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Diatoms --part 1. introduction and collection of diatoms

  • published: 20 Aug 2010
  • views: 4057
  • author: diatomp

The video "Diatoms" is composed of three parts. Part 1: Diatoms are briefly introduced and the way to collect diatoms is demonstrated. (4 min 31sec) Diatom P...

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4:31
Di­atoms --part 1. in­tro­duc­tion and col­lec­tion of di­atoms
The video "Di­atoms" is com­posed of three parts. Part 1: Di­atoms are briefly in­tro­duced and...
pub­lished: 20 Aug 2010
au­thor: di­atomp
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1:07
Beau­ti­ful Di­atoms
Take the FREE tour of our beau­ti­ful new, 222-page ebook, SAV­ING GI­ANTS: Cul­ti­va­tion and Co...
pub­lished: 03 Dec 2010
au­thor: ipsf­dot­com
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1:16
Di­atoms in ac­tion
Di­atoms are uni­cel­lu­lar algae. They have beau­ti­ful or­nate cell walls made of sil­i­ca. Basic...
pub­lished: 02 Jul 2009
au­thor: Iain­p1211
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49:31
The Beau­ty of Di­atoms - Per­spec­tives on Ocean Sci­ence
Join Mark Hilde­brand on a jour­ney from the open wa­ters of the world's oceans to so­phis­ti­ca...
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5:37
Di­atoms. Part 2: Prepa­ra­tion of per­ma­nent slide)
The video "Di­atoms" is com­posed of three parts. Part 2: Prop­er prepa­ra­tion of di­atom slide...
pub­lished: 20 Aug 2010
au­thor: di­atomp
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5:39
Di­atoms. Part 3: Ob­ser­va­tion of di­atoms
The video "Di­atoms" is com­posed of three parts. Part 3. Di­atom species that vary with chan...
pub­lished: 20 Aug 2010
au­thor: di­atomp
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15:08
200g Reef Tank - Episode 24 - Cyano / Di­atoms ( part 1 )
Ahoy ship­mates well it's not been plain sail­ing this last cou­ple weeks. In fact I'm cur­ren...
pub­lished: 12 Dec 2013
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14:34
200g Reef Tank - Episode 25 - Cyano / Di­atoms ( part 2 )
Ahoy ship­mates happy 2014 to you all and wel­come back to cyano / di­atoms part 2. In this e...
pub­lished: 12 Jan 2014
au­thor: JDReef4220
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6:43
The Im­por­tant Lit­tle Life of Dylan Di­atom
Watch this 3D an­i­ma­tion of Dylan, a cen­tric di­atom in the Arc­tic Ocean. A float­ing plant a...
pub­lished: 08 Jul 2009
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2:10
Richard Dawkins: Di­atoms: The Evo­lu­tion of a New Species - Ne­bras­ka Vi­gnettes #5
Richard Dawkins ex­plains how mi­cro­scop­ic algae called Di­atoms unique­ly evolved in Yel­low­st...
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8:53
Day 11, di­atom bloom
Show­ing what a newly set up salt­wa­ter tank will do in the set­ting up stages. Di­atoms from ...
pub­lished: 03 Oct 2012
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4:57
Nano La­goon (14): BIG Di­atom Bloom
http://​www.​ipsf.​com Just ten days after adding the NanoS­tart mi­croor­gan­ism kit to our life...
pub­lished: 02 Feb 2009
au­thor: ipsf­dot­com
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3:01
Sci­ence Na­tion - Di­atom algae pop­u­la­tions tell a story about cli­mate change in Green­land
With sup­port from the Na­tion­al Sci­ence Foun­da­tion (NSF), lake ecol­o­gist Jas­mine Saros and ...
pub­lished: 04 Nov 2013
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1:05
Di­atoms
...
pub­lished: 20 Nov 2009
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Nah­nee Bori "Di­atoms" (Of­fi­cial Video) - Mr. Man
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0:30
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Diatoms are a major group of algae, and are one of the most common types of phytoplankton. Most diatoms are unicellular, although they can exist as colonies in the shape of filaments or ribbons (e.g. Fragilaria), fans (e.g. Meridion), zigzags (e.g. Tabellaria), or stellate colonies (e.g. Asterionella). Diatoms are producers within the food chain. A characteristic feature of diatom cells is that they are encased within a unique cell wall made of silica (hydrated silicon dioxide) called a frustule. These frustules show a wide diversity in form, but usually consist of two asymmetrical sides with a split between them, hence the group name. Fossil evidence suggests that they originated during, or before, the early Jurassic Period. Diatom communities are a popular tool for monitoring environmental conditions, past and present, and are commonly used in studies of water quality. Some diatoms are capable of movement via flagellation.

There are more than 200 genera of living diatoms, and it is estimated that there are approximately 100,000 extant species. Diatoms are a widespread group and can be found in the oceans, in freshwater, in soils and on damp surfaces. Most live pelagically in open water, although some live as surface films at the water-sediment interface (benthic), or even under damp atmospheric conditions. They are especially important in oceans, where they are estimated to contribute up to 45% of the total oceanic primary production.[citation needed] Spatial distribution of marine phytoplankton species is restricted both horizontally and vertically. Usually microscopic, some species of diatoms can reach up to 2 millimetres in length.




This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Diatom

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Clinton Richard Dawkins, FRS, FRSL (born 26 March 1941), known as Richard Dawkins, is a British ethologist, evolutionary biologist and author. He is an emeritus fellow of New College, Oxford, and was the University of Oxford's Professor for Public Understanding of Science from 1995 until 2008.

Dawkins came to prominence with his 1976 book The Selfish Gene, which popularised the gene-centered view of evolution and introduced the term meme. In 1982 he introduced an influential concept into evolutionary biology, presented in his book The Extended Phenotype, that the phenotypic effects of a gene are not necessarily limited to an organism's body, but can stretch far into the environment, including the bodies of other organisms.

Dawkins is an atheist, a vice president of the British Humanist Association, and a supporter of the Brights movement. He is well known for his criticism of creationism and intelligent design. In his 1986 book The Blind Watchmaker, he argued against the watchmaker analogy, an argument for the existence of a supernatural creator based upon the complexity of living organisms. Instead, he described evolutionary processes as analogous to a blind watchmaker. He has since written several popular science books, and makes regular television and radio appearances, predominantly discussing these topics. In his 2006 book The God Delusion, Dawkins contends that a supernatural creator almost certainly does not exist and that religious faith is a delusion—"a fixed false belief." As of January 2010 the English-language version has sold more than two million copies and had been translated into 31 languages.




This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Richard_Dawkins

This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.


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Diatoms --part 1. introduction and collection of diatoms

Diatoms --part 1. introduction and collection of diatoms