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blooming time, diatoms

 
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René



Joined: 08 Oct 2006
Posts: 427

PostPosted: Fri May 12, 2017 3:40 am    Post subject: blooming time, diatoms Reply with quote

Got a nice fresh sample in from a brackish harbour with a massive bloom of Coscinodiscus jonesianus var. commutatus, http://bibdigital.rjb.csic.es/ing/Libro.php?Libro=1006&Pagina=452

10x/0.4


20x/0.7


20x/0.7


20x/0.7, cleaned diatoms


It is nowadays renamed Coscinodiscopsis commutata, due to the two strange buds on the edge of the valve. The function of these processes is unknown. There are still plenty of things left to discover Very Happy

Best wishes, René
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Olympusman



Joined: 15 Jan 2012
Posts: 3394

PostPosted: Fri May 12, 2017 9:43 am    Post subject: Diatom bloom Reply with quote

Nice!

Mike
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Smokedaddy



Joined: 07 Oct 2006
Posts: 785
Location: Phoenix, Arizona

PostPosted: Fri May 12, 2017 10:08 am    Post subject: Reply with quote

Very nice.
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Jacek



Joined: 02 Oct 2011
Posts: 4694
Location: Poland

PostPosted: Fri May 12, 2017 12:22 pm    Post subject: Reply with quote

Nice
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WalterD



Joined: 06 Jul 2015
Posts: 285
Location: Rotterdam, the Netherlands

PostPosted: Fri May 12, 2017 11:20 pm    Post subject: Reply with quote

Lovely set with nice concentration of subject diatoms.
I also like the fact that one of them is tipped over allowing a side view, don't see that very often in diatom photographs. Very Happy
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carlos.uruguay



Joined: 23 Feb 2012
Posts: 4745
Location: Uruguay - Montevideo - America del Sur

PostPosted: Wed May 17, 2017 5:21 am    Post subject: Reply with quote

Super!
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KurtM



Joined: 16 Jul 2014
Posts: 47
Location: League City, Texas

PostPosted: Sat Jun 03, 2017 6:48 pm    Post subject: Reply with quote

Absolutely wonderful pix of them as living organisms - beautiful!
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Kurt Maurer
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Beatsy



Joined: 05 Jul 2013
Posts: 902
Location: Malvern, UK

PostPosted: Sat Jun 03, 2017 10:36 pm    Post subject: Reply with quote

Great set of images. Of all the things that fascinate me in nature (i.e. pretty much everything), diatoms are top of the pile. That sloppy, wet biology can consistently build such tiny, intricate and near-perfectly regular rigid glass structures is an utter wonder to me Shocked
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Cyclops



Joined: 05 Aug 2006
Posts: 2968
Location: North East of England

PostPosted: Tue Jun 06, 2017 2:11 am    Post subject: Reply with quote

They are superb!
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Olympusman



Joined: 15 Jan 2012
Posts: 3394

PostPosted: Tue Jun 06, 2017 9:27 am    Post subject: Diatoms Reply with quote

Another thing about diatoms is that when you look at Diatomaceous Earth which is millions of years old, you recognize contmeporary species.

Mike
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Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA
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hkv



Joined: 02 Jan 2013
Posts: 392
Location: Sweden

PostPosted: Sun Jun 11, 2017 2:23 pm    Post subject: Reply with quote

Super! Nice to see them in several different orientations
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discomorphella



Joined: 01 Oct 2006
Posts: 597
Location: NW USA

PostPosted: Mon Jun 12, 2017 12:27 am    Post subject: Reply with quote

The side-on views are really informative, in addition to the great shots of the large faces. I have managed to get a member of this genus (or one similar looking one from fresh water) under a SEM once (was able to sneak a pond specimen into my semiconductor SEM for our open house...) and the pores were not nearly as uniform as I'd thought from looking at optical microscope images.

David
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Marek Mis



Joined: 10 Jul 2010
Posts: 2442
Location: Suwalki, Poland

PostPosted: Tue Jun 13, 2017 2:32 am    Post subject: Reply with quote

Nice images of the very beautiful and interesting objects ! I love diatoms Smile

Marek
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RobertOToole



Joined: 17 Jan 2013
Posts: 383
Location: United States

PostPosted: Sun Aug 20, 2017 11:53 am    Post subject: Reply with quote

Hi René

The fine details are great, very interesting.

Thanks for sharing these.

Robert
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