americana
Moderators: rjlittlefield, ChrisR, Chris S., Pau
- Wim van Egmond
- Posts: 826
- Joined: Tue Aug 15, 2006 9:28 am
- Location: Berkel en Rodenrijs, the Netherlands
- Contact:
americana
Finally a new image.
This is Micrasterias americana, a small desmid that used to be very rare here in the Netherlands. But it is becoming more and more widespread.
Funny, but it reminds me a bit of Coca Cola and McDonalds.
I stacked it from 5 or 6 images. 25X neofluar obj. darkfield. I agree with Wolfgang that manual stacking often works better with microsubjects but this one worked o.k.
Wim
This is Micrasterias americana, a small desmid that used to be very rare here in the Netherlands. But it is becoming more and more widespread.
Funny, but it reminds me a bit of Coca Cola and McDonalds.
I stacked it from 5 or 6 images. 25X neofluar obj. darkfield. I agree with Wolfgang that manual stacking often works better with microsubjects but this one worked o.k.
Wim
- Wim van Egmond
- Posts: 826
- Joined: Tue Aug 15, 2006 9:28 am
- Location: Berkel en Rodenrijs, the Netherlands
- Contact:
I'm not sure why it is becoming more numerous. Perhaps it is originally an american species that is introduced here (in the 1950s) and takes over the niche of a similar species.
http://www.desmids.nl/maand/english/juneng02.html
Wim
http://www.desmids.nl/maand/english/juneng02.html
Wim
- ralfwagner
- Posts: 441
- Joined: Sat Aug 05, 2006 8:34 am
- Location: Germany, Duesseldorf
- Contact:
Hello Wim,
I have found Micrasterias americana in the Netherlands, too. It was in an area called "White stone", near Roermond. The White stone area is a sand-heathland, or in German we name it a "Sandheide". I have posted a pic of that finding here in the forum:
http://www.photomacrography.net/forum/v ... php?t=1438
I have found Micrasterias americana in the Netherlands, too. It was in an area called "White stone", near Roermond. The White stone area is a sand-heathland, or in German we name it a "Sandheide". I have posted a pic of that finding here in the forum:
http://www.photomacrography.net/forum/v ... php?t=1438
----------------------
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
- Wim van Egmond
- Posts: 826
- Joined: Tue Aug 15, 2006 9:28 am
- Location: Berkel en Rodenrijs, the Netherlands
- Contact:
That is a great picture Ralph!!!!
Did you also find M. americana in Germany?
I have to travel an hour for 1 single little spot whre I can find many desmids. Most of the other useful areas are more towards the east of the country, which as some of you probably know is not that far, up to 2 hours. I live in a microscopic country Not strange that the microscopy hobby actually started here!
Wim
Did you also find M. americana in Germany?
I have to travel an hour for 1 single little spot whre I can find many desmids. Most of the other useful areas are more towards the east of the country, which as some of you probably know is not that far, up to 2 hours. I live in a microscopic country Not strange that the microscopy hobby actually started here!
Wim
- ralfwagner
- Posts: 441
- Joined: Sat Aug 05, 2006 8:34 am
- Location: Germany, Duesseldorf
- Contact:
Yes! My favorite place for Desmids is the "Köln-Wahner Heide", a heathland near the Cologne airport. Many parts of that area are used as a military training area and this is good for the Desmids. The tanks and the other military vehicles leave deep grooves that later become filled with water. Time does the rest. In many of these grooves I have found M. americana and several other Desmids. Look at my homepage for some examples: http://www.dr-ralf-wagner.de/zieralgen-englisch.htmlWim van Egmond wrote:
Did you also find M. americana in Germany?
Wim
----------------------
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
Ralf
http://www.lichenes.de
http://www.dr-ralf-wagner.de
http://www.youtube.com/user/drralfwagner
- Wim van Egmond
- Posts: 826
- Joined: Tue Aug 15, 2006 9:28 am
- Location: Berkel en Rodenrijs, the Netherlands
- Contact:
- Wolfgang Bettighofer
- Posts: 58
- Joined: Sun Mar 11, 2007 1:42 pm
- Location: Kiel, Germany
M. americana
Oh, what an interesting thread with nice photos! I was absent a few days...
Checking desmids literature Ruzicka and Lenzenweger wrote that habitat of M. americana is scattered in Central Europe. Boldt found it 1888 in Greenland, Skuja 1964 in swedish Lapland.
Did anyone find Micrasterias this year? My sphagnum pond is still empty, only a few Hyalotheca were found.
Cheers, Wolfgang
Checking desmids literature Ruzicka and Lenzenweger wrote that habitat of M. americana is scattered in Central Europe. Boldt found it 1888 in Greenland, Skuja 1964 in swedish Lapland.
Did anyone find Micrasterias this year? My sphagnum pond is still empty, only a few Hyalotheca were found.
Cheers, Wolfgang
- Wim van Egmond
- Posts: 826
- Joined: Tue Aug 15, 2006 9:28 am
- Location: Berkel en Rodenrijs, the Netherlands
- Contact:
Wolfgang, thank you for the info. I wonder where the name americana comes from.
Here in the Netherlands the desmids are in full bloom. But perhaps it depends on the spot.
I also found some time to do microscopy. So I hope to post some more. It seems like a quiet time in the forum. Nowadays there are more moderaters than people who post micrographs
Wim
Here in the Netherlands the desmids are in full bloom. But perhaps it depends on the spot.
I also found some time to do microscopy. So I hope to post some more. It seems like a quiet time in the forum. Nowadays there are more moderaters than people who post micrographs
Wim
- Wolfgang Bettighofer
- Posts: 58
- Joined: Sun Mar 11, 2007 1:42 pm
- Location: Kiel, Germany
Hi Wim,Wim van Egmond wrote:Wolfgang, thank you for the info. I wonder where the name americana comes from.
...
It seems like a quiet time in the forum. Nowadays there are more moderaters than people who post micrographs
Wim
I'll check from what americana is derived. Globally we know that, of course...
We're lucky to have moderators at the board who post micrographs
So long, Wolfgang