Bigelow sagebrush is a native woody shrub [19]. Growing from 12 to 16, rarely 24+ inches (30-40, rarely 60+ cm) tall at maturity [1,16,27], it is a dwarf sagebrush [1,2]. Form is rounded with multiple, recurved stems. Bark is shreddy. Leaves are evergreen, from 0.6 to 1 inch (15-25 mm) long and 0.08 to 0.16 inch (2-4 mm) wide [14,19]. The inflorescence is a dense panicle with 2 to 7 flowers per flowerhead [14,27]. Bigelow sagebrush is similar in appearance to short-statured big sagebrush plants, but is primarily distinguished from all other woody sagebrush species by its flowers [18,30]. Bigelow sagebrush is unique among the woody sagebrush species in having 1 to 3 pistillate ray flowers, although ray flowers are lacking on some plants [18,52]. Ray flowers are marginally located, while the inner 1 to 5 disc flowers are perfect and fertile. Bigelow sagebrush fruits are dry, glabrous achenes about 0.04 inch (1 mm) in length [14,27,35].
Stand structure of Bigelow sagebrush communities is poorly described in the literature. Biological soil crust cover is relatively high in Bigelow sagebrush communities compared to other woody sagebrush species [2].
Physiology: Bigelow sagebrush is one of the most drought-tolerant sagebrushes in North America [1,18,35,52].
Fire adaptations: As of this writing (2002), little is known of the fire ecology of Bigelow sagebrush. As a light-tolerant species [40] that reproduces solely from seed [1,52,60], Bigelow sagebrush may be similar to other woody sagebrush taxa, establishing primarily from off-site seed sources after fire. Much research is needed to understand the life history, successional status, and fire ecology of this species.
FIRE REGIMES of Bigelow sagebrush communities are not described in the literature. The following table provides some fire regime intervals for plant communities and ecosystems where Bigelow sagebrush is sometimes an important component of the vegetation. Find further fire regime information for the plant communities in which this species may occur by entering the species name in the FEIS home page under "Find FIRE REGIMES".
Community or Ecosystem Dominant Species Fire Return Interval Range (years) basin big sagebrush Artemisia tridentata var. tridentata 12-43 [45] Wyoming big sagebrush Artemisia tridentata var. wyomingensis 10-70 (40**) [54,61] saltbush-greasewood Atriplex confertifolia-Sarcobatus vermiculatus < 35 to < 100 desert grasslands Bouteloua eriopoda and/or Pleuraphis mutica 5-100 plains grasslands Bouteloua spp. < 35 blue grama-buffalo grass Bouteloua gracilis-Buchloe dactyloides < 35 grama-galleta steppe Bouteloua gracilis-Pleuraphis jamesii < 35 to < 100 blackbrush Coleogyne ramosissima < 35 to < 100 wheatgrass plains grasslands Pascopyrum smithii < 35 pinyon-juniper Pinus-Juniperus spp. 39] Colorado pinyon Pinus edulis 10-400+ [11,13,22,39] **meanBigelow sagebrush provides valuable winter and spring forage for wildlife and livestock. Productivity of Bigelow sagebrush communities is rated moderate relative to other sagebrush communities [18].
Bigelow sagebrush was the single most important item in the fall diet of pronghorn in northern Arizona [5].
Palatability/nutritional value: Palatability and nutritional value of Bigelow sagebrush are high relative to other sagebrush species [18,35,48]. Bigelow sagebrush twigs are less woody, and its leaves are less bitter and have a milder odor, than associated sagebrush taxa [26,35]. Near Price, Utah, chemical analysis of woody sagebrush species showed Bigelow sagebrush was low in 9 volatile compounds compared to 7 associated sagebrush taxa. Bigelow sagebrush, mountain big sagebrush (Artemisia tridentata ssp. vaseyana), and gray low sagebrush (A. arbuscula ssp. arbuscula) were the top 3 taxa preferred by mule deer in feeding trials [48]. Palatability of Bigelow sagebrush in Utah is rated as follows [9]:
cattle fair domestic sheep good horses poor pronghorn fair elk poor mule deer fair small mammals fair small nongame birds fair upland game birds good waterfowl poorCover value of Bigelow sagebrush is Utah is rated as follows [9]:
pronghorn poor elk poor mule deer poor small mammals fair small nongame birds fair upland game birds fair waterfowl fairBigelow sagebrush occurs in Colorado pinyon-oneseed juniper (Pinus
edulis-Juniperus monosperma), singleleaf pinyon (P. monophylla), and desert shrub communities
of the Sonoran, Great Basin, and Mojave deserts [6,17,21,31,35,43,58].
Desert shrub associates include
big sagebrush (Artemisia tridentata), black sagebrush (A. nova), blackbrush
(Coleogyne ramosissima), saltbush (Atriplex spp.), and
broom snakeweed (Gutierrezia sarothrae) [20,31,35,37]. Larson and Moir
[26] describe a oneseed juniper/Bigelow sagebrush community type of northern
Arizona that may extend into southern Utah and southwestern Colorado.
Bigelow sagebrush also occurs in transitional desert shrub-desert grassland
communities. Associated species in northern Arizona and New Mexico include big sagebrush,
green rabbitbrush (Chrysothamnus viscidiflorus), green ephedra (Ephedra
viridis), fourwing saltbush (Atriplex canescens), galleta (Pleuraphis
jamesii), and blue grama (Bouteloua
gracilis) [5,30].
Associates in transitional Great Basin-Great Plains desert shrub-desert grasslands of
northern Arizona include fourwing saltbush, Fremont barberry (Mahonia
fremontii), blue grama, ring muhly (Muhlenbergia torreyana), and
bottlebrush squirreltail (Elymus elymoides) [44]. Jameson and others [17]
provide a vegetation typing of a Bigelow sagebrush-dominated community in northern Arizona.
Bigelow sagebrush reproduces from seed [1,52,60]. Little is known of the species' reproductive ecology. Further research is needed in this area.
Breeding system: Bigelow sagebrush is polygamomonecious [1,40]. Common garden and molecular genetic studies suggest ecotypic variation exists between Bigelow sagebrush populations [32,34].
Pollination: Pollen is spread by wind [40].
Seed production: No information
Seed dispersal: No information
Seed banking: No information
Germination: No information
Seedling establishment/growth: No information
Asexual regeneration: Bigelow sagebrush does not reproduce asexually [1,52,60].
Artemisia bigelovii (lat. Artemisia bigelovii) - mürəkkəbçiçəklilər fəsiləsinin yovşan cinsinə aid bitki növü.
İkiləpəlilər ilə əlaqədar bu məqalə qaralama halındadır. Məqaləni redaktə edərək Vikipediyanı zənginləşdirin. Artemisia bigelovii (lat. Artemisia bigelovii) - mürəkkəbçiçəklilər fəsiləsinin yovşan cinsinə aid bitki növü.
Artemisia bigelovii is a North American species of sagebrush known by the common name Bigelow sagebrush or flat sagebrush.[3] It grows in the deserts of the southwestern United States.[4]
It is native to California (Inyo + San Bernardino Counties),[3] Arizona, Nevada, Utah, Colorado, New Mexico, and Texas.[5] It grows in desert, basin, grassland, and juniper woodland habitats. It is very drought-tolerant and lives in arid regions on sandy and limestone-rich soils.[6]
Artemisia bigelovii is a shrub growing from a woody base and reaching a maximum height around 50 cm (20 inches). It has many slender, curving branches with shredding bark and is generally in overall habit.[4]
The stem branches and leaves are coated in silvery hairs, giving the plant a gray color. The leaves are less than 3 centimeters long and may end in a point or in three distinct teeth.[4]
The inflorescence is a panicle of flower heads containing yellowish disc florets and occasionally a small ray floret. The fruit is a tiny achene about a millimeter long.[4]
This species of sagebrush is good winter fodder for grazing animals and it is cultivated as plant cover on recovering rangeland and for erosion control.[6]
Artemisia bigelovii is a North American species of sagebrush known by the common name Bigelow sagebrush or flat sagebrush. It grows in the deserts of the southwestern United States.
Artemisia bigelovii, es una especie de arbusto del género Artemisia, se distribuye por los Estados Unidos:
Es nativa del suroeste de Estados Unidos, donde crece en el desierto, depresiones, pastizales y bosques de enebros. Es muy resistente a la sequía y vive en las regiones áridas en suelos de arena y ricos en piedra caliza.[1]
Es un arbusto tipido que crece desde una base leñosa y alcanza una altura máxima de alrededor de medio metro. Tiene muchas ramas curvas y esbeltas con corteza y generalmente de forma redondeada. Los ramas y las hojas están recubiertas de pelos plateados, dando a la planta un color gris. Las hojas son de menos de 3 centímetros de largo y puede terminar en un punto o en tres dientes distintos. La inflorescencia es una panícula de cabezas de flores de color amarillento. El fruto es un pequeño aquenio de alrededor de un milímetro de largo. Esta especie de artemisa es en invierno buen forraje para los animales de pastoreo y se cultiva como planta de cobertura en la recuperación de tierras de pastoreo y para el control de la erosión.[1]
Artemisia bigelovii fue descrita por Asa Gray y publicado en Reports of explorations and surveys : to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean, made under the direction of the Secretary of War 4(5): 110. 1857.[2]
Hay dos teorías en la etimología de Artemisia: según la primera, debe su nombre a Artemisa, hermana gemela de Apolo y diosa griega de la caza y de las virtudes curativas, especialmente de los embarazos y los partos. Según la segunda teoría, el género fue otorgado en honor a Artemisia II, hermana y mujer de Mausolo, rey de la Caria, 353-352 a. C., que reinó después de la muerte del soberano. En su homenaje se erigió el Mausoleo de Halicarnaso, una de las siete maravillas del mundo. Era experta en botánica y en medicina.[3]
bigelovii: epíteto
Artemisia bigelovii, es una especie de arbusto del género Artemisia, se distribuye por los Estados Unidos:
Artemisia bigelovii là một loài thực vật có hoa trong họ Cúc. Loài này được A.Gray mô tả khoa học đầu tiên năm 1857.[1]
Artemisia bigelovii là một loài thực vật có hoa trong họ Cúc. Loài này được A.Gray mô tả khoa học đầu tiên năm 1857.
