Author Topic: August 2023  (Read 20134 times)

Fons Baerken

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Re: August 2023
« Reply #165 on: August 24, 2023, 23:08:17 »
Cool Fons
I remember clearly the impression i got from the image with the columns

This is a slighly different, single image the one you refer to is a two images stitch! Thanks Paco!

Birna Rørslett

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Re: August 2023
« Reply #166 on: August 25, 2023, 00:07:51 »
I have signed up for pro bono work as a validator of aquatic plants for the National History Museum of Botany at the  University of Oslo. Got my security clearance and access key card today, so spent the entire day immersed -- literally -- in the herbarium. A quiet and if I'm allowed to say so, rather dusty, place. However, somebody has to do the job and I volunteered. No idea for how long the task will take, but I expect to be busy for some months at least. I have to go through around 10,000 collections. mainly Pondweeds (Potamogeton, Stuckenia, and Groenlandia).

A quick view of my working space there. Now it's between me, the monographs, the Leica binocular microscope (which is excellent), and the herbarium sheets.

golunvolo

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Re: August 2023
« Reply #167 on: August 25, 2023, 01:15:00 »
Birna, that sounds like a big project (understatement)

golunvolo

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Re: August 2023
« Reply #168 on: August 25, 2023, 01:15:49 »
Horses.

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Birna Rørslett

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Re: August 2023
« Reply #169 on: August 25, 2023, 09:58:58 »
Birna, that sounds like a big project (understatement)

Oh well. Somebody has to take on the challenge and it happened to be me....

Whether this will be tiresome or not depend on the error rate of previous determinations. I hope the error rate is <5%, but for some tricky species or hybrids it could be much higher. All those dubious specimens can require a lot of time in order to arrive at a certified identification.

The sheet in the photo carried a wrongly identified specimen, but getting the correct ID was a breeze (Potamogeton lucens => P. praelongus) in this case. The Pondweeds Potamogeton are my life-long friends.

Thomas Stellwag

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Re: August 2023
« Reply #170 on: August 25, 2023, 11:20:16 »
Oh well. Somebody has to take on the challenge and it happened to be me....

Whether this will be tiresome or not depend on the error rate of previous determinations. I hope the error rate is <5%, but for some tricky species or hybrids it could be much higher. All those dubious specimens can require a lot of time in order to arrive at a certified identification.

The sheet in the photo carried a wrongly identified specimen, but getting the correct ID was a breeze (Potamogeton lucens => P. praelongus) in this case. The Pondweeds Potamogeton are my life-long friends.

good luck, looks challenging with 10k weeds
Thomas Stellwag

Birna Rørslett

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Re: August 2023
« Reply #171 on: August 25, 2023, 12:42:33 »
good luck, looks challenging with 10k weeds

'Weed' is in the eye of the beholder :)

To me, they are old -- and often capricious -- friends.

Fons Baerken

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Re: August 2023
« Reply #172 on: August 25, 2023, 12:51:22 »
Question: Do pondweeds produce seed that travel by air?

Why do I ask i have a small pond with waterplants and pondweeds, and a frog! And i see pondweeds arrive now in several buckets!

Birna Rørslett

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Re: August 2023
« Reply #173 on: August 25, 2023, 15:13:59 »
They produce small drupes plus vegetative dispersal units. so easily disperse into new sites by water currents or birds.

Akira

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Re: August 2023
« Reply #174 on: August 25, 2023, 15:40:38 »
A huge UFO above the metropolis.
"The eye is blind if the mind is absent." - Confucius

"Limitation is inspiration." - Akira

Fons Baerken

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Re: August 2023
« Reply #175 on: August 25, 2023, 16:45:54 »
They produce small drupes plus vegetative dispersal units. so easily disperse into new sites by water currents or birds.

Thanks for the explanation!

Fons Baerken

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Re: August 2023
« Reply #176 on: August 25, 2023, 16:47:17 »
August 25

Windows

Zfc, Viltrox 56mm f/1.4

golunvolo

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Re: August 2023
« Reply #177 on: August 25, 2023, 22:56:10 »
Ready to play polo in south spain, August at 17:30h. You need some water

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Bent Hjarbo

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Re: August 2023
« Reply #178 on: August 25, 2023, 23:50:22 »
A parking lot in Gjøvik Norway after the storm Hans
I am taking a small Holliday I Norway to visit relatives.

John Geerts

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Re: August 2023
« Reply #179 on: August 26, 2023, 08:20:47 »
August 24

Returned from the printer, 5 photos on dibond for a small expo.

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Great. Fons