labsphere reflectance standard  (Labsphere Inc)

Journal: Ecology and Evolution

Article Title: Assessing the Impact of Environment on the Color of Painted Turtles ( Chrysemys picta ) in the Wild

doi: 10.1002/ece3.71702

Figure Lengend Snippet: Reflectance spectra of the carapace (A), plastron (B), and neck stripe (C) of the painted turtle. The dark line shows the mean spectrum across all individuals, and the shaded area shows the standard deviation.

Article Snippet: The spectrometer was calibrated using a Labsphere reflectance standard that reflects equally (99%) across the ultraviolet and visual spectrum (300–800 nm).

Techniques: Standard Deviation

Journal: Ecology and Evolution

Article Title: Assessing the Impact of Environment on the Color of Painted Turtles ( Chrysemys picta ) in the Wild

doi: 10.1002/ece3.71702

Figure Lengend Snippet: Plastron carotenoid chroma did not change with water clarity or any other fixed effects (A), though the shape of the spectra shifted slightly with water clarity (B). The regression line shows the estimate from the linear mixed effects model with population as a random effect and log‐transformed water clarity, plant density, their interaction, carapace length, and sex as fixed effects. Points are jittered along the x ‐axis for clarity. The mean reflectance spectrum is shown for each site, with the standard deviation shaded. The x ‐axis is from 300 to 750 nm and the y ‐axis is from 0% to 100% reflectance for all spectra.

Article Snippet: The spectrometer was calibrated using a Labsphere reflectance standard that reflects equally (99%) across the ultraviolet and visual spectrum (300–800 nm).

Techniques: Transformation Assay, Standard Deviation