The content you've requested is available without charge only to active Sigma Xi members and
If you are an active member or an individual subscriber, please log in now in order to access this article.
If you are not a member or individual subscriber, you can:
Although some siphonous green algae (order Bryopsidales) can stand three feet tall, each is composed of a single, huge cell. Within, millions of nuclei, chloroplasts and mitochondria move about freely. This single-compartment architecture might suggest that such plants are particularly vulnerable to injury. In fact, these algae are quite robust: A plant can plug a wound in seconds and will in short order regenerate the lost tissue. Many species can even use a small bit of excised tissue to regenerates the rest of the plant. The ability to reproduce in this way offers these algae considerable competitive advantage over other marine organisms. In some settings where they have been accidentally introduced, notably the Mediterranean Sea, certain species of siphonous green algae have proved all too successful, displacing native marine flora over large areas.
Connect With Us:
An early peek at each new issue, with descriptions of feature articles, columns, and more. Every other issue contains links to everything in the latest issue's table of contents.
News of book reviews published in
and around the web, as well as other noteworthy happenings in the world of science books.
To sign up for automatic emails of the
American Scientist Update
issues, create an
, then sign up in the
My AmSci area
JSTOR, the online academic archive, contains complete back issues of American Scientist from 1913 (known then as the Sigma Xi Quarterly) through 2005.
The table of contents for each issue is freely available to all users; those with institutional access can read each complete issue.
View the full collection here.
Receive notification when new content is posted from the entire website, or choose from the customized feeds available.