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פותח על ידי קלירמאש פתרונות בע"מ -
Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development
Year:
2014
Source of publication :
Movement Ecology
Authors :
אסולין, שמואל
;
.
Volume :
2
Co-Authors:
Thompson, S.E., UC Berkeley, Department of Civil and Environmental Engineering, 661 Davis Hall, Berkeley, CA, United States
Assouline, S., A R O - Volcani Center, Soil, Water and Environmental Sciences, Bet Dagan, Israel
Chen, L., Desert Research Center, Division of Hydrologic Sciences, Las Vegas, NV, United States
Trahktenbrot, A., Duke University, Nicholas School of the Environment, Box 90328, Durham, NC, United States
Svoray, T., Ben-Gurion University of the Negev, Geography and Environmental Development, Be'er Sheva, Israel
Katul, G.G., Duke University, Nicholas School of the Environment, Box 90328, Durham, NC, United States, Duke University, Pratt School of Engineering, Durham, NC, United States
Facilitators :
From page:
To page:
(
Total pages:
1
)
Abstract:
Seed dispersal alters gene flow, reproduction, migration and ultimately spatial organization of dryland ecosystems. Because many seeds in drylands lack adaptations for long-distance dispersal, seed transport by secondary processes such as tumbling in the wind or mobilization in overland flow plays a dominant role in determining where seeds ultimately germinate. Here, recent developments in modeling runoff generation in spatially complex dryland ecosystems are reviewed with the aim of proposing improvements to mechanistic modeling of seed dispersal processes. The objective is to develop a physically-based yet operational framework for determining seed dispersal due to surface runoff, a process that has gained recent experimental attention. A Buoyant OBject Coupled Eulerian - Lagrangian Closure model (BOB-CELC) is proposed to represent seed movement in shallow surface flows. The BOB-CELC is then employed to investigate the sensitivity of seed transport to landscape and storm properties and to the spatial configuration of vegetation patches interspersed within bare earth. The potential to simplify seed transport outcomes by considering the limiting behavior of multiple runoff events is briefly considered, as is the potential for developing highly mechanistic, spatially explicit models that link seed transport, vegetation structure and water movement across multiple generations of dryland plants. © 2014 Thompson et al.; licensee BioMed Central Ltd.
Note:
Related Files :
Eulerian
Lagrangian
modeling
Overland flow
seed dispersal
Semi-arid
עוד תגיות
תוכן קשור
More details
DOI :
10.1186/2051-3933-2-7
Article number:
7
Affiliations:
Database:
סקופוס
Publication Type:
סקירה
;
.
Language:
אנגלית
Editors' remarks:
ID:
25603
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:16
Scientific Publication
Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development
2
Thompson, S.E., UC Berkeley, Department of Civil and Environmental Engineering, 661 Davis Hall, Berkeley, CA, United States
Assouline, S., A R O - Volcani Center, Soil, Water and Environmental Sciences, Bet Dagan, Israel
Chen, L., Desert Research Center, Division of Hydrologic Sciences, Las Vegas, NV, United States
Trahktenbrot, A., Duke University, Nicholas School of the Environment, Box 90328, Durham, NC, United States
Svoray, T., Ben-Gurion University of the Negev, Geography and Environmental Development, Be'er Sheva, Israel
Katul, G.G., Duke University, Nicholas School of the Environment, Box 90328, Durham, NC, United States, Duke University, Pratt School of Engineering, Durham, NC, United States
Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development
Seed dispersal alters gene flow, reproduction, migration and ultimately spatial organization of dryland ecosystems. Because many seeds in drylands lack adaptations for long-distance dispersal, seed transport by secondary processes such as tumbling in the wind or mobilization in overland flow plays a dominant role in determining where seeds ultimately germinate. Here, recent developments in modeling runoff generation in spatially complex dryland ecosystems are reviewed with the aim of proposing improvements to mechanistic modeling of seed dispersal processes. The objective is to develop a physically-based yet operational framework for determining seed dispersal due to surface runoff, a process that has gained recent experimental attention. A Buoyant OBject Coupled Eulerian - Lagrangian Closure model (BOB-CELC) is proposed to represent seed movement in shallow surface flows. The BOB-CELC is then employed to investigate the sensitivity of seed transport to landscape and storm properties and to the spatial configuration of vegetation patches interspersed within bare earth. The potential to simplify seed transport outcomes by considering the limiting behavior of multiple runoff events is briefly considered, as is the potential for developing highly mechanistic, spatially explicit models that link seed transport, vegetation structure and water movement across multiple generations of dryland plants. © 2014 Thompson et al.; licensee BioMed Central Ltd.
Scientific Publication
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