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קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Managing cattle grazing and overstorey cover for the conversion of pine monocultures into mixed Mediterranean woodlands
Year:
2015
Source of publication :
Applied Vegetation Science
Authors :
אוסם, יגיל
;
.
משה, יוסי
;
.
Volume :
18
Co-Authors:
Osem, Y., Department of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet-Dagan, Israel
Fogel, T., The Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, PO Box 12, Rehovot, Israel
Moshe, Y., Department of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet-Dagan, Israel
Brant, S., Central Forest Region, KKL, PO Box 190, Yokneam, Israel
Facilitators :
From page:
261
To page:
271
(
Total pages:
11
)
Abstract:
Question: A large proportion (70%) of coniferous forest area in Israel is used for livestock grazing. Recently, the possibility of managing these monospecific plantations to form mixed conifer-broad-leaved woodlands via natural regeneration processes has been considered. In light of this we pose the question, how does the interaction of cattle grazing and overstorey thinning (hereafter, thinning) affect natural regeneration in east Mediterranean pine plantations? Location: Menashe region, Mediterranean Israel (rainfall = 600 mm·yr-1). Methods: The experiment was carried out in a mature (50 yr) Pinus brutia plantation. Ten plots (0.25 ha) were selected, representing thinned (five plots, ≈100 trees·ha-1, leaf area index, LAI≈3) and non-thinned (five plots, ≈230 trees·ha-1, LAI≈6) forest patches. Paired 100-m2 subplots were positioned within each plot, one of which was fenced to exclude cattle grazing while the other remained available for grazing. Recruitment, growth and shoot water potential of pines and broad-leaved tree species were measured after 10 yr of grazing exclusion. Results: The density of newly emerged (up to 3-mo-old) pine seedlings was decreased by thinning but not affected by grazing. However, pine sapling (established seedlings) density and height were increased by thinning and decreased by grazing. Sapling density of the dominant native oak Quercus ithaburensis was reduced by both thinning and grazing. Thinning enhanced the growth of Q. ithaburensis saplings while grazing restricted their height. Grazing and thinning had no significant effect on the total sapling density of broad-leaved tree species, but grazing restricted their height and reduced species richness. Grazing reduced topsoil water content in non-thinned plots but had no effect in the thinned plots. Grazing increased the water potential of pine seedlings while thinning reduced it. Both grazing and thinning had no effect on the water potential of mature Pistacia lentiscus shrubs. Conclusions: Natural regeneration within east Mediterranean pine plantations is limited by both dense overstorey cover and cattle grazing. While grazing exclusion is necessary for the establishment and early growth of recruits, reintroduction of grazing at later phases may facilitate the development of young forests by controlling competition. © 2014 International Association for Vegetation Science.
Note:
Related Files :
Bos
Exclosures
Natural regeneration
Pinus brutia
Pistacia lentiscus
Quercus ithaburensis
silviculture
Understorey
עוד תגיות
תוכן קשור
More details
DOI :
10.1111/avsc.12152
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20484
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:37
You may also be interested in
Scientific Publication
Managing cattle grazing and overstorey cover for the conversion of pine monocultures into mixed Mediterranean woodlands
18
Osem, Y., Department of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet-Dagan, Israel
Fogel, T., The Faculty of Agriculture, Food and Environment, Hebrew University of Jerusalem, PO Box 12, Rehovot, Israel
Moshe, Y., Department of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet-Dagan, Israel
Brant, S., Central Forest Region, KKL, PO Box 190, Yokneam, Israel
Managing cattle grazing and overstorey cover for the conversion of pine monocultures into mixed Mediterranean woodlands
Question: A large proportion (70%) of coniferous forest area in Israel is used for livestock grazing. Recently, the possibility of managing these monospecific plantations to form mixed conifer-broad-leaved woodlands via natural regeneration processes has been considered. In light of this we pose the question, how does the interaction of cattle grazing and overstorey thinning (hereafter, thinning) affect natural regeneration in east Mediterranean pine plantations? Location: Menashe region, Mediterranean Israel (rainfall = 600 mm·yr-1). Methods: The experiment was carried out in a mature (50 yr) Pinus brutia plantation. Ten plots (0.25 ha) were selected, representing thinned (five plots, ≈100 trees·ha-1, leaf area index, LAI≈3) and non-thinned (five plots, ≈230 trees·ha-1, LAI≈6) forest patches. Paired 100-m2 subplots were positioned within each plot, one of which was fenced to exclude cattle grazing while the other remained available for grazing. Recruitment, growth and shoot water potential of pines and broad-leaved tree species were measured after 10 yr of grazing exclusion. Results: The density of newly emerged (up to 3-mo-old) pine seedlings was decreased by thinning but not affected by grazing. However, pine sapling (established seedlings) density and height were increased by thinning and decreased by grazing. Sapling density of the dominant native oak Quercus ithaburensis was reduced by both thinning and grazing. Thinning enhanced the growth of Q. ithaburensis saplings while grazing restricted their height. Grazing and thinning had no significant effect on the total sapling density of broad-leaved tree species, but grazing restricted their height and reduced species richness. Grazing reduced topsoil water content in non-thinned plots but had no effect in the thinned plots. Grazing increased the water potential of pine seedlings while thinning reduced it. Both grazing and thinning had no effect on the water potential of mature Pistacia lentiscus shrubs. Conclusions: Natural regeneration within east Mediterranean pine plantations is limited by both dense overstorey cover and cattle grazing. While grazing exclusion is necessary for the establishment and early growth of recruits, reintroduction of grazing at later phases may facilitate the development of young forests by controlling competition. © 2014 International Association for Vegetation Science.
Scientific Publication
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