Diatoms from Leisure Lake

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rnabholz
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Diatoms from Leisure Lake

#1 Post by rnabholz » Sat Dec 17, 2016 9:43 pm

As discussed on the Doing Diatoms thread, I was sent a sand sample by Lorez which he collected from Leisure Lake near Fremont, Nebraska.

I have cleaned the sample and prepared slides and have finally gotten some images. So here we go.

AO 10, Ortho Illuminator, 100x Plan Achro Iris Oil, 1096 Toric Darkfield Condenser, Canon 70D, Single Frames, captured under green filtration and converted to grayscale in post.
Centric 33µm
Centric 33µm
Leisure Lake Centric 3267.JPG (56.03 KiB) Viewed 4550 times
Cymbopleura 73µm
Cymbopleura 73µm
Leisure Lake Cymbopleura 3256.JPG (66.64 KiB) Viewed 4550 times
Unidentified 41µm
Unidentified 41µm
Leisure Lake Diatom 3246.JPG (57.64 KiB) Viewed 4550 times
Frustulia 106µm
Frustulia 106µm
Leisure Lake Frustulia 3272.JPG (60.61 KiB) Viewed 4550 times
Navicula 42µm
Navicula 42µm
Leisure Lake Navicula 3243.JPG (46.46 KiB) Viewed 4550 times
Last edited by rnabholz on Sat Dec 17, 2016 9:51 pm, edited 1 time in total.
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Re: Diatoms from Leisure Lake

#2 Post by rnabholz » Sat Dec 17, 2016 9:48 pm

a few more
Pinnularia 129µm
Pinnularia 129µm
Leisure Lake Pinnularia 3254.JPG (60.59 KiB) Viewed 4548 times
Unidentified 94µm
Unidentified 94µm
Leisure Lake Diatom 3260.JPG (53.68 KiB) Viewed 4548 times
Rhopalodia 80µm
Rhopalodia 80µm
Leisure Lake Rhopolodia 3048.JPG (48.26 KiB) Viewed 4548 times
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Re: Diatoms from Leisure Lake

#3 Post by zzffnn » Sat Dec 17, 2016 10:03 pm

Very nice, Rod!
The centric form and the unidentified 41 micron are very interesting and nice looking.
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Re: Diatoms from Leisure Lake

#4 Post by gekko » Sat Dec 17, 2016 10:40 pm

Superb work. Beautiful, very detailed images with excellent resolution.
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lorez
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Re: Diatoms from Leisure Lake

#5 Post by lorez » Sat Dec 17, 2016 10:59 pm

Very nice. It appears that Leisure Lake is a diatom hangout.
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Re: Diatoms from Leisure Lake

#6 Post by rnabholz » Sun Dec 18, 2016 12:40 am

gekko wrote:Superb work. Beautiful, very detailed images with excellent resolution.
Thanks Gekko.
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Re: Diatoms from Leisure Lake

#7 Post by rnabholz » Sun Dec 18, 2016 12:42 am

lorez wrote:Very nice. It appears that Leisure Lake is a diatom hangout.
Yes, you did well. Thanks for the interesting sample.

Rod
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Re: Diatoms from Leisure Lake

#8 Post by KurtM » Sun Dec 18, 2016 1:48 am

Wow, wonder what #3 is? Looks almost like a marine diatom with those huge pores...
Cheers,
Kurt Maurer
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email: ngc704(at)gmail(dot)com
https://www.flickr.com/photos/67904872@ ... 912223623/
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Re: Diatoms from Leisure Lake

#9 Post by rnabholz » Sun Dec 18, 2016 2:23 am

KurtM wrote:Wow, wonder what #3 is? Looks almost like a marine diatom with those huge pores...

I had the same reaction.

I couldn't conclusively ID it, but thought this might be a possibility

http://westerndiatoms.colorado.edu/taxa ... itriformis
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Re: Diatoms from Leisure Lake

#10 Post by billben74 » Tue Dec 20, 2016 10:49 pm

More subtle beauty.
Love the shape of Rhopalodia, almost like a clothes hanger.
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Re: Diatoms from Leisure Lake

#11 Post by rnabholz » Wed Dec 21, 2016 2:40 am

billben74 wrote:More subtle beauty.
Love the shape of Rhopalodia, almost like a clothes hanger.
Thanks Billben.

The Rhopalodia is really a beautiful form. Even more striking when you find them unseparated. Fantastic detail.

Rod
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