This area is a transition zone at the nexus of three ecoregions and as a results has a high diversity of species in unique assemblages.
Ecoregions
East Cascades
The East Cascade ecoregion extends from the Cascade Mountains' summit east to the warmer, drier high desert and down the length of the state. This ecoregion varies dramatically from its cool, moist border with the West Cascades ecoregion to its dry eastern border, where it meets sagebrush desert landscapes.
Klamath Mountains
The Klamath Mountains ecoregion covers much of southwestern Oregon, including the Klamath Mountains, Siskiyou Mountains, the interior valleys and foothills between these and the Cascade Range, and the Rogue and Umpqua river valleys. Several popular and scenic rivers run through the ecoregion, including the Umpqua, Rogue, Illinois, and Applegate rivers. Historically, this ecoregion is known …
West Cascades
The West Cascades ecoregion extends from east of the Cascade Mountains summit to the foothills of the Willamette, Umpqua, and Rogue Valleys, and spans the entire length of the state of Oregon. It is largely dominated by conifer forests, moving into alpine parklands and dwarf shrubs at higher elevations.
Key Habitats
Grasslands
Grasslands include a variety of upland grass-dominated habitats, such as upland prairies, coastal bluffs, and montane grasslands.
Late Successional Mixed Conifer Forests
Late successional mixed conifer forests provide a multi-layered tree canopy, including large-diameter trees, shade-tolerant tree species in the understory, and a high volume of dead wood, such as snags and logs.
Natural Lakes
Natural lakes are relatively large bodies of freshwater surrounded by land that were formed through geological processes, such as glacial scouring, tectonic movements, volcanic activity and river meander cutoffs. In Oregon, natural lakes are defined as standing water bodies larger than 20 acres, including some seasonal lakes. Depth is not a reference for characterization of …
Oak Habitats
There are several oak habitat types in Oregon, where oaks comprise most of the canopy. These can include oak woodlands, oak forest, oak chaparral, and riparian oak. Oak savanna is covered in the Grasslands Key Habitat. Oaks may also co-dominate a canopy in oak/fir, oak pine, and oak hardwood habitats.
Ponderosa Pine Woodlands
Ponderosa pine woodlands are common in Oregon’s eastside ecoregions. While dominated by ponderosa pine, these woodlands may also have lodgepole pine, western juniper, aspen, western larch, grand fir, Douglas-fir, mountain mahogany, incense cedar, sugar pine, or white fir, depending on ecoregion and site conditions. Known for their open forest structure, these woodlands generally have fewer …
Flowing Water and Riparian Habitats
Flowing Water and Riparian Habitats include all naturally occurring flowing freshwater streams and rivers throughout Oregon as well as the adjacent riparian habitat.
Species of Greatest Conservation Need
Acorn Woodpecker (Observed)
Melanerpes formicivorus
Pacific Marten (Observed)
Martes caurina
American Pika (Modeled Habitat)
Ochotona princeps
American Three-toed Woodpecker (Modeled Habitat)
Picoides dorsalis
Black-backed Woodpecker (Modeled Habitat)
Picoides arcticus
California Mountain Kingsnake (Observed)
Lampropeltis zonata
California Myotis (Observed)
Myotis californicus
Cascades Frog (Modeled Habitat)
Rana cascadae
Chinook Salmon (Documented)
Oncorhynchus tshawytscha
Clouded Salamander (Modeled Habitat)
Aneides ferreus
Coastal Cutthroat Trout (Documented)
Oncorhynchus clarki clarki
Coastal Tailed Frog (Modeled Habitat)
Ascaphus truei
Coho Salmon (Documented)
Oncorhynchus kisutch
Common Nighthawk (Observed)
Chordeiles minor
Pacific Fisher (Observed)
Pekania pennanti
Flammulated Owl (Observed)
Psiloscops flammeolus
Fringed Myotis (Observed)
Myotis thysanodes
Foothill Yellow-legged Frog (Observed)
Rana boylii
Gentner’s fritillary (Observed)
Fritillaria gentneri
Great Gray Owl (Observed)
Strix nebulosa
Greater Sandhill Crane (Observed)
Antigone canadensis tabida
Hoary Bat (Observed)
Lasiurus cinereus
Lewis’s Woodpecker (Observed)
Melanerpes lewis
Long-legged Myotis (Observed)
Myotis volans
Mardon Skipper Butterfly (Observed)
Polites mardon
Monarch Butterfly (Observed)
Danaus plexippus
American Goshawk (Observed)
Accipiter atricapillus
Northern Red-legged Frog (Observed)
Rana aurora
Northern Spotted Owl (Observed)
Strix occidentalis caurina
Olive-sided Flycatcher (Observed)
Contopus cooperi
Oregon Spotted Frog (Observed)
Rana pretiosa
Oregon Vesper Sparrow (Observed)
Pooecetes gramineus affinis
Pallid Bat (Observed)
Antrozous pallidus
Western Purple Martin (Observed)
Progne subis arboricola
Red-necked Grebe (Holboell) (Modeled Habitat)
Podiceps grisegena holbollii
Ringtail (Modeled Habitat)
Bassariscus astutus
Scalloped Juga (Observed)
Juga acutifilosa
Silver-haired Bat (Observed)
Lasionycteris noctivagans
Siskiyou Hesperian (Observed)
Vespericola sierranus
Steelhead / Rainbow / Redband Trout (Documented)
Oncorhynchus mykiss ssp
Townsend’s Big-eared Bat (Observed)
Corynorhinus townsendii
Northwestern Pond Turtle (Observed)
Actinemys marmorata
Western Toad (Observed)
Anaxyrus boreas
White-headed Woodpecker (Observed)
Dryobates albolarvatus albolarvatus
Yellow-breasted Chat (Observed)
Icteria virens auricollis