Annual Species in Native Prairies of South Puget Sound, Washington

Dunwiddie, Peter W.; Alverson, Edward R.; Martin, Rebecca A.; Gilbert, Rod

doi:10.3955/046.088.0205

Cited by 14 publications

(27 citation statements)

References 12 publications

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“…Our inability to detect a positive increase in native annual forbs is likely due to this group's near eradication from the prairie landscape (Dunwiddie et al 2006, Dunwiddie et al 2014. If more species were present in this group, it is likely that post-fire patterns would mirror exotic annual forbs (Dunwiddie et al 2014). This is also likely the case for native perennial grass, which has a low overall richness in the ecoregion (<15 species; Dunwiddie et al 2006).…”

Section: Discussionmentioning

confidence: 91%

“…The newly exposed soil found after severe late summer fires provides excellent germination conditions for disturbance-adapted annual species (such as Teesdalia nudicaulis [L.] W.T. Aiton) that are ubiquitous after hotter burns (Dunwiddie et al 2014). This post-fire flush is composed primarily of exotic perennial and annual species, which are typically the first to germinate and are often more abundant compared to later germinating native species (Stanley et al 2011).…”

Section: Discussionmentioning

confidence: 99%

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Ignition Patterns Influence Fire Severity and Plant Communities in Pacific Northwest, USA, Prairies

Martin

Hamman

2016

fire ecol

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Ignition Patterns Influence Fire Severity and Plant Communities in Pacific Northwest, USA, Prairies

Martin

Hamman

2016

fire ecol

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“…While forbs native to the oak savanna ecosystem typically establish well following fire (Maret & Wilson ; Dunwiddie et al ), it is often unclear whether fire plays a role in determining the potential for a species' persistence. For example, P. congesta (the only annual species seeded in this experiment) had the highest establishment success overall (Stanley et al ), particularly in burn treatments, but there was very low persistence after eight growing seasons, and where persistence did occur, it was unrelated to initial disturbance treatment.…”

Section: Discussionmentioning

confidence: 99%

“…A. millefolium, E. lanatum, and R. occidentalis (all perennial species) also had greater initial establishment success in plots with a burn treatment (Stanley et al 2010), but, in contrast with P. congesta, the long-term persistence and abundance of these species was positively associated with burn treatments. These contrasting trends between life forms contribute to the recently studied issue of loss of native annual forbs throughout the prairie system in the absence of fire (Dunwiddie et al 2014). If fire is indeed what promotes establishment of many forbs, the perennial species likely gain enough benefit from a single burn (after which point they can persist relatively well without disturbance), while the viability of annual forb populations remains more deeply dependent on the repeated influence of fire.…”

Section: Persistence and Spread Of Seeded Native Speciesmentioning

confidence: 99%

Long‐term effects of prairie restoration on plant community structure and native population dynamics

Trowbridge

Stanley

Kaye³

et al. 2016

Restoration Ecology

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The key to restoring degraded grassland habitats is identifying feasible and effective techniques to reduce the negative impacts of exotic species and promote self‐sustaining native populations. It is often difficult to extend monitoring of restoration efforts to evaluate long‐term success, but doing so is essential to understanding how initial outcomes change over time. To assess how initial treatment effects persist, we revisited degraded patches of Pacific Northwest prairie habitat 6 years after experimental restoration efforts ceased. We evaluated plant community composition to determine the lasting effects of supplemental native seeding and disturbance treatments (burning, mowing, and herbicide to reduce exotic species). We tracked the persistence of seeded species and measured spread of their populations to evaluate suitability of species for restoration and the ability of the habitat to support native plant populations. We found that plots that received supplemental seeding continued to exhibit higher richness of native species than those left unseeded, and that both seeding and disturbance treatments could positively influence native species abundance over the long term. The initially observed effects of disturbance treatments on reducing exotic grass abundance had diminished, highlighting the importance of long‐term monitoring and ongoing control of exotic species. Nevertheless, these treatments significantly influenced the population trajectories of 4 out of 8 seeded native species. There was evidence of spatial advance of most seeded species. Results from extended monitoring confirm that dispersal limitation of native species and difficulties maintaining the reduction of exotic grasses continue to be major barriers to success in restoration of invaded grasslands.

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“…Dealing with old and disparate data is difficult, since we can have no control over the design or implementation of the sampling (Dunwiddie et al . 2014). It is important to acknowledge several significant limitations that hamper our ability to quantify the decline.…”

Section: Difficulties and Frustrations Of Dealing With Old Survey Datamentioning

confidence: 99%

The forgotten annual forbs of Victoria’s basalt plains grassland

Sinclair¹,

Scott-Walker²,

Batpurev³

et al. 2021

Eco Management Restoration

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Comparison of historical data with recent surveys of grasslands across Victoria's basalt plain reveals a substantial decline in native annual forbs. Eleven of the 35 species once common in this ecosystem have not been recorded for decades. The near loss of a lifeform from an ecosystem should ring alarm bells, but it seems the warning has passed largely unnoticed. Is this due to shifting baseline syndrome'? What has caused this quiet decline in biodiversity, and what does it teach us about management and restoration?

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Annual Species in Native Prairies of South Puget Sound, Washington

Cited by 14 publications

References 12 publications

Ignition Patterns Influence Fire Severity and Plant Communities in Pacific Northwest, USA, Prairies

Ignition Patterns Influence Fire Severity and Plant Communities in Pacific Northwest, USA, Prairies

Long‐term effects of prairie restoration on plant community structure and native population dynamics

The forgotten annual forbs of Victoria’s basalt plains grassland

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