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Table 1 Detection of epiphytic organisms in four kelp farms in Korea

From: A survey of epiphytic organisms in cultured kelp Saccharina japonica in Korea

Place Farm Date Water temperature (°C) Mean thallus length (cm) Detection rate of epiphytic organisms % (detection no./total no.)
Hydroid Bryozoan Polychaete Algae Caprellid Oyster
Wando WDA Apr 2014 11.5 340 (200–380) 0 (0/10) 0 (0/10) 0 (0/10) 0 (0/10) 0 (0/10) 0 (0/10)
May 2014 15.5 260 (260–270) 0 (0/2) 0 (0/2) 0 (0/2) 0 (0/2) 0 (0/2) 0 (0/2)
Jun 2014 17.4 NT 20 (1/5) 0 (0/5) 0 (0/5) 0 (0/5) 20 (1/5) 0 (0/5)
Jul 2014 21.7 190 (100–240) 100 (6/6) 50 (3/6) 0 (0/6) 100 (6/6) 0 (0/6) 0 (0/6)
Aug 2014 23 200 (100–240) 71.4 (5/7) 57.1 (4/7) 0 (0/7) 71.4 (5/7) 71.4 (5/7) 0 (0/7)
Sep 2014 22.1 120 (90–160) 57.1 (4/7) 71.4 (5/7) 0 (0/7) 14.3 (1/7) 0 (0/7) 57.1 (4/7)
Jan 2015 9 41 (20–71) 0 (0/71) 0 (0/71) 0 (0/71) 0 (0/71) 0 (0/71) 0 (0/71)
Jan 2015 8.3 82 (39–122) 0 (0/75) 0 (0/75) 0 (0/75) 0 (0/75) 0 (0/75) 0 (0/75)
Apr 2015 11 236 (200–280) 0 (0/30) 0 (0/30) 0 (0/30) 0 (0/30) 0 (0/30) 0 (0/30)
Total detection rate in WDA 7.5 (16/213) 5.6 (12/213) 0 (0/213) 5.6 (12/213) 2.8 (6/213) 0.9 (4/213)
WDB May 2014 15.4 220 (100–330) 0 (0/14) 0 (0/14) 0 (0/14) 0(0/14) 0 (0/14) 0 (0/14)
Jun 2014 21 260 (180–320) 57.1 (4/7) 0 (0/7) 0 (0/7) 28.6 (2/7) 0 (0/7) 0 (0/7)
Jul 2014 21.5 160 (130–200) 100 (14/14) 0 (0/14) 35.7 (5/14) 0 (0/14) 7.1 (1/14) 0 (0/14)
Sep 2014 21.6 130 (60–230) 100 (15/15) 33.3 (5/15) 0 (0/15) 13.3 (2/15) 0 (0/15) 0 (0/15)
Feb 2015 9 57 (30–100) 0 (0/100) 0 (0/100) 0 (0/100) 0 (0/100) 0 (0/100) 0 (0/100)
Mar 2015 11 97 (50–180) 0 (0/73) 0 (0/73) 0 (0/73) 0 (0/73) 0 (0/73) 0 (0/73)
Apr 2015 12.5 127 (90–190) 0 (0/30) 0 (0/30) 0 (0/30) 0 (0/30) 0 (0/30) 0 (0/30)
Total detection rate in WDB 13 (33/253) 2 (5/253) 2 (5/253) 1.6 (4/253) 0.4 (1/253) 0 (0/253)
Busan BS Apr 2014 11 170 (50–270) 0 (0/10) 10 (1/10) 0 (0/10) 30 (3/10) 0 (0/10) 0 (0/10)
May 2014 14.5 230 (130–280) 100 (9/9) 88.9 (8/9) 0 (0/9) 0 (0/9) 0 (0/9) 0 (0/9)
Jun 2014 21 220 (180–300) 100 (7/7) 71.4 (5/7) 0 (0/7) 71.4 (5/7) 0 (0/7) 0 (0/7)
Jul 2014 20.4 160 (120–180) 100 (10/10) 90 (9/10) 0 (0/10) 0 (0/10) 100 (10/10) 0 (0/10)
Feb 2015 11.5 76 (26–175) 0 (0/58) 0 (0/58) 0 (0/58) 0 (0/58) 0 (0/58) 0 (0/58)
Feb 2015 12 143 (80–219) 0 (0/37) 0 (0/37) 0 (0/37) 0 (0/37) 0 (0/37) 0 (0/37)
Mar 2015 12.5 182 (110–260) 0 (0/70) 0 (0/70) 0 (0/70) 0 (0/70) 0 (0/70) 0 (0/70)
Apr 2015 13 203 (120–270) 0 (0/35) 0 (0/35) 0 (0/35) 0 (0/35) 0 (0/35) 0 (0/35)
Total detection rate in BS 11 (26/236) 9.7 (23/236) 0 (0/236) 3.4 (8/236) 4.2 (10/236) 0 (0/236)
Pohang PH Jul 2014 20.5 140 (50–220) 28.6 (4/14) 7.1 (1/14) 28.6 (4/14) 0 (0/14) 0 (0/14) 0 (0/14)
Aug 2014 23.4 110 (80–150) 50 (5/10) 60 (6/10) 20 (2/10) 0 (0/10) 0 (0/10) 0 (0/10)
Sep 2014 23.1 70 (30–110) 14.3 (2/14) 0 (0/14) 100 (14/14) 0 (0/14) 0 (0/14) 0 (0/14)
Total detection rate in PH 28.9 (11/38) 18.4 (7/38) 52.6 (20/38) 0 (0/38) 0 (0/38) 0 (0/38)
Total detection rate in 4 farms 11.6 (86/740) 6.4 (47/740) 3.4 (25/740) 3.2 (24/740) 3 (22/740) 0.5 (4/740)
  1. NT not tested