Curve Fit regression tool y-intercept outputs for wild celery, wild rice and arrowhead for pools 4, 8, and 13 on the Upper Mississippi River system from 1998-2019
Dates
Publication Date
2023-03-21
Start Date
1998-01-01
End Date
2019-12-31
Citation
Rohweder, J.J., Carhart, A.M., and Larson, D.M., 2023, 22 years of aquatic plant spatiotemporal dynamics in the Upper Mississippi River - derived spatial data (Pools 4, 8, and 13): U.S. Geological Survey data release, https://doi.org/10.5066/P96A7PC5.
Summary
A geodatabase was developed to compile Curve Fit (Version 10.1; De Jager and Fox, 2013) regression tool standard error outputs for wild celery (Vallisneria americana), wild rice (Zizania aquatica) and arrowhead (one raster for the sum of Sagittaria rigida and Sagittaria latifolia) for pools 4, 8, and 13 on the Upper Mississippi River system from 1998-2019 using mapped abundance raster datasets. Relative abundance, for submersed species and filamentous algae, represents the sum of rake scores across the six subsites divided by the maximum possible rake score (30) at each site, multiplied by 100 (0-100%). Percent cover, for emersed, rooted floating-leaved and free-floating lifeforms, represents the maximum % cover for each category (0, [...]
Summary
A geodatabase was developed to compile Curve Fit (Version 10.1; De Jager and Fox, 2013) regression tool standard error outputs for wild celery (Vallisneria americana), wild rice (Zizania aquatica) and arrowhead (one raster for the sum of Sagittaria rigida and Sagittaria latifolia) for pools 4, 8, and 13 on the Upper Mississippi River system from 1998-2019 using mapped abundance raster datasets. Relative abundance, for submersed species and filamentous algae, represents the sum of rake scores across the six subsites divided by the maximum possible rake score (30) at each site, multiplied by 100 (0-100%). Percent cover, for emersed, rooted floating-leaved and free-floating lifeforms, represents the maximum % cover for each category (0, 20, 40, 60, 80, 100%). Each explanatory variable (year) was paired with the corresponding raster by pool. Curve Fit was used to estimate the linear relationship between year and pixel value (one relative abundance/percent cover value per year) and create an output raster containing parameter estimates, model error, and r2. The y-intercept (parameter b) is the predicted value for the response (y) when x = 0. Outputs were developed at two temporal scales: 1998-2019 and 2010-2019.
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Related External Resources
Type: Related Primary Publication
Carhart A, Rohweder J, Larson DM (2023) 22 years of aquatic plant spatiotemporal dynamics in the Upper Mississippi River, 20 pages. Diversity 15, 523. DOI: 10.3390/d15040523 https://doi.org/10.3390/d15040523
Managing for certain species and vegetation abundance/diversity, understanding where aquatic vegetation communities are stable and where changes are occurring, and identifying environmental factors associated with changes are important to managers and researchers on the Upper Mississippi River system.
