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Botrychium Crenulatum – W.H SPECIES: Scientific [common] Botrychium crenulatum – W.H. Wagner [Crenulate moonwort] Forest: Salmon-Challis Forest Reviewer: Jessica M Dhaemers; Brittni Brown; John Proctor Date of Review: 08/09/2017; 12 February 2018; 25 March 2018 Forest concurrence (or YES recommendation if new) for inclusion of species on list of potential SCC: (Enter Yes or No) FOREST REVIEW RESULTS: 1. The Forest concurs or recommends the species for inclusion on the list of potential SCC: Yes_X__ No___ 2. Rationale for not concurring is based on (check all that apply): Species is not native to the plan area _______ Species is not known to occur in the plan area _______ Species persistence in the plan area is not of substantial concern _______ FOREST REVIEW INFORMATION: 1. Is the Species Native to the Plan Area? Yes_X_ No___ If no, provide explanation and stop assessment. 2. Is the Species Known to Occur within the Planning Area? Yes X _ No___ If no, stop assessment. Table 1. All Known Occurrences, Years, and Frequency within the Planning Area Year Number of Location of Observations (USFS Source of Information Observed Individuals District, Town, River, Road Intersection, HUC etc.) 2011 Minimum 1 Lost River Ranger District Irwin, J. J. 2014. “A Floristic plant; Township 7N, Range 19E, Section Inventory of East-Central Idaho, however 18. Eastern Boulder Mountains: U.S.A.” Master’s thesis, “Population Valley of the North Fork Big Lost University of Wyoming, Laramie. is dominant River, between Slide and Corral throughout Canyons, 16.5 air miles north IDFG Element Occurrence the area.” northeast of Sun Valley. Custer EO Number: 6 County. EO_ID: 27765 a. Are all Species Occurrences Only Accidental or Transient? Yes___ No_ X_ If yes, document source for determination and stop assessment. b. For species with known occurrences on the Forest since 1990, based on the number of observations and/or year of last observation, can the species be presumed to be established or becoming established in the plan area? Yes _X _ No___ If no, provide explanation and stop assessment c. For species with known occurrences on the Forest predating 1990, does the weight of evidence suggest the species still occurs in the plan area? Yes___ No___ Provide explanation for determination: N/A. Occurrences have been recorded since 1990. If determination is no, stop assessment d. Map 1, Crenulate Moonwort Range in Idaho and Surrounding States and Provinces (NRCS 2017). e. Map 2, Crenulate Moonwort occurrences on the Salmon–Challis National Forest (IDFG. 2017a. Idaho Fish and Wildlife Information System, Species Diversity Database, Idaho Natural Heritage Data. Accessed on February 27, 2017.) 3. Is There Substantial Concern for the Species’ Capability to persist Over the Long-term in the Plan Area Based on Best Available Scientific Information? Table 2. Status summary based on existing conservation assessments Entity Status/Rank (include definition if Other) Global Rank G3: Vulnerable (At moderate risk of extinction due to a restricted range, relatively few populations (often 80 or fewer), recent and widespread declines, or other factors)1 State Rank S1: Critically Imperiled (At very high risk of extinction due to extreme rarity (often 5 or fewer populations), very steep declines, or other factors)1 USDA Forest Region 1: Sensitive Beaverhead-Deerlodge, Flathead, Helena, Kootenai, Idaho Panhandle National Forests (Known), Clearwater Service National Forest (Sensitive)2 Region 4: Sensitive Ashley, Targhee, Toiyabe, Uinta National Forests3 USDI FWS Not listed as a candidate species4 Other Idaho Native Plant Society: 2016 – on list, not yet ranked5; 2011 – GP36 BLM: Not listed7 1. Idaho Natural Heritage Program. 2016. IDNHP Tracked Plant Species 2016. On file. Accessed January 12, 2018 2. USFS Region 1. 2011. 2011 Sensitive Species List Idaho and Montana. Website: http://fsweb.r1.fs.fed.us/wildlife/wwfrp/TESnew.htm. Accessed January 10, 2017. 3. USFS Region 4. 2016. Proposed, Endangered, Threatened, and Sensitive Species List. On file. Accessed January 11, 2017. 4. USFWS. 2017. Candidate species believed to or known to occur in Idaho. Website: https://ecos.fws.gov/ecp0/reports/species-listed-by-state-report?state=ID&status=candidate. Accessed January 12, 2018. 5. Idaho Native Plant Society. 2016. INPS Rare Plant List May 2016. https://idahonativeplants.org/rare-plants-list/ Accessed January 10, 2018. 6. Idaho Native Plant Society. 2011. Results of the twenty-fifth Idaho Rare Plant Conference – The Idaho Native Plant Society rare plant list. Website: https://idahonativeplants.org/rpc/pdf/2011_Results_IRPC_v2.2.pdf. Accessed on January 11, 2018. 7. BLM. 2016. Bureau of Land Management Idaho Special Status Plants List Aug 2016. On file. Accessed 15 January, 2018. Table 3. Status summary based on best available scientific information. Species (Scientific and Common Name): Botrychium crenulatum (crenulate moonwort) Criteria Rank Rationale Literature Citations 1 D Crenulate moonwort is only known from one population on the Salmon- IDFG. 2017. Idaho Fish and Wildlife Distribution on Challis National Forest (EO 6; Irwin 2014), on the Lost River Ranger Information System, Species Diversity Salmon-Challis District in Custer County. This population is in the Eastern Boulder Database, Idaho Natural Heritage National Forest Mountains in the North Fork Big Lost River valley, between Slide and Data. Accessed on February 27, 2017. Corral Canyons (T7N, R19E, S18). Although a floristic inventory of the Irwin, J. J. 2014. “A Floristic Inventory SCNF took place (Irwin 2014), targeted systematic surveys have not been of East-Central Idaho, U.S.A.” Master’s conducted. Potential habitat (see Criterion 6) is moderately abundant thesis, University of Wyoming, and widely distributed across the Forest. Laramie. Confidence in Rank: High, Medium, or Low 2 C Crenulate moonwort is known from two historic and three contemporary Ahlenslager, K., and L. Potash. 2007. Distribution in occurrences in Idaho (IDFG EO data). Historic EOs are from 1947 and Conservation Assessment for 13 surrounding 1948, from the Clearwater National Forest and Idaho Panhandle National Species of Moonworts (Botrychium Swartz Subgenus Botrychium). USDA geographic area Forest, respectively. No data is associated with these EOs from which to Forest Service Region 6, Portland, draw conclusions about the size of the populations associated with them. Oregon, and USDI Bureau of Land Management, Oregon and Contemporary occurrences of Idaho populations of crenulate moonwort Washington. are from the Idaho Panhandle National Forest, Fernan Ranger District (1993), and Boise National Forest (2004), Lowman and Mountain Home Beatty, B. L., W. F. Jennings, and R. C. Ranger Districts. One occurrence (Lowman Ranger District) from Boise Rawlinson. 2003. Botrychium National Forest is in the Bear Creek Research Natural Area. These ascendens W.H. Wagner (trianglelobe occurrences were reported to consist of between one and 30-40 stems moonwort), B. crenulatum W.H. each. Contemporary EOs report that only cursory surveys were Wagner (scalloped moonwort), and B. completed, and additional under surveyed habitat existed at the time at lineare W.H. Wagner (narrowleaf grapefern): a technical conservation the occurrence locations. assessment. USDA Forest Service, Rocky Mountain Region, Lakewood, The range of crenulate moonwort extends into other western states, Colorado. including portions of Washington, Oregon, Montana, Utah, Nevada, California, Arizona, and Wyoming, and the Canadian provinces of British FNA (Flora of North America). 2017. Columbia, Alberta, and Ontario (FNA 2017, NatureServe 2017). FNA Volume 2, Ophioglossaceae, Species (Scientific and Common Name): Botrychium crenulatum (crenulate moonwort) Criteria Rank Rationale Literature Citations Botrychium, Botrychium crenulatum. In comprehensive conservation assessments for this and other moonwort Internet website: species, Beatty et al. (2003) for Forest Service Region 2, and Ahlenslager http://www.efloras.org/florataxon.asp and Potash (2007) for Region 6, note that without additional species- x?flora_id=1&taxon_id=233500275. specific surveys or census data, it is difficult to determine the population IDFG. 2017. Idaho Fish and Wildlife trends, distribution, viability, vulnerability, or abundance of Botrychium Information System, Species Diversity species (including B. crenulatum) within their ranges. No such Database, Idaho Natural Heritage conservation assessment exists for Region 4, however the findings from Data. Accessed on February 27, 2017. nearby regions are likely applicable to Region 4. NatureServe. 2017. Comprehensive Because crenulate moonwort has a wide distribution outside of the Report Species – Botrychium Salmon-Challis National Forest, including several other western states crenulatum. NatureServe Explorer: An and Canadian provinces, it was assigned the rank of C. online encyclopedia of life [web application]. Version 7.1. NatureServe, Confidence in Rank: High, Medium, or Low Arlington, Virginia. 3 B Dispersal capability of crenulate moonwort is limited by the distance its Farrar, D. R. 2011. Systematics and Dispersal propagules (spores) may typically travel. In Botrychium species, self- Taxonomy of Genus Botrychium. Capability fertilization regularly occurs, thus migration of populations should only Internet website: be limited by the distance individual spores can travel and the probability http://www.public.iastate.edu/~herba of the spore landing in suitable habitat (Farrar 2011). Peck et al.
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