1. General Model Information
Name: Western Bays Landscape Spatial Simulation
Main medium: aquatic+terrstrial
Main subject: Habitat succession, other, hydrology, population dynamics
Organization level: Landscape, Ecosystem
Type of model: partial differential equations (finite differences,2D)
Main application: research, decision support/expert system, education
Keywords: Atchafalaya River (Louisiana, USA), deltaic habitats growth and colonization, response to multiple impacts
Dept. of Geology and Geophysics, University of New Orleans, New Orleans LA 70148 USA
Phone: 504 280 6790
Fax: 504 280 7396
Jay F. Martin, G. Paul Kemp, Enrique Reyes, Hassan Mashriqui, and John W. Day.
The Western Bays Landscape Spatial Simulation (WBLSS) is a spatially explicit
landscape model that integrates physical and biological processes to examine
how variations of natural material inputs combined with different management
approaches can affect habitat distribution in the Atchafalaya and Wax Lake
deltas in Louisiana, USA. Distinguishing characteristics for this landscape
model is a land building algorithm to account of long-term changes in active
deltas. The WBLSS incorporates hydrological, geological, and meteorological
forces across a spatial grid to simulate ecosystem dynamics for 70 year periods
over 9,000 km2 of swamps, marshes and open water. The models were
used to predict the survival of marshes with accelerated sea level rise and
altered riverine inputs. Management scenarios that isolated deltaic wetlands
from the river resulted in rapid deterioration of the delta. With increased
riverine input these same wetlands were sustained even with accelerated rates!
of sea level rise. This spatial model can predict effects of complex
interactions, over lengthy time periods and across entire landscapes.
The results demonstrate that by sustaining and restoring marsh coverage,
the maintenance and restoration of natural riverine inputs is a sustainable
approach to address present and future deterioration of deltaic ecosystems.
Yearly maps for the calibration and scenario runs can be seen as color
animations on our web site: www.lsu.edu/aeg.
II. Technical Information
Operating System(s): UNIX/LINUX
Programming Language(s): FORTRAN
daily precipitation, daily wind direction and velocity, hourly tides, daily river discharges
III. Mathematical Information
Reyes E., M.L. White, J.F. Martin, G.P. Kemp, J.W. Day, V. Aravamuthan. 2000. Landscape Modeling of Coastal Habitat Change in the Mississippi Delta. Ecology. 81(8): 2331-2349.
Martin, J.F., M.L. White, E. Reyes, G.P. Kemp, J.W. Day, H. Mashriqui. 2000. Evaluation of Coastal Management Plans with a Spatial Model: Mississippi Delta, Louisiana, USA. Environmental Management. 26(2): 117-129.
Martin, J.F., E. Reyes, G.P. Kemp, J.W. Day, H. Mashriqui. 2002. Landscape Modeling of the Mississippi Delta. BioScience. 52(4): 357-365.
V. Further information in the World-Wide-Web
VI. Additional remarks
Last review of this document by: : Wed Oct 16 20:28:30 2002
Status of the document: Contributed by Enrique Reyes
last modified by
Joachim Benz Thu Oct 24 17:43:55 CEST 2002