新的并坚持使用 ggplot：
我有以下数据：
tribe rho preference_watermass
1 Luna2 -1.000 hypolimnic
2 OP10I-A1 -1.000 epilimnic
3 B0_FO56C -0.986 hypolimnic
4 Planctomycetes_FGIDN -0.943 hypolimnic
5 acIV_IVNEG -0.943 hypolimnic
6 FTD4J6C01EE04F -0.941 hypolimnic
7 alll -0.941 hypolimnic
8 FTD4J6C02HMHDM -0.928 hypolimnic
9 Planctomycetes_GQLBU -0.928 hypolimnic
10 acII-A -0.886 epilimnic
11 LD19_GMKGQ -0.880 hypolimnic
12 acIV_E2W4O -0.880 hypolimnic
13 Planctomycetes_AFE3Z -0.880 epilimnic
14 Bacteriodetes -0.880 epilimnic
15 FTD4J6C01APQD0 -0.880 epilimnic
16 FTD4J6C02GBAUX -0.880 epilimnic
17 baII -0.845 epilimnic
18 FTD4J6C01CJCBG 0.812 transitient
19 Pyxis …