EVENTS

Members Reports and Photos

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SATURDAY 19 OCTOBER 2013

NEWBRIDGE HOUSE, DONABATE

SNAILS & OTHER MOLLUSCS

LEADER: MARIA LONG

Newbridge House, Donabate, is in the custody of Fingal County Council. Much of the estate is managed as mown parkland with isolated specimen trees or small groves of beach and evergreen oak etc. in a mown environment. But there are residual areas of 'woodland'/ 'hedgerows' etc which in recent years have been subjected to a somewhat more benign regime.

Snails were quite scarce and this was not surprising as we discovered that the understorey litter and surfaces such as tree trunks were still very dry, as was a wet area which was dominated by Iris pseudacorus and without investigation might have been expected to yield Vertigo spp.

Maria had brought along part of her petri dishes collections for perusal which allowed us to view some of the species which eluded us during our field work. As for slugs, recently reinforced by the Roy Anderson's workshop, there have been changes in taxonomy and nomenclature which in part have been driven by work on their DNA.

Nevertheless the select group of malachologist found specimens of Clausilia bidentata, Discus rotundatus, Aegopinella nitidula, Cepea nemoralis, C. hortensis, Galba (Lymnaea) trunculata - considered to be an aquatic snail, Trochulus (Trichia) hispidus and T. striolatus and Balea cf. hyderi. The immigrant slug Limax maculatus was found under a beach tree but surprising the tree slug Lehmannia marginata (Limax marginatus) was not seen but perhaps it was too dry a day for tree trunking! 

     

               

     

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