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References (3)
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J. Singh, W. Lauenroth, D. Milchunas (1983)
Geography of grassland ecosystemsProgress in Physical Geography, 7
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D. Janzen (1970)
Herbivores and the Number of Tree Species in Tropical ForestsThe American Naturalist, 104
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A. Soriano (1960)
Germination of twenty dominant plants in Patagonia in relation to regeneration of the vegetation.
- Publisher
- Brill
- Copyright
- Copyright © Koninklijke Brill NV, Leiden, The Netherlands
- ISSN
- 0792-9978
- DOI
- 10.1080/0021213X.1986.10677044
- Publisher site
- See Article on Publisher Site
Abstract
In a plant community of the arid steppe, structurally characterized by shrubs encircled by grasses and scattered tussocks with bare soil patches interspersed, the hypothesis of differential seedling survival in differentially protected microsites was tested. Seeds of Bromus setifolius were placed in the soil at two different depths and in two different microhabitats: leeward of a shrub and bare soil patch. No changes were recorded in the germination rate treatments. However, seadling survival under shrub protection was lower than in bare soil patches. Higher soil water potential in bare soil patchesprobably due to smaller root biomass of established grassesappeared to be the major determinant of the higher survival rate observed. A model based on seed density and seedling survival is proposed for seedling recruitment in relation to distance from the mother plant. The promotion of seedling establishment in the best suited microhabitats is visualized as a possible means of enhancing recovery of vegetation.
Journal
Israel Journal of Plant Sciences – Brill
Published: May 13, 1986