. Author manuscript; available in PMC: 2022 Mar 1.

Published in final edited form as: J Caves Karst Stud. 2021 Mar;83(1):29–43. doi: 10.4311/2019es0118

Table 3.

Siderophore detection in LT (n=80) and ST (n=90) bacterial cultures.

Group	Siderophore Detection Level_^b	Days					Total Cultures (%)
Group	Siderophore Detection Level_^b	<10	11–15	16–20	21–25	>26	Total Cultures (%)
LT	Strong (>2mm)		7 (9)	1 (1)	2 (3)	18 (23)	28 (36)
	Weak (<2mm)		2 (3)			10 (13)	12 (16)
	None						13 (16)
	NG¹						27 (32)
	Total (%)	0 (0)	9 (12)	1 (1)	2 (3)	28 (36)	80 (100)
ST	Strong (>2mm)	11 (12)	21 (23)	10 (11)	6 (7)	20 (22)	68 (75)
	Weak (<2mm)		1 (1)				1 (1)
	None						15 (17)
	NG^a						6 (7)
	Total (%)	11 (12)	22 (24)	10 (11)	6 (7)	20 (22)	90 (100)

^a.

No growth (NG)- live bacteria cultures that did not grow on CAS media when transferred from Fe-limiting ISP4 media.

^b.

Zone of color change. Numbers within parentheses are percentages (%).