Soil functional relationship
between microbial activity and soil
aggregation in control (A), or experimentally contaminated soils containing
polyacrylic (B), polyamide (C), polyester (D), and polyethylene (E).
The general association between these two proxies of soil health is
unraveled on panel F (F = 13.01, r2 = 0.13, p < 0.001). In all panels
dark gray, yellow, green, red, and blue colors represent control,
polyacrylic, polyamide, polyester, and polyethylene treatments, respectively
(i.e., linear microplastics are in warm colors: yellow and red, nonlinear
microplastics are in cold colors: blue and green).