EcoService Models Library (ESML)
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Compare EMs
Which comparison is best for me?EM Variables by Variable Role
One quick way to compare ecological models (EMs) is by comparing their variables. Predictor variables show what kinds of influences a model is able to account for, and what kinds of data it requires. Response variables show what information a model is capable of estimating.
This first comparison shows the names (and units) of each EM’s variables, side-by-side, sorted by variable role. Variable roles in ESML are as follows:
- Predictor Variables
    
- Time- or Space-Varying Variables
 - Constants and Parameters
 
 - Intermediate (Computed) Variables
 - Response Variables
    
- Computed Response Variables
 - Measured Response Variables
 
 
EM Variables by Category
A second way to use variables to compare EMs is by focusing on the kind of information each variable represents. The top-level categories in the ESML Variable Classification Hierarchy are as follows:
- Policy Regarding Use or Management of Ecosystem Resources
 - Land Surface (or Water Body Bed) Cover, Use or Substrate
 - Human Demographic Data
 - Human-Produced Stressor or Enhancer of Ecosystem Goods and Services Production
 - Ecosystem Attributes and Potential Supply of Ecosystem Goods and Services
 - Non-monetary Indicators of Human Demand, Use or Benefit of Ecosystem Goods and Services
 - Monetary Values
 
Besides understanding model similarities, sorting the variables for each EM by these 7 categories makes it easier to see if the compared models can be linked using similar variables. For example, if one model estimates an ecosystem attribute (in Category 5), such as water clarity, as a response variable, and a second model uses a similar attribute (also in Category 5) as a predictor of recreational use, the two models can potentially be used in tandem. This comparison makes it easier to spot potential model linkages.
All EM Descriptors
This selection allows a more detailed comparison of EMs by model characteristics other than their variables. The 50-or-so EM descriptors for each model are presented, side-by-side, in the following categories:
- EM Identity and Description
 - EM Modeling Approach
 - EM Locations, Environments, Ecology
 - EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system
 
EM Descriptors by Modeling Concepts
This feature guides the user through the use of the following seven concepts for comparing and selecting EMs:
- Conceptual Model
 - Modeling Objective
 - Modeling Context
 - Potential for Model Linkage
 - Feasibility of Model Use
 - Model Certainty
 - Model Structural Information
 
Though presented separately, these concepts are interdependent, and information presented under one concept may have relevance to other concepts as well.
EM Identity and Description
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                    EM ID
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
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                    EM Short Name
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
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            EnviroAtlas - Natural biological nitrogen fixation | FORCLIM v2.9, Santiam watershed, OR, USA | Pollinators on landfill sites, United Kingdom | Wild bees over 26 yrs of restored prairie, IL, USA | Recreational fishery index, USA | Drag coefficient Laminaria hyperborea | Velma- 6PPD-Q concentrations, Seattle, WA | 
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                    EM Full Name
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            US EPA EnviroAtlas - BNF (Natural biological nitrogen fixation), USA | FORCLIM (FORests in a changing CLIMate) v2.9, Santiam watershed, OR, USA | Pollinating insects on landfill sites, East Midlands, United Kingdon | Wild bee community change over a 26 year chronosequence of restored tallgrass prairie, IL, USA | Recreational fishery index for streams and rivers, USA | Drag coefficient Laminaria hyperborea | VELMA: 6PPD-Quinone stormwater concentrations , Seattle, Washington | 
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                    EM Source or Collection
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
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            US EPA | EnviroAtlas | US EPA | None | None | US EPA | None | US EPA | 
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                    EM Source Document ID
                
             
           
     
    
    
        
    
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    262 ?Comment:EnviroAtlas maps BNF based on a correlation with AET modeled by Cleveland et al. 1999, and modified by land use (% natural vs. ag/developed) within each HUC. AET was modeled using climate and land use parameters (equation from Sanford and Selnick 2013). For full citations of these related models, see below, "Document ID for related EM. | 
        
        
        
    
        
        
            
                
 
    23 ?Comment:Related document ID 22 is a secondary source providing tree species specific parameters in appendix. | 
        
        
        
    
        
        
            389 | 401 | 414 | 424 | 465 | 
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            US EPA Office of Research and Development - National Exposure Research Laboratory | Busing, R. T., Solomon, A. M., McKane, R. B. and Burdick, C. A. | Tarrant S., J. Ollerton, M. L Rahman, J. Tarrant, and D. McCollin | Griffin, S. R, B. Bruninga-Socolar, M. A. Kerr, J. Gibbs and R. Winfree | Lomnicky. G.A., Hughes, R.M., Peck, D.V., and P.L. Ringold | Mendez, F. J. and I. J. Losada | Halama JJ, McKane RB, Barnhart BL, Pettus PP, Brookes AF, Adams AK, Gockel CK, Djang KS, Phan V, Chokshi SM, Graham JJ, Tian Z, Peter KT and Kolodziej,EP | 
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            2013 | 2007 | 2013 | 2017 | 2021 | 2004 | 2024 | 
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            EnviroAtlas - National | Forest dynamics in Oregon landscapes: evaluation and application of an individual-based model | Grassland restoration on landfill sites in the East Midlands, United Kingdom: An evaluation of floral resources and pollinating insects | Wild bee community change over a 26-year chronosequence of restored tallgrass prairie | Correspondence between a recreational fishery index and ecological condition for U.S.A. streams and rivers. | An empirical model to estimate the propagation of random breaking and nonbreaking waves over vegetation fields | Watershed analysis of urban stormwater contaminant 6PPD-Quinone hotspots and stream concentrations using a process-based ecohydrological model | 
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            Peer reviewed and published | Peer reviewed and published | Peer reviewed and published | Peer reviewed and published | Peer reviewed and published | Peer reviewed and published | Peer reviewed and published | 
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            Published on US EPA EnviroAtlas website | Published journal manuscript | Published journal manuscript | Published journal manuscript | Published journal manuscript | Published journal manuscript | Published journal manuscript | 
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                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
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            EM-63 | 
                
 
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    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| https://www.epa.gov/enviroatlas | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | Not reported | |
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                    Contact Name
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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    EnviroAtlas Team ?Comment:Additional contact: Jana Compton, EPA | 
        
        
        
    
        
        
            Richard T. Busing | Sam Tarrant | Sean R. Griffin | Gregg Lomnicky | F. J. Mendez | Jonathan Halama | 
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            Not reported | U.S. Geological Survey, 200 SW 35th Street, Corvallis, Oregon 97333 USA | RSPB UK Headquarters, The Lodge, Sandy, Bedfordshire SG19 2DL, U.K. | Department of Ecology, Evolution, and Natural Resources, Rutgers University, New Brunswick, NJ 08901, U.S.A. | 200 SW 35th St., Corvallis, OR, 97333 | Not reported | U.S. Environmental Protection Agency, Corvallis, OR | 
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            enviroatlas@epa.gov | rtbusing@aol.com | sam.tarrant@rspb.org.uk | srgriffin108@gmail.com | lomnicky.gregg@epa.gov | mendezf@unican.es | Halama.Jonathan@epa.gov | 
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                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
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            EM-63 | 
                
 
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    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
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                    Summary Description
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            DATA FACT SHEET: "This EnviroAtlas national map displays the rate of biological nitrogen (N) fixation (BNF) in natural/semi-natural ecosystems within each watershed (12-digit HUC) in the conterminous United States (excluding Hawaii and Alaska) for the year 2006. These data are based on the modeled relationship of BNF with actual evapotranspiration (AET) in natural/semi-natural ecosystems. The mean rate of BNF is for the 12-digit HUC, not to natural/semi-natural lands within the HUC." "BNF in natural/semi-natural ecosystems was estimated using a correlation with actual evapotranspiration (AET). This correlation is based on a global meta-analysis of BNF in natural/semi-natural ecosystems. AET estimates for 2006 were calculated using a regression equation describing the correlation of AET with climate and land use/land cover variables in the conterminous US. Data describing annual average minimum and maximum daily temperatures and total precipitation at the 2.5 arcmin (~4 km) scale for 2006 were acquired from the PRISM climate dataset. The National Land Cover Database (NLCD) for 2006 was acquired from the USGS at the scale of 30 x 30 m. BNF in natural/semi-natural ecosystems within individual 12-digit HUCs was modeled with an equation describing the statistical relationship between BNF (kg N ha-1 yr-1) and actual evapotranspiration (AET; cm yr–1) and scaled to the proportion of non-developed and non-agricultural land in the 12-digit HUC." EnviroAtlas maps BNF based on a correlation with AET modeled by Cleveland et al. 1999, and modified by land use (% natural vs. ag/developed) within each HUC. AET was modeled using climate and land use parameters (equation from Sanford and Selnick 2013). For full citations of these related models, see below, "Document ID for related EM." | ABSTRACT: "The FORCLIM model of forest dynamics was tested against field survey data for its ability to simulate basal area and composition of old forests across broad climatic gradients in western Oregon, USA. The model was also tested for its ability to capture successional trends in ecoregions of the west Cascade Range. It was then applied to simulate present and future (1990-2050) forest landscape dynamics of a watershed in the west Cascades. Various regimes of climate change and harvesting in the watershed were considered in the landscape application." AUTHOR'S DESCRIPTION: "Effects of different management histories on the landscape were incorporated using the land management (conservation, plan, or development trend) and forest age categories…the plan trend was an intermediate alternative, representing the continuation of current policies and trends, whereas the conservation and development trends were possible alternatives…Non-forested areas were given a forest age of zero; forested areas were assigned to one of eight forest age classes: >0-20 yr, 21-40 yr, 41-60 yr, 61-80 yr, 81-200 yr, 201-400 yr, and >600 yr in 1990…two climate change scenarios were used, representing lower and upper extremes projected by a set of global climate models: (1) minor warming with drier summers, and (2) major warming with wetter conditions…For the first scenario, temperature was increased by 0.5°C in 2025 and by 1.5°C in 2045. Precipitation from October to March was increased 2% in 2025 and decreased 2% in 2045. Precipitation from April to September was decreased 4% in 2025 and 7% in 2045. For the second scenario, temperature was by increased 2.6°C in 2025 and by 3.2°C in 2045. Precipitation from October to March was increased 18% in 2025 and 22% in 2045. Precipitation from April to September was increased 14% in 2025 and 9% in 2045. | ABSTRACT: "...Restored landfill sites are a significant potential reserve of semi-natural habitat, so their conservation value for supporting populations of pollinating insects was here examined by assessing whether the plant and pollinator assemblages of restored landfill sites are comparable to reference sites of existing wildlife value. Floral characteristics of the vegetation and the species richness and abundance of flower-visiting insect assemblages were compared between nine pairs of restored landfill sites and reference sites in the East Midlands of the United Kingdom, using standardized methods over two field seasons. …" AUTHOR'S DESCRIPTION: "The selection criteria for the landfill sites were greater than or equal to 50% of the site restored (to avoid undue influence from ongoing landfilling operations), greater than or equal to 0.5 ha in area and restored for greater than or equal to 4 years to allow establishment of vegetation. Comparison reference sites were the closest grassland sites of recognized nature conservation value, being designated as either Local Nature Reserves (LNRs) or Sites of Special Scientific Interest (SSSI)…All sites were surveyed three times each during the fieldwork season, in Spring, Summer, and Autumn. Paired sites were sampled on consecutive days whenever weather conditions permitted to reduce temporal bias. Standardized plant surveys were used (Dicks et al. 2002; Potts et al. 2006). Transects (100 × 2m) were centered from the approximate middle of the site and orientated using randomized bearing tables. All flowering plants were identified to species level…In the first year of study, plants in flower and flower visitors were surveyed using the same transects as for the floral resources surveys. The transect was left undisturbed for 20 minutes following the initial plant survey to allow the flower visitors to return. Each transect was surveyed at a rate of approximately 3m/minute for 30 minutes. All insects observed to touch the sexual parts of flowers were either captured using a butterfly net and transferred into individually labeled specimen jars, or directly captured into the jars. After the survey was completed, those insects that could be identified in the field were recorded and released. The flower-visitor surveys were conducted in the morning, within 1 hour of midday, and in the afternoon to sample those insects active at different times. Insects that could not be identified in the field were collected as voucher specimens for later identification. Identifications were verified using reference collections and by taxon specialists. Relatively low capture rates in the first year led to methods being altered in the second year when surveying followed a spiral pattern from a randomly determined point on the sites, at a standard pace of 10 m/minute for 30 minutes, following Nielsen and Bascompte (2007) and Kalikhman (2007). Given a 2-m wide transect, an area of approximately 600m2 was sampled in each | ABSTRACT: "Restoration efforts often focus on plants, but additionally require the establishment and long-term persistence of diverse groups of nontarget organisms, such as bees, for important ecosystem functions and meeting restoration goals. We investigated long-term patterns in the response of bees to habitat restoration by sampling bee communities along a 26-year chronosequence of restored tallgrass prairie in north-central Illinois, U.S.A. Specifically, we examined how bee communities changed over time since restoration in terms of (1) abundance and richness, (2) community composition, and (3) the two components of beta diversity, one-to-one species replacement, and changes in species richness. Bee abundance and raw richness increased with restoration age from the low level of the pre-restoration (agricultural) sites to the target level of the remnant prairie within the first 2–3 years after restoration, and these high levels were maintained throughout the entire restoration chronosequence. Bee community composition of the youngest restored sites differed from that of prairie remnants, but 5–7 years post-restoration the community composition of restored prairie converged with that of remnants. Landscape context, particularly nearby wooded land, was found to affect abundance, rarefied richness, and community composition. Partitioning overall beta diversity between sites into species replacement and richness effects revealed that the main driver of community change over time was the gradual accumulation of species, rather than one-to-one species replacement. At the spatial and temporal scales we studied, we conclude that prairie restoration efforts targeting plants also successfully restore bee communities." | ABSTRACT: [Sport fishing is an important recreational and economic activity, especially in Australia, Europe and North America, and the condition of sport fish populations is a key ecological indicator of water body condition for millions of anglers and the public. Despite its importance as an ecological indicator representing the status of sport fish populations, an index for measuring this ecosystem service has not been quantified by analyzing actual fish taxa, size and abundance data across the U.S.A. Therefore, we used game fish data collected from 1,561 stream and river sites located throughout the conterminous U.S.A. combined with specific fish species and size dollar weights to calculate site-specific recreational fishery index (RFI) scores. We then regressed those scores against 38 potential site-specific environmental predictor variables, as well as site-specific fish assemblage condition (multimetric index; MMI) scores based on entire fish assemblages, to determine the factors most associated with the RFI scores. We found weak correlations between RFI and MMI scores and weak to moderate correlations with environmental variables, which varied in importance with each of 9 ecoregions. We conclude that the RFI is a useful indicator of a stream ecosystem service, which should be of greater interest to the U.S.A. public and traditional fishery management agencies than are MMIs, which tend to be more useful for ecologists, environmentalists and environmental quality agencies.] | ABSTRACT: "In this work, a model for wave transformation on vegetation fields is presented. The formulation includes wave damping and wave breaking over vegetation fields at variable depths. Based on a nonlinear formulation of the drag force, either the transformation of monochromatic waves or irregular waves can be modelled considering geometric and physical characteristics of the vegetation field. The model depends on a single parameter similar to the drag coefficient, which is parameterized as a function of the local Keulegan–Carpenter number for a specific type of plant. Given this parameterization, determined with laboratory experiments for each plant type, the model is able to reproduce the root-mean-square wave height transformation observed in experimental data with reasonable accuracy." AUTHOR'S DESCRIPTION: "Therefore, a relation between C˜D and some nondimensional flow parameters is desirable to characterize hydrodynamically the L. hyperborea model plants for predictable purposes." | ABSTRACT: "Coho salmon (Oncorhynchus kisutch) are highly sensitive to 6PPD-Quinone (6PPD-Q). Details of the hydrological and biogeochemical processes controlling spatial and temporal dynamics of 6PPD-Q fate and transport from points of deposition to receiving waters (e.g., streams, estuaries) are poorly understood. To understand the fate and transport of 6PPD and mechanisms leading to salmon mortality Visualizing Ecosystem Land Management Assessments (VELMA), an ecohydrological model developed by US Environmental Protection Agency (EPA), was enhanced to better understand and inform stormwater management planning by municipal, state, and federal partners seeking to reduce stormwater contaminant loads in urban streams draining to the Puget Sound National Estuary. This work focuses on the 5.5 km2 Longfellow Creek upper watershed (Seattle, Washington, United States), which has long exhibited high rates of acute urban runoff mortality syndrome in coho salmon. We present VELMA model results to elucidate these processes for the Longfellow Creek watershed across multiple scales–from 5-m grid cells to the entire watershed. Our results highlight hydrological and biogeochemical controls on 6PPD-Q flow paths, and hotspots within the watershed and its stormwater infrastructure, that ultimately impact contaminant transport to Longfellow Creek and Puget Sound. Simulated daily average 6PPD-Q and available observed 6PPD-Q peak in-stream grab sample concentrations (ng/L) corresponds within plus or minus 10 ng/L. Most importantly, VELMA’s high-resolution spatial and temporal analysis of 6PPD-Q hotspots provides a tool for prioritizing the locations, amounts, and types of green infrastructure that can most effectively reduce 6PPD-Q stream concentrations to levels protective of coho salmon and other aquatic species. " | 
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                    Specific Policy or Decision Context Cited
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            None Identified | None identified | None identified | None identified | None identified | None identified | Not reported | 
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            No additional description provided | No additional description provided | No additional description provided | The Nachusa Grasslands consists of over 1,900 ha of restored prairie plantings, prairie remnants, and other habitats such as wetlands and oak savanna. The area is generally mesic with an average annual precipitation of 975 mm, and most precipitation occurs during the growing season. | None | No additional description provided | 6PPD deposition from vehicle tire wear particles. | 
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                    EM Scenario Drivers
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            No scenarios presented | Land Management (3); Climate Change (3) | No scenarios presented | No scenarios presented | N/A | No scenarios presented | N/A | 
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            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
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                    Method Only, Application of Method or Model Run
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            Method + Application | 
                
 
    Method + Application (multiple runs exist)  	     View EM Runs ?Comment:Runs differentiated by scenario combination. | 
        
        
        
    
        
        
            Method + Application (multiple runs exist) View EM Runs | Method + Application (multiple runs exist) View EM Runs | Method + Application | Method + Application | Method + Application | 
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            New or revised model | Application of existing model | New or revised model | New or revised model | New or revised model | New or revised model | Application of existing model | 
Related EMs (for example, other versions or derivations of this EM) described in ESML
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    Doc-346 | Doc-347 ?Comment:EnviroAtlas maps BNF based on a correlation with AET modeled by Cleveland et al. 1999, and modified by land use (% natural vs. ag/developed) within each HUC. AET was modeled using climate and land use parameters (equation from Sanford and Selnick 2013). For full citations of these related models, see below, "Document ID for related EM. | 
        
        
        
    
        
        
            
                
 
    Doc-22 | Doc-23 ?Comment:Related document ID 22 is a secondary source providing tree species specific parameters in appendix. | 
        
        
        
    
        
        
            Doc-389 | None | None | Doc-424 | Doc-366 | Doc-423 | Doc-430 | 
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            None | EM-146 | EM-186 | EM-224 | EM-697 | None | None | EM-896 | EM-897 | None | 
EM Modeling Approach
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                    EM Temporal Extent
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
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            2006-2010 | 1990-2050 | 2007-2008 | 1988-2014 | 2013-2014 | Not applicable | 9/2020-6/2021 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Time Dependence
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.timeDependencyHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            time-stationary | time-dependent | time-stationary | time-stationary | time-dependent | Not applicable | time-dependent | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Time Reference (Future/Past)
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.futurePastHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Not applicable | future time | Not applicable | Not applicable | past time | Not applicable | past time | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Time Continuity
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.continueDiscreteHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Not applicable | discrete | Not applicable | Not applicable | discrete | Not applicable | discrete | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Temporal Grain Size Value
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.tempGrainSizeHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Not applicable | 1 | Not applicable | Not applicable | 1 | Not applicable | 1 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Temporal Grain Size Unit
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.tempGrainSizeUnitHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Not applicable | Year | Not applicable | Not applicable | Year | Not applicable | Day | 
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                            
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
 
             
                
                
                
                    Bounding Type
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.boundingTypeHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Geopolitical | Watershed/Catchment/HUC | Multiple unrelated locations (e.g., meta-analysis) | Physiographic or ecological | Geopolitical | Not applicable | Watershed/Catchment/HUC | 
| 
 
    
    
    
    
 
             
                
                
                
                    Spatial Extent Name
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.extentNameHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            counterminous United States | South Santiam watershed | East Midlands | Nachusa Grasslands | United States | Not applicable | Longfellow creek | 
| 
 
    
    
    
    
 
             
                
                
                
                    Spatial Extent Area (Magnitude)
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.extentAreaHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            >1,000,000 km^2 | 100-1000 km^2 | 1000-10,000 km^2. | 10-100 km^2 | >1,000,000 km^2 | Not applicable | 1-10 km^2 | 
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                            
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Spatial Distribution
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.distributeLumpHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            
                
 
    spatially distributed (in at least some cases) ?Comment:Watersheds (12-digit HUCs). | 
        
        
        
    
        
        
            spatially distributed (in at least some cases) | spatially distributed (in at least some cases) | spatially distributed (in at least some cases) | spatially distributed (in at least some cases) | spatially lumped (in all cases) | spatially lumped (in all cases) | 
| 
 
    
    
    
    
 
             
                
                
                
                    Spatial Grain Type
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.spGrainTypeHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            other (specify), for irregular (e.g., stream reach, lake basin) | area, for pixel or radial feature | other (specify), for irregular (e.g., stream reach, lake basin) | other (specify), for irregular (e.g., stream reach, lake basin) | length, for linear feature (e.g., stream mile) | Not applicable | Not applicable | 
| 
 
    
    
    
    
 
             
                
                
                
                    Spatial Grain Size
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.spGrainSizeHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            irregular | 0.08 ha | multiple unrelated locations | Area varies by site | stream reach (site) | Not applicable | Not applicable | 
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                            
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Computational Approach
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.emComputationalApproachHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Analytic | Numeric | Analytic | Analytic | Analytic | Analytic | Analytic | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Determinism
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.deterStochHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            deterministic | deterministic | deterministic | deterministic | deterministic | deterministic | deterministic | 
| 
 
    
    
    
    
 
             
                
                
                
                    Statistical Estimation of EM
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.statisticalEstimationHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
                    
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                            
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
 
             
                
                
                
                    Model Calibration Reported?
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.calibrationHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            No | No | Not applicable | No | No | Yes | Yes | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Model Goodness of Fit Reported?
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.goodnessFitHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            No | No | Not applicable | No | No | Not applicable | No | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Goodness of Fit (metric| value | unit)
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.goodnessFitValuesHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            None | None | None | None | None | None | None | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Model Operational Validation Reported?
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.validationHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            No | No | Not applicable | No | No | Unclear | Yes | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Model Uncertainty Analysis Reported?
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.uncertaintyAnalysisHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            No | No | Not applicable | No | No | No | Unclear | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Model Sensitivity Analysis Reported?
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.sensAnalysisHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            No | No | Not applicable | No | No | No | Unclear | 
| 
 
    
    
    
    
    
 
             
                
                
                
                    Model Sensitivity Analysis Include Interactions?
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.interactionConsiderHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Not applicable | N/A | Not applicable | Not applicable | Not applicable | Not applicable | Not applicable | 
EM Locations, Environments, Ecology
Terrestrial location (Classification hierarchy: Continent > Country > U.S. State [United States only])
| EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            None | 
                
 
    
  | 
        
        
        
    
                        
Marine location (Classification hierarchy: Realm > Region > Province > Ecoregion)
| EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| None | None | None | None | None | 
                
 
    
  | 
        
        
        
    
        
        
            None | 
Centroid Lat/Long (Decimal Degree)
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                                    
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Centroid Latitude
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.ddLatHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                                
 
    
    
        
        
            39.5 | 44.24 | 52.22 | 41.89 | 36.21 | Not applicable | 47.55 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Centroid Longitude
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.ddLongHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                                
 
    
    
        
        
            -98.35 | -122.24 | -0.91 | -89.34 | -113.76 | Not applicable | 122.37 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Centroid Datum
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.datumHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                                
 
    
    
        
        
            WGS84 | None provided | WGS84 | WGS84 | WGS84 | Not applicable | None provided | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Centroid Coordinates Status
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.coordinateStatusHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                                
 
    
    
        
        
            Estimated | Provided | Estimated | Provided | Estimated | Not applicable | Provided | 
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                            
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Environmental Sub-Class
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.emEnvironmentalSubclassHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Terrestrial Environment (sub-classes not fully specified) | Forests | Created Greenspace | Grasslands | Agroecosystems | Grasslands | Rivers and Streams | Near Coastal Marine and Estuarine | Rivers and Streams | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    Specific Environment Type
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.specificEnvTypeHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Terrestrial | primarily Conifer Forest | restored landfills and grasslands | Restored prairie, prairie remnants, and cropland | reach | Near Coastal Marine and Estuarine | small stream | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Ecological Scale
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.ecoScaleHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            Ecological scale is finer than that of the Environmental Sub-class | Ecological scale is finer than that of the Environmental Sub-class | Ecological scale corresponds to the Environmental Sub-class | Ecological scale corresponds to the Environmental Sub-class | Ecological scale is finer than that of the Environmental Sub-class | Ecological scale corresponds to the Environmental Sub-class | Ecological scale is finer than that of the Environmental Sub-class | 
Scale of differentiation of organisms modeled
| 
 
    
    
    
    
    
 
             
                
                
                
                    EM ID
                
             
           
     
    
    
        
            
                
                    
                        
                            
                            
                                em.detail.idHelp
                            
                         ?
                
            
        
    
 | 
                        
 
    
    
        
        
            EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| 
 
    
    
    
    
    
 
             
                
                
                    
                    
                    EM Organismal Scale
                
                
             
           
     
    
    
        
            
                
                    
                        
                            
                                
                                    em.detail.orgScaleHelp
                                
                                
                            
                            
                         ?
                
            
        
    
 | 
                    
 
    
    
        
        
            Not applicable | Species | Individual or population, within a species | Species | Guild or Assemblage | Species | Species | 
Taxonomic level and name of organisms or groups identified
| EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
| None Available | 
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            None Available | 
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
                
EnviroAtlas URL
EM Ecosystem Goods and Services (EGS) potentially modeled, by classification system
CICES v 4.3 - Common International Classification of Ecosystem Services (Section > Division > Group > Class)
| EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
        
        
            
                
 
    
  | 
        
        
        
    
            
<a target="_blank" rel="noopener noreferrer" href="https://www.epa.gov/eco-research/national-ecosystem-services-classification-system-nescs-plus">National Ecosystem Services Classification System (NESCS) Plus</a>
(Environmental Subclass > Ecological End-Product (EEP) > EEP Subclass > EEP Modifier)
| EM-63 | 
                
 
    EM-208   | 
        
        
        
    
        
        
            
                
 
    EM-709   | 
        
        
        
    
        
        
            
                
 
    EM-788   | 
        
        
        
    
        
        
            EM-862 | EM-904 | EM-993 | 
                
 
    
  | 
        
        
        
    
        
        
            None | None | None | 
                
 
    
  | 
        
        
        
    
        
        
            None | 
                
 
    
 Comment:Model identifies toxicant concentrations relative to the known LC50 for coho juveniles which is 95ng/L (Spromber and Scholz, 2011; | 
        
        
        
    
            
    
        
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