Nonparametric correlation (Spearman’s rho) test between major phylotype and physicochemical parameters.

In this test, only seawater samples (SW1 to SW9) were analyzed except for melting pond (MP1 to MP4) and ice core (IB and IT) samples. Bold numbers are significant at p ≤ 0.05.本测试仅对海水样品（SW1至SW9）进行分析，融池（MP1至MP4）与冰芯（IB、IT）样品除外。加粗数字在P值≤0.05时具有统计学显著性。