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Curlew National Grassland Monitoring Report

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Curlew National Grassland Monitoring Report Curlew National Grassland Land and Resource Management Plan Monitoring Report The 2002 Curlew National Grassland Plan (Plan) identified goals and objectives for land management over the next decade (pp. 3-1 to 4-11). Goals describe desired conditions for the future and they are typically general without a specific timeframe for achieving them. An objective is a quantifiable statement of progress in meeting goals, and therefore measure progress towards implementing the Plan. The Plan identified objectives for the management of the Curlew National Grassland (Grassland) and established specific time frames to meet each objective (Plan, pp. 5-1 and 5-2). The progress made toward meeting each objective is displayed in Table A of this Monitoring Report (pages 1-12). This evaluation has been made by employees of the Caribou-Targhee National Forest responsible for the management of the Grassland (Forest). These results are used to help design the annual program of work for each resource group. The following table lists the objectives and the actions we have taken towards meeting the objectives in the Plan. Table A: Objectives OBJECTIVE WHEN? RESULTS/EVALUATION GENERAL ECOLOGICAL CONDITIONS Reassess Within The PFC reassessment was completed in 2010. The results of that assessment are summarized in the tables below. vegetation 10 years PFC of (2012) Table 1: Sagebrush Proper Functioning Condition ecosystems Indicators of Properly Functioning 1998 Assessment 2010 vegetation inventory n=87 on the Sagebrush Condition Rated: Rated: Grassland Functioning-at-Risk Functioning-at-Risk and adjacent Structure Balanced range: 10-30 of the area 17 percent of the area Sagebrush canopy crown cover: areas, to with 0-5 sagebrush crown cover. has 0-5 percent 0-5 percent : 32 percent determine if 40 -60 percent of the area with 6- sagebrush crown 6-15 percent: 28 percent resources are 15 percent sagebrush crown cover. 24 percent of >15 percent: 40 percent moving cover. 30-50 percent of the area the area has 6-15 toward DFC’s with >15 percent sagebrush Percent. 40 percent of 71 percent of sagebrush plots had crown cover Bare soil is less than the area has 16-25 bare ground above 20 percent. 20 percent. percent sagebrush crown cover. Cheat grass and thistles were Unknown bare ground present in 39 percent of plots; soil percentage. Cheat grass plots rated moderate resilience and resistance to invasion of annual grasses based on presence of perennial deep rooted grasses. Curlew National Grasslands 2010-2014 Monitoring Report August 31, 2015 Page 1 OBJECTIVE WHEN? RESULTS/EVALUATION Composition Big sagebrush is present on all but Big sagebrush is Big sagebrush is present on 77 0-5 present of the historical present on all but 5-10 percent of sagebrush plots. habitat percent of the historical habitat. Disturbance Fire has a lethal fire regime on an Fire intervals are Fire intervals are outside historical Regimes approximately 20 year return outside historical regime. Intervals are generally interval. Drier sites may have a regime. Intervals are much longer than 20-30 year 20-40 year return interval generally much longer cycles. The area/extent altered or than 20-30 year cycles. disturbed is outside the historical The area/extent range of variability. altered or disturbed is outside the historical range of variation. Patterns Pattern are within the historical Acreage and dispersion Large concentrations of early seral range are within historical vegetation exist in past burn scars. range Approximately 30% of the grassland burned between 2006 and 2007. Mature vegetation still dominates these areas that have not been disturbed in the last 15+ yrs. Table 2: Mountain Brush Proper Functioning Condition Mountain Indicators of Properly Functioning 1998 Assessment 2010 vegetation inventory Brush Condition Rated: n=7 Rated: Functioning Functioning Structure Multiple vegetation layers with Multiple Multiple vegetation layers alternating vertical dominance. vegetation layers present in all plots. and structural Canopy cover- diversity is present 0-10% :28 percent on most sites but >10% : 72 percent older age Young and mature shrub structure. species present in all plots. Composition Balanced shrub/herbaceous understory Balanced Balance of shrub shrub/herbaceous /herbaceous components understory present in all plots. Curlew National Grasslands 2010-2014 Monitoring Report August 31, 2015 Page 2 OBJECTIVE WHEN? RESULTS/EVALUATION components are present Disturbance Insect, disease, and fire intervals within Fire intervals are Fire has disturbed minor Regimes 20-40 years cycles. Fire regime is mixed beyond 40 years portions of this cover type severity return cycle; most and has resulted in mixed shrubs are old severity over most areas aged. burned. However, fire intervals are still outside the historical regime. Intervals are generally much longer than 20-40 year cycles. The area/extent altered or disturbed is outside the historical range of variability Patterns Acreages and dispersion within historical Distribution and Acreage and dispersion is ranges acreage have been within historical ranges and is reduced from similar to what was observed agricultural in 1998. (Curlew Sagebrush practices. Protection Project EA 2011) The most recent fire disturbance on the grassland affected sagebrush cover types the most. WATER QUALITY Proactively Within The Idaho Department of Environmental Quality (IDEQ 2014) had identified the following impaired water bodies on the Grassland address all 5 years. that do not meet the applicable water quality standards for one or more of the beneficial uses. Additional information at: impaired (2007) https://www.deq.idaho.gov/water-quality/surface-water/monitoring-assessment/integrated-report.aspx water bodies subject to funding and Table 3. The Idaho Department of Environmental Quality (IDEQ) has identified the following assessment units as not supporting state beneficial uses: schedules. Assessment Unit (AU) Beneficial Use Comment Name ID16020309BR001_03: Deep Creek tributaries, Supporting primary contact recreation (PCR), but not supporting North Canyon, & Sweeten Pond Outlet cold water aquatic life (CWAL) & salmonid spawning (SS): Curlew National Grasslands 2010-2014 Monitoring Report August 31, 2015 Page 3 OBJECTIVE WHEN? RESULTS/EVALUATION §303(d) listed due to biota/habitat bioassessments, sediment; also impaired by low flow alterations. ID16020309BR001_03a: Deep Creek Not supporting CWAL: §303(d) listed due to sediment. ID16020309BR002_02a: Sheep Creek Not supporting CWAL & secondary contact recreation (SCR): & tributary §303(d) listed due to sediment & fecal coliform; also impaired by habitat alterations. ID16020309BR003_02a: Meadowbrook Creek, Not supporting CWAL & SCR: §303(d) listed due to sediment & Huffman, & tributary Escherichia coli; also impaired by habitat alterations ID16020309BR003_03a: Rock Creek, Not supporting CWAL & SS: 303(d) listed for sediment; also Salyer, & tributaries impaired by habitat alterations ID17040209SK009_02: South Fork Rock Creek Supporting SCR, but not supporting CWAL. Total Maximum Daily & tributaries Load (TMDL) established for total suspended solids (sediment). The Forest Service continues to complete projects targeted at improving water quality across the Grassland. Watershed Improvement Projects: • Deep Creek Gully Stabilization (2012): Stabilized a large gully in the upper Deep Creek Drainage downstream of the Arbon Valley Highway in the East Richards Grazing Unit. Wildlife Habitat Improvement Projects: • Tree Row Exclosures (2011): Reconstructed several fences to maintain 98 acres of tree row livestock grazing exclosures in the Grandine and Hurd areas (14 miles) in partnership with Pheasants Forever, Rocky Mountain Elk Foundation, Chukar Foundation, and Upland Idaho. • Spring Protection & Livestock Grazing Exclosures (2012): The Forest Service installed five livestock grazing exclosures in partnership with the US Fish & Wildlife Service, Pheasants Forever, and the Chukar Foundation. Spring sources were protected in Salyer (Meadowbrook drainage), SW Peterson/Lonigan & NW Peterson/Lonigan (Rock Creek drainage), and East Kurtz (South Fork Rock Creek) Grazing Units. Acres improved: 58 acres • South Fork Rock Creek Exclosure (2014): Constructed a five acre livestock grazing exclosure along the South Fork of Rock Creek in the East Kurtz Grazing Unit. Livestock Grazing Management • East Huffman Riparian Grazing Unit Expansion (2011): The Forest Service partnered with the Curlew Grazing Association to expand the Huffman Riparian Grazing Unit to include an additional 85 acres in the upper Meadowbrook drainage. • West Strong Riparian Fencing (2011/12): A livestock water gap along Rock Creek in the West Strong Grazing Unit was abandoned and replaced with a water trough. The stream side water gap was fenced off and excluded from livestock grazing. The Forest Service partnered with the Curlew Valley Cattlemen’s Association to complete the project. Curlew National Grasslands 2010-2014 Monitoring Report August 31, 2015 Page 4 OBJECTIVE WHEN? RESULTS/EVALUATION • East Strong Water Gap Exclosure (2012): The Forest Service and Curlew Valley Cattlemen’s Association reduced the size of a livestock watering gap along Meadowbrook Creek from 475 feet to 200 feet. • Seeded approximately 8 acres in the Huffman area (upper Meadowbrook drainage) with 200 pounds of seed to provide additional plant cover on raw soil areas and enhance the diversity of native forbs and grasses. • Southwest Peterson-Lonigan Water Gap Removal: The
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