Rainfall Interception by Mountain Big Sagebrush ( Artemisia tridentata spp. vaseyana ): Dryland Shrub Canopy Cover Affects Net Precipitation

2021 ◽  
Author(s):  
Devon K. Snyder ◽  
Tamzen K. Stringham ◽  
Keirith A. Snyder
Keyword(s):  
Artemisia Tridentata ◽  
Canopy Cover ◽  
Rainfall Interception ◽  
Big Sagebrush ◽  
Shrub Canopy

scholarly journals First Report of Rust Caused by Puccinia similis on Artemisia tridentata in Idaho and Oregon

Plant Disease ◽  
2010 ◽  
Vol 94 (3) ◽  
pp. 380-380
Author(s):  
R. K. Sampangi ◽  
M. C. Aime ◽  
S. K. Mohan
Keyword(s):  
Great Basin ◽  
Large Subunit ◽  
Artemisia Tridentata ◽  
Canopy Cover ◽  
Home Garden ◽  
Infected Leaf ◽  
Usda Forest Service ◽  
First Report ◽  
Big Sagebrush ◽  
Herbarium Data

Artemisia tridentata Nutt. (Asteraceae), commonly called sagebrush or big sagebrush, is a coarse, hardy, silvery-gray bush growing in arid sections of the Great Basin Desert of intermountain plateau covering portions of California, Idaho, Nevada, Oregon, Utah, and Wyoming in the western United States. Sagebrush is a key component of these ecosystems, providing canopy cover, nesting habitat, and a food source for numerous species of small animals and birds (4). During a plant disease survey in the Treasure Valley Region of southwestern Idaho and eastern Oregon, symptoms and signs of rust were observed on leaves of sagebrush in July 2007. Ten of fifteen plants (~70%) observed at the site were infected. Leaf samples of sagebrush with rust were also collected from a hedge in a home garden in Canyon County, ID in May 2006 and September 2007. Symptoms on both samples included cinnamon-brown, raised uredinia, primarily on the adaxial leaf surfaces. Initially, sori were scattered, increasing in density and becoming confluent. Urediniospores were thick walled, subglobose to obovoid, golden brown, echinulate, with three +/– equatorial germ pores, and measured 28 to 32 × 23 to 27 μm. Telia appeared late in the season (July to August) and were mostly scattered, becoming confluent and forming raised, ovoid, brown-to-dark red streaks on leaves and stems. Teliospores were brown to dark red, two-celled, averaging 45 × 26 μm, thick walled (average 0.75 to 1.5 μm), thickening at the apex, ellipsoid to broadly ellipsoid, with thin-walled, hyaline pedicels, 26 to 31 μm broad at attachment, tapering below, equal to or up to twice as long as the spore. On the basis of morphology, this pathogen was identified as Puccinia similis Ellis & Everh. (2), an autoecious rust previously reported from Arizona and Wyoming on A. tridentata and A. nova A. Nels. (3). To confirm the identification of the specimens from Idaho, an ~1,000 bp of DNA from the ribosomal 28S large subunit was amplified and sequenced with rust-specific primers (1) (GenBank No. GU168942). Since there are no sequences of P. similis available in GenBank for comparison, a sequence of the same gene was also obtained from a specimen of P. similis that had been collected on A. cana Pursh in Utah in 1995 by C. T. Rogerson and deposited in the U.S. National Fungus Collections (BPI 863644; GenBank No. GU168943). The sequences shared 100% identity and did not match any other species of rust in GenBank. To our knowledge, this is the first report of P. similis in Idaho and Oregon on sagebrush, and the first report, based on herbarium data, of this rust on A. cana in Utah. Voucher specimens from Idaho have been deposited in BPI (878064) and the Bernard Lowy Mycological Herbarium (LSUM). References: (1) M. C. Aime. Mycoscience 47:112, 2006. (2) G. B. Cummins. Rust Fungi on Legumes and Composites in North America. University of Arizona Press, Tucson, 1978. (3) D. F. Farr et al. Fungal Databases. Systematic Botany and Mycology Laboratory, Online publication. USDA-ARS, 8 July 2009. (4) B. L. Welch and C. Criddle, USDA Forest Service Res. Pap. RMRS-RP-40. 2003.

Dispersal and Germination of Big Sagebrush (Artemisia tridentata) Seeds

Weed Science ◽  
1989 ◽  
Vol 37 (2) ◽  
pp. 201-206 ◽  
Author(s):  
James A. Young ◽  
Raymond A. Evans
Keyword(s):  
Seed Dispersal ◽  
Surface Soil ◽  
Artemisia Tridentata ◽  
Low Density ◽  
Big Sagebrush ◽  
Seed Maturity ◽  
Shrub Canopy

The purpose of this study was to investigate seed dispersal and germination of seeds in the soil as factors in establishment of big sagebrush seedlings. Seed dispersal began at seed maturity in December. Under the shrub canopy the dispersal of seeds was greater to the east. Between shrubs the dispersal of seeds tended to be uniform. For 6 months of each year there were no detectable germinable seeds in the litter and surface soil at the sites sampled. Germinable seeds in the soil increased rapidly during seed dispersal but were not detected by June of the next season. Enrichment of bioassay samples with GA3or KNO3did not enhance emergence of big sagebrush seedlings. Big sagebrush seedlings were found at very low densities in areas previously burned in wildfires. This suggests the presence of viable big sagebrush seeds in the soil at a very low density.

Narrow hybrid zone between two subspecies of big sagebrush (Artemisia tridentata: Asteraceae)

Oecologia ◽  
2001 ◽  
Vol 126 (2) ◽  
pp. 239-246 ◽  
Author(s):  
John H. Graham ◽  
E. Durant McArthur ◽  
D. Carl Freeman
Keyword(s):  
Hybrid Zone ◽  
Artemisia Tridentata ◽  
Big Sagebrush

scholarly journals Differences in Big Sagebrush (Artemisia tridentata) Plant Stature along Soil-Water Gradients: Genetic Components

1986 ◽  
Vol 39 (2) ◽  
pp. 147 ◽  
Author(s):  
Jerry R. Barker ◽  
Cyrus M. McKell
Keyword(s):  
Soil Water ◽  
Artemisia Tridentata ◽  
Big Sagebrush ◽  
Genetic Components ◽  
Plant Stature ◽  
Water Gradients

Challenges of Establishing Big Sagebrush (Artemisia tridentata) in Rangeland Restoration: Effects of Herbicide, Mowing, Whole-Community Seeding, and Sagebrush Seed Sources

2015 ◽  
Vol 68 (5) ◽  
pp. 432-435 ◽  
Author(s):  
Martha M. Brabec ◽  
Matthew J. Germino ◽  
Douglas J. Shinneman ◽  
David S. Pilliod ◽  
Susan K. McIlroy ◽  
...  
Keyword(s):  
Artemisia Tridentata ◽  
Big Sagebrush ◽  
Seed Sources ◽  
Rangeland Restoration

Mowing Wyoming Big Sagebrush (Artemisia tridentata ssp. wyomingensis) Cover Effects Across Northern and Central Nevada

2016 ◽  
Vol 69 (5) ◽  
pp. 360-372 ◽  
Author(s):  
Sherman R. Swanson ◽  
John C. Swanson ◽  
Peter J. Murphy ◽  
J. Kent McAdoo ◽  
Brad Schultz
Keyword(s):  
Artemisia Tridentata ◽  
Big Sagebrush ◽  
Wyoming Big Sagebrush

Inheritance of hydrocarbons in subspecific big sagebrush (Artemisia tridentata) hybrids

1994 ◽  
Vol 22 (7) ◽  
pp. 689-697 ◽  
Author(s):  
D.J. Weber ◽  
D.R. Gang ◽  
S.C. Halls ◽  
B.N. Smith ◽  
E.D. McArthur
Keyword(s):  
Artemisia Tridentata ◽  
Big Sagebrush

Natural and Artificial Hybridization between Big Sagebrush (Artemisia tridentata) Subspecies

1988 ◽  
Vol 79 (4) ◽  
pp. 268-276 ◽  
Author(s):  
E. D. McArthur ◽  
B. L. Welch ◽  
S. C. Sanderson
Keyword(s):  
Artemisia Tridentata ◽  
Artificial Hybridization ◽  
Big Sagebrush

Abiotic and biotic influences on Bromus tectorum invasion and Artemisia tridentata recovery after fire

2011 ◽  
Vol 20 (4) ◽  
pp. 597 ◽  
Author(s):  
Lea Condon ◽  
Peter J. Weisberg ◽  
Jeanne C. Chambers
Keyword(s):  
Bromus Tectorum ◽  
Structural Equation Models ◽  
Abiotic Factors ◽  
Artemisia Tridentata ◽  
Canopy Cover ◽  
Tree Canopy ◽  
Herbaceous Species ◽  
Tree Canopy Cover ◽  
Negative Effect ◽  
Species Cover

Native sagebrush ecosystems in the Great Basin (western USA) are often invaded following fire by exotic Bromus tectorum (cheatgrass), a highly flammable annual grass. Once B. tectorum is established, higher fire frequencies can lead to local extirpation of Artemisia tridentata ssp. vaseyana (mountain big sagebrush) and have cascading effects on sagebrush ecosystems and the species that depend on them. We conducted a landscape-scale observational study to examine the distribution and cover of B. tectorum and A. tridentata 6 years after a large wildland fire. We used structural equation models to quantify the interacting influences of pre-fire tree canopy cover, perennial species cover, distance from potential seed source, and site environment on post-fire cover of B. tectorum and A. tridentata. Results confirmed a hypothesised negative effect of pre-fire tree canopy cover on post-fire cover of A. tridentata. Site- and landscape-level abiotic factors influenced pre-fire tree canopy cover, which, in turn, influenced the probability of rapid recovery to A. tridentata. However, B. tectorum cover was primarily influenced by a positive effect of incident solar radiation and a negative effect of perennial herbaceous species cover. Restoration efforts to reduce tree canopy cover should be limited to productive sites with sufficient cover of perennial herbaceous species to facilitate site recovery.

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