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Article
Development of Saccharina latissima (Phaeophyceae) kelp hatcheries with year-round production of zoospores and juvenile sporophytes on culture ropes for kelp aquaculture
Saccharina latissima is attractive for industrial cultivation for different usages, such as biofuels, feed supplements, and derivation of chemicals. A continuous supply of kelp sporelings through...
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Article
Tank cultivation of the red alga Palmaria palmata: Effects of intermittent light on growth rate, yield and growth kinetics
Tank cultivation of marine macroalgaeinvolves air-agitation of the algal biomassand intermittent light conditions,i.e.periodic, short light exposure of thethalli in the range of 10 s at the watersurface follow...
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Article
Photoperiodic long-day control of sporophyll and hair formation in the brown alga Undaria pinnatifida
Two photoperiodic responses, the development of sporophylls and hairs, havebeen quantified in sporophytes of the brown alga Undaria pinnatifida. In a finalexperiment, the algae were cultivated in outdoor, 2000-L ...
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Article
Mass cultivation of seaweeds: current aspects and approaches
A word-wide overview is presented of the current state of mass cultivation of seaweeds. In comparison with a total annual commercial production of fish, crustaceans and molluscs of about 120 × 106t, of which one-...
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Article
Isolated, distal blade discs of the brown alga Laminaria digitata form sorus, but not discs, near to the meristematic transition zone
Blade discs of vegetative thalli of Laminaria digitata (Huds.) Lamour. from Helgoland (North Sea) cut at 5–15 cm distance from the blade/stipe transition, formed sorus in the laboratory after 7–12weeks, 5 months ...
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Article
Natural ultraviolet radiation and photosynthetically active radiation induce formation of mycosporine-like amino acids in the marine macroalga Chondrus crispus (Rhodophyta)
The UV-absorbing mycosporine-like amino acids (MAAs) are hypothesized to protect organisms against harmful UV radiation (UVR). Since the physiology and metabolism of these compounds are unknown, the induction...
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Chapter
Natural UV Enhances Chloroplast Protein Damage in Chondrus Crispus, Despite the Presence of UV Screening Pigments
As a result of the daily tidal cycle, eulittoral macroalgae are exposed to high levels of photosynthetically active (PAR, 400–700 nm), UV-A (320–400 nm) and UV-B (280–320 nm) radiation. Exposure to high PAR le...
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Article
The vertebrate pineal hormone melatonin is produced by the brown alga Pterygophora californica and mimics dark effects on growth rate in the light
Melatonin, a methoxylated indoleamine, plays a role as a mediator of darkness in animals as well as in the unicellular alga Gonyaulax polyedra Stein and was recently detected in higher plants. We report on the fi...
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Article
Environmental and internal control of seasonal growth in seaweeds
Elaborate control systems activate and inactivate growth meristems of certain seaweeds so that their seasonal phases of growth and rest are exactly synchronized to the environmental annual course. Recent tank ...
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Chapter and Conference Paper
Environmental and internal control of seasonal growth in seaweeds
Elaborate control systems activate and inactivate growth meristems of certain seaweeds so that their seasonal phases of growth and rest are exactly synchronized to the environmental annual course. Recent tank ...
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Chapter and Conference Paper
The Distribution and Evolution of the Laminariales: North Pacific — Atlantic Relationships
The present paper outlines within order relationships of the Laminariales on the basis of paleoceanographic constraints and recent experimental results, especially those dealing with temperature tolerance and ...
