3 Works

Woody encroachment happens via intensification, not extensification, of species ranges in an African savanna

Yong Zhou, Morgan Tingley, Madelon Case, Corli Coetsee, Gregory Kiker, Rheinhardt Scholtz, Freek Venter & Carla Staver
Widespread woody encroachment is a prominent concern for savanna systems as it is often accompanied by losses in productivity and biodiversity. Extensive ecosystem-level work has advanced our understanding of its causes and consequences. However, there is still debate over whether local management can override regional and global drivers of woody encroachment, and it remains largely unknown how encroachment influences woody community assemblages. Here, we examined species-level changes in woody plant distributions and size structure from...

Germination and epiphytic seed fungi on Festuca roemeri and Danthonia californica

Bitty Roy, Hunter C. Mackin & Tiffany E Thornton
Demographic studies measure drivers of plant fecundity such as seed production and survival, but few address environmental drivers of seed viability, such as germination and dormancy. Variation in climate and seed type may both directly and indirectly alter seed germination via altered fungal pathogen abundance. We examined seed germination and microbial communities of seeds of Danthonia californica, which are either chasmogamous (external, wind-pollinated) or cleistogamous (internal, self-fertilized) and Festuca roemeri, which are solely chasmogamous. Seed...

Climate warming threatens the persistence of a community of disturbance-adapted native annual plants

Paul Reed, Scott Bridgham, Laurel Pfeifer-Meister, Megan Peterson, Bart Johnson, Bitty Roy, Graham Bailes, Aaron Nelson, William Morris & Daniel Doak
With ongoing climate change, populations are expected to exhibit shifts in demographic performance that will alter where a species can persist. This presents unique challenges for managing plant populations and may require ongoing interventions, including in-situ management or introduction into new locations. However, few studies have examined how climate change may affect plant demographic performance for a suite of species, or how effective management actions could be in mitigating climate change effects. Over the course...

Registration Year

  • 2021
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  • Dataset
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Affiliations

  • University of Oregon
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  • Duke University
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  • University of Colorado Boulder
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  • University of California Los Angeles
    1