Seaweed

Seaweed refers to several species of macroscopic, multicellular, marine algae that live near the seabed (benthic).

The term includes some members of the red, brown, and green algae. Seaweeds can also be classified by use (as food, medicine, fertilizer, filtration, industrial, etc.). The study of seaweed is known as phycology.

Taxonomy

A seaweed may belong to one of several groups of multicellular algae: the red algae, green algae, and brown algae. As these three groups do not have a common multicellular ancestor, the seaweeds are in a polyphyletic group. In addition, some tuft-forming bluegreen algae (Cyanobacteria) are sometimes considered to be seaweeds — "seaweed" is a colloquial term and lacks a formal definition.

Structure

Seaweeds' appearance somewhat resembles non-arboreal terrestrial plants.

thallus: the algal body

lamina or blade: a flattened structure that is somewhat leaf-like
- sorus: a spore cluster
- on Fucus, air bladder: a floatation-assisting organ on the blade
- on kelp, float: a floatation-assisting organ between the lamina and stipe
stipe: a stem-like structure, may be absent
holdfast: a specialized basal structure providing attachment to a surface, often a rock or another alga
haptera: a finger-like extension of the holdfast anchoring to a benthic substrate

This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Seaweed

Latest News for: Seaweeds

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Aggressive seaweed smothers one of world's most remote reefs

The Morning Journal 11 Jul 2020

HONOLULU — Researchers say a recently discovered species of seaweed is killing large patches of coral on once-pristine reefs and is rapidly spreading across one of the most remote and protected ocean environments on earth ... Dives along the outer reef of the 15-mile atoll revealed the seaweed in varying densities and depths....

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Recipe: How to whip up a delicious two-course lunch with locally foraged seaweed

The Courier 10 Jul 2020

In this month's foraging guide we took a look at seaweed. Here Jayson Byles of East Neuk Seaweed shows us how to cook up a quick and easy lunch with the key ingredient ... ....

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Extremely Aggressive Seaweed Just Ate an Entire Coral Reef

Treehugger 09 Jul 2020

In a study published this week in the journal PLOS One, researchers at the University of Hawaii describe a hyper-aggressive new breed of seaweed that chokes out coral ... "This is a highly destructive seaweed with the potential to overgrow entire reefs," study co-author Heather Spalding tells the Associated Press....

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Scientists warn new aggressive seaweed is killing Hawaiian coral reefs

Deutsche Welle 08 Jul 2020

A new species of algae is destroying large patches of once-vibrant reef in one of the most remote ocean sanctuaries on earth. Experts have warned that the phenomena could become an ecological and economic 'disaster.' ... ....

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Aggressive seaweed smothers reef in Northwestern Hawaiian Islands

Star Advertiser 08 Jul 2020

Researchers say a recently discovered species of seaweed is killing large patches of coral on once-pristine reefs and is rapidly spreading across one of the most remote and protected ocean environments on earth ... ....

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Newly-discovered seaweed species threatens protected coral reef

Sky News 08 Jul 2020

A newly-discovered species of seaweed is spreading rapidly and killing large patches of coral in one of the most protected ocean environments in the world, researchers have said ... ....

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New species of seaweed smothering remote reefs

Fort Wayne Journal Gazette 08 Jul 2020

Researchers say a recently discovered species of seaweed is killing large patches of coral on ......

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This seaweed is aggressively smothering one of world's most remote reefs

Hindustan Times 08 Jul 2020

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A new species of seaweed are covering and killing coral in the Northwestern Hawaiian Islands

Honolulu Star-Advertiser 08 Jul 2020

Researchers say a recently discovered ......

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Why summer is the season to forage for super-nutritious seaweed

The Courier 08 Jul 2020

Seaweed foraging expert Jayson Byles of East Neuk Seaweed gives an insight into how to harvest and cook with Scotland's most abundant coastal ingredient ... ....

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Aggressive seaweed smothers one of world’s most remote reefs

New York Post 08 Jul 2020

HONOLULU — Researchers say a recently discovered species of seaweed is killing large patches of coral on once-pristine reefs and is rapidly spreading across one of the most remote and protected ocean environments on earth ... Dives along the outer reef of the 15-mile (24-kilometer) atoll revealed the seaweed in varying densities and depths....

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Aggressive new seaweed is killing coral reefs in remote Hawaiian island chain

The Los Angeles Times 08 Jul 2020

Researchers say a recently discovered species of seaweed is killing large patches of coral on once-pristine reefs in the Northwestern Hawaiian Islands and is rapidly spreading across one of the most remote and protected ocean environments on Earth ... When seaweed attacks, corals call on goby fish to bite back....

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