Gambel’s watercress Rorippa gambellii E NO CA very limited numbers Hickman’s potentilla Potentilla hickmanii E ? CA Determine by FWS Holmgren milkvetch Astragalus holmgreniorum E YES UT 1-May 31 Huachuca Water Umbel Lilaeopsis schaffneriana var. recurva E YES AZ Determine by FWS La Graiosa thistle Cirsium loncholepis E YES C Determine by FWS Little Aguja pondweed Potamogeton clystocarpus E NO CA Determine by FWS Marsh Sandwort Arenaria paludicola E NO CA May1 to Sep 1 Navajo Sedge specuicola T YES UT May 1-Sept 30 Otay mesa mint Pogogyne nudiuscula E NO CA Determine by FWS Pecos River Sunflower Helianthus paradoxus T YES NM Aug 1 – Nov 1 Salt Cordylanthus maritimus ssp. maritimus E NO CA Mar 15 – Jul 15 Slender-horned spineflower Dodecahema leptoceras E ? CA Determine by FWS Spring-loving centaury Centaurium namophilum T YES CA, NV Avoid year-round; extremely restricted habitat Ute Spiranthes diluvialis T NO UT July 15- Sep 1 Ventura Marsh milk-vetch Astragalus pycnostachyus var. lanosissimus E YES CA Year-round; only one small population Willowy monardella Monardella viminea E YES CA June 1-Sep 1 MAMMALS Amargosa vole Microtus californicus scirpensis E YES CA Determine by FWS Buena Vista Lake ornate shrew ornatus relictus E P CA Mar 1 – Jul 1 New Mexico meadow jumping Zapus hudsonius luteus E P AZ, NM Determine by FWS FIGURE 1. Flow guiding WLFW-SWFL Planners to determine when oversight by NRCS State Biologist and/or the Service is required. 4.0 Effects of the Action The effects of the action are the direct and indirect impacts of the proposed federal action on the species and critical habitat, together with the effects of activities that are interrelated or interdependent with that action, that will be added to the environmental baseline (50 CFR § 402.02).
Potential Adverse Effect(s) to SWFL – T AE1: Physical Disturbance including AE3: Increased potential of introduction of invasive plants Potential Adverse Effect(s) to – Fish- T AE1: Physical Disturbance including Potential Adverse Effect(s) to – Mammals- T AE1: Physical Disturbance including noise AE3: Increased potential of introduction of invasive plants Potential Adverse Effect(s) to – Plants- T AE1: Physical Disturbance including AE3: Increased potential of introduction of invasive plants Potential Adverse Effect(s) to – Birds (other than SWFL)- T AE1: Physical Disturbance including noise AE3: Increased potential of introduction of invasive plants Potential Adverse Effect(s) to – Invertebrates- T AE1: Physical Disturbance including noise Potential Adverse Effect(s) to – Amphibians- T AE1: Physical Disturbance including noise Potential Adverse Effect(s) to – Reptiles- T AE1: Physical Disturbance including noise Additional Conservation Measures – (if Grazed) Treated sites may be deferred from grazing for a period of time determined to be necessary to restore SWFL habitat based on pre and post site treatment conditions. Implementation of grazing management plans, to the extent practicable, will meet habitat conditions for riparian habitat as recommended by WHEG Frequency – Grazing will occur at a rate conducive to creating or maintaining desired habitat structure for nesting SWFL. Duration – Grazing periods will be designed to establish or maintain desired habitat conditions as recommended by WHEG Timing – Grazing will be scheduled to avoid potential disturbance to SWFL and occupied SWFL habitat during breeding season – from April 15 to Sept 15, except when following prescribed grazing protocol during growing season as stated Intensity – the amount of forage removed (or left) during any particular grazing cycle will be in keeping with the life cycle requirements of the SWFL. See description in Appendix III. Motorized vehicles will not be used to herd livestock within listed species habitat. Provide off-site water supply for livestock and wildlife to maintain or improve streamside vegetation. Supporting Practices Conservation Practice: Access Control (472) Definition – The temporary or permanent exclusion of animals, people, vehicles, and/or equipment from an area. Purpose –- Achieve and maintain desired resource conditions by monitoring and managing the intensity of use by animals, people, vehicles, and/or equipment in coordination with the application schedule of practices, measures and activities specified in the conservation plan. Resource Concern – RC 03: Soil Erosion – Excessive Bank Erosion