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Titolo:
Ecological life history of the facultative woodland biennial Arabis laevigata variety laevigata (Brassicaceae): survivorship
Autore:
Bloom, TC; Baskin, JM; Baskin, CC;
Indirizzi:
Univ Kentucky, Sch Biol Sci, Lexington, KY 40506 USA Univ Kentucky Lexington KY USA 40506 ch Biol Sci, Lexington, KY 40506 USA Univ Kentucky, Dept Agron, Lexington, KY 40546 USA Univ Kentucky Lexington KY USA 40546 Dept Agron, Lexington, KY 40546 USA
Titolo Testata:
JOURNAL OF THE TORREY BOTANICAL SOCIETY
fascicolo: 2, volume: 128, anno: 2001,
pagine: 93 - 108
SICI:
1095-5674(200104/06)128:2<93:ELHOTF>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
SAND-DUNE SYSTEM; THISTLE CARDUUS-NUTANS; VERBASCUM-THAPSUS; ROSETTE SIZE; POPULATION-DYNAMICS; REPRODUCTION; GERMINATION; DEMOGRAPHY; SURVIVAL; BIOLOGY;
Keywords:
Arabis laevigata var. laevigata; desiccation and survival; herbivory and survival; life tables; plant litter and survival; survivorship curves; woodland "biennial";
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Baskin, JM Univ Kentucky, Sch Biol Sci, Lexington, KY 40506 USA Univ Kentucky Lexington KY USA 40506 , Lexington, KY 40506 USA
Citazione:
T.C. Bloom et al., "Ecological life history of the facultative woodland biennial Arabis laevigata variety laevigata (Brassicaceae): survivorship", J TORREY B, 128(2), 2001, pp. 93-108

Abstract

(1.2)THOMAS C. BLOOM, (1)JERRY M. BASKLN, AND (1.3)CAROL C. BASKIN ('School Of Biological Sciences, University of Kentucky, Lexington, Kentucky 40506-0225, (2)1209 Glade Street, College Station, TX 77840, and 'Department of Agronomy, University of Kentucky, Lexington, KY 40546-0091). Ecological life history of the facultative woodland biennial Arabis laevigata variety laevigata (Brassicaceae): survivorship. J. Torrey Bet. Sec. 128:000-000. 2001.- Survivorship was studied over an 8.5-year period in a population of the facultative biennial Arabis laevigata var, laevigata in a rocky deciduous woodland (Scott's: Grove) in northcentral Kentucky, where most individuals of this species are associated with rook outcrops. Of the 2,269 seedlings marked in 1986 and 814 in 1987, only 101 (4.5%) and 35 (4.3%), respectively, survived 1 year, and only 24 (0.78%) of the 3,083 plants bolted before theydied. In a separate study, only about 63% of the plants that bolted produced seeds. Thus, only about 15 (0.49%) of the 3,083 plants marked as seedlings in 1986 and 1987 actually reproduced. Cohorts: exhibited a Deevey Type III survivorship curve. Small plants had a greater probability of dying thanlarge ones. Survival was higher in microsites ton and near rock outcrops) with a thin, patchy leaf litter than in those with a moderate leaf cover; plants were not found in sites with a thick and persistent litter cover. Rosette herbivory also was a cause of mortality. Plants at Scott's Grove may flower in their second, third, fourth, fifth, or even a later year of life. Survivorship of A. laevigata in its woodland rock outcrop habitat is similar to that of facultative biennials of various other habitat types.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 21:13:10