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Teasel


Teasel
Information sur la photo
Copyright: Greg Hume (greghume) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 212 W: 72 N: 575] (2160)
Genre: Plants
Média: Couleur
Date de prise de vue: 2004-12-05
Catégories: Flowers
Appareil photographique: Olympus C-8080 WZ
Exposition: f/4, 1/80 secondes
Versions: version originale, Workshop
Date de soumission: 2004-12-23 0:25
Vue: 3305
Points: 14
[Ligne directrice - Note] Note du photographe
Common teasel, Dipsacus sylvestris, endemic to Europe. It was introduced to North America possibly as early as the 1700's. Another species, Dipsacus fullonum, was introduced for use in raising the nap of cloth. Possibly, cut-leaved and common teasel were introduced with D. fullonum or introduced accidentally with other plant material from Europe. Teasel has spread rapidly in the last 20-30 years. This rapid range expansion probably was aided by construction of the interstate highway system. Teasel has colonized many areas along interstates. Common teasel sometimes is used as a horticultural plant, which has aided in expansion of its North American range. In particular, the use of teasel in flower arrangements has aided its dispersal, especially to cemeteries.
A single teasel plant can produce over 2,000 seeds. Depending on conditions, up to 30-80% of the seeds will germinate, so each plant can produce many offspring. Seeds also can remain viable for at least 2 years.
In North America, teasel is an aggressive exotic species that has the capacity to take over prairies and savannas if it is allowed to become established. Lack of natural enemies allows teasel to proliferate. If left unchecked, teasel quickly can form large monocultures excluding all native vegetation.
Exotic species are a particular problem in North America - extirpating native species. Notable examples include kudzu, honeysuckle, garlic mustard, and purple loosestrife.
Source: http://www.inhs.uiuc.edu/chf/outreach/VMG/teasel.html

red45, willie, Luc, coasties, saguzar trouve(nt) cette note utile
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Critiques [Translate]

  • Great 
  • Sneza Gold Star Critiquer/Silver Workshop Editor/Silver Note Writer [C: 94 W: 27 N: 16] (672)
  • [2004-12-23 2:23]

Good composition, sharpness, POV and DOF. Nice shot.

Composition: ***
Sharpness: ***
Color: **
DOF: ***
POV: ***
Note: **

This would have been very good with a darker BG.
TFS.

  • Great 
  • red45 Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 2636 W: 74 N: 9100] (31094)
  • [2004-12-23 4:32]

Pros: note, composition, artistic factor
Cons: noise

This is an exceptional post Greg. You made excellent use of the light.I like it so much i played around a bit in a workshop with it. I hope you dont mind

  • Great 
  • japie Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1814 W: 100 N: 1904] (5187)
  • [2004-12-23 16:52]

This is a good composition and I like the backlighting in this shot. Good sharpness too

Very well done and thanks for posting.

  • Great 
  • Luc Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1836 W: 303 N: 4300] (14767)
  • [2004-12-26 11:34]

A very special one, Greg. I like it very much. Simple and beautifull.
A great post: picture and note too.
Thanks

Very good macro Greg. Excellent detail captured here. POV superb. Very good note too. Good work. TFS

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