Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development
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
- Authors:
-
- Univ. of California, Davis, CA (United States). Dept. of Civil and Environmental Engineering
- ARO – Volcani Center, Bet Dagan (Israel). Soil, Water and Environmental Sciences
- Desert Research Inst. (DRI), Las Vegas, NV (United States). Division of Hydrologic Sciences
- Duke Univ., Durham, NC (United States). Nicholas School of the Environment
- Univ. of the Negev, Be'er Sheva (Israel). Geography and Environmental Development
- Duke Univ., Durham, NC (United States). Nicholas School of the Environment; Duke Univ., Durham, NC (United States). Pratt School of Engineering
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); USDA; Israel Science Foundation (ISF)
- OSTI Identifier:
- 1629677
- Grant/Contract Number:
- SC0006967; NSF-AGS-1102227; 2011-67003-30222; IS-4374-11C; 1184/11; EAR-1331940; 2013-67021-20947; FI-470-2012
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Movement Ecology
- Additional Journal Information:
- Journal Volume: 2; Journal Issue: 1; Journal ID: ISSN 2051-3933
- Publisher:
- BioMed Central
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; Seed dispersal; Overland flow; Semi-arid; Eulerian; Lagrangian; Modeling
Citation Formats
Thompson, Sally E., Assouline, Shmuel, Chen, Li, Trahktenbrot, Ana, Svoray, Tal, and Katul, Gabriel G. Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development. United States: N. p., 2014.
Web. doi:10.1186/2051-3933-2-7.
Thompson, Sally E., Assouline, Shmuel, Chen, Li, Trahktenbrot, Ana, Svoray, Tal, & Katul, Gabriel G. Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development. United States. https://doi.org/10.1186/2051-3933-2-7
Thompson, Sally E., Assouline, Shmuel, Chen, Li, Trahktenbrot, Ana, Svoray, Tal, and Katul, Gabriel G. Thu .
"Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development". United States. https://doi.org/10.1186/2051-3933-2-7. https://www.osti.gov/servlets/purl/1629677.
@article{osti_1629677,
title = {Secondary dispersal driven by overland flow in drylands: Review and mechanistic model development},
author = {Thompson, Sally E. and Assouline, Shmuel and Chen, Li and Trahktenbrot, Ana and Svoray, Tal and Katul, Gabriel G.},
abstractNote = {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},
doi = {10.1186/2051-3933-2-7},
journal = {Movement Ecology},
number = 1,
volume = 2,
place = {United States},
year = {Thu Apr 17 00:00:00 EDT 2014},
month = {Thu Apr 17 00:00:00 EDT 2014}
}
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Ant mounds as a source of sediment on citrus orchard plantations in eastern Spain. A three-scale rainfall simulation approach
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Research progress on the effects of soil erosion on vegetation
journal, July 2009
- Jiao, Juying; Zou, Houyuan; Jia, Yanfeng
- Acta Ecologica Sinica, Vol. 29, Issue 2
Ombrohydrochory: Rain-operated seed dispersal in plants – With special regard to jet-action dispersal in Aizoaceae
journal, October 2006
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- Flora - Morphology, Distribution, Functional Ecology of Plants, Vol. 201, Issue 7
Tracing of shallow water flows through buoyant fluorescent particles
journal, August 2012
- Tauro, Flavia; Pagano, Christopher; Porfiri, Maurizio
- Flow Measurement and Instrumentation, Vol. 26
Analogies between mineral sediment and vegetative particle dynamics in fluvial systems
journal, September 2007
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- Geomorphology, Vol. 89, Issue 1-2
Can seed removal through soil erosion explain the scarcity of vegetation in the Chinese Loess Plateau?
journal, September 2011
- Jiao, Juying; Han, Luyan; Jia, Yanfeng
- Geomorphology, Vol. 132, Issue 1-2
Spatial organization of vegetation arising from non-local excitation with local inhibition in tropical rainforests
journal, June 2009
- Thompson, Sally; Katul, Gabriel; Terborgh, John
- Physica D: Nonlinear Phenomena, Vol. 238, Issue 13
Integration of airborne lidar and vegetation types derived from aerial photography for mapping aboveground live biomass
journal, June 2012
- Chen, Qi; Vaglio Laurin, Gaia; Battles, John J.
- Remote Sensing of Environment, Vol. 121
Automatic near real-time selection of flood water levels from high resolution Synthetic Aperture Radar images for assimilation into hydraulic models: A case study
journal, September 2012
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Seed losses by surface wash in degraded Mediterranean environments
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Post-fire Seed Dispersal and Species Re-establishment in Proteaceous Heath
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Plant Propagation Fronts and Wind Dispersal: An Analytical Model to Upscale from Seconds to Decades Using Superstatistics
journal, April 2008
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- The American Naturalist, Vol. 171, Issue 4
Seed Preferences in Sparrow Species of the Monte Desert, Argentina: Implications for Seed-Granivore Interactions
journal, April 2006
- Cueto, Víctor R.; Marone, Luis; de Casenave, Javier Lopez
- The Auk, Vol. 123, Issue 2
Remote sensing imagery in vegetation mapping: a review
journal, March 2008
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Works referencing / citing this record:
A synthesis of empirical plant dispersal kernels
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