Abstract
ABSTRACT Seasonal variations in nitrate and organic nitrogen content along the wing and midrib of Alaria esculenta (L.) Grev. lamina have been compared with the NO3‐ cycle in the sea and yearly growth pattern of the blade. Throughout the year, organic N is highest in blade meristem, while NO3‐ distribution is less consistent. NO3‐in blades reaches a peak in March (ca. 25–28 μM), whereas maximum relative accumulation, 3,300X ambient seawater level, occurs in October. Content of NO3‐ and organic N in the blade decreases in concert with the decline of seawater NO3‐ in April. The three periods of rapid blade growth are not correlated with a specific organic N content in the blade meristem. Laboratory experiments suggest that low NO3‐ and elevated seawater temperature are not the major factors retarding Alaria blade growth during summer and early fall in nature.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
