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

Alien Seaweed Has Arrived in Antarctica

Truth Dig 19 Jul 2018

A foreign invader, a species of alien seaweed, has managed to cross the oceans to reach the frozen Antarctic shores. So scientists may have to give up a cherished belief. that Antarctica is inviolate ... But the discovery of strands of kelp on an Antarctic beach – seaweed that may have drifted for considerable periods and a distance of 20,000 kms before becoming stranded far from home – brings an end to that belief ... Plastic next? ... ....

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Seaweed invading Florida beaches likely to worsen, could become worst bloom in history

The Arizona Republic 18 Jul 2018

Sargassum seaweed is piling up on beaches and choking nearshore waters ... ....

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Seaweed is taking over Florida beaches and it's likely to get worse

Orlando Weekly 17 Jul 2018

If the growth of seaweed this year gets as bad as expected, it could possibly be the worst in Florida's history. According to the Treasure Coast Palm , the recent growth of sargassum seaweed in June was three times larger than the biggest bloom ever recorded for that month, which was in 2015 ... ....

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Seaweed farming and its surprising benefits

CBS News 16 Jul 2018

Seaweed may be thought of as a nuisance, but an increasing number of fishermen, scientists and consumers are seeing it as a solution ... ....

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Along Maine’s northeastern coast, seaweed stirs an international controversy

Concord Monitor 16 Jul 2018

Cheryl Sawtelle grabs her binoculars - one of three pairs scattered on her living room couch – and peers at the water below her house on Cobscook Bay.“Look, they’re out there again,” she said. “We’ve lost. I’m telling you, it’s too late.”The objects of her distress are two wide skiffs, practically... ....

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The Monuments, Seaweed, Alma

CBS News 16 Jul 2018

The history and future of Confederate monuments; then, seaweed farming and its surprising benefits; and, the prodigy whose “first language” is Mozart ... ....

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Controversy Stirs Over Maine’s Seaweed

Lebanon Valley News 16 Jul 2018

Lubec, Maine — Cheryl Sawtelle grabs her binoculars — one of three pairs scattered on her living room couch — and peers at the water below her house on Cobscook Bay.“Look, they’re out there again,” she says. “We’ve lost. I’m telling you, it’s too late.” The objects of her distress are two wide skiff... ....

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Antigua to acquire machines to help fight sargassum seaweed

The Gleaner 16 Jul 2018

ST. JOHN’S, Antigua, CMC – Equipment to help in the fight against the sargassum seaweed is expected to arrive in Antigua shortly. This follows a request made to Martinique at the recently concluded Organisation of Eastern Caribbean ... ....

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Seaweed off Antarctica has travelled up to 12,500 miles across the Southern Ocean

The Daily Mail 16 Jul 2018

The continent of Antarctica is a vast wilderness with little life. The presence of seaweed, from 12,500 miles (20,000 km) away indicates that other plant and animal species could one day live there ... ....

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Along Maine's northeastern coast, seaweed stirs an international controversy

The Keene Sentinel 16 Jul 2018

In the boats, Kenny Sulkowski and Eric Newell are sweating as they tug at 10-foot rakes to cut and pull heavy seaweed aboard ... To Sawtelle, the presence of the men is a dire sign that landowners along the nation's most northeastern coastline are losing their battle over who owns the seaweed ... Francis Xavier University in Nova Scotia who has studied this seaweed for 30 years and laughs at the issue....

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Expensive species of edible seaweed discovered along east coast of India

Indian Express 14 Jul 2018

A team of Indian marine biologists has identified and discovered an expensive species of edible seaweed, known as ‘Green Laver’, from two distinct water bodies along the eastern coast of the country ... Globally, the Japanese are among the highest consumers of green laver, one of the most expensive seaweed variety in the world. Porphyra, the red algae, is the most expensive seaweed variety available....

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Tanzania:Seaweed Contribution to Zanzibar Economy Increases

All Africa 13 Jul 2018

[Citizen] Dar es Salaam -Seaweed is common name for countless species of marine plants and algae that grow in the ocean as well as in rivers, lakes and other water bodies ... ....

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Hatteras 'seaweed'? Man charged with growing pot on federal land

Star News 13 Jul 2018

An Ocracoke man has been arrested on federal charges for growing weed among the sea oats inside the Cape Hatteras National Seashore.The U.S Attorney’s office for North Carolina’s Eastern District in Raleigh said in a release that James Daniel Garrish III was arrested Tuesday and charged with cultivating marijuana on federal property ... ....

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