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Titolo:
Phenology of Quercus ithaburensis with emphasis on the effect of fire
Autore:
Kaplan, D; Gutman, M;
Indirizzi:
Nat Reserves Author, IL-13111 Safed, Israel Nat Reserves Author Safed Israel IL-13111 Author, IL-13111 Safed, Israel Agr Res Org, Dept Nat Resources, IL-50250 Bet Dagan, Israel Agr Res Org Bet Dagan Israel IL-50250 ources, IL-50250 Bet Dagan, Israel
Titolo Testata:
FOREST ECOLOGY AND MANAGEMENT
fascicolo: 1, volume: 115, anno: 1999,
pagine: 61 - 70
SICI:
0378-1127(19990308)115:1<61:POQIWE>2.0.ZU;2-M
Fonte:
ISI
Lingua:
ENG
Soggetto:
PATTERN; HABIT;
Keywords:
Q-ithaburensis (Tabor oak); grazing intensity; fire; acorns; oak phenology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Kaplan, D Nat Reserves Author, POB 1143, IL-13111 Safed, Israel Nat Reserves Author POB 1143 Safed Israel IL-13111 afed, Israel
Citazione:
D. Kaplan e M. Gutman, "Phenology of Quercus ithaburensis with emphasis on the effect of fire", FOREST ECOL, 115(1), 1999, pp. 61-70

Abstract

Observations on the phenology of Quercus ithaburensis were carried out during three consecutive years in Yahudia Nature Reserve, Israel. Bud-break occurred mostly in February with minor bud breaks in March-April, May and September-October. Trees shed leaves in October through January with a peak inDecember-January, but even during these months at least 10% of the trees remained evergreen. Branch growth took place during February-April. Sheddingof 1-year old branches was recorded in half of the observations, accompanied by the formation of abscission tissue. Acorns generally began to ripen in November and shedding extended from December until January. The percentage of acorns attaining full ripeness Varied considerably from branch to branch and from year to year, reaching approx. 20% of the number of acorns found in May. Ripe acorns appeared exclusively on 2-year old branches. The degree of fire damage to trees greatly depended on the intensity of the fire, which in rum depended on weather conditions, quantity of dry pasture vegetation, and the location of the tree relative to cairns. Most trees were located within cairns, which constituted insulation belts, as no herbaceous vegetation grows on them. The effect of grazing intensity was decisive to the extent that fire damaged trees. Reduction of the bulk of dry pasture vegetation, affected the number of trees harmed, both as to their revival and their re-budding potential. Heavy grazing reduced to nearly half the number of toes suffering damage. After an early summer fire, budding was monitored, but not after a late summer fire. (C) 1999 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/09/20 alle ore 10:50:03