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have been, or soon will be filled by young, fast - growing tree species including quaking aspen <br />and cottonwood. The shrub layer is very thick and similar in composition to AC -U -2, with <br />European and glossy buckthorn common. Likewise, the ground layer is sparse with species <br />common in disturbed woodlands prevalent. Overall, this forest has great potential to improve if <br />actively managed to reduce nonnative shrub levels and reintroduce appropriate processes and <br />species. It represents the best opportunity to manage an upland natural community in Acorn <br />Park. <br />Community <br />Activity <br />Priority <br />Estimated Cost <br />Comments <br />AC -3 <br />Cut Buckthorn <br />High <br />Approximately <br />Cut and treat all stumps with 25 -50% <br />and other <br />$3,000 -8,000 or <br />solution of Roundup or Garlon. Stack <br />nonnative shrubs <br />150 -300 <br />brush away from oak crowns and burn <br />volunteer hours <br />in winter. Cut before burning in any <br />particular area. Re -plant with native <br />seed /plants where bare soil exists. <br />AC -U3 <br />Reintroduce <br />High <br />$500 — 500+ <br />Reintroduce appropriate native grasses <br />appropriate <br />depending on <br />and flowers through planting of plugs <br />native species <br />number of <br />or seed, particularly where bare ground <br />species, plants, <br />is left from brush clearing. Along with <br />seed. <br />burning, this will be an important step <br />in long -term control of buckthorn and <br />nonnative shrubs. <br />AC -U3 <br />Apply <br />Medium -high <br />$1,000 - 200 <br />Burning will help keep nonnative <br />Prescribed Fire <br />per event <br />shrubs in -check and allow desirable <br />native graminoids and forbs to better <br />establish. Use trails for burn breaks <br />and create burn breaks constructed by <br />hand in woods. <br />AC -U3 <br />Recut brush <br />Medium <br />$500 -1,000 <br />Brush resprouts should be cut and new <br />every 2 -3 years <br />recruitment of problem shrubs <br />or 20 hours <br />monitored. <br />volunteer time <br />AC -U3 <br />Remove <br />Med -low <br />$1,000 per acre <br />Cut and treat all stumps with 25 -50% <br />Buckthorn and <br />solution of Roundup or Garlon. This <br />other nonnative <br />community receives a lower priority <br />shrubs <br />than other communities due to the fact <br />that it is a planting rather than a <br />remnant natural community. <br />(Table continues) <br />City of Roseville 69 <br />Parks Natural Resource Management <br />