Species of Concern. Greenhill is located within a designated Conservation Opportunity Area (WV-23) as determined by the ODFW. This conservation area contains some of the largest remaining fragments of Willamette Valley native wet prairie, which provides important habitat for migratory birds. The Xxxx Xxxxx Wildlife Area, located less than 2 miles west of the Greenhill site, provides lake and marshland habitat for numerous species of migratory waterfowl, including Dusky Canada Goose, Northern Pintail, Great Egret, Ring-billed Gull and Black-bellied Plover. Xxxx Xxxxx Reservoir is listed as an Important Bird Area by the Audubon Society of Portland, and it is an integral part of the larger migratory bird corridor known as the Pacific Flyway. Additionally, there are several known populations of endemic and listed endangered and threatened plant species within this conservation area: Willamette Valley daisy (Erigeron decumbens var decumbens), Xxxxxxx’x lupine (Lupinus sulphureus subsp. kincaidii), and Xxxxxxxx’x desert parsley (Lomatium bradshawii). Xxxxxxx’x lupine is the larval host for the listed endangered Fender’s Blue Butterfly (Icaricia icaroidies fenderi). Immediately adjacent to the Greenhill site is an active wet prairie restoration project overseen by the BLM. The U.S. Fish & Wildlife Service (USFWS) has identified critical habitat for both Willamette Valley daisy and Xxxxxxx’x lupine on the BLM site. Streaked horned lark (STHL) is a federally listed “Threatened” species that has been observed on various sites throughout the xxxx Xxxxxx Wetlands. The Bank site will accommodate STHL habitat primarily in and around the vernal pools and throughout the Bank as site preparation and vegetation management occurs. Site preparation and invasive species treatments will fall under the 4(d) exemption for STHL, and planting and seeding will be conducted outside the nesting window; in the event planting will be conducted in spring a 300 foot buffer will be provided from active STHL nests.
Species of Concern. Gila topminnow was listed as an endangered species on March 11, 1967. No critical habitat has been designated for this species. Gila topminnow is a small, 25 to 50 mm long, livebearing fish (Minckley 1973) of the family Poeciliidae. It occurs in the Gila, Sonora, and de la Xxxxxxxxxx River drainages in Arizona and New Mexico, United States and Sonora, Mexico (Minckley 1973, Xxxxxxxxxx et al. 1985). The species was once one of the most common fishes in the Gila River and its tributaries and Xxxxxx 1941). Destruction of its habitat through water diversion, stream downcutting, backwater draining, vegetation clearing, channelization, water impoundment, and other human uses of natural resources; plus competition with and/or predation by non-native fish species, most notably mosquitofish (Gambusia have resulted in extirpation of Gila topminnow throughout most of its range (Xxxxx et al. 1983, U.S. Fish and Wildlife Service 1984). At present, Gila topminnow is known from only nine naturally occurring populations in the United States and about 20 reintroduced populations. Cottonwood Spring supports one of these nine naturally occurring populations. It is one of only three of those natural sites presently free of mosquitofish (Xxxxxx 1986, Simons 1987, Xxxxxx et al. 1991, Xxxxx and Xxxxxx 1992). Gila topminnow are found throughout the Cottonwood Spring area, including the springhead, the canal, the cienega area, and the downstream channel. Longfin dace is the only cther fish present. As a large, mosquitofish-free, natural population, the Spring Gila tcpminnow are considered to be very important to the long-term survival of the species. Huachuca water xxxxx is a category 1 candidate species. This is a small herbaceous semi-aquatic perennial plant with slender erect leaves that grow from the creeping rootstalks. The leaves are generally less than 3 mm in diameter and average 50 in height. There are nine known sites in the United States which support this species between 3,500 and 6,500 feet elevation in southern Arizona and adjacent Sonora, Mexico. It extends from the Rio San Bernardino on the east to Sonoita Creek on the west, and from Tucson on the north (historically) to Cananea, Mexico, on the south. Within that range it is endemic to cienega habitat. Threats to this species include modification of watershed hydrology from groundwater pumping, surface water diversion, impoundment for urban, agricultural, or recreational purposes, overgrazing in the surrounding wat...
Species of Concern. Legend Proposed Woody Invasive Clearing Project Areas Areas Previously Cleared of Woody Invasives LakePlain Chiwaukee Prairie Spring Bluff Illinois Beach Ü Miles
