Duke Models for the U.S. East Coast
Model History for Atlantic spotted dolphin (Stenella frontalis)
These files are © 2015-2023 Marine Geospatial Ecology Lab and licensed under a Creative Commons Attribution 4.0 International License. If you use them in a scientific publication or technical report, we kindly request that you cite the documentation listed for the model you use.
Version 9.1 - 2023-05-27
Completed the supplementary report documenting the details of this model. The model itself was not changed.
DocumentationName: Roberts et al. (2016) Citation: Roberts JJ, Best BD, Mannocci L, Fujioka E, Halpin PN, Palka DL, Garrison LP, Mullin KD, Cole TVN, Khan CB, McLellan WM, Pabst DA, Lockhart GG (2016) Habitat-based cetacean density models for the U.S. Atlantic and Gulf of Mexico. Scientific Reports 6: 22615. doi: 10.1038/srep22615 Name: Roberts et al. (2023) Citation: Roberts JJ, Yack TM, Halpin PN (2023) Marine mammal density models for the U.S. Navy Atlantic Fleet Training and Testing (AFTT) study area for the Phase IV Navy Marine Species Density Database (NMSDD). Document version 1.3. Report prepared for Naval Facilities Engineering Systems Command, Atlantic by the Duke University Marine Geospatial Ecology Lab, Durham, NC Name: Roberts et al. (2022) Citation: Roberts JJ, Yack TM, Canadas A, Fujioka E, Halpin PN, Barco SG, Boisseau O, Chavez-Rosales S, Cole TVN, Cotter MP, Cummings EW, Davis GE, DiGiovanni Jr. RA, Garrison LP, Gowan TA, Jackson KA, Kenney RD, Khan CB, Lockhart GG, Lomac-MacNair KS, McAlarney RJ, McLellan WA, Mullin KD, Nowacek DP, O'Brien O, Pabst DA, Palka DL, Quintana-Rizzo E, Redfern JV, Rickard ME, White M, Whitt AD, Zoidis AM (2022) Density Model for Atlantic Spotted Dolphin (Stenella frontalis) for the U.S. East Coast, Version 9.1, 2023-05-27, and Supplementary Report. Marine Geospatial Ecology Laboratory, Duke University, Durham, NC | |
Version 9 - 2022-06-20
This model is a major update over the prior version, with substantial additional data, improved statistical methods, and an increased spatial resolution. It was released as part of the final delivery of the U.S. Navy Marine Species Density Database (NMSDD) for the Atlantic Fleet Testing and Training (AFTT) Phase IV Environmental Impact Statement. Several new collaborators joined and contributed survey data: New York State Department of Environmental Conservation, TetraTech, HDR, and Marine Conservation Research. We incorporated additional surveys from all continuing and new collaborators through the end of 2020. (Because some environmental covariates were only available through 2019, certain models only extend through 2019.) We increased the spatial resolution to 5 km and, at NOAA's request, we extended the model further inshore from New York through Maine. We reformulated and refitted all detection functions and spatial models. We updated all environmental covariates to newer products, when available, and added several covariates to the set of candidates. For models that incorporated dynamic covariates, we estimated model uncertainty using a new method that accounts for both model parameter error and temporal variability.
DocumentationName: Roberts et al. (2016a) Citation: Roberts JJ, Best BD, Mannocci L, Fujioka E, Halpin PN, Palka DL, Garrison LP, Mullin KD, Cole TVN, Khan CB, McLellan WM, Pabst DA, Lockhart GG (2016) Habitat-based cetacean density models for the U.S. Atlantic and Gulf of Mexico. Scientific Reports 6: 22615. doi: 10.1038/srep22615 | |
Version 8 - 2018-04-14
Began update to Roberts et al. (2015) model. Introduced new surveys from AMAPPS, NARWSS, UNCW, VAMSC, and the SEUS NARW teams. Updated modeling methodology. Refitted detection functions and spatial models from scratch using new and reprocessed covariates. Model released as part of a scheduled update to the U.S. Navy Marine Species Density Database (NMSDD).
DocumentationName: Roberts et al. (2016a) Citation: Roberts JJ, Best BD, Mannocci L, Fujioka E, Halpin PN, Palka DL, Garrison LP, Mullin KD, Cole TVN, Khan CB, McLellan WM, Pabst DA, Lockhart GG (2016) Habitat-based cetacean density models for the U.S. Atlantic and Gulf of Mexico. Scientific Reports 6: 22615. doi: 10.1038/srep22615 Name: Roberts et al. (2016b) Citation: Roberts JJ, Mannocci L, Halpin PN (2016) Final Project Report: Marine Species Density Data Gap Assessments and Update for the AFTT Study Area, 2015-2016 (Base Year). Document version 1.0. Report prepared for Naval Facilities Engineering Command, Atlantic by the Duke University Marine Geospatial Ecology Lab, Durham, NC Name: Roberts et al. (2017) Citation: Roberts JJ, Mannocci L, Halpin PN (2017) Final Project Report: Marine Species Density Data Gap Assessments and Update for the AFTT Study Area, 2016-2017 (Opt. Year 1). Document version 1.4. Report prepared for Naval Facilities Engineering Command, Atlantic by the Duke University Marine Geospatial Ecology Lab, Durham, NC Name: Roberts et al. (2018) Citation: Roberts JJ, Mannocci L, Schick RS, Halpin PN (2018) Final Project Report: Marine Species Density Data Gap Assessments and Update for the AFTT Study Area, 2017-2018 (Opt. Year 2). Document version 1.2. Report prepared for Naval Facilities Engineering Command, Atlantic by the Duke University Marine Geospatial Ecology Lab, Durham, NC | |
Version 7.3 - 2015-09-03
Updated the documentation. No changes to the model. Model files released as supplementary information to Roberts et al. (2016).
DocumentationName: Roberts et al. (2016) Citation: Roberts JJ, Best BD, Mannocci L, Fujioka E, Halpin PN, Palka DL, Garrison LP, Mullin KD, Cole TVN, Khan CB, McLellan WM, Pabst DA, Lockhart GG (2016) Habitat-based cetacean density models for the U.S. Atlantic and Gulf of Mexico. Scientific Reports 6: 22615. doi: 10.1038/srep22615 Name: Density Model Supplementary Report Citation: Roberts JJ, Best BD, Mannocci L, Fujioka E, Halpin PN, Palka DL, Garrison LP, Mullin KD, Cole TVN, Khan CB, McLellan WM, Pabst DA, Lockhart GG (2016) Density Model for Atlantic Spotted Dolphin (Stenella frontalis) for the U.S. East Coast Version 7.3, 2015-09-03, and Supplementary Report. Marine Geospatial Ecology Lab, Duke University, Durham, NC | |
Version 7.2 - 2015-05-14 (unreleased)
Updated calculation of CVs. Switched density rasters to logarithmic breaks. No changes to the model.
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Version 7.1 - 2015-03-06 (unreleased)
Updated the documentation. No changes to the model.
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Version 7 - 2015-01-24 (unreleased)
Forced abundance to zero in the vicinity of New York-New Jersey Harbor. We found no documentation that Atlantic spotted dolphins occur here, but our model predicts some abundance. We believe this prediction is in error and are manually correcting it.
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Version 6 - 2014-12-05 (unreleased)
Fixed bug that applied the wrong detection function to segments NE_narwss_1999_widgeon_hapo dataset. Refitted model. Updated documentation.
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Version 5 - 2014-11-19 (unreleased)
Removed CumVGPM180 predictor and refitted models. Updated documentation.
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Version 4 - 2014-11-13 (unreleased)
Reconfigured detection hierarchy and adjusted NARWSS detection functions based on additional information from Tim Cole. Updated documentation.
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Version 3 - 2014-10-17 (unreleased)
Adjusted g(0) estimates based on feedback from September 2014 review. Adjusted proxy species used in certain detection functions to be consistent with other dolphin species. Updated distance to eddy predictors using Chelton et al.'s 2014 database. Removed distance to eddy and wind speed predictors from on shelf model. Fixed missing pixels in several climatological predictors, which led to not all segments being utilized.
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Version 2 - 2014-09-02 (unreleased)
Added surveys: NJ-DEP, Virginia Aquarium, NARWSS 2013, UNCW 2013. Extended study area up Scotian Shelf. Added SEAPODYM predictors. Switched to mgcv estimation of Tweedie p parameter (family=tw()).
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Version 1 - 2014-05-14 (unreleased)
Initial version.
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