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פותח על ידי קלירמאש פתרונות בע"מ -
How landscape modulators function: Woody plant impact on seed dispersal and abiotic filtering
Year:
2012
Source of publication :
Plant Ecology
Authors :
פרבולוצקי, אבי
;
.
Volume :
213
Co-Authors:
Gabay, O., Blaustein Institutes for Desert Research, Ben-Gurion University, 84990 Midreshet Sede-Boqer, Israel
Perevolotsky, A., Department of Agronomy and Natural Resources, Agricultural Research Organization, 50250 Bet Dagan, Israel
Shachak, M., Blaustein Institutes for Desert Research, Ben-Gurion University, 84990 Midreshet Sede-Boqer, Israel
Facilitators :
From page:
685
To page:
693
(
Total pages:
9
)
Abstract:
The Mediterranean landscape is characterized by a heterogeneous structure: a mosaic of woody plants (trees or shrubs) with scattered patches of herbaceous vegetation. Although the herbaceous and woody patches are adjacent to each other, plant species composition in them is substantially different. This could be attributed to either differences in environmental conditions between patch types (i. e., abiotic filters), or to dispersal limitations caused by the woody plants acting as dispersal filters. In this article, we focus on the relative impact of woody plants, applying these two filter types, in determining plant species composition in Mediterranean woodland. We experimentally manipulated shade and litter cover and examined the effect of each of these factors on plant species composition. We used seed-traps to evaluate seed arrival in the patches, and experimentally removed the shrub canopy to study the effect of the shrub as a physical barrier to seed entry. Results showed that plant species number and composition were not significantly affected by shade and litter manipulation. The number of trapped seeds were significantly higher in the open patches than in the woody patches, and removal of woody plants increased the number of trapped seeds in both open and woody patches, as a result of eliminating the physical obstacle to free seed movement. Our findings show that woody plants affect the herbaceous plant community by influencing seed dispersal, and highlight that they affect other organisms not only by modifying resource availability but also through the creation of a new landscape structure. © 2012 Springer Science+Business Media B.V.
Note:
Related Files :
ecosystem engineering
Ecosystem engineers
seed dispersal
shrub
woodland
Woody plants
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/s11258-012-0033-5
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27247
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:29
Scientific Publication
How landscape modulators function: Woody plant impact on seed dispersal and abiotic filtering
213
Gabay, O., Blaustein Institutes for Desert Research, Ben-Gurion University, 84990 Midreshet Sede-Boqer, Israel
Perevolotsky, A., Department of Agronomy and Natural Resources, Agricultural Research Organization, 50250 Bet Dagan, Israel
Shachak, M., Blaustein Institutes for Desert Research, Ben-Gurion University, 84990 Midreshet Sede-Boqer, Israel
How landscape modulators function: Woody plant impact on seed dispersal and abiotic filtering
The Mediterranean landscape is characterized by a heterogeneous structure: a mosaic of woody plants (trees or shrubs) with scattered patches of herbaceous vegetation. Although the herbaceous and woody patches are adjacent to each other, plant species composition in them is substantially different. This could be attributed to either differences in environmental conditions between patch types (i. e., abiotic filters), or to dispersal limitations caused by the woody plants acting as dispersal filters. In this article, we focus on the relative impact of woody plants, applying these two filter types, in determining plant species composition in Mediterranean woodland. We experimentally manipulated shade and litter cover and examined the effect of each of these factors on plant species composition. We used seed-traps to evaluate seed arrival in the patches, and experimentally removed the shrub canopy to study the effect of the shrub as a physical barrier to seed entry. Results showed that plant species number and composition were not significantly affected by shade and litter manipulation. The number of trapped seeds were significantly higher in the open patches than in the woody patches, and removal of woody plants increased the number of trapped seeds in both open and woody patches, as a result of eliminating the physical obstacle to free seed movement. Our findings show that woody plants affect the herbaceous plant community by influencing seed dispersal, and highlight that they affect other organisms not only by modifying resource availability but also through the creation of a new landscape structure. © 2012 Springer Science+Business Media B.V.
Scientific Publication
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