[x]
Create

Here is what users have to say about Diatom

useravatar
Entry added by CWAnswers Join us and contribute your knowledge as well.

Select content modules

for: Diatomic molecule

Welcome to CWAnswers

CWAnswers is your guide to the sprawling world wide web. The directory aims to provide a useful guide made by users. You can share your knowledge as well - simply sign up and edit your first entry. For questions just contact the team at support - at - cwanswers.com.

Weblinks for Diatom

Top 10 for Diatom

Things about Diatom you find nowhere else.

Comments about Diatom

We love comments and hate spam too. You can add your comment by clicking on 'open comment input' below.
Show/Hide

Images found for Diatom

Diatom 1Diatom 2Diatom 3
Diatom 4Diatom 5Diatom 6
Diatom 7Diatom 8Diatom 9

Wikipedia About Diatom

for: Diatomic molecule

Diatoms (Greek: (dia) = "through" + (temnein) = "to cut", i.e., "cut in half") are a major group of eukaryotic 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. Fragillaria), fans (Meridion), zigzags (Tabellaria), or stellate colonies (Asterionella). Diatoms are producers. 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, some quite beautiful and ornate, 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.

General biology

There are more than 200 genera of living diatoms, and it is estimated that there are approximately 100,000 extant speciesRound, F. E. and Crawford, R. M. (1990). The Diatoms. Biology and Morphology of the Genera, Cambridge University Press, UK.Canter-Lund, H. and Lund, J.W.G. (1995). Freshwater Algae, Biopress Limited. ISBN 0 948737 25 5.. 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 productionMann, D. G. (1999). The species concept in diatoms. Phycologia 38, 437-495.. Although usually microscopic, some species of diatoms can reach up to 2 millimetres in length.

Diatoms belong to a large group called the heterokonts, including both autotrophs (e.g. golden algae, kelp) and heterotrophs (e.g. water moulds). Their yellowish-brown chloroplasts are typical of heterokonts, with four membranes and containing pigments such as fucoxanthin. Individuals usually lack flagella, but they are present in gametes and have the usual heterokont structure, except they lack the hairs (mastigonemes) characteristic in other groups. Most diatoms are non-motile, although some move via flagellation. As their relatively dense cell walls cause them to readily sink, planktonic forms in open water usually rely on turbulent mixing of the upper layers by the wind to keep them suspended in sunlit surface waters. Some species actively regulate their buoyancy with intracellular lipids to counter sinking.

Search results for Diatom

California Academy of Sciences - Diatoms

North American Diatom Symposium ... International Society of Diatom Research - A site for information about the ... The Farlow diatom Collection at Harvard University ...research.calacademy.org/research/diatoms/

Diatom - CreationWiki, the encyclopedia of creation science

There has been a recent revision for the classification of the diatom. ... Consequently, the average size of diatom gets smaller as asexual reproduction is ...creationwiki.org/Diatoms

Diatom Filters

Vortex Diatom Filter Sale. The lowest pricing on the internet. ... In Fact, the company's Diatom Filter has been America's best selling aquarium ...www.diatomfilters.com/contents/en-us/d1.html

Reference for Diatom - Search.com

Diatom ... A characteristic feature of diatom cells is that they are encased within a ... Role of sinking in diatom life-history cycles : Ecological, evolutionary and ...www.search.com/reference/Diatom

Diatom.com: Custom Software Services and Consulting

Software Development and Consulting in the fields of distributed systems, networking ... © 2005, Diatom Software, Inc. work as though you live in the ...diatom.com/

Images found for Diatom

Diatom 1Diatom 2Diatom 3
Diatom 4Diatom 5Diatom 6
Diatom 7Diatom 8Diatom 9

News about Diatom

Diatom nanostructures bend light

BBC NewsMarine algae's clever light-scattering systems could be replicated in medical deviceshttp://news.bbc.co.uk/go/rss/-/2/hi/science/nature/7608369.s...

News about Diatom

Ancient whalers leave their mark on the north

Alaska ReportThis glass, or silicon dioxide, makes diatoms last hundreds of years; diatom skeletons are a major component of the sediment at the bottom of lakes. Smol and Marianne Douglas from the University of Toronto have sampled lakes and ponds in the high ... http://alaskareport.com/news98/x61654_whalers_alaska.htm

Climate Change Alters Base of Tahoe Food Web

PhysOrgHowever, the UC Davis researchers found that the warming of the lake changed not the overall biovolume but rather the relative populations of various diatom species. "There are greater numbers of small-sized diatom species in recent years than there ... http://www.physorg.com/news141926942.html

Complex Ocean Behavior Studied With 'Artificial Upwelling'

Science DailyIn previous field experiments, the researchers were able to create stage-one diatom blooms by mixing deep and surface water in large incubation bottles, but they need to conduct additional studies in the ocean to see if the second stage of blooms ... http://www.sciencedaily.com/releases/2008/09/080902143232.ht...

Diatom nanostructures bend light

BBC Science/NatureScientists have been inspired by the natural systems that are found in wide range of organisms - including peacocks, butterflies and beetles. These single-celled marine algae are found in almost all aquatic environments on Earth. When magnified, we ... http://news.bbc.co.uk/2/hi/science/nature/7608369.stm

Archaeological Glossary

China.Orgdiatom analysis: a method of environmental reconstruction based on plant microfossils. Diatoms are unicellular algae, whose silica cell walls survive after the algae die, and they accumulate in large numbers ... http://www.china.org.cn/english/features/Archaeology/98851.h...

Search results for Diatom

Center for Diatom Informatics

diatom.org. Diatoms are a group of microorganisms well-known for displaying an intricate and wonderous architectural beauty. However, there is more to a diatom than simply its ... http://DIATOM.ORG

Diatom Filters for Aquariums and Ponds

Welcome to Diatom Filters.com. A division of Aquatic-store.com We Are a Resller of these aquarium products. Here the Diatom Filter store we strive to give you detailed info on the ... http://www.diatomfilters.com/

diatom definition |Dictionary.com

Diatomaceous Earth Powder Safely control crawling insects in your home, lawn and garden. www.arbico-organics.comhttp://dictionary.reference.com/search?q=diatom

Diatom Merchant Services- Merchant Account and Credit Card Processing ...

Nova Diatom Merchant Services, located in the Atlanta, Georgia metro area, offers a comprehensive line of payment processing solutions for your business. We are a partner of Nova ... http://www.diatominc.com/

diatom - Hutchinson encyclopedia article about diatom

diatom. Microscopic alga found in all parts of the world in either fresh or marine waters. Diatoms consist of single cells that secrete a hard cell wall made of silica.http://encyclopedia.farlex.com/diatom
  • Recent
  • Mine
  • Watched
  • Commented
You must be logged in to perform this operation
You must be logged in to perform this operation

Search this site

Videos found for Diatom

Snail Slime

Snail SlimeWhat do get when you cross the world's most famous slowpoke with some of MIT's latest high-tech robotics? Anna Lee Strachan, an associate producer for NOVA scienceNOW, finds out....Flash - Video

Nobody Wants To - Clint & Castille

Nobody Wants To - Clint & CastilleContinuing to plunder the collected works of Neil Finn, we present for your listening pleasure... "Nobody Wants To" by Crowded House ( Clint And Castille cover version ) Please go...Flash - Video

Microscopic Life

Microscopic LifeThe microscopic life under the lens of the microscopeFlash - Video

Thank you all for your prayers and ...

Thank you all for your prayers and thoughts!!!I can't thank you all enough. All of your support helped us greatly get through this difficult time. This is the meaning of the community of you tube. Diagnosis description:...Flash - Video

NOVA's Snail Slime Vodcast

NOVA's Snail Slime VodcastWhat do get when you cross the world's most famous slowpoke with some of MIT's latest high-tech robotics? Anna Lee Strachan, an associate producer for NOVA scienceNOW, finds out....Flash - Video

Videos found for Diatom

moffatd404.mov

moffatd404.movWater Mite -2 - Getting tired or over heated!!! Ostracoda side view and The Red Colored Insect Larvae gives a Copepod a good wack!! Large, flexable spherical ciliate with diatom inside!!! Misc Fun Mov...quicktime: 3.1 MB w:336px - h:224px

antarctic.mov

antarctic.movClick here to view a Toro Diatomquicktime: 0.7 MB w:544px - h:544px

7.avi

7.aviOne Cyclidium ssp . a small ciliate with very long cilias http://www.microthele.it/filmati/7.avi A Ferrari Navicula ssp . diatom (usually diatoms motion is so slow...).avi: 0.4 MB w:480px - h:320px

diatom04.avi

diatom04.aviNaviculaavi: 1.4 MB w:360px - h:270px

diatom05.avi

diatom05.aviNaviculaavi: 1.4 MB w:360px - h:270px

Answers for Diatom

pitcherismeIs this a good adaptation for diatom?pitcherismeSure. The shell protects the cells against physical stress.LilyWhat is the scientific name for a diatom????LilyCyclotella stelligeracookies_rule_91What are 5 interesting facts about the micro-organisms euglena, rotifer and diatom?cookies_rule_91about euglena- flagella for locomotion,it is an autotroph,contractile vacuole for excretion, about diatoms-attractive colours,autotrophs,soviet_burritowhat is in the the cell wall of a diatom?soviet_burritoChitin - frankly I thought there was a silica base or something with more calcium.DesiIn a Diatom, do nutrients diffuse in directly from the surrounding water?DesiYes, in the case of some nutrients.
Contact Us[X]
Your name
Email
Subject
Your comment
[X]
Web, Images, Video, News and Answers Search Results are "Powered by Yahoo!"
Web, Images, News Search Results are "Powered by MSN"
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article .
Disclaimer: All other trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners.