Table 1
Detection of epiphytic organisms in four kelp farms 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)