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. 2023 May 3;9(18):eadf4896. doi: 10.1126/sciadv.adf4896

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Fig. 2. — Trends show (A) decreases in total density of macroinvertebrates identified to genus [conditional coefficient of determination (R²), 0.81; marginal R², 0.77; F(Year), 8.4; P(Year), 0.004], (B) increases in α diversity [conditional R², 0.68; marginal R², 0.34; χ² (Year), 68.0; P(Year), <0.0001], and no change in (C) γ_est diversity [conditional R², 0.82; marginal R², 0.05; F(Year), 0.7; P(Year), 0.424] or (D) β diversity [conditional R², 0.72; marginal R², 0.03; F(Year), 1.0; P(Year), 0.344]. Here, greater values of β diversity specify increasingly similar communities. Additional statistical output provided in table S2. Ecoregion abbreviations provided in Fig. 1.