Applying a complex, general ecosystem model (EDYS) in large-scale land management

Childress, W. Michael; Coldren, Cade; McLendon, Terry

doi:10.1016/s0304-3800(01)00504-x

Cited by 24 publications

(16 citation statements)

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“…For example, Diffendorfer et al (2001) presented the spatially heterogeneous ecosystem model covering different freshwater habitat types in the Everglades to model changing patterns of biomass, energy flux, and species composition by. Other mechanistic models that simulate ecosystem processes are the Ecological Dynamic Simulation Model (EDYS) by Childress et al (2002) and the mechanistic Everglades Landscape Model by Fitz et al (2004).…”

Section: Resultsmentioning

confidence: 99%

Temporal trajectories of phosphorus and pedo-patterns mapped in Water Conservation Area 2, Everglades, Florida, USA

2008

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Section: Resultsmentioning

confidence: 99%

Temporal trajectories of phosphorus and pedo-patterns mapped in Water Conservation Area 2, Everglades, Florida, USA

2008

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“…All of these factors make it very difficult for the pattern-based models (first type) to predict the underlying ecological processes. Therefore, the process-based models (second type) are more widely used (Childress et al, 2002;Schaldach and Alcamo, 2006;Ferrier and Drielsma, 2010). The process-based models propose a series of driving forces in the assumptions and synthetically consider the interactions between the landscape elements and process parameters (such as soil properties or climatic features), as well as the interactions among specific processes of various landscape elements (surface runoff or species competition).…”

Section: Integrated Modeling Of Patterns and Processesmentioning

confidence: 99%

Landscape ecology: Coupling of pattern, process, and scale

Liang

Lü

2011

Chin. Geogr. Sci.

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Landscape ecology provides new theoretical frameworks and methodologies for understanding complex ecological phenomena at multiple scales. Studies of landscape ecology focus on understanding the dynamics of ecological patterns and processes, and highlight the integration of multiple disciplines. In this paper, we discussed the problems and challenges that landscape ecology is currently facing, emphasizing the limitations of current methods used to describe dynamic landscape patterns and processes. We suggested that the focus should be on the integration of ground-based observation, mobile monitoring, transect survey, and remote-sensing monitoring, as well as improved coupling of experimental and model simulations. In addition, we outlined the research frontiers in landscape ecology, including scaling, integrated pattern and process modeling, and regional synthesis. Lastly, a brief review of pattern-process-scale coupling studies in China was provided. We concluded by pointing out that pattern-process-scale interactions, correlations between natural, economic, and social processes, and the coupling of human and natural systems will be major research areas in landscape ecology in the future.

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“…LM is currently exploring improvements that would better simulate the response of the cover water balance and source loading to ecological change and land management practices (Peterson 2004). Recommendations include integrating an ecological model such as TerreSIM (MFG 2003) or EDYS (Childress et al 2002), and replacing the existing water balance accounting model with a deterministic unsaturated flow code such as HYDRUS-2D (Simunek et al 1999) or UNSAT-H (Fayer 2000).…”

Section: Mass Balance Research Needs and Research Supportmentioning

confidence: 99%

Mass Balance: a Key to Advancing Monitored and Enhanced Attenuation for Chlorinated Solvents

Looney¹,

Vangelas²,

Adams³

et al. 2006

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Sections 7 and 8 summarize the evaluation in terms of research and development directions and broad goals.Section 9 provides the references for the report.Finally, the appendices provide supplemental information and mathematical derivations to support Sections 4 and 6. The appendices are intended to provide sufficient detail to allow interested readers to better follow and replicate the evaluation and to facilitate technical review and discussion.The process of systematically disassembling and then reassembling a "contaminant plume" -in terms of loading and attenuation capacity -provided useful insights and promising directions to specifically improve implementation of natural attenuation, and generally improve environmental management and legacy management decision-making. source zone aqueous concentration at time zero, mass/volume C (x,y,z,t) concentration at a specific target location and specified time, mass/volume LIST OF TABLES LIST OF CASE STUDIESCase LIST OF ACRONYMS KEY DEFINITIONS Enhancement, Enhanced AttenuationAn enhancement is any type of intervention in a contaminated system that decreases contaminant loading or increases the magnitude of attenuation by natural processes beyond that which occurs without intervention. Enhanced attenuation is the result of applying an enhancement that sustainably manipulates a natural attenuation process leading to an overall reduction in mass flux of contaminants. Integrated Mass Flux (iMF), Loading, DischargeThe integrated mass flux is the total quantity of a migrating substance that moves through a planar transect that is within the system of interest and oriented perpendicular to the direction of movement. If the transect is at the entry point to the system the integrated mass flux is the loading. If the transect is at the exit point from the system, the integrated mass flux is the discharge. Note that these terms have units of mass per time (e.g., Kg/yr, g/day or the like) and they represent an extension of the traditional engineering definition of flux (e.g., Kg/yr/m 2 ) in which the transect area is accounted for to allow mass balance calculation of plume or system scale behavior.Monitored Natural Attenuation "'Monitored natural attenuation' …refers to the reliance on natural attenuation processes (within the context of a carefully controlled and monitored clean-up approach) to achieve sitespecific remedial objectives within a time frame that is reasonable compared to that offered by other more active methods. The 'natural attenuation processes' that are at work in such a remediation approach include a variety of physical, chemical, or biological processes that, under favorable conditions, act without human intervention to reduce mass, toxicity, mobility, volume, or concentration of contaminants in soil or groundwater." (EPA, 1999; pg. 3) Attenuation Capacity (A c )The attenuation capacity is the general term that describes the amount of a contaminant that can be assimilated and attenuated within an identified subsurface system volume. It is the compos...

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Applying a complex, general ecosystem model (EDYS) in large-scale land management

Cited by 24 publications

References 1 publication

Temporal trajectories of phosphorus and pedo-patterns mapped in Water Conservation Area 2, Everglades, Florida, USA

Temporal trajectories of phosphorus and pedo-patterns mapped in Water Conservation Area 2, Everglades, Florida, USA

Landscape ecology: Coupling of pattern, process, and scale

Mass Balance: a Key to Advancing Monitored and Enhanced Attenuation for Chlorinated Solvents

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