|
Ana River
The Ana River is a short spring-fed river in south-central Oregon. It is on the northwestern edge of the Great Basin drainage. It flows from springs at the foot of Winter Ridge through high desert, range, and wetlands before emptying into Summer Lake. For most of its course, the Ana River flows through the Summer Lake Wildlife Area, which is maintained by the Oregon Department of Fish and Wildlife. The river provides habitat for many mammal and bird species, as well as several fish species, including the rare Summer Lake Tui chub. The largest hybrid striped bass ever caught in Oregon was taken from Ana Reservoir in 2009. Watershed The Ana River is located a few miles east of the small unincorporated community of Summer Lake, Oregon. The river flows for through the high desert country of Lake County, Oregon, before draining into Summer Lake.Anderson, E. William, Michael M. Borman, and William C. Krueger"Vegetation", "High Desert Ecological Province", ''The Ecological Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Summer Lake (Oregon)
Summer Lake is a large, shallow, Soda lake, alkali lake in Lake County, Oregon, Lake County, Oregon, United States located south of the small, Unincorporated area, unincorporated community of Summer Lake, Oregon. At high water it is about long and wide, and supports a wide variety of birds and other wildlife in its marshes. The lake was named by explorer John C. Frémont on his expedition into Central Oregon in 1843. Ancient Lake Chewaucan The arid lands around Summer Lake were once lush. During the Pleistocene Epoch, vast areas of this region of south central Oregon were covered by lakes and wetlands. As the last ice age was ending, rain and runoff from melting snow filled the lowlands throughout this region of the Great Basin, creating an immense, freshwater lake called Lake Chewaucan. The lake covered at depths of up to ."Ancient Lakes", Oregon Historical Marker, Summer Lake, Oregon. Lake Chewaucan covered the Summer Lake basin and drainage system much of the late Pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Aquatic Ecosystem
An aquatic ecosystem is an ecosystem found in and around a body of water, in contrast to land-based terrestrial ecosystems. Aquatic ecosystems contain communities of organisms—aquatic life—that are dependent on each other and on their environment. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. Freshwater ecosystems may be lentic (slow moving water, including pools, ponds, and lakes); lotic (faster moving water, for example streams and rivers); and wetlands (areas where the soil is saturated or inundated for at least part of the time). Types Marine ecosystems Marine coastal ecosystem Marine surface ecosystem Freshwater ecosystems Lentic ecosystem (lakes) Lotic ecosystem (rivers) Wetlands Functions Aquatic ecosystems perform many important environmental functions. For example, they recycle nutrients, purify water, attenuate floods, recharge ground water and provide habitats for wildlife. The biota of an aqu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Scirpus
''Scirpus'' is a genus of grass-like species in the sedge family Cyperaceae many with the common names club-rush, wood club-rush or bulrush. They mostly inhabit wetlands and damp locations. Description ''Scirpus'' are rhizomatous perennial herbs, with 3-angled stems and flat grass-like leaves. The flowers are in clusters of small spikelets, often brown or greenish brown. Some species (e.g. '' S. lacustris'') can reach a height of , while '' S. sylvaticus'' is about and others, such as '' S. supinus'', are much smaller, only reaching tall. Taxonomy The taxonomy of the genus is complex, and under review by botanists. Recent studies by taxonomists of the Cyperaceae have resulted in the creation of several new genera, including the genera ''Schoenoplectus'' and ''Bolboschoenus''; others (including '' Blysmus'', '' Isolepis'', '' Nomochloa'', and '' Scirpoides'') have also been used. At one point this genus held almost 300 species, but many of the species once assigned to it have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sedges
The Cyperaceae () are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large; botanists have described some 5,500 known species in about 90 generathe largest being the "true sedges" (genus ''Carex''), with over 2,000 species. Distribution Cyperaceae species are widely distributed with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges grow in almost all environments, many thrive in wetlands A wetland is a distinct semi-aquatic ecosystem whose groundcovers are flooded or saturated in water, either permanently, for years or decades, or only seasonally. Flooding results in oxygen-poor ( anoxic) processes taking place, especially ... or in poor soils. Ecological communities dominated by sedges are known as s or as sedge meadows. Classification Some species superficially resemble the closely related Juncaceae , rushes and the more distantly related grasse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Ditch
A ditch is a small to moderate trench created to channel water. A ditch can be used for drainage, to drain water from low-lying areas, alongside roadways or fields, or to channel water from a more distant source for plant irrigation. Ditches are commonly seen around farmland, especially in areas that have required drainage, such as The Fens in eastern England and much of the Netherlands. Roadside ditches may provide a hazard to motorists and cyclists, whose vehicles may crash into them and get damaged, flipped over, or stuck and cause major injury, especially in poor weather conditions and rural areas. Etymology In Anglo-Saxon, the word ''dïc'' already existed and was pronounced ("deek") in northern England and "deetch" in the south. The origins of the word lie in digging a trench and forming the upcast soil into a bank alongside it. This practice has meant that the name ''dïc'' was given to either the excavation or the bank, and evolved to both the words "dike"/" ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Levee
A levee ( or ), dike (American English), dyke (British English; see American and British English spelling differences#Miscellaneous spelling differences, spelling differences), embankment, floodbank, or stop bank is an elevated ridge, natural or artificial, alongside the river banks, banks of a river, often intended to flood control, protect against flooding of the area adjoining the river. It is usually soil, earthen and often runs parallel (geometry), parallel to the course of a river in its floodplain or along low-lying coastlines. Naturally occurring levees form on river floodplains following flooding. Sediment and alluvium are deposition (geology), deposited on the banks and settle, forming a ridge that increases the river channel's capacity. Alternatively, levees can be artificially constructed from fill dirt, fill, designed to regulate water levels. In some circumstances, artificial levees can be environmental degradation, environmentally damaging. Ancient civilization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Willow
Willows, also called sallows and osiers, of the genus ''Salix'', comprise around 350 species (plus numerous hybrids) of typically deciduous trees and shrubs, found primarily on moist soils in cold and temperate regions. Most species are known as willow, but some narrow-leaved shrub species are called osier, and some broader-leaved species are referred to as sallow (from Old English ''sealh'', related to the Latin word ''salix'', willow). Some willows (particularly arctic and alpine species) are low-growing or creeping shrubs; for example, the dwarf willow (''Salix herbacea'') rarely exceeds in height, though it spreads widely across the ground. Description Willows all have abundant watery bark sap, which is heavily charged with salicin, soft, usually pliant, tough wood, slender branches, and large, fibrous, often stoloniferous roots. The roots are remarkable for their toughness, size, and tenacity to live, and roots readily sprout from aerial parts of the plant. Lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Populus Section Aegiros
''Populus'' is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar (), aspen, and cottonwood. The western balsam poplar (Populus trichocarpa, ''P. trichocarpa'') was the first tree to have its full DNA code determined by DNA sequencing, in 2006. Description The genus has a large genetic diversity, and can grow from tall, with trunks up to in diameter. The Bark (botany), bark on young trees is smooth and white to greenish or dark gray, and often has conspicuous lenticels; on old trees, it remains smooth in some species, but becomes rough and deeply fissured in others. The shoots are stout, with (unlike in the related willows) the terminal bud present. The leaves are spirally arranged, and vary in shape from triangular to circular or (rarely) lobed, and with a long petiole (botany), petiole; in species in the sections ''Populus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Western Juniper
''Juniperus occidentalis'', known as the western juniper, is a shrub or tree native to the Western United States, growing in mountains at altitudes of and rarely down to . It is listed as Least Concern on the IUCN Red List because it is a widespread species with an increasing population. Description ''Juniperus occidentalis'' is a shrub or small tree tall. Exceptionally tall specimens can be found in the John Day area of Oregon in excess of tall. The shoots are of moderate thickness among junipers, at diameter. The juvenile leaves (on young seedlings only) are needle-like and long. Arranged in opposite decussate pairs or whorls of three, the adult leaves are scale-like, 1–2 mm long (5 mm on lead shoots) and 1–1.5 mm broad. The cones are berry-like, 5–10 mm in diameter, blue-brown with a whitish waxy bloom, and mature in about 18 months. The male cones are 2–4 mm long and shed their pollen in early spring. The plants are about half monoecious ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Squirreltail
''Elymus elymoides'' is a species of wild rye known by the common name squirreltail. This grass is native to central and western North America. Description ''Elymus elymoides'' is a perennial bunch grass growing to around in height. Its erect solid stems have flat or rolled leaf blades. The inflorescence is up to long and somewhat stiff and erect, with spikelets 1 or 2 cm long not counting the awn, which may be long and sticks straight out at maturity, making the inflorescence look like a bottlebrush, and aiding wind dispersal of the seeds. In contrast, the early season spike is compact and reddish. Subspecies Subspecies include: *''E. e.'' ssp. ''brevifolius'' - widespread *''E. e.'' ssp. ''californicus'' - occurs in the western half of the species range *''E. e.'' ssp. ''elymoides'' - widespread *''E. e.'' ssp. ''hordeoides'' - limited mostly to the Pacific Northwest Distribution and habitat The species is native to most of North America west of the Mississippi River ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Oryzopsis Hymenoides
''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.''Oryzopsis'' USDA Plants Database (24 Nov 2011) The name alludes to the resemblance between this genus and true rice, ''.'' ; Species * '' Oryzopsis asperifolia'' – roughleaf ricegrass ''Oryzopsis asperifolia'' USDA Plants Database (24 Nov 2011) - Canada (all 10 provinces plus |
Achnatherum
''Achnatherum'' is a genus of flowering plants in the grass family, Poaceae. It includes 20 species of needlegrass native to temperate Eurasia and North Africa. Several needlegrass species have been switched between ''Achnatherum'' and genus ''Stipa''; taxonomy between the two closely related genera is still uncertain. In 2019 Peterson ''et al.'' reorganized the genera in tribe Stipeae based on molecular DNA studies, and placed the species from the Americas into other genera.Peterson PM, Romaschenko K, Soreng RJ, Valdés Reyna J (2019) A key to the North American genera of Stipeae (Poaceae, Pooideae) with descriptions and taxonomic names for species of ''Eriocoma, Neotrinia, Oloptum'', and five new genera: ''Barkworthia, × Eriosella, Pseudoeriocoma, Ptilagrostiella'', and ''Thorneochloa''. ''PhytoKeys'' 126: 89-125. https://doi.org/10.3897/phytokeys.126.34096 Species 20 species are accepted by Plants of the World Online as of October 2024: Unplaced species * ''Achnatherum ros ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
