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Keyword: competition

Native generalist consumers interact strongly with seeds of the invasive wild cucumber (Echinocystis lobata)

Publications Posted on: October 02, 2020
When alien plant species arrive in a new environment, they develop novel interactions with native biota that can range from negative to positive. Determining the nature and strength of these interactions is integral to understanding why some aliens are suppressed and others become highly invasive pests.

A review and evaluation of factors limiting northern goshawk populations

Publications Posted on: March 04, 2020
Northern Goshawk (Accipiter gentilis) populations are suspected of declining due to forest management treatments that alter the range of environmental conditions beneficial to their reproduction and survival. To develop effective goshawk conservation strategies, information on intrinsic and extrinsic factors that influence goshawk fitness is required.

The ecology, history, ecohydrology, and management of pinyon and juniper woodlands in the Great Basin and Northern Colorado Plateau of the western United States

Publications Posted on: January 30, 2020
This synthesis reviews current knowledge of pinyon and juniper ecosystems, in both persistent and newly expanded woodlands, for managers, researchers, and the interested public. We draw from a large volume of research papers to centralize information on these semiarid woodlands. The first section includes a general description of both the Great Basin and northern Colorado Plateau.

Long-term vegetation recovery and invasive annual suppression in native and introduced postfire seeding treatments

Publications Posted on: May 16, 2019
Seed mixes used for postfire seeding in the Great Basin are often selected on the basis of short-term rehabilitation objectives, such as ability to rapidly establish and suppress invasive exotic annuals (e.g., cheatgrass, Bromus tectorum L.). Longer-term considerations are also important, including whether seeded plants persist, continue to suppress invasives, and promote recovery of desired vegetation.

Reduced mycorrhizal responsiveness leads to increased competitive tolerance in an invasive exotic plant

Publications Posted on: December 14, 2017
1. Arbuscular mycorrhizal (AM) fungi can exert a powerful influence on the outcome of plant–plant competition. Since some exotic plants interact differently with soil biota such as AM fungi in their new range, range-based shifts in AM responsiveness could shift competitive interactions between exotic and resident plants, although this remains poorly studied. 2.

Long-term precommercial thinning effects on Larix occidentalis (western larch) tree and stand characteristics

Publications Posted on: June 23, 2017
Precommercial thinning (PCT) is used to increase tree size and shorten harvest rotation time. Short-term results from PCT studies often show a trade-off between individual-tree growth and net stand yield, while longer-term effects of PCT on tree growth and stand yield are less well documented.

The tortoise and the hare: Can the slow native plant win?

Science Spotlights Posted on: May 03, 2017
It has been suggested that exotic plants will be more successful than native plant species as a result of climate change. This is because exotics often exhibit stronger responses to disturbance, faster growth rates, and greater plasticity. In this study, we show that climate change can actually shift the balance in favor of natives when it creates conditions that favor the slower more "tortoise-like" strategies of some natives.

The tortoise and the hare: Reducing resource availability shifts competitive balance between plant species

Publications Posted on: April 14, 2017
Determining how changes in abiotic conditions influence community interactions is a fundamental challenge in ecology. Meeting this challenge is increasingly imperative in the Anthropocene where climate change and exotic species introductions alter abiotic context and biotic composition to reshuffle natural systems.

Postfire drill-seeding of Great Basin plants: Effects of contrasting drills on seeded and nonseeded species

Publications Posted on: September 15, 2016
Objectives of postfire seeding in the Great Basin include reestablishment of perennial cover, suppression of exotic annual weeds, and restoration of diverse plant communities. Nonconventional seeding techniques may be required when seeding mixes of grasses, forbs, and shrubs containing seeds of different sizes.

The effect of snowmobile trails on coyote movements within lynx home ranges

Publications Posted on: January 19, 2016
Coyotes (Canis latrans) and Canada lynx (Lynx canadensis) are sympatric throughout much of the lynx’s southern range. Researchers and managers have suggested that the presence of compacted snowmobile trails may allow coyotes to access lynx habitat from which they were previously excluded by deep, unconsolidated snow.