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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.
- 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
Seaweed influx a smelly welcome to Mexico
Canberra Times 14 Aug 2018
Large amounts of sargassum seaweed have washed up on the shores of Cancun forcing visitors to consider travelling elsewhere, ... ....
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Scott Cooper Miami Beach Discusses The Florida Seaweed Invasion
PR Newswire 13 Aug 2018
13, 2018 /PRNewswire/ -- A species of seaweed has been washing up on beaches across the Caribbean and South Florida. The amount of seaweed that piled up on Florida beaches during the month of June was three times larger than the previous record set three years earlier." According to lifestyle brand Scott Cooper Miami, "Sargassum is everywhere....
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Mexico to build seaweed barriers to protect beaches
St Louis Post-Dispatch
10 Aug 2018
MEXICO CITY (AP) — A Mexican environmental agency is constructing barriers at sea just beyond its famed Riviera Maya beaches to decrease the massive amounts of seaweed washing up onshore ... ....
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Traditional Danish houses thatched with tons of seaweed
Boing Boing 09 Aug 2018
The island village of L�s� off the Danish mainland has preserved houses built hundreds of years ago, when owners would thatch the roof with tons of seaweed. (more…) ... ....
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City Looks at Seaweed Removal Methods
Newport This Week 09 Aug 2018
Recently, Newporters have noticed the return of seaweed near and on the beaches ... The city has not had a method to scoop up tons of kelp, seaweed and other growths since its mechanical harvester stopped working in 2014 ... .......
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This side of Key West has a bin of rotting seaweed. Does it need a ...
The Miami Herald 07 Aug 2018
This quiet end of Key West’s Duval Street floods when it rains. And it’s a headache to navigate by car. A seaweed-filled garbage bin anchors the edge of the block, ... ....
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Seaweed consumption: remain vigilant to the risk of excess iodine intake
Public Technologies 07 Aug 2018
Over the last few years, seaweed has become increasingly common on our plates ... In view of the non-negligible risk of exceeding the upper limit of safe intake for iodine, the Agency advises against the consumption of seaweed and seaweed-based food supplements by certain at-risk populations, and recommends that regular consumers remain vigilant ... Its expert appraisal focused on iodine-containing seaweed likely to be consumed in France....
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Sargassum: The seaweed deluge hitting Caribbean shores
BBC News 06 Aug 2018
In Barbados, sargassum has been hitting southern and eastern shores since May ... "Sargassum mats can be up to seven metres deep." Stinking mess ... Public perception is a factor in the impact and some international headlines "shouting that the Caribbean is consumed in rotting seaweed" have not painted an accurate picture, Prof Oxenford says. New bloom. The reason southern and eastern shores are worst hit lies in the seaweed's source ... ....
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Seaweed or the scourge of the beachgoer
Portsmouth Herald
03 Aug 2018
Seaweed, it clings to your bathing suit, wraps around your toes and can make swimming nearly impossible.But what is it? Well, it is a plant, but unlike any land plant ... nutrients), blades (looking like leaves) and holdfasts (appearing to be roots but do not absorb water or nutrients; they just hold the seaweed in place).In common with plants, ......
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College, farmers to launch ‘seaweed lab’ in Maine
Fresno Bee 30 Jul 2018
A Maine college is partnering with a seaweed farm to launch a research and production facility in Bar Harbor. The partnership is between College of the Atlantic and Springtide Seaweed ... ....
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College, farmers to launch 'seaweed lab' in Maine
San Francisco Chronicle 30 Jul 2018
BAR HARBOR, Maine (AP) — A Maine college is partnering with a seaweed farm to launch a research and production facility in Bar Harbor. The partnership is between College of the Atlantic and Springtide Seaweed. Springtide is run by Sarah Redmond and Trey Angera, who plan to use the saltwater lab to culture seed stock for other seaweed farms in the North Atlantic....
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Two Seychellois with seaweed business vision say hurdles for companies remain high
Nation 30 Jul 2018
The two entrepreneurs have a vision for the island nation's agricultural sector to only use fertilisers and soil conditioning made from seaweed ... Bernard and Benjamin Port Louis told the Seychelles News Agency that they are encountering a lot of challenges to operating their seaweed factory ... Their seaweed factory, ‘Seaweed Seychelles’, is also producing pulverized cooked and dried seaweed for soil conditioning....
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