Kelp

From Academic Kids

Kelp
Californian kelp forest
Californian kelp forest
Scientific classification
Kingdom:Protista
Division:Heterokontophyta
Class:Phaeophyceae
Order:Laminariales

Kelp are large seaweeds, belonging to the brown algae and classified in the order Laminariales. Despite their appearance they are not grouped with the normal aquatic or land plants (kingdom Plantae), but instead are included in either kingdom Protista or Chromista. There are about 30 different genera; sometimes members of the order Fucales are also considered kelp. Kelp grows in underwater forests (kelp forests) in clear, shallow, oceans, requiring nutrient rich water below about 20°C. It is known for its high growth rate - the genus Macrocystis grows up to 30 cm per day, to a total length of up to 60 metres.

Contents

Morphology

Kelp grows in the form of long stalks, with leaflike blades at regular intervals. Each blade is supported by a float. For more on its morphology, see seaweeds.

Prominent species

Uses

Kelp ash is calcined and rich in iodine and alkali. In great amount, kelp ash can be used in soap and glass production. Alginate, a kelp-derived carbohydrate, is used to thicken products like ice cream, jelly, and toothpaste, as well as in manufactured goods.

Interactions

Some animals are named after the kelp, either because they inhabit the same habitat as kelp or because they feed on kelp.

  • Kelp crab (Pugettia producta), the Pacific coast of North America.
  • Kelpfish (blenny) (e.g., Heterosticbus rostratus, genus Gibbonsia), the Pacific coast of North America.
  • Kelp Goose (kelp hen) (Ocydromus fuscus), New Zealander
  • kelp pigeon (sheathbill) (Chionis sp), Antarctic

See also

Template:Commonscat

it:Kombu ja:コンブ sv:Kelp

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