Macro Algae and P/NO3

[Mr31415]

Thanks again guys.

Rhodymenia - yes it is very much 3D - it is soft and round, and if you squeeze it it pops open. Very much like a flattish balloon you blow up - it is not cylindrical but also not flat... I had a look here and it looks identical to

Sebdenia flabellata

taxiformis - here is a closeup, maybe it helps?

Actually many years ago on RAMAR we had a troll do stuff like that.

I don't have time to be a troll!!! Promise!

 

[Boomer]

Ah, those cell ends are not flat and have offset

 

[LeslieH]

I'm still not convinced but that really doesn't matter, does it? As one of my favorite polychaete people once said "Taxonomists are frequently wrong. Only the organisms really know who they are." :lol:

As for the mystery thing, well, ?????? it still looks like a piece of an echinoderm to me. There are also sea pens and other cnidarians that have that articulated appearance.

 

[Boomer]

We are all often wrong :lol: Yes, Organisms always know who they are This post proves it.

When ever I send a perfect pic of an anemone to Dr. Daphne Fautin, she says, "Boomer, I can not tell what it is I need the animal" When we send a perfect pic of a red algae to Dr. Isabella Abbottat, at U of Hawaii, she says "send me a sample" We sent her 3 and she is sitll not sure. Some kind of aquarium morph she thinks.

still looks like a piece of an echinoderm to me.

Stalks crinoids are extinct but that Articulata group would look like that.


























































I just could not let that go by :lol:

But I did find this but no name

 

[LeslieH]

It's terrible when you have to have the last word, isn't it? :lol: Oh well, at least it's good for increasing post counts

Stalked crinoids are still around. Scientists have even found one that can walk away from predators - not quite as good as having some dynamite handy but still useful... :blown: http://environment.newscientist.com/channel/earth/deep-sea/dn8168

 

[Boomer]

We are both last word freaks :lol:

Yes, I say that ones sister species also, Neocrinus decorus (Isocrinidae).

You missed my joke on extinct There are a few species. They are mentioned in my invert books.

I have a few stalked crinoids in my fossil collection.


Better pic

Cool movie you led me to..........thanks
http://www.sciencenews.org/articles/20051022/crawler.mov

increasing post counts

Ask Melev about that. We have threads on him and his means of increasing posts counts:lol:

 

[Mr31415]

Leslie - does this help? Took some more pictures of my pink algae...

 

[LeslieH]

Yes, it really does, many thanks. The Falkenbergia stage is only 3 cells in cross section and the top two photos clearly show 3 cells. The earlier ones weren't as clear. So Boomer, I bow to your superior taxonomic skills! :beer:

 

[Boomer]

Thanks a lot Les for coming here. I really appreciate it. Now back to worm wrangling

 

[Mr31415]

Thanks.... BUT.... I do not get the "clearly shows 3 cells" part? What does a cell look like? Those black dots? Then I see one per "segment".... Please elaborate...

 

[LeslieH]

See how the lines define rectangular segments with pointed ends? Each box is one cell. If you cut a cross section of a branch you'd see 3 curved ovals around a central core; looking at each branch lengthwise we see 2 cells alternating with 1 cell because of the way they're lined up. If there were 4 cells then we'd always see 2 cells lined up end to end. The black dots are special structures called iodoques; these contain iodine or other halogenated bromines. In Falkbergia there's one prominent iodoque per cell.

How's your French? There's a very informative webpage at http://www.sb-roscoff.fr/Enseignement/fichephyco05.php?ident=9
with pictures, diagrams (including a cross section), & text