Estimation of Annual Production by the Intertidal Brown Alga Ascophyllum nodosum (L.) Le Jolis

1984 ◽  
Vol 27 (5) ◽  
Author(s):  
R. Cousens
Keyword(s):  
Brown Alga ◽  
Ascophyllum Nodosum ◽  
Annual Production

Importance of sulfate groups for the macrophage-stimulating activities of ascophyllan isolated from the brown alga Ascophyllum nodosum

2013 ◽  
Vol 380 ◽  
pp. 124-129 ◽  
Author(s):  
Zedong Jiang ◽  
Mikinori Ueno ◽  
Tomoki Nishiguchi ◽  
Ryogo Abu ◽  
Shogo Isaka ◽  
...  
Keyword(s):  
Brown Alga ◽  
Ascophyllum Nodosum

The effect of predation on the life histories of Littorina obtusata and Littorina mariae

1992 ◽  
Vol 72 (2) ◽  
pp. 403-416 ◽  
Author(s):  
Gray A. Williams
Keyword(s):  
Population Dynamics ◽  
Brown Alga ◽  
Life Histories ◽  
Size Range ◽  
Ascophyllum Nodosum ◽  
First Year ◽  
Littorina Obtusata ◽  
Fucus Serratus ◽  
Second Year

Littorina obtusata is an epiphytic gastropod which lives for three to four years on its host Ascophyllum nodosum, a long-lived brown alga. Most of the population consists of adults, present throughout the year in the size range 14 to 17 mm. Newly hatched individuals appear between April and October with a peak in July; the immature winkles grow to merge with the adult cohort in May.In contrast Littorina mariae is an annual; newly hatched individuals grow to maturity by the winter of their first year. Those reaching maturity overwinter as adults but very few live beyond spring of their second year. The population dynamics of L. mariae are closely linked with changes in the biomass of the alga Fucus serratus on which it lives.

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