Probabilities of Survival and Reproduction Relative to Rosette Size in the Common Burdock (Arctium minus: Compositae)

Gross, Ronald S.; Werner, Patricia A.

doi:10.2307/2425529

Cited by 31 publications

(13 citation statements)

References 15 publications

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“…12 The plant can be found in many states within the United States and is also common in southern Canada. 13 Burdock is believed to have a high content of vitamins and minerals, may be taken internally, and is available in diverse preparations including pills, tinctures, teas, or dried roots. 12 Although the B & W Ointment and LT are commonly used in the Anabaptist communities, they are rarely noted in the medical literature.…”

Section: Common Burdockmentioning

confidence: 99%

Treatment of Burns with Burns & Wounds (B & W) Ointment and Leaf Therapy

Main

Williams

Jones

2012

The Journal of Alternative and Complementary Medicine

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Section: Common Burdockmentioning

confidence: 99%

Treatment of Burns with Burns & Wounds (B & W) Ointment and Leaf Therapy

Main

Williams

Jones

2012

The Journal of Alternative and Complementary Medicine

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“…A number of studies show that many perennial species must attain a minimum size before flower induction can occur (Gross and Werner 1983, Samson and Werk 1986, Weiner 1988, Tang 1990, Thompson et al 1991, Schmid andWeiner 1993). A number of studies show that many perennial species must attain a minimum size before flower induction can occur (Gross and Werner 1983, Samson and Werk 1986, Weiner 1988, Tang 1990, Thompson et al 1991, Schmid andWeiner 1993).…”

Section: Introductionmentioning

confidence: 99%

“…The induction of flowering is influenced also by factors internal to plants including size and accumulated resources. A number of studies show that many perennial species must attain a minimum size before flower induction can occur (Gross and Werner 1983, Samson and Werk 1986, Weiner 1988, Tang 1990, Thompson et al 1991, Schmid and Weiner 1993. Less well studied are the interactions of plant size with external reproduction-stimulating factors including fire.…”

Section: Introductionmentioning

confidence: 99%

Episodic Reproduction in Two Fire-Prone Palms, Serenoa repens and Sabal etonia (Palmae)

Abrahamson¹

1999

Ecology

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Ecological Society of America is collaborating with JSTOR to digitize, preserve and extend access to Ecology.Abstract. This study examined how fire events affected the flowering of two native palms in a fire-prone environment. By examining how flowering varied across vegetative associations, I determined whether plant size or mass influenced flowering, whether canopy openness or increased soil fertility following fire enhanced flowering, and whether potential flowering stimuli interacted. Individuals of the widespread Serenoa repens and narrow endemic Sabal etonia were monitored (for a total of 9900 plant-year records) for growth performance and reproduction in flatwoods, scrubby flatwoods, scrub, and sandhill that were affected by single or multiple fires. In addition, clipping, fertilizing, and clip-ping+fertilizing experiments were conducted in three vegetative associations to simulate the effects of fire in order to ascertain which stimuli and their interactions encouraged flowering episodes. Both species exhibited marked resiliency to fire, rapidly resprouting from extensive underground stores. The frequencies of leaf production and flowering increased dramatically following fire in all vegetative associations compared to preburn periods, but especially in long-unburned (>60 yr) associations with substantial preburn overstory canopies. Strong episodic flowering responses were triggered after each of three repeated burns conducted during an 8-yr period at a previously long-unburned sandhill. Size, and hence estimated mass, were significant predictors of whether a palm would flower and, if so, how much it flowered. The loss of a palm's crown by fire, or by clipping, stimulated flowering, but this effect was mediated by light availability. Palms under more complete overstory canopies flowered less than those in light gaps or at open-canopied stands. Fertilization of palms, intended to simulate greater postfire nutrient availabilities, did not stimulate flowering. Logistic regression models were developed for each palm species to estimate the probability of flowering in each vegetative association. These models accurately predicted flowering and nonflowering individuals. However, probability-of-flowering models that were generalized across vegetative associations for each species were less accurate than the association-specific models, which suggests the specific nature of flowering responses. These long-lived palms are well adapted to fire but are highly vulnerable to humancaused disturbance because of their very limited ability to recolonize former habitats. 1 Send reprint requests to this address. species, flower initiation requires exposure to a temperature threshold for a g...

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“…Several authors deal with the real life span and the influence of environmental factors on the ontogeny of species, which are commonly characterized as biennials (e.g. Baskin & Baskin 1979;Klemow & Raynal I98 1, 1985;Boormann & Fuller 1984;Gross & Werner 1985, Jong et al 1987Jong & Klinkhamer 1988;Kelly 1989). Some authors showed, that a strict biennial life cycle occurs in very few species and that the life span may vary greatly, depending on environmental factors.…”

Section: Discussionmentioning

confidence: 99%

Growth forms of biennial and pluriennial vascular plants in central Europe

Krumbiegel¹

1999

Nordic Journal of Botany

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The growth forms of bi‐ and pluriennial central European plant species were analyzed and summarized systematically by means of a dichotomous key. Ten growth forms are distinguished according to vegetative morphological characters of the plants: holoparasitic erosulate, (simple) erosulate, floating semirosette, succulent semirosette, tufted semirosette, (simple) semirosette, storage root semirosette, tuber semirosette, storage root rosette, and (simple) rosette bi‐ or pluriennial plants. Only very few species are strictly biennial or pluriennial. Each individual plant can be assigned to only one growth form system according to the life span (the system of bi‐and pluriennials in the present case). However, several species include individuals that behave as annuals as well as biennials/pluriennials and/or periennials. The term “hapaxanthic” is discussed concerning to its reference level in relation to the plant organism. Three types of hapaxanthy can be distinguished in this context: Genet hapaxanthy with and without vegetative reproduction and ramet hapaxanthy.

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Probabilities of Survival and Reproduction Relative to Rosette Size in the Common Burdock (Arctium minus: Compositae)

Cited by 31 publications

References 15 publications

Treatment of Burns with Burns & Wounds (B & W) Ointment and Leaf Therapy

Treatment of Burns with Burns & Wounds (B & W) Ointment and Leaf Therapy

Episodic Reproduction in Two Fire-Prone Palms, Serenoa repens and Sabal etonia (Palmae)

Growth forms of biennial and pluriennial vascular plants in central Europe

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