Desmid new to British Isles found in Clashmore Quarry

February 2nd 2016

Desmid new to British Isles found in Clashmore Quarry

On 13th April 2015 I collected a sample of desmids from the large pool in Clashmore Quarry (NC036316) for an old friend, David Williamson, the British expert on these microscopic algae.  The sample proved to be quite rich, and amongst the 38 forms identified by David was one, Closterium macilentum var. substriatum, a desmid new to the British Isles.  This paper, in the Quekett Journal of Microscopy, describes the new variety and is illustrated by David’s fascinating drawings.

More of David Williamson’s drawings can be seen on our website at this post Drawings of Desmids from Assynt by D. B. Williamson

Ian Evans

The Discovery of Closterium macilentum var. substriatum (Gronblad) Krieger in the British Isles (415KB pdf)

 

 

Report a Sighting

Recent Sightings

Eider

Three pairs Lochan na Leobaig, Culkein Drumbeg (Adam Mulholland) (14/05)

Greylag Goose

Four adult birds and three very small goslings, Loch Dhrombaig (DAH) (14/05)

White Wagtail

Three birds, Bay of Culkein (DAH) (13/05)

Dunlin

15 birds, Bay of Culkein (DAH) (13/05)

Robin

Adult and juvenile bird in Culkein Drumbeg garden (Corinne France) (12/05)

Lesser Black-backed Gull

Single adult bird bathing in fresh water, Clashnessie (DAH) (11/05)

Raven

Fledged young from nest on Suilven (AS) (10/05)

Tree Pipit

Singing male along river Kirkaig (AS) (10/05)

Map