Growth rates of Maerl

(from Adey & McKibbin, 1970)

Mean growth rates recorded from field

measurements in the Ria de Vigo (mm d-1)
 

Phymatolithon calcareum

Lithothamnion corallioides
February

0.2

shrinkage
March

1.0

shrinkage
April

1.5

0.0
June

2.9

1.2
July

5.1

1.5
August

3.2

0.4
October-January

no date presented - zero growth rate assumed

Mean growth rates recorded from laboratory experiments (mm d-1)
 

Phymatolithon calcareum

Lithothamnion corallioides
light:dark (h)

14 : 10

@ 4-4.6 mmol m-2 s-1

"summer"

8 : 16

@ 2-2.4 mmol m-2 s-1

"winter"

14 : 10

@ 4-4.6 mmol m-2 s-1

"summer"

8 : 16

@ 2-2.4 mmol m-2 s-1

"winter"
°C

 

 

 

 
 

0.2

-

died

-

died
0.4

died

-

died

-
2.1

-

no growth

-

died
5.0

no growth

-

no growth

-
6.0

-

no growth

-

no growth
10.0

3.3

0.7 - 1.03

mmol m-2 s-1

3.9

0.5 - 1.03

mmol m-2 s-1
15.1

4.2

0.7

1.9

-
17.0

3.2

-

1.1

-
19.0

2.3

-

0.2

-
 

 

  

 

  

 

  

Lithothamnion glaciale
13.5    

 

  

13.0

  

References