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פותח על ידי קלירמאש פתרונות בע"מ -
Soil seed bank and seedling emergence of Sarcopoterium spinosum as affected by grazing in a patchy semiarid shrubland
Year:
2007
Source of publication :
Israel Journal of Plant Sciences
Authors :
אוסם, יגיל
;
.
פרבולוצקי, אבי
;
.
Volume :
55
Co-Authors:
Osem, Y., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Volcani Center, Bet Dagan 50250, Israel
Konsens, I., Robert Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Perevolotsky, A., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Volcani Center, Bet Dagan 50250, Israel
Kigel, J., Robert Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Facilitators :
From page:
35
To page:
43
(
Total pages:
9
)
Abstract:
The regeneration and patch dynamics of Sarcopoterium spinosum shrubs may have profound effects on rangeland productivity in Mediterranean semiarid shrublands. Yet little is known about the role of the soil seed bank in seedling recruitment of S. spinosum and whether grazing has any effect on the size and spatial distribution of its seed bank and seedling emergence. We studied the effects of sheep grazing on the soil seed bank and seedling emergence of S. spinosum in a Mediterranean semiarid shrubland in the northern Negev Desert in Israel. The variation in density of the seed bank in autumn and of seedling emergence in the spring was measured during two years, beneath shrub canopies and in the open space matrix, inside and outside exclosures that prevented sheep grazing. Seed density beneath the shrubs ranged between 2000 and 3000 seeds m-2, and was about ten times as great as that in the adjacent open space patches. Moreover, beneath the shrubs, the proportion of the autumn seed bank that emerged as seedlings in the spring was three times as great as in the open space patches. Grazing caused a 60% increase in soil seed bank density beneath the shrub canopy but had no effect on the seed bank in the open space patches. Variation in spring seedling density between grazing treatments and patch types was strongly related to the availability of seeds in the previous autumn. © 2007 Science From Israel / LPPLtd.
Note:
Related Files :
Grazing
Israel
Mediterranean
Negev
Sarcopoterium spinosum
Seedling establishment
shrub
Shrubland
עוד תגיות
תוכן קשור
More details
DOI :
10.1560/IJPS.55.1.35
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27861
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:34
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Scientific Publication
Soil seed bank and seedling emergence of Sarcopoterium spinosum as affected by grazing in a patchy semiarid shrubland
55
Osem, Y., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Volcani Center, Bet Dagan 50250, Israel
Konsens, I., Robert Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Perevolotsky, A., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Volcani Center, Bet Dagan 50250, Israel
Kigel, J., Robert Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel
Soil seed bank and seedling emergence of Sarcopoterium spinosum as affected by grazing in a patchy semiarid shrubland
The regeneration and patch dynamics of Sarcopoterium spinosum shrubs may have profound effects on rangeland productivity in Mediterranean semiarid shrublands. Yet little is known about the role of the soil seed bank in seedling recruitment of S. spinosum and whether grazing has any effect on the size and spatial distribution of its seed bank and seedling emergence. We studied the effects of sheep grazing on the soil seed bank and seedling emergence of S. spinosum in a Mediterranean semiarid shrubland in the northern Negev Desert in Israel. The variation in density of the seed bank in autumn and of seedling emergence in the spring was measured during two years, beneath shrub canopies and in the open space matrix, inside and outside exclosures that prevented sheep grazing. Seed density beneath the shrubs ranged between 2000 and 3000 seeds m-2, and was about ten times as great as that in the adjacent open space patches. Moreover, beneath the shrubs, the proportion of the autumn seed bank that emerged as seedlings in the spring was three times as great as in the open space patches. Grazing caused a 60% increase in soil seed bank density beneath the shrub canopy but had no effect on the seed bank in the open space patches. Variation in spring seedling density between grazing treatments and patch types was strongly related to the availability of seeds in the previous autumn. © 2007 Science From Israel / LPPLtd.
Scientific Publication
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