Marine biological survey to establish the distribution and status of ...

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Table 2 Biotopes identified in the Sound of Canna in 2010 (all sampling methods) and their frequency of occurrence. Biotopes follow Connor et al., 2004 Key to biotope coding and table colours (coloured at habitat complex level) Rock biotopes (IR = infralittoral rock; CR = circalittoral rock) Sublittoral Sediment biotopes (SS) High energy infralittoral rock (HIR) High energy circalittoral rock (HCR) Sublittoral coarse sediment (SCS) Moderate energy infralittoral rock (MIR) Moderate energy circalittoral rock (MCR) Sublittoral sand (SSa) Low energy infralittoral rock (LIR) Low energy circalittoral rock (LCR) Sublittoral mud (SMu) Feature of infralittoral rock (FIR) Feature of circalittoral rock (FCR) Sublittoral mixed substrata (SMx) Examples IR.HIR = Habitat complex (level 3 in classification) Sublittoral macrophytes on sediment (SMp) IR.HIR.KFaR = Biotope complex (level 4 in classification) IR.HIR.KFaR.LhypR = Biotope level (anything longer = sub-biotope) Sublittoral biogenic reefs on seds (SBR) Biotope Description Count IR.HIR.KFaR.FoR Foliose red seaweeds on exposed lower infralittoral rock 10 IR.HIR.KFaR.LhypFa Laminaria hyperborea forest with a faunal cushion (sponges and 3 polyclinids) and foliose red seaweeds on very exposed upper infralittoral rock IR.HIR.KFaR.LhypR Laminaria hyperborea with dense foliose red seaweeds on exposed 4 infralittoral rock IR.HIR.KFaR.LhypR.Ft Laminaria hyperborea forest with dense foliose red seaweeds on 7 exposed upper infralittoral rock IR.HIR.KFaR.LhypR.Pk Laminaria hyperborea park with dense foliose red seaweeds on 3 exposed lower infralittoral rock IR.HIR.KSed.LsacSac Laminaria saccharina and/or Saccorhiza polyschides on exposed 1 infralittoral rock IR.HIR.KSed.Sac Saccorhiza polyschides and other opportunistic kelps on disturbed 1 sublittoral fringe rock IR.HIR.KSed.XKScrR Mixed kelps with scour-tolerant and opportunistic foliose red 4 seaweeds on scoured or sand-covered infralittoral rock IR.MIR.KR.Lhyp Laminaria hyperborea on tide-swept, infralittoral rock 3 IR.MIR.KR.Lhyp.Ft Laminaria hyperborea forest and foliose red seaweeds on moderately 3 exposed upper infralittoral rock IR.MIR.KR.Lhyp.GzFt Grazed Laminaria hyperborea forest with coralline crusts on upper 5 infralittoral rock IR.LIR.K.LhypLsac Mixed Laminaria hyperborea and Laminaria saccharina on sheltered 3 infralittoral rock IR.LIR.K.LhypLsac.Ft Mixed Laminaria hyperborea and Laminaria saccharina forest on 1 sheltered upper infralittoral rock IR.LIR.K.Lsac Laminaria saccharina on very sheltered infralittoral rock 3 IR.LIR.K.Lsac.Ft Laminaria saccharina forest on very sheltered upper infralittoral rock 1 CR.HCR.XFa.CvirCri Corynactis viridis and a mixed turf of crisiids, Bugula, Scrupocellaria, 4 and Cellaria on moderately tide-swept exposed circalittoral rock CR.HCR.XFa.SpAnVt Sponges and anemones on vertical circalittoral bedrock 1 CR.HCR.XFa.SpNemAdia Sparse sponges, Nemertesia spp. and Alcyonidium diaphanum on 2 circalittoral mixed substrata CR.HCR.XFa.SwiLgAs Mixed turf of hydroids and large ascidians with Swiftia pallida and 1 Caryophyllia smithii on weakly tide-swept circalittoral rock CR.MCR.EcCr.CarSwi Caryophyllia smithii and Swiftia pallida on circalittoral rock 9 CR.MCR.EcCr.FaAlCr Faunal and algal crusts on exposed to moderately wave-exposed 6 circalittoral rock CR.MCR.EcCr.FaAlCr.Adig Alcyonium digitatum, Pomatoceros triqueter, algal and bryozoan 2 crusts on wave-exposed circalittoral rock CR.MCR.EcCr.FaAlCr.Sec Alcyonium digitatum with Securiflustra securifrons on tide-swept 3 moderately wave-exposed circalittoral rock CR.LCR.BrAs Brachiopod and ascidian communities 6 CR.FCR.Cv.SpCup Sponges, cup corals and anthozoans on shaded or overhanging circalittoral rock 2 19
Biotope Description Count SS.SCS.ICS Infralittoral coarse sediment 2 SS.SCS.CCS Circalittoral coarse sediment 8 SS.SCS.CCS.MedLumVen SS.SCS.CCS.PomB Mediomastus fragilis, Lumbrineris spp. and venerid bivalves in circalittoral coarse sand or gravel Pomatoceros triqueter with barnacles and bryozoan crusts on unstable circalittoral cobbles and pebbles SS.SSa.CFiSa Circalittoral fine sand 1 SS.SSa.CMuSa Circalittoral muddy sand 3 SS.SSa.IFiSa Infralittoral fine sand 3 SS.SSa.IFiSa.NcirBat Nephtys cirrosa and Bathyporeia spp. in infralittoral sand 1 SS.SSa.IMuSa.AreISa Spisula subtruncata and Nephtys hombergii in shallow muddy sand 5 SS.SSa.IMuSa.FfabMag Fabulina fabula and Magelona mirabilis with venerid bivalves and amphipods in infralittoral compacted fine muddy sand SS.SSa.IMuSa.SsubNhom Arenicola marina in infralittoral fine sand or muddy sand 1 SS.SSa.OSa.OfusAfil Owenia fusiformis and Amphiura filiformis in offshore circalittoral sand or muddy sand SS.SMu.ISaMu Infralittoral sandy mud 1 SS.SMu.CFiMu.MegMax Burrowing megafauna and Maxmuelleria lankesteri in circalittoral mud 31 SS.SMu.CFiMu.SpnMeg.Fun Seapens, including Funiculina quadrangularis, and burrowing megafauna in undisturbed circalittoral fine mud SS.SMu.CSaMu Circalittoral sandy mud 6 SS.SMu.CSaMu.AfilMysAnit SS.SMu.CSaMu.Lcelt Amphiura filiformis, Mysella bidentata and Abra nitida in circalittoral sandy mud Aggregations of the northern feather star Leptometra celtica on mixed muddy sediments SS.SMx.CMx Circalittoral mixed sediment 5 SS.SMx.CMx.ClloMx SS.SMx.CMx.ClloMx.Nem SS.SMp.Mrl.Pcal Cerianthus lloydii and other burrowing anemones in circalittoral muddy mixed sediment Cerianthus lloydii with Nemertesia spp. and other hydroids in circalittoral muddy mixed sediment Phymatolithon calcareum maerl beds in infralittoral clean gravel or coarse sand SS.SMp.KSwSS Kelp and seaweed communities on sublittoral sediment 1 SS.SMp.KSwSS.LsacR Laminaria saccharina and red seaweeds on infralittoral sediments 9 SS.SMp.KSwSS.LsacR.Gv Laminaria saccharina and robust red algae on infralittoral gravel and 1 pebbles SS.SMp.SSgr.Zmar Zostera marina/angustifolia beds on lower shore or infralittoral clean 6 or muddy sand SS.SBR.SMus.Afrag Aggregations of the fan mussel Atrina fragilis in poorly sorted mixed muddy sediments 16 3 1 1 7 6 12 5 24 3 9 20
Page 1 and 2: Scottish Natural Heritage Commissio
Page 4 and 5: COMMISSIONED REPORT Summary Marine
Page 6 and 7: Contents Page no. 1 Introduction ..
Page 8 and 9: Page no. Figure 28 Basking shark ho
Page 10 and 11: 1 INTRODUCTION 1.1 Background The S
Page 12 and 13: Rum has a far more complex structur
Page 14 and 15: In 1993 an SNH team conducted remot
Page 16 and 17: Richardson et al. (2004) showed tha
Page 18 and 19: 2 METHODS 2.1 Sampling strategy The
Page 20 and 21: Figure 6 Shallow water video statio
Page 22 and 23: Figure 8 Video stations surveyed in
Page 24 and 25: Each discrete grab sample was empti
Page 26 and 27: Following the survey, the infauna w
Page 30 and 31: Figure 11 2010 survey coverage off
Page 32 and 33: Circalittoral sandy mud (SS.SMu.CSa
Page 34 and 35: Description The distribution of the
Page 36 and 37: Figure 16 Division of the megafauna
Page 38 and 39: Some L. saccharina forest (IR.LIR.K
Page 40 and 41: Rhodophyllis werneri and Scinaia in
Page 42 and 43: Plate 8 A northern sea fan Swiftia
Page 44 and 45: Zostera marina/angustifolia beds on
Page 46 and 47: This is consistent with infaunal co
Page 48 and 49: the fan mussels ranged from an esti
Page 50 and 51: Plate 13 A small basking shark in C
Page 52 and 53: Distribution Depth range: 72 - 21
Page 54 and 55: Figure 31 Other species of interest
Page 56 and 57: coverage predictive biotope distrib
Page 58 and 59: 4 DISCUSSION This section presents
Page 60 and 61: Table 4 Summary of the assessment o
Page 62 and 63: The burrowed mud supported langoust
Page 64 and 65: in areas where it is protected from
Page 66 and 67: Table 6 Summary of a preliminary as
Page 68 and 69: 5.2 Future data review and biologic
Page 70 and 71: Ingle, R.W. (1996). Shallow-water c
Page 72 and 73: Appendix 1 Drop-down video and dive
Page 74 and 75: Date Station Time Latitude Longitud
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Date Station Time Latitude Longitud
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Table A1.2 Summary notes (biologica
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Tow Id no Tow Data point Date Tape
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Tow Id no Tow Data point Date A123
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Table A1.3 Summary of sampling unde
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Site No. Date Habitat Id (Site No:H
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Species MCS Code D D 1 _ 2 D D 1 _
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Species MCS Code Suberites ficus C2
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Species MCS Code Cryptopleura ramos
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Species MCS Code Scrupocellaria Y83
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Table A1.6 Species recorded (matrix
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Species MCS Code A 1 2 _ 1 A 1 2 _
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Table A1.7 Species recorded (matrix
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Species MCS Code Dive 1.1 Dive 2.1
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Table A2.1 Positional and depth inf
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Table A2.3 List of taxa identified
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Taxa MCS Code G 01 G 02 G 03 G 04 G
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Taxa MCS Code G 01 G 02 G 03 Diasty
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Taxa MCS Code G 01 Ascidiella sp. Z
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Figure A2.1 Bray-Curtis similarity
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Appendix 3 Macrofaunal and sediment
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Table A3.3 Results of univariate an
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Appendix 4 Photo and video logs - 2
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File Name Subject Site Name Island
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Table A4.2 Drop-down video log, 201
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File Name File size Folder Site No
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File Name File size Folder Site No
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