s A Field Guide to the British Seaweeds - NMBAQC

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Specimens should be collected and retained in either small plastic containers or plastic bags but not kept in water as this may aid decomposition, they must be kept cold and damp. It is useful to take a knife and forceps for collecting certain types of plants. Also take a field sheet and species check-list (Tables 1 and 2). Within the field sampling sheet basic information is required on shore name, time, date and tidal height as well as the general nature of the shore. The shore descriptions box enables a rough description of the shore to be noted, e.g. shore wide with large intertidal with a sandy bay to the west consisting mainly of one large rock outcrop within which are variously sized rockpools and a small cave on the upper shore to the east. Dominant shore type mainly refers to the type of hard substrate such as the presence of large rock outcrops, shingle, boulders etc. Basic descriptions of dominant shore types Rock ridges/platforms/outcrops – these refer to large areas of stable hard substrata forming either ridges across the shore, large flat rocky areas (platforms) or stand alone areas of rock jutting seaward which may also be cut off at high tide (outcrops). Irregular rock – large rocky areas that cannot be described as any of the above. Boulders – these generally refer to large rocks with small boulders measuring >20cm in diameter, medium boulders >50cm and large boulders >100cm. Steep vertical rock – this is relatively self explanatory but may also include rocky cliff faces that are found at low water. Non specific hard substrate – this refers to small rocky areas and can include artificial hard substrate, slip ways and harbour walls. Pebbles/stones/small rocks – general rocks smaller than 20cm in diameter. Gravel/shingle – rocks smaller than 1cm in diameter. Subhabitat type refers to the smaller habitats within the full range of the shore and includes rockpools of various sizes, crevices, overhangs etc. The general comments section should be used to note if there is any large abundance of opportunists, freshwater seepage or any information of interest that may be important for future referrals. Reduced species list identification guide as required by the Water Framework Directive 7
Table 1: Field sampling sheet to record basic shore descriptions. General Information Shore Name Date Water Body Tidal Height Grid Ref. Time of Low Tide Shore Descriptions Examples of general shore descriptions are given on page 9 Presence of Turbidity Yes =0 Sand Scour Yes =0 No =2 (known to be nonanthropogenic) No =2 Chalk Shore Yes =0 No =2 Dominant Shore Type Subhabitats Rock Ridges/Outcrops/Platforms =4 Wide Shallow Rock Pools =4 Irregular Rock =3 (>3m wide and 6m long) =4 Steep/Vertical Rock =2 Deep Rockpools (50% >100cm deep) =4 Non-specific hard substrate =2 Basic Rockpools (none of the above) =3 Pebbles/Stones/Small Rocks =1 Large Crevices =3 Shingle/Gravel = 0 Large Overhangs and Vertical Rock =2 Dominant Biota Ascophyllum Fucoid Others habitats (please specify) =2 Rhodophyta mosaics Caves =1 Chlorophyta None =0 Mussels Total Number of Subhabitats Barnacles Limpets Periwinkles General Comments >4 3 2 1 0 To include comments on any anthropogenic influence, presence of artificial structures or sea defences. General uses and impacts Reduced species list identification guide as required by the Water Framework Directive 8
Page 1 and 2: A Field Guide to the British Seawee
Page 3 and 4: INTRODUCTION The EU Water Framework
Page 5 and 6: - Turfs of mixed species including
Page 7: Some species have distinct vertical
Page 11 and 12: Table 2: Species lists for each of
Page 13 and 14: The varieties of algae forms are br
Page 15 and 16: Special features that need to be co
Page 17 and 18: • Reproductive structures - these
Page 19 and 20: Axial cell • Distal- Towards the
Page 21 and 22: A FIELD KEY TO THE BRITISH SEAWEEDS
Page 23 and 24: Rhodophyta The red algae exhibit a
Page 25 and 26: Group A 1. Plants completely flatte
Page 27 and 28: Phaeophyta Species Group A Plants a
Page 29 and 30: 8. Thallus consisting of a large wi
Page 31 and 32: Group D 1. Plant dichotomously bran
Page 33 and 34: Group A 1. Plant calcareous……
Page 35 and 36: 10. Plant completely flattened ofte
Page 37 and 38: 11. Plant black and wiry with disc-
Page 39 and 40: 3. Plant generally found attached t
Page 41 and 42: Browns Alaria esculenta Ascophyllum
Page 43 and 44: Ceramium nodulosum Ceramium shuttle
Page 45 and 46: Polysiphonia fucoides Polysiphonia
Page 47 and 48: Blidingia sp. This is a tubular and
Page 49 and 50: Chaetomorpha linum This is an unbra
Page 51 and 52: Chaetomorpha melagonium This is an
Page 53 and 54: Enteromorpha sp. A tubular plant wh
Page 55 and 56: Rhizoclonium tortuosum Plant consis
Page 57 and 58: Sykidion moorei Plant consisting of
Page 59:
Ulva lactuca A flat foliose plant t
Page 62 and 63:
Ascophyllum nodosum Frond very long
Page 64 and 65:
Chordaria flagelliformis Plant ofte
Page 66 and 67:
Desmarestia aculeata Frond often qu
Page 68 and 69:
Ectocarpus sp. Fine filamentous for
Page 70 and 71:
Fucus sp. Plants tough, cartilagino
Page 72 and 73:
Laminaria sp. Thick leathery, very
Page 74 and 75:
Litosiphon laminariae Epiphytic pla
Page 76 and 77:
Pilayella littoralis Fine filamento
Page 78 and 79:
Scytosiphon lomentaria Plant charac
Page 80 and 81:
Spongonema tomentosum Fine and fila
Page 82 and 83:
Ahnfeltia plicata Plant completely
Page 84 and 85:
Calcareous encrusters Calcareous en
Page 86 and 87:
Ceramium nodulosum This is a highly
Page 88 and 89:
Chondrus crispus This species is ca
Page 90 and 91:
Cystoclonium purpureum This is a fi
Page 92 and 93:
Erythrotrichia carnea This is a sma
Page 94 and 95:
Gelidium sp. Gracilaria gracilis Sp
Page 96 and 97:
Heterosiphonia plumosa Plant filame
Page 98 and 99:
Lomentaria clavellosa This plant is
Page 100 and 101:
Hypoglossum hypoglossoides This spe
Page 102 and 103:
Melobesia membrancea This is a smal
Page 104 and 105:
Osmundea hybrida and Osmundea pinna
Page 106 and 107:
Phyllophora sp. Plant tough, cartil
Page 108 and 109:
Polysiphonia fucoides Plants are ge
Page 110 and 111:
Porphyra species These plants are f
Page 112:
Rhodothamniella floridula This plan
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s A Field Guide to the British Seaweeds - NMBAQC

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