nudus from an Eisenia bicyclis
kelp bed in February had recovering gonads with greater than 15 gonad indices and low [DELTA][E.sub.ab]* values (female: 5.5; male: 5.7).
During the period from late 1980s to early 1990s most of the coastal area of the Ojika Islands was covered by Eisenia bicyclis
and Ecklonia cava, which are good sources of food for abalone (Kikuchi et al.
Marine aforestation of Eisenia bicyclis (Laminariaceae: Phaeophyta).
Chemical defense mechanism of the brown alga Eisenia bicyclis against marine herbivores.
ABSTRACT We gauged the effect of the sea urchins Hemicentrotus pulcherrimus and Anthocidaris crassispina on an Eisenia bicyclis kelp bed on the Kii Peninsula in southwestern Japan.
KEY WORDS: Hemicentrotus pulcherrimus, Anthocidaris crassispina, herbivory, mass mortality, Eisenia bicyclis, kelp, sea urchin
crassispina is closely related to deforestation of the kelp Eisenia bicyclis (Yotsui & Maesako 1993).
[delta][sup.13]C [delta][sup.13]N ([per thousand) ([per thousand) Species Mean SD Mean SD Potential food source Chlorophyceae Cladophorajaponica -16.4 -- 4.7 -- Phaeophyceae Eisenia bicyclis
-16.9 1.7 4.6 2.2 Pachydictyon coriaceum -20.0 - 4.4 -- Undaria pinnatida -15.9 1.5 3.1 1.4 Rodophyceae Gelidium elegans -18.5 1.3 5.1 0.9 Grateloupia lanceolata -17.7 -- 5.1 -- Pterocladiella tenuis -19.0 -- 5.7 -- Benthic microalgae -18.8 0.8 5.8 0.2 Abalone Haliotis discus hannai (l.9-6.9 mm SL) -17.0 0.8 8.0 0.9 Group Species n No.
nudus is also found in Pacific coastal waters, where an Eisenia bicyclis forest grows in subtidal shallow waters (Sano et al.
Marine afforestation of Eisenia bicyclis (Laminariaceae: Phaeophyta).