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פותח על ידי קלירמאש פתרונות בע"מ -
Countervailing effects on pine and oak leaf litter decomposition in human-altered Mediterranean ecosystems
Year:
2015
Source of publication :
Oecologia
Authors :
פרבולוצקי, אבי
;
.
Volume :
177
Co-Authors:
Sheffer, E., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Canham, C.D., Cary Institute of Ecosystem Studies, Box AB, Millbrook, NY, United States
Kigel, J., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Perevolotsky, A., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Agricultural Research Organization—The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
1039
To page:
1051
(
Total pages:
13
)
Abstract:
Species affect the dynamics of litter decay through the intrinsic properties of their litter, but also by influencing the environmental conditions imposed by their canopy, roots, and litter layers. We examined how human-induced changes in the relative abundances of two dominant Mediterranean trees—Pinus halepensis and Quercus calliprinos—impact leaf litter decomposition. A reciprocal transplant experiment tested decomposition of pine, oak, and mixed leaf litter in oak woodland and pine forest ecosystems with different relative abundances of pine and oak. Using likelihood methods, we tested the importance and magnitude of the environmental effects of local species abundance, litter layer composition, and soil properties on litter mass loss. Oak litter decomposition was slower than pine, and had an antagonistic effect on mixed litter decay. These results differ from other reported pine–oak associations, and are probably associated with a higher content of tannins and phenols in oak compared to pine litter in our study sites. The environmental effects of the two species were opposite to their litter decomposition dynamics. An increased proportion of pine in the oak woodlands and a higher content of pine needles in the litter layer of pine forests reduced decay rates. The presence of more oak and broadleaf litter in the litter layer accelerated decomposition in pine forests. Our results highlight the importance of considering multidimensional species effects mediated by both chemical and physical properties, and imply that man-made changes in the composition and configuration of plant communities may result in complex unpredicted consequences to ecosystem biogeochemistry. © 2015, Springer-Verlag Berlin Heidelberg.
Note:
Related Files :
chemistry
forest
Mediterranean Region
phenols
pine
Pinus
Pinus halepensis
Quercus
soil
trees
עוד תגיות
תוכן קשור
More details
DOI :
10.1007/s00442-015-3228-3
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
23812
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:02
You may also be interested in
Scientific Publication
Countervailing effects on pine and oak leaf litter decomposition in human-altered Mediterranean ecosystems
177
Sheffer, E., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Canham, C.D., Cary Institute of Ecosystem Studies, Box AB, Millbrook, NY, United States
Kigel, J., The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot, Israel
Perevolotsky, A., Department of Agronomy and Natural Resources, Institute of Plant Sciences, Agricultural Research Organization—The Volcani Center, Bet Dagan, Israel
Countervailing effects on pine and oak leaf litter decomposition in human-altered Mediterranean ecosystems
Species affect the dynamics of litter decay through the intrinsic properties of their litter, but also by influencing the environmental conditions imposed by their canopy, roots, and litter layers. We examined how human-induced changes in the relative abundances of two dominant Mediterranean trees—Pinus halepensis and Quercus calliprinos—impact leaf litter decomposition. A reciprocal transplant experiment tested decomposition of pine, oak, and mixed leaf litter in oak woodland and pine forest ecosystems with different relative abundances of pine and oak. Using likelihood methods, we tested the importance and magnitude of the environmental effects of local species abundance, litter layer composition, and soil properties on litter mass loss. Oak litter decomposition was slower than pine, and had an antagonistic effect on mixed litter decay. These results differ from other reported pine–oak associations, and are probably associated with a higher content of tannins and phenols in oak compared to pine litter in our study sites. The environmental effects of the two species were opposite to their litter decomposition dynamics. An increased proportion of pine in the oak woodlands and a higher content of pine needles in the litter layer of pine forests reduced decay rates. The presence of more oak and broadleaf litter in the litter layer accelerated decomposition in pine forests. Our results highlight the importance of considering multidimensional species effects mediated by both chemical and physical properties, and imply that man-made changes in the composition and configuration of plant communities may result in complex unpredicted consequences to ecosystem biogeochemistry. © 2015, Springer-Verlag Berlin Heidelberg.
Scientific Publication
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