TABLE 2.

Mantel test summary statistics

Test description	R (cyanobacteriac,e)	R (environmentd,e)
Matrix based on cyanophage isolatea
Podovirus + myovirus	0.530*	0.475*
Podovirus	0.522*	0.481*
Myovirus	0.516*	0.432*
Matrix based on cyanophage genotypeb
Podovirus + myovirus	0.523*	0.494*
Podovirus	0.539*	0.488*
Myovirus	0.263*	0.300*
Matrix based on cyanobacterial genotypec
Cyanobacteria	-	0.475*

^aThe Bray-Curtis similarity matrix was calculated based on the relative abundances of the reads that were recruited to each of the cyanophage isolates.

^bThe Bray-Curtis similarity matrix was calculated based on the relative abundances of the reads that were recruited to each of the cyanophage genotypes (MPP-A, MPP-B1, -B2, -B3, and -B4, and P-RSP2-like for cyanopodoviruses and I, II, III, and IV for cyanomyoviruses).

^cThe Bray-Curtis similarity matrix was calculated based on the relative abundances of the reads that were recruited to each of the cyanobacterial genotypes (HLI, HLII, LLI, and LLII for Prochlorococcus and sub5.1-I, -II, -III, -IV, -V, -VI, -VIII, and -IX and sub5.2 and sub5.3 for marine Synechococcus).

^dThe Euclidean distance matrix was calculated based on the z-score transformed environmental parameters of temperature, depth, latitude, and chlorophyll a.

^e*, P < 0.01.