Soil Patterns in Three Darlingtonia Fens of Southwestern Oregon

Tolman, Deborah A.

doi:10.3375/0885-8608(2007)27[374:spitdf]2.0.co;2

Cited by 4 publications

(6 citation statements)

References 23 publications

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“…No nonnative species were detected in any of the fens. The complete lack of nonnatives and annuals (except H. anagalloides ) in our sites is in agreement with past studies of Darlingtonia fens (Cramer, 2005; Tolman, 2007).…”

Section: Resultssupporting

confidence: 93%

“…For instance, Cramer (2005) documented a 80% reduction in tree cover and a 94% reduction in shrub cover. Given the minimal effects of fire we observed in relatively open vegetation, a strong focus on the potential effects of encroachment by woody plants in future work is warranted (see also Tolman, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Darlingtonia fens have several features that similarly may lead to dampened fire effects on vegetation, including their nutrient‐poor serpentine parent material and low productivity. Fen soils in our study area contain exceptionally low concentrations of nitrogen (Franklin, 2009; see also Tolman, 2007), and they support generally open (or absent) canopies (Cramer, 2005). In addition, fens are dominated by rhizomatous perennial species (Frost et al, 2004; Cramer, 2005) that may quickly regenerate aboveground biomass after fire.…”

mentioning

confidence: 87%

“…Fed by perennial sources of cool water, these serpentine wetlands, or “ Darlingtonia fens,” remain moist during summer, a time when upland vegetation experiences a prolonged dry season of approximately 5 mo. The constant moisture in fens results in continually saturated soils that allow for little aerobic decomposition, leading to accumulations of decomposed organic matter (peat or muck) with limited available nutrient content (Tolman, 2007; Sawyer et al, 2008; Franklin, 2009). Besides providing habitat for D. californica , fens support small, isolated populations of several rare and regionally uncommon mesophytic plant species, such as Gentiana setigera A.…”

mentioning

confidence: 99%

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Influence of fire on a rare serpentine plant assemblage: A 5‐year study of Darlingtonia fens

Jules

Ellison

Gotelli

et al. 2011

American J of Botany

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Section: Resultssupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 87%

mentioning

confidence: 99%

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Influence of fire on a rare serpentine plant assemblage: A 5‐year study of Darlingtonia fens

Jules

Ellison

Gotelli

et al. 2011

American J of Botany

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“…Fire Summary. We reviewed the results of 21 fire studies in serpentine vegetation (Coombes and Forst, 1956;Wells, 1962;Miller, 1981;Knox, 1984;Borhidi, 1988;Parker, 1990;Tyndall, 1992Tyndall, , 1994Takaoka and Sasa, 1996;McCoy et al, 1999;Arabas, 2000;Matos Mederos and Torres Bilbao, 2000;Chiarucci et al, 2001;Chiarucci, 2003;Harrison et al, 2003;Safford and Harrison, 2004;CAPO, 2007;Tolman, 2007;Safford, 2008;EBRPD, 2009;Reddy et al, 2009). Only four studies provided quantitative data on the effects of fire on local diversity (McCoy et al, 1999;Matos Mederos and Torres Bilbao, 2000;Harrison et al, 2003;Safford and Harrison, 2004), and only two carried out formal statistical analysis of those effects.…”

Section: Firementioning

confidence: 99%

Disturbance and Diversity in Low-Productivity Ecosystems

Safford¹,

Mallek²

2011

SerpentineThe Evolution and Ecology of a Model System

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Ecological theory predicts that the amount of resources available in an ecosystem should affect its response and sensitivity to ecological disturbances like fire, herbivory, and soil disturbance. Plant stature and life form, biomass, rates of growth, and plant palatability are all influenced by habitat productivity, and these factors play key roles in determining disturbance frequencies and intensities (Pickett and White, 1985; Bond and van Wilgen, 1996; Grime, 2001; Table 12.1). Theory and empirical investigations find that site quality is often related to rates of competitive displacement, with relatively unproductive, less competitive environments less reliant on disturbance for diversity regulation (Huston, 1994; Grime, 2001). Because the most significant direct effect of disturbance on vegetation is to increase available space and light (Grace, 1999), the effects of disturbance on plant diversity should correlate positively with productivity, since more productive plant communities are more limited by above-ground competition (Tilman, 1982). Ecologically, a disturbance of a given intensity will cause more change in space and light availability in dense vegetation than in open habitats, where these resources are already more abundant. On evolutionary time scales, species are less likely to specialize on regenerating after disturbance in communities where space and light are less limiting (Grubb, 1977; Bond and van Wilgen, 1996). Given the great differences in productivity between serpentine and nonserpentine habitats, coupled with the heightened presence of endemics and species of Serpentine: The Evolution and Ecology of a Model System, edited by Susan Harrison and Nishanta Rajakaruna. Copyright  by The Regents of the University of California. All rights of reproduction in any form reserved. table 12.1 "Contextual" Features of Serpentine Soil and Vegetation That Influence the Relationship between Disturbance and Plant Diversity Feature Serpentine Effect Ecosystem structure Stunted vegetation; relatively sparse, heterogeneous plant cover; low stem density and woody plant cover; relatively low biomass; significant areas of exposed soil; low canopy height; greater development of understory vegetation. Resource base Infertile soils with high Mg; low Ca, N, P, and K; high heavy metals (Cr, Ni). Available water capacity (AWC) can be higher or lower than normal soils, but many authors refer to low soil moisture of serpentine soils. Species traits Relatively slow growth rates, compared to conspecifics or congeners on more fertile soils. Stress-tolerant life history strategies common. Many endemic plant species. Serpentine plants often exhibit xeromorphic traits traits such as small, thick, hairy, and/or evergreen foliage. In some regions (mostly humid, warm climates), some species hyperaccumulate heavy metals (Cr, Ni, Co), which may act as an herbivore defense. In California, some evidence of higher palatability of serpentine versus nonserpentine grasses. Root systems often deeper and better-developed than in more f...

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A Chromosome-length Assembly of the Black Petaltail (Tanypteryx hageni) Dragonfly

Tolman

Beatty

Bush

et al. 2022

Preprint

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We present a chromosome-length genome assembly and annotation of the Black Petaltail dragonfly (Tanypteryx hageni). This habitat specialist diverged from its sister species over 70 million years ago, and separated from the most closely related Odonata with a reference genome 150 million years ago. Using PacBio HiFi reads and Hi-C data for scaffolding we produce one of the most high quality Odonata genomes to date. A scaffold N50 of 206.6 Mb and a BUSCO score of 96.8% indicate high contiguity and completeness.SignificanceWe provide a chromosome-length assembly of the Black Petaltail dragonfly (Tanypteryx hageni), the first genome assembly for any non-libelluloid dragonfly. The Black Petaltail diverged from its sister species over 70 million years ago.T. hageni, like its confamilials, occupies fen habitats in its nymphal stage, a life history uncommon in the vast majority of dragonflies. We hope that the availability of this assembly will facilitate research onT. hageniand other petaltail species, to better understand their ecology and support conservation efforts.

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Soil Patterns in Three Darlingtonia Fens of Southwestern Oregon

Cited by 4 publications

References 23 publications

Influence of fire on a rare serpentine plant assemblage: A 5‐year study of Darlingtonia fens

Influence of fire on a rare serpentine plant assemblage: A 5‐year study of Darlingtonia fens

Disturbance and Diversity in Low-Productivity Ecosystems

A Chromosome-length Assembly of the Black Petaltail (Tanypteryx hageni) Dragonfly

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