Download
giant sequoia sequoidendron giganteum n.
Skip this Video
Loading SlideShow in 5 Seconds..
Giant Sequoia ( Sequoidendron giganteum ) PowerPoint Presentation
Download Presentation
Giant Sequoia ( Sequoidendron giganteum )

Giant Sequoia ( Sequoidendron giganteum )

264 Vues Download Presentation
Télécharger la présentation

Giant Sequoia ( Sequoidendron giganteum )

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Giant Sequoia (Sequoidendrongiganteum)

  2. One of three species of Redwood TreesCoast Redwood (Sequoia sempervirens)Dawn Redwood (Metasequoiaglyptostroboides)

  3. Taxonomy • Kingdom – Plantae (Plants0 • Phylum – Pinophyta (Conifer – needle bearing) • Class – Pinopsida (Coniger – evergreen needle) • Order – Pinales (cone bearing evergreens) • Family – Cupressaceae (Cypress family- flat needles) • Subfamily – Sequoioideae (Redwood subfamily) • Genus Sequoiadendron (giant sequoia family) • Species – S. giganteum

  4. Description;Worlds largest single trees by volume.Grow to an average height of 160-279 feet

  5. They can be 20 to 26 feet in diameter.Record trees have been measured at 311 feet high and 56 feet in diameter.

  6. Giant Sequoia outside visitor’s center at Sequoia National Park

  7. The oldest known tree is 3,500 years old.

  8. The bark is fibrous, furrowed, and may be 3 feet thick. It provides protection from fire.

  9. The leaves are evergreen, awl-shaped, 3-6 mm long and arranged spirally on the stems.

  10. The seed cones are 4-7 cm long (1.6 to 2.8 inches) and mature in 18-20 months.They typically remain closed for years.

  11. They reproduce by seed. A large tree can disperse up to 300,000 to 400,000 seeds/year.Fire opens cones and allows for seeds to be rapidly dispersed.

  12. They occur in scattered groves, with a total of 68 groves.They like a humid climate with a dry summer and snowy winters.They prefer to grow at altitudes of 5,660 to 7,050 feet

  13. Because of fire suppression the trees are having a hard time reproducing and are currently declining in numbers.

  14. The tree is widely planted in Europe, NewZealand and western north america. It has a harder time in the eastern united states.

  15. 60 year old trees in Germany

  16. General Sherman – largest by volume

  17. General Grant – 2nd largest tree

  18. The Lincoln Tree- 4th largest

  19. Bibliography • En.wikipedia.org/wiki/Sequioadendron_giganteum • www.fs.usda.gov.sdquoia.gov. • Library.thinkquest.org/J002415 • Eol.org/pages/323361/details • www.arkive.org> Species > Plants and algae