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Supplemental Information

Fig. A

Percent cover of Forest, Yard, and Developed covers using LLC (a,b) and NLCD (c,d) within a 50m buffer surrounding wood frog ponds (a,c) and green frog ponds (b,d). LLC and NLCD data can be compared for a given. For wood frogs, LLC describes Developed land cover that is not described by NLCD and NLCD estimates more Yard cover than LLC. For green frogs, LLC describes Forest cover where NLCD does not and NLCD more Yard and Developed cover than does LLC. White bars are Forest cover, gray bars are Yard cover, and black bars are Developed land cover. X-axis number labels represent the same pond for top and bottom panels.

DOI: 10.7287/peerj.preprints.570v1/supp-1

Fig. A2

Relationships between Forest (a,b), Yard (c,d), and Developed (e,f) land covers between LLC (x-axis) and NLCD (y-axis) estimates. Land cover data are estimated both within a 50m buffer (a,c,e) and a 200m buffer (b,d,f) surrounding ponds. Both x- and y-axes are plotted on the same scale for a given panel. Green triangles are wood frog ponds and red circles are green frog ponds. When significant, coefficients of determination are presented. At the 50m scale, LLC estimated Forest cover for green frogs (a) and estimated Developed cover for wood frogs (b) that were entirely absent in NLCD data.

DOI: 10.7287/peerj.preprints.570v1/supp-2

Suburban Pond Land Cover Raw Data _ LLC and NLCD

Land cover data surrounding eight suburban wood frog and eight suburban green frog ponds in Connecticut. Pond area is presented in square meters and all land cover values are presented as percentages. All columns with “NLCD” in the header are National Land Cover database information; 2011 indicates that the data are from the NLCD dataset for the year 2011. All columns with “LLC” in the header are Local Land Cover data information. If a column has “50” in the header it indicates that data are percent cover within a 50m radius of the pond and “200” indicates that data are percent cover within a 200m radius. For NLCD, Forest and Developed covers are self-explanatory; “Open Space” cover indicates yard cover. For LLC, lawn, building, water, and forest are self-explanatory. Garden represents all non-lawn yard cover in LLC. Also for LLC, “YardSum” is garden and lawn categories summed and “DevSum” is building and paved categories summed.

DOI: 10.7287/peerj.preprints.570v1/supp-3

Additional Information

Competing Interests

The author declares they have no competing interests.

Author Contributions

Max Lambert conceived and designed the experiments, performed the experiments, analyzed the data, contributed reagents/materials/analysis tools, wrote the paper, prepared figures and/or tables, reviewed drafts of the paper.


The author received funding from the School of Forestry and Environmental Studies at Yale University. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

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