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tree. When the tree canopy cover increases to 15 to 35 <br />percent, the same plants are present, however, the amounts <br />of grasses and shrubs have decreased. Utah juniper trees <br />have increased and are larger in size. <br />As tree canopy cover increases to greater than 35 percent, <br />the trees become dominant, and are larger in size. The tree <br />size and density is directly correlated to precipitation. <br />There is almost no understory production at all. A few <br />invader species such as mustards, - Russian thistle, and -- -- <br />kochia become established on the site at this level of tree <br />canopy cover. <br />Percent Cover: <br />Ground cover and structure: <br />tree- canopy 0-15% <br />Canopy cover Average o Easal <br />vertical view height' (57.) area cover <br />Grasses, Grasslikes 15 __0 10 <br />F o rhs_ 1 .5 1 <br />S hrUhs 2 3.5 1 <br />Tfeas_ 10 5_0 <1 <br />tree canopy 15 — 350 . Canopy cover Average. Pase <br />vertical view height (ft) area cover <br />Grasses, Grasslikes 8 1.0 <br />Forbs 1 - 5 <br />Shrubs _ 2.0 <br />Trees 20 8.0 <br />tree canopy 35 +% <br />Shallow & Sandy Loam PJ #112 Page 3 of 10 <br />5 <br />Canopy cover Average o Easel <br />vertical view height (ft) area cover <br />Grasses, Grasslikes 1 1.0 1 <br />Forbs 1 .5 1 <br />Shrubs 1 1.5 1 <br />Trees 40 12.0 5 <br />c. Vascular plant community composition and production (by air - <br />dry weight): <br />1. Herbaceous <br />a. Grasses and grasslike <br />