caa a22 4500 475751256 CHVBK 20180406123524.0 cr unu---uuuuu 170329e20000201xx s 000 0 eng 10.1023/A:1009860227886 doi (NATIONALLICENCE)springer-10.1023/A:1009860227886 Vetaas Ole Botanical Institute, Allégt. 41, N-5007, Bergen, Norway aut The effect of environmental factors on the regeneration of Quercus semecarpifolia Sm. in Central Himalaya, Nepal [Elektronische Daten] [Ole Vetaas] Poor regeneration of oak forest has been observed in north America and Eurasia. In the Himalaya it has mainly been explained by anthropogenic pressures. This study analyses the regeneration of two Quercus semecarpifolia Sm. forests (2-3000m a.s.l.), where one forest has almost nil disturbance and the other has different degrees of canopy disturbance. The relationships between biotic and abiotic environmental variables and the number of Quercus semecarpifolia seedlings and saplings (i.e., recruits <10cm Diameter at Breast Height (DBH)) were analysed by means of Generalized Additive Models (GAM). The two forests were compared with respect to size-class distributions of mature trees (i.e., >10cm DBH), and the number of recruits. The size-class distributions indicate that regeneration is most reliable in the nearly undisturbed forest. Most recruits were found under high canopy cover and high potential radiation. Canopy disturbance has a negative effect on the number of seedlings. Seedlings seem to prefer a pH of around 6, Loss-on-Ignition between 20 and 30%, and total nitrogen between 2 and 3%. In general, there were very few plots with saplings, and there was not a clear relationship between the number of saplings and the soil variables. The size-class diagrams indicate a lack of young trees in the disturbed forest, and it is hypothesized that fire may inhibit recruits reaching the canopy phase. Kluwer Academic Publishers, 2000 Canopy disturbance nationallicence Himalaya nationallicence Lopping nationallicence Regeneration niche nationallicence Size-class distribution nationallicence Plant Ecology Kluwer Academic Publishers 146/2(2000-02-01), 137-144 1385-0237 146:2<137 2000 146 11258 https://doi.org/10.1023/A:1009860227886 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1009860227886 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Vetaas Ole Botanical Institute, Allégt. 41, N-5007, Bergen, Norway aut NATIONALLICENCE 773 0- Plant Ecology Kluwer Academic Publishers 146/2(2000-02-01), 137-144 1385-0237 146:2<137 2000 146 11258 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer