Important Plant Areas for algae - Natural History Museum

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Records contact: David Williamson; Desmidium records from Alan Joyce Site description Small loch (area 2.6 ha) and oligotrophic. Potential UK Red Data List desmids Cosmarium excavatum var. duplo-maius, Desmidium graciliceps, D. occidentale, Micrasterias conferta, Sphaerozosma vertebratum, Staurastrum sexangulare. European IPA for Desmids 5. Long Moss Tarn, Cumbria Grid ref: SD291936 Status: unknown Ownership: National Trust Qualifying criteria: A; B1, B2; C No. of species recorded: 70 plus No. of potential UK Red List desmids 5 Survey May 1981-Oct 1999 (6 visits) Records contact: David Williamson Site description The lake lies in a narrow, linear hollow scoured out by ice flowing south-southwest and parallel to Coniston water (see Haworth et al., 2003). It is a small (area 5.75 km²), shallow (
Potential UK Red Data List desmids Cosmarium phaseolus, Euastrum gayanum UK IPA for Desmids 7. Torver Tarn, Cumbria Grid ref: SD281926 Status: SSSI Ownership: National Trust Qualifying criteria: A; B1, B2; C No. of species recorded: 50 plus No. of potential UK Red List desmids 10 Survey period May 1981 – July 1990 (6 visits) Records contact: David Williamson Site description A small tarn just 1.5 m in maximum depth and slightly alkaline with a comparatively high in calcium (Haworth et al., 2003). The shallow extremities and the inflow on the north side are surrounded by Sphagnum peat. Its small catchment is mainly rock, bracken and peat. Potential UK Red Data List desmids Actinotaenium inconspicuum, Cosmarium regnesii, C. sportella, Groenbladia undulata var. perundulata, Hyalotheca mucosa, Staurastrum incus, S. glaber, S. laeve, S. longispinum, Sphaerozosma vertebratum. UK IPA for Desmids 8. Dock Tarn, Cumbria Grid ref: NY274144 Status: SSSI Ownership: unknown Qualifying criteria: A; B1, B2; C No. of species recorded: 50 plus No. of potential UK Red List desmids 13 Survey period Sept 1981 – May 1988 (5 visits) Records contact: David Williamson Site description One of the largest of the Cumbrian tarns (over 34 km²) lying in a moorland hollow on the upland between lower Eskdale and Dunnerdale. Its water has a low to circumneutral pH and is nutrient-poor (oligotrophic). The small catchment is of rough grassland, heather moor, rock outcrops and wet peat. Potential UK Red Data List desmids Actinotaenium capax, Cosmarium galeritum, C. regnellii, C. undulatum, C. excavatum, C. pseudonitidulum, Gonatozygon monotaenium, Hyalotheca mucosa, Staurastrum brasilense, S. longispinum, S. sebaldi, S. senarium, S. sexangulare. UK IPA for Desmids 9. Barngate Tarn ('Drunken Duck' tarn), Cumbria 74
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CONTENTS 1.0 SUMMARY ..............
Page 4 and 5:
LIST OF ABBREVIATIONS AONB Area of
Page 6 and 7:
2.0 IMPORTANT PLANT AREAS Juliet Br
Page 8 and 9:
3.2 UK ALGAL DIVERSITY Hardy & Guir
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inventory when more data become ava
Page 12 and 13: vii) Threatened or rare marine alga
Page 14 and 15: Table 4.1 Sites nominated as Europe
Page 16 and 17: 7 Great Yarmouth, Norfolk 9 Thames
Page 18 and 19: 22 Kimmeridge Ledges 23 Weymouth, D
Page 20 and 21: Pringsheimiella scutata 33 Ilfracom
Page 22 and 23: 52 Lamlash Bay, Arran, Argyll NS030
Page 24 and 25: 82 Strangford J589496 Lough, Co. Do
Page 26 and 27: 17 Hayling Island/ Solent/ Portsmou
Page 28 and 29: 4.32 Determining a list of ‘rare
Page 30 and 31: specimen in specimen in BM BM Litho
Page 32 and 33: Hincksia secunda (Kützing) P.C. Si
Page 34 and 35: Table 4.5 Assessment of the proport
Page 36 and 37: 4.4 DISCUSSION This is the first ti
Page 38 and 39: 4.5 RECOMMENDATIONS • A number of
Page 40 and 41: Information from report on UK stone
Page 42 and 43: 5.41 Criterion A - threatened speci
Page 44 and 45: Table 5.4 Sites nominated as Europe
Page 46 and 47: Table 5.6 Potential UK IPAs (areas/
Page 48 and 49: 6.0 ACKNOWLEDGEMENTS We wish to exp
Page 50 and 51: 8.0 APPENDIX - FRESHWATER ALGAE 8.1
Page 52 and 53: Cosmarium logiense 0 + Cosmarium ni
Page 54 and 55: Cosmarium phaseolus elevatum, minus
Page 56 and 57: Staurastrum elongatum 4 + Staurastr
Page 58 and 59: Cosmarium boeckii 36 + Cosmarium br
Page 60 and 61: Staurastrum spongiosum perbifidum 1
Page 64 and 65: Grid ref: NY351011 Status: unknown
Page 66 and 67: No. of potential UK Red List desmid
Page 68 and 69: published (Duthie, 1965) hence its
Page 70 and 71: Site description A small freshwater
Page 72 and 73: Status: Ownership: Qualifying crite
Page 74 and 75: 39. Wicken Fen, Cambrideshire Grid
Page 76 and 77: 9. REFERENCES Anand, P.L. 1937. A t
Page 78 and 79: Jewson, D. H., Lowry, S. F. & Bowen
Page 80 and 81: Woodhead, N. & Tweed, R.D. 1954. Th
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Important Plant Areas for algae - Natural History Museum

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