Wednesday, 15 February 2017

An AMAZING time at the beach

Hit the beach today. That was it. No work, no hills, no woods, no nuffin' - just the beach. I was there for hours n' hours and oh boy did I ever have a fun time!

I concentrated on seaweeds (naughty word) marine alga and surprised myself by finding SEVEN new ones for my list. I walked away from a couple of red alga that looked too nondescript to even bother with (plus all the pink encrusting ones, Lithophyllums I believe), but basically grilled the rest including a few green ones that required the microscope to clinch an ID. Ok, so I'll just whack up pics with captions, lots of pics on this post!

Prasiola stiptata in situ
Prasiola stiptata habbo shot - higher than the other species, often found where birds sit and crap.
Prasiola stipata - noticeable stipe which runs into blade, often several arise from a communal holdfast
Blidingia minima in situ where a freshwater burn runs across the rocks
Blidingia minima - cells not running in parallel rows (trust me...) hence not B.marginata
Cladophera rupestris - do-able on colour alone, but angle of branching and diagonal joins important too.
Choreocolax polysiphonia -  it's the pale 'galls' on the Polysiphonia lanosa
This was my find of the day - a truly tiny epiphytic colourless red alga that lives epiphytically on an epiphytic red alga, amazing! Took a lot of hard squinting to finally find some, then found several clumps on this one alga. Really pleased with this, a targeted search successfully completed. Talking of targeted searches, here are a couple more than worked out rather nicely

Ptilota gunneri - growing on a Cuvie stipe, just like it's meant to!
Elachista fusicola - growing here on Bladder Wrack
Elachista fusicola - microscope pic (and hence duff...)
Membranoptera alata - epiphytic on Cuvie stipes
Blimey, I never knew we had so many epiphytic marine algae, it's like a whole world full of bromeliads out there!!!

Membranoptera alata microscope pic. Note the tetrasporangial sori in the blade at the bottom of the image
Hildenbrandia rubra - the red scuzz on the pebble. Massively prevalent across Uig Beach!
They were the lifers, add to that a host of other species that I've already seen and I was having a whale of a time. Didn't even fall over despite schlomping through acres of wrack! So that's seven new alga, but I also managed a new lichen. Massively common in this habitat, I have to thank Ali for the heads-up (saw it on his blog...) Despite it being very common I managed the worst pics ever....

Verrucosia mucosa - note the pale outline to the thallus. Proper shite shot, huh?
I found a few other bits n bobs amongst the weed. As instructed by Steve Trewhella, I brought a tray with me this time and duly found another mollusc blob. Whack it in the tub and hey presto it grows horns and gills!

I don't care what the experts say, I reckon this is Doris pseudoargus!
Also found this fella under a rock. Talk about slippery as an...oh....oh right, now I get it

Atlantic Eel Anguilla anguilla - note the Hildenbrandia rubra (red scuzz) on the pebble. Common as muck!
Managed to inadvertantly bring this chap home with me, hiding away amongst a clod of Cladophera. The shape of the telson (last segment of the body, or 'tail' if you like) is crucially important when identifying this genus of marine isopods.

Idotea granulatus - commonest of the bunch but new for me (it's my 4th of the genus...)
Other things of interest included some amazing-looking sponges. My sense of smell is pretty poor (although I smell strongly if that means anything?) and I was unable to detect any bleach-like or bread-like smells emanating from this specimen. I suspect Breadcrumb Sponge but without microscopically checking the spicules it's a bit of a guessing game. Hence it's not on my list...yet

Probably Breadcrumb Sponge Halichondria panicea, but possibly not
And I found this dainty wee thing. No idea which species, a quick (2hr...) blast through various websites provided few clues. My good mate and fellow PSL weirdo Danny Cooper wisely counselled "anemones are a nightmare. Find a marine biologist or ignore them." If you are a marine biologist who knows the species, please do leave a comment!

I dunno, question is - do you?
Back at the top of the beach I found this lichen growing in mortar, possibly Collema cristatum (Ali, care to comment?) EDIT: The man from Del Fife, he say 'yes!'



1 comment:

  1. How good V.mucosa looks depends mostly on substrate. Blame the rock ;) I'd be happy to record that as cristatum I reckon. I'll definitely be taking a tray next time I go to the shore. Turns out marine inverts can respond quite badly to being popped in alcohol and can be quite delicate. I'd love to have a nice picture of a scaleworm but ...

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