Growth Form and Reproductive Effort in Goldenrods (Solidago, Compositae)

Abrahamson, Warren G.; Gadgil, Madhav

doi:10.1086/282864

Cited by 285 publications

(128 citation statements)

References 7 publications

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“…Both goldenrod (Solidago: Asteraceae) and dandelion (Taraxacum: Asteraceae) have been shown to decrease their allocation to reproduction and increase growth along a successional gradient, as sites become less-disturbed and populations more density-dependent (Gadgil and Solbrig, 1972;Abrahamson and Gadgil, 1973). Scheiner (1989) found directional fecundity selection in Danthonia spicata, a perennial bunchgrass, but mortality exerted stabilizing selection on this character.…”

Section: Discussionmentioning

confidence: 99%

GENETICS OFBRASSICA CAMPESTRIS. 1. GENETIC CONSTRAINTS ON EVOLUTION OF LIFE-HISTORY CHARACTERS

Dorn

Mitchell‐Olds

1991

Evolution

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Abstract.-Energy allocation arguments suggest a possible tradeoff between timing and magnitude of reproduction: plants that postpone reproduction may accumulate greater resources and consequently produce more offspring. However, early reproduction may be favored when adult mortality is high. Tradeoffs among life-history characters may be a consequence of constraints imposed by genetic and environmental covariation among traits. In this paper we examine the genetic basis of the relationship between timing and magnitude of reproduction in an annual plant, Brassica campestris, by selecting to change flowering date and plant size in each of four directions (early and large, late and large, early and small, or late and small). There is a strong positive relationship between flowering date and flowering height. The response to selection was greatest along the axis of positive genetic covariation. Populations may evolve to become early flowering and small or late flowering and tall, but there is little response for the alternative combinations of characters. In this instance, the constraints imposed by quantitative genetics are in striking accord with predictions that might be made on physiological, energetic, or ecological grounds.

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Section: Discussionmentioning

confidence: 99%

GENETICS OFBRASSICA CAMPESTRIS. 1. GENETIC CONSTRAINTS ON EVOLUTION OF LIFE-HISTORY CHARACTERS

Dorn

Mitchell‐Olds

1991

Evolution

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“…Typically, aboveground biomass is distributed in the order wood > branches > bark > leaves (CURLIN, 1970). Variations in biomass distribution across different plant organs differ from one species to another and even within the same species (ABRAHAMSON;GADGIL, 1973).…”

Section: Watzlawick L F Et Almentioning

confidence: 99%

Aboveground stock of biomass and organic carbon in stands of Pinus taeda L.

Watzlawick

Caldeira

Godinho

et al. 2013

CERNE

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This study aimed to estimate biomass and organic carbon in stands of Pinus taeda L. at different ages (14, 16, 19, 21, 22, 23 and 32 years) and located in the municipality of General Carneiro (PR). In order to estimate biomass and organic carbon in different tree components (needles, live branches, dead branches, bark and stem wood), the destructive quantification method was used in which seven trees from each age category were randomly sampled across the stand. Stocks of biomass and organic carbon were found to vary between the different age categories, mainly as a result of existing dissimilarities between ages in association with forest management practices such as thinning, pruning and tree density per hectare.Key words: Nonnative forests, sustainability, forest stand. (14, 16, 19, 21, 22, 23 BIOMASSA E CARBONO ORGÂNICO ACIMA DO SOLO EM PLANTIOS DE Pinus taeda L. RESUMO: Objetivou-se estimar a biomassa e carbono orgânico em plantios de Pinus taeda L. com diferentes idades

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“…virgaurea L. (Nilson 1976). Beaudry and Chabot (1957) (Newell and Tramer 1978) and 25 yr old (Werner 1976), increasing with age of habitat to l2Vo for S. canaderzsis in a virgin, tall-grass prairie (Werner 1979 Hurlben (19'70), Abrahamson and Gadgil (1973), Werner and Platt (1976), Werner (1976, t979 (Abrahamson 1977 …”

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confidence: 99%