Shallow sublittoral ecosystems in the Inner Hebrides

Mitchell, Roger; Earll, R.; Dipper, Frances

doi:10.1017/s0080455x00013394

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…But, it is not yet known whether these two species are generally typical for stony grounds in the southern North Sea, while there is some resemblance in species composition to the hard-bottom communities of the shallow sublittoral zone of the inner Hebrides (Mitchell et al, 1983).…”

Section: Discussionmentioning

confidence: 99%

The macrofauna of a stony sand area in the German Bight (North Sea)

Kühne

Rachor

1996

Helgolander Meeresunters

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The sublittoral macrofauna of the Steingrund, a stony area east-northeast of Helgoland, was investigated from May till October 1991 using a van Veen grab and a small dredge. The diverse endo-and epifauna of the sandy bottoms, pebbles and boulders of this Saalian end moraine comprised 289 taxa, whereby the polychaetes Magelona papillicornis, Lanice conchilega and Spiophanes bombyx dominated in terms of abundance. Species rare in the German Bight, such as the sponge Leucandra fistulosa, the sea urchin Echinus esculentus, and the sea anemone Haliplanella lineata, were also found. The two sample sets were processed separately with multivariate techniques, and differentiated on the basis of occurrence and numbers of the abundant species. The analysis of the grab samples revealed two types of the Tellina-fabula-community. These associations were differentiated by the presence of species of the coarse-sand-inhabiting Goniadefla-Spisulacommunity and were related to the distribution of the grain size of the sediment. Likewise, two epifaunal assemblages were distinguished. Sandy bottoms were characterized by Ophiura albida, l.uocarcinus holsatus and Pagurus bernhardus, while boulders and pebbles were covered by a varied sessile and mobile epifauna dominated by the sessile bryozoan Flustra foliacea and the mobile pantopode Aechelia echinata. Numerical density, biomass and annual production estimates are in the range of values determined for the macrobenthos of the German Bight, while annual P/B ratios mounted up to 5.

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Section: Discussionmentioning

confidence: 99%

The macrofauna of a stony sand area in the German Bight (North Sea)

Kühne

Rachor

1996

Helgolander Meeresunters

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“…Surveys carried out in more northerly parts of Britain, such as the Isle of Man (Kain, 1960), Argyll (Norton & Milburn, 1972), Mull (Price & Tittley, 1978), the Inner and Outer Hebrides (Norton et al, 1969;Norton & Powell, 1979;see Mitchell, Earll & Dipper, 1983, for references to unpublished reports) and the Shetland Isles (Tittley, Irvine & Jephson, 1976), show that although the seaweed floras of the west coast of Scotland and south-west Britain have close affinities, several species reach their recorded northern limits in Britain within the SWBSS area. These include all the species for which notes are given here, except Scinaia turgida (which reaches the Shetland Isles, including reports from northern coasts as Scinaia forcellata, see Maggs & Guiry, 1982a), Meredithia microphylla (also found in the Inner Hebrides, Mitchell et al, 1983, and three species which have been reported for the Isle of Man: Atractophora hypnoides (Dixon & Irvine, 1977), Carpomitra costata (Lodge, 1948) and Choristocarpus tenellus (Lodge, 1948). However, most of these …”

Section: Discussionmentioning

confidence: 99%

Notes on the distribution and ecology of some new and interesting seaweeds from south-west Britain

Hiscock¹,

Maggs

1984

British Phycological Journal

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“…By comparison however, the benthic faunal diversity of the o¡shore Scottish west coast has received comparatively little attention. Farrow et al (1979) investigated the benthic communities found between Colonsay, Islay and Jura while Mitchell (1983) investigated the shallow subtidal communities of the Inner Hebrides. Survey work was also conducted in the littoral zones throughout the Greater Minch area by Bishop & Holme (1980) and by Smith (1983).…”

Section: Introductionmentioning

confidence: 99%

Macro-infaunal biodiversity and analysis of associated feeding guilds in the Greater Minch area, Scottish west coast

Pinn

Robertson

2003

J. Mar. Biol. Ass.

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Survey work was carried out in the Greater Minch area on the west coast of Scotland in 1997. The survey covered an area of 17,000 km2, extending from Kinlochbervie in the north-east to the Stanton Banks in the south-west. Acoustic and ground-truth surveys were conducted using the seabed discrimination system RoxAnn© and underwater television cameras. This paper examines the macro infaunal component of the benthic community from 28 stations sampled throughout the region. From these, 198 taxa were identified, while species per station ranged from 11 to 69 with a maximum abundance of 2100 individuals per m2. Biomass ranged from 2·3 g m−2 to 103·1 g m−2, with a mean value of 21·0 g m−2. Multivariate statistical analysis of the infaunal data revealed the presence of three benthic assemblages, which were closely related to habitat type. An investigation into the dominant feeding guilds or isotrophic groups from each assemblage revealed that surface deposit feeding dominated the very fine sand habitats while both surface and subsurface deposit feeding were very common in the silt communities. A combination of feeding types (namely carnivorous, suspension and surface-deposit feeding) was associated with the sand habitats. The findings of this study are discussed in relation to those in similar habitat types.

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Shallow sublittoral ecosystems in the Inner Hebrides

Cited by 4 publications

References 2 publications

The macrofauna of a stony sand area in the German Bight (North Sea)

The macrofauna of a stony sand area in the German Bight (North Sea)

Notes on the distribution and ecology of some new and interesting seaweeds from south-west Britain

Macro-infaunal biodiversity and analysis of associated feeding guilds in the Greater Minch area, Scottish west coast

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