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Keyword: germination

Viability of Blackbrush seed (Coleogyne ramosissima Torr. [Rosaceae]) following long-term storage

Publications Posted on: September 07, 2012
Blackbrush (Coleogyne ramosissima Torr. [Rosaceae]) is a landscape- dominant shrub that occurs in an ecotonal band between warm and cold deserts of the western US. This vegetation type is at considerable risk from stand-replacing wildfires due to the introduction of exotic annual grasses.

Germination response of prairie dropseed and hairy goldaster to stratification and temperature

Publications Posted on: September 07, 2012
The unique vegetation assemblage of the Black Hills in conjunction with the frequent occurrence of natural and anthropogenic disturbances emphasizes the need to use locally adapted native species in a wide variety of restoration efforts. However, a general lack of information regarding germination and propagation requirements for most native plant species has restricted their usage.

Seed biology of rush skeletonweed in sagebrush steppe

Publications Posted on: June 06, 2012
Rush skeletonweed (Chondrilla juncea L.) is an invasive, herbaceous, long-lived perennial species of Eurasian or Mediterranean origin now occurring in many locations throughout the world. In the United States, it occupies over 2.5 million ha of rangeland in the Pacific Northwest and California.

Shrub-steppe species germination trials and survival after outplanting on bare soils

Publications Posted on: February 27, 2012
Work has been initiated to restore native vegetation on the soil and base gravel layers that were once underneath constructed facilities at the Umatilla Chemical Depot (UMCD) in eastern Oregon. Propagules were collected from native plant species found around the UMCD. Germination success ranged from 0% to 75% for the species tested.

Overcoming dormancy and enhancing germination of Sphaeralcea munroana seeds

Publications Posted on: January 19, 2012
The results of a series of experiments involving a variety of dormancy-breaking treatments indicate that Munro's globemallow [Sphaeralcea munroana (Douglas) Spach] seeds are physically dormant, possess a cap-like structure in the occlusion of the water gap, which inhibits imbibition, and can be artificially dislodged through boiling water scarification.

Restoration strategies for a native perennial: Germination and seedling physiology of Sphaeralcea munroana

Publications Posted on: October 04, 2011
The Great Basin region of the western United States has undergone significant disturbance and fragmentation because of overgrazing for livestock production, disruption of the natural fire regimes, and the introduction of non-native species. At present, habitat loss greatly surpasses the rate of system recovery, making restoration integral to ecosystem function and resilience.

Capsule treatments to enhance seedling emergence of Gaura neomexicana ssp

Publications Posted on: October 04, 2011
Management of riparian vegetation is difficult because these communities are frequently impacted by herbivores, invasive weeds, and altered hydrologic regimes. Multiple and intertwined factors affecting rare species recruitment are particularly difficult to identify. Gaura neomexicana ssp. coloradensis Munz (Gaura) is a short-lived perennial forb endemic to riparian areas in mixed-grass prairies of Wyoming, Nebraska, and Colorado, U.S.A.

Impact of the pathogen Pyrenophora semeniperda on Bromus tectorum seedbank dynamics in North American cold deserts

Publications Posted on: October 03, 2011
Bromus tectorum is a dominant winter annual weed in cold deserts of western North America. We followed patterns of seed carry-over and abundance of the pathogen Pyrenophora semeniperda over 5 years at B. tectorum-dominated shadscale (Atriplex confertifolia) and sagebrush (Artemisia tridentata) sites in southern Idaho.

When Smokey says "No": Fire-less methods for growing plants adapted to cultural fire regimes

Publications Posted on: April 08, 2011
Two culturally-significant plants (sweetgrass [Anthoxanthum nitens] and beargrass [Xerophyllum tenax]) are used as case studies for investigating methods of restoring plant populations that are adapted to indigenous burning practices without using fire. Reports from tribal members that the plants of interest were declining in traditional gathering areas provided the impetus for research with both species.

Germination characteristics of prairie dropseed, blanketflower, and hairy goldaster in response to prechill and temperature treatments

Publications Posted on: March 17, 2011
Native plant materials centers across the United States create concentrated sources of native species seeds, cuttings, and plants that are readily available for use in restoration, landscaping, and other revegetation projects.