写真: 地球 >> Africa >> ナミビア >> South >> Erongo

登録

  << Previous Next >>

a living fossil


a living fossil
写真に関する情報
著作権: michael shalter (retlash) Silver Note Writer [C: 1 W: 1 N: 67] (272)
ジャンル: Plants
メディア: カラー
撮影した年: 2013-03-01
カテゴリー: Desert
カメラ: Lumix FZ48
Exposure: f/5.0, 1/250 seconds
More Photo Info: [view]
Photo Version: Original Version
アップロードした日: 2013-03-28 11:01
ページビュー: 2441
ポイント: 2
[Note Guidelines] アーティストからのコメント
You are looking at a "fossil" plant that has not changed since the Jurassic period of the dinosaurs. It is endemic to the Namib desert (the oldest in the world) of Namibia and Angola. This is a female plant. No...not the bushy succulent, but the two-leafed thing at the base. A Welwitschia. It consists of only two leaves, a tap root and a base. The two leaves grow eventually to a length of 9 m and become frayed, split, and shredded. It is one of the few things on earth that can truly claim to be one of a kind. There is nothing like it.
Carbon dating tells us that, on average, welwitschias are 500-600 years old, although larger ones can be more than 2000 years old! The estimated life span is from 400 to 1500 years. Judging from the length of this one's leaves, it is at three times my age, or 210 years old. Needless to say, I took my hat off before I took her photo.


Only registered TrekNature members may rate photo notes.
Add Critique [Critiquing Guidelines] 
TrekNatureの登録されている会員だけ批評を書けます。
フォーラムのメッセージ
無い
メッセージを書くためにログインをしなくてはなりません。

Critiques [Translate]

interesting deseart species. an good specimen with excellent clarity. good work.

Calibration Check
















0123456789ABCDEF