marginally significantp = 0.06
After the phylogenetically independent contrasts (PICs), the negative linear relationships were still significant in 2018 (R 2 = 0.34, p < 0.05) and marginally significant in 2019 (R 2 = 0.45, p = 0.06), which indicated that the phylogenetic effect did not change the trade-off relationships ( Table S1 ).