Title of article :
Effects of litter, soil surface conditions, and microhabitat on Cercocarpus ledifolius Nutt. Seedling emergence and establishment
Author/Authors :
Inés Ib??ez، نويسنده , , Eugene W. Schupp، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2002
Pages :
13
From page :
209
To page :
221
Abstract :
We assessed the effects of the litter layer, soil surface conditions, and microhabitat on emergence of the tree Cercocarpus ledifolius, and how litter affected establishment and survival of first year seedlings of this species. Natural seedling emergence was similar in three microhabitats: open interspaces (0.12kg litter m−2), beneath Artemisia tridentata canopies (0.27kg litter m−2), and beneath C. ledifolius canopies (2.5kg litter m−2). However, because seed dispersal is highest under trees, and lowest in the open, seedling emergence seemed to vary and have highest values in open interspaces. Emergence rates did not vary between soil surface treatments, but were lower in experimental litter treatments than in treatments, without litter, independent of microhabitat. In contrast, litter beneath trees favored subsequent seedling establishment and survival. This study shows that the role of the litter layer varies during the first year of the life of this species, with litter inhibiting initial emergence but enhancing early seedling survival
Keywords :
Cercocarpus ledifolius , Litter , Microhabitat , seedling emergence , seedling survival , seed–seedling conflict
Journal title :
Journal of Arid Environments
Serial Year :
2002
Journal title :
Journal of Arid Environments
Record number :
763068
Link To Document :
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