrush <br />squirreltail <br />Elymus elymoides <br />2.0 <br />Toe Jam <br />Creek <br />Indian ricegrass <br />Achnatherurn hymenoides <br />2.0 <br />Rimrock <br />Sheep fescue <br />Festuca ovian <br />0.2 <br />Covar <br />Prairie junegrass <br />Koeleria macrantha <br />0.2 <br />Canby bluegrass <br />Poa canbyi <br />0.2 <br />Canbar <br />Sandberg bluegrass <br />Poa sandbergii <br />0.2 <br />Alkali sacaton <br />Sporobolus airoides <br />0.1 <br />Green needlegrass <br />Nassella viridula <br />0.5 <br />Lodorm <br />White yarrow <br />Achillea rnillefoliurn <br />0.1 <br />Eagle <br />Mountain <br />*Northern <br />sweetvetch <br />Hedysarum boreale <br />1.0 <br />Lewis flax <br />Linum lewisii <br />0.4 <br />*Alternate <br />Finding on the Public Land Health Standard #3 fbr Plant and Animal Communities: <br />Vegetative communities within the lease are generally meeting standards with some areas not <br />meeting standards due to high amounts of annual invasive species as mentioned above. These <br />communities lack adequate diversity of native perennial species and provide limited soil stability <br />and forage value for wildlife and livestock. These areas are generally limited to the ecological <br />sites listed above. <br />INVASIVE, NON - NATIVE SPECIES <br />Affected Environment: <br />In the state of Colorado, noxious weeds are categorized into three lists that outline the required <br />level of management. List A species are designated by the state of Colorado for eradication. List <br />B species are those noxious weed species that have or will have a state noxious weed <br />management plan developed to stop their spread, and List C species are those species which <br />weed management plans will be developed to aid in management for those jurisdictions that <br />choose to require management of List C species. <br />The proposed lease area has no known List A species within the vicinity, but there are several <br />List B and List C species. Bull thistle, Canada thistle, hoary cress, perennial pepperweed, <br />Russian - olive, salt cedar, and Russian knapweed are all List B species present within or <br />immediately adjacent to the proposed lease area. List C species that are present are primarily <br />downy brome and halogeton. These are annual invasive species that in certain areas dominate the <br />vegetative community. These areas are not meeting standards for land health and have crossed a <br />transitional threshold that can't be fixed without intensive management on a large scale that <br />includes herbicide treatments and seeding. <br />DOI- BLM -CO- 110 - 2012 - 0023 -EA 43 <br />