Observations on the Epifauna of the Deep-Water Muds of the Clyde Sea Area, with Special Reference to Chlamys septemradiata (Muller)

10.2307/1816 ◽  
1953 ◽  
Vol 22 (2) ◽  
pp. 240 ◽  
Author(s):  
J. A. Allen
Keyword(s):  
Special Reference ◽  
Deep Water ◽  
Clyde Sea ◽  
Sea Area

XIX.—The Structure and Behaviour of Hiatella gallicana (Lamarck) and H. arctica (L.), with special reference to the Boring Habit

1949 ◽  
Vol 63 (3) ◽  
pp. 271-289 ◽  
Author(s):  
W. Russell Hunter
Keyword(s):  
Special Reference ◽  
Technical Problems ◽  
The University ◽  
Clyde Sea ◽  
Sea Area

Of the genera of rock-boring lamellibranchs which occur in British waters, Hiatella (= Saxicava) is the commonest. But the method of boring remains obscure, and for this reason the present research was suggested by Professor C. M. Yonge, under whose direction it was conducted. Observations were made during 1945 and 1946 in the Clyde Sea Area and at the Millport Laboratory, while other work on living and preserved material from both the Clyde and Plymouth areas was carried out at the Department of Zoology, University of Glasgow. Acknowledgments are due for assistance in technical problems to Dr H. F. Steedman of the University of Glasgow, for help with the nomenclature of the genus to Mr R. Winckworth, and for much kindness and help to the late Mr R. Elmhirst, Director of the Millport Laboratory.

On the Biology of Calanus finmarchicus. III. Vertical Distribution and Diurnal Migration in the Clyde Sea-Area

1933 ◽  
Vol 19 (1) ◽  
pp. 139-164 ◽  
Author(s):  
A. G. Nicholls
Keyword(s):  
Vertical Distribution ◽  
Deep Water ◽  
Stage Iv ◽  
Calanus Finmarchicus ◽  
General Distribution ◽  
Diurnal Changes ◽  
Bright Sunlight ◽  
Clyde Sea ◽  
Sea Area ◽  
Diurnal Migration

1. Previous work on vertical distribution and diurnal migration is described.2. The diurnal migration of Calanus was studied on two occasions in Loch Fyne (January and July, 1932).3. Vertical hauls were taken every three hours with a closing net dividing the total depth into six sections.4. The results for each copepodite stage of Calanus are discussed, and January and July conditions are compared where possible.5. Ova and nauplii were observed to be most abundant in the top 30 metres.6. Copepodite Stages I, II, and III were most abundant above 30 metres and only the third copepodites showed any tendency to descend as the light increased.7. Stage IV showed a migration towards the surface at night, but were generally distributed during the next day.8. It is suggested that the results for this stage are probably confused owing to its transitional nature between the young stages living at the surface and Stage V Calanus living in deep water.9. Stage V was found always in deep water, slight diurnal changes being ascribed to the presence of such Calanus as were about to moult into adults.10. Females showed definite diurnal migration in both January and July.11. Males showed a general distribution and migrated in small numbers towards the surface at night and away from it during daylight.12. Stage V copepodites and females both lived nearer the surface in January than in July, correlated with seasonal changes in the intensity of the sunlight.13. The presence of swarms of Calanus at the surface under conditions of bright sunlight is discussed.

James Thomas Marshall's correspondence (1887–1895) with Scotland's Alexander Somerville: practical, personal and controversial matters in conchology

2009 ◽  
Vol 36 (1) ◽  
pp. 4-25 ◽  
Author(s):  
P. G. MOORE
Keyword(s):  
Nineteenth Century ◽  
Taxonomic Revision ◽  
Marine Science ◽  
The One ◽  
Clyde Sea ◽  
Sea Area ◽  
Molluscan Species

Attention is drawn to the one side remaining of a nineteenth-century correspondence addressed to Alexander Somerville that is housed in the archives of the Scottish Association for Marine Science at Oban, concerning conchological matters. Previously unstudied letters from James Thomas Marshall shed new light on the practicalities of offshore dredging by nineteenth-century naturalists in the Clyde Sea Area; on personalities within conchology; on the controversies that raged among the conchological community about the production of an agreed list of British molluscan species and on the tensions between conchology and malacology. In particular, the criticism of Canon A. E. Norman's ideas regarding taxonomic revision of J. G. Jeffreys's British conchology, as expressed by Marshall, are highlighted.

scholarly journals XXIII.—The Clyde Sea Area

1892 ◽  
Vol 36 (3) ◽  
pp. 641-729 ◽  
Author(s):  
Hugh Robert Mill
Keyword(s):  
The West ◽  
Experimental Physics ◽  
University Of Edinburgh ◽  
Marine Station ◽  
The Government ◽  
Government Grant ◽  
One Year ◽  
The University ◽  
Clyde Sea ◽  
Sea Area

The fjord-like inlets or sea-lochs which form so conspicuous a feature in the scenery of the west of Scotland stand in marked contrast to the shallow, low-shored firths of the east coast. When Dr John Murray decided to extend the physical and biological work of the Scottish Marine Station to the west coast he foresaw that many interesting conclusions were likely to be derived from the study of these isolated sea-basins. Various papers, published by him and other workers, contain preliminary discussions of many of the phenomena observed, fully justifying the anticipations which had been formed.For one year my work, as described in this paper, was carried out under the provisions of an Elective Fellowship in Experimental Physics of the University of Edinburgh, to which I had been elected in 1886; and subsequently by a personal grant from the Government Grant Committee for Scientific Research. The Committee also devoted several sums of money in payment of expenses in compiling this discussion. The Scottish Marine Station throughout gave the use of the steam-yacht “Medusa,” and the necessary apparatus.

scholarly journals An experimental study of the ecological impacts of hydraulic bivalve dredging on maerl

2003 ◽  
Vol 60 (2) ◽  
pp. 381-392 ◽  
Author(s):  
C Hauton ◽  
J.M Hall-Spencer ◽  
P.G Moore
Keyword(s):  
Ecological Impact ◽  
Ecological Impacts ◽  
Short Term ◽  
The West ◽  
Term Experiment ◽  
Sediment Tracer ◽  
Razor Clams ◽  
Short Term Experiment ◽  
Clyde Sea ◽  
Sea Area

AbstractA short-term experiment to assess the ecological impact of a hydraulic blade dredge on a maerl community was carried out during November 2001 in the Clyde Sea area on the west coast of Scotland. A fluorescent sediment tracer was used to label dead maerl, which was then spread out on the surface of sediment to act as a proxy for living maerl. The fauna collected by the dredge was dominated by the bivalves Dosinia exoleta and Tapes rhomboides, which were found to be intact. The target razor clams Ensis spp. were caught in low numbers, which reflected the low abundance of this genus within the maerl habitat. The hydraulic dredge removed, dispersed and buried the fluorescent maerl at a rate of 5.2 kg m−2 and suspended a large cloud of sediment into the water column, which settled out and blanketed the seabed to a distance of at least 8 m either side of the dredge track. The likely ecological consequences of hydraulic dredging on maerl grounds are discussed, and a case is made for protecting all maerl grounds from hydraulic dredging and establishing them as reservoirs to allow for the recruitment of commercial bivalve populations at adjacent fished sites.

scholarly journals A comparative study of the British species of Nucula and Nuculana

1954 ◽  
Vol 33 (2) ◽  
pp. 457-472 ◽  
Author(s):  
J. A. Allen
Keyword(s):  
Comparative Study ◽  
Species Level ◽  
Present Survey ◽  
Faecal Pellets ◽  
The Family ◽  
Marine Station ◽  
Clyde Sea ◽  
Sea Area

The survey of the sublittoral fauna of the Clyde Sea Area from 1949 onwards has shown that five species of the Protobranchiata are abundant throughout this region on a variety of substrata. Pelseneer (1891, 1899, 1911), Heath (1937), and Yonge (1939) have contributed much to the knowledge of the group as a whole, but little comparative work has been done at species level. Verrill & Bush (1897, 1898) studied the shell characters of the American Atlantic species. Moore (1931 a, b) worked on the faecal pellets of the British Nuculidae and attempted to distinguish the species by this means, while Winckworth (1930,1931), mainly in the light of the latter work, attempted to clarify the nomenclature of these species. Winckworth (1932) lists six British species of the family Nuculidae: Nucula sulcata Bronn, N. nucleus (Linné), N. hanleyi Winckworth, N. turgida Leckenby & Marshall, N. moorei Winckworth and N. tenuis (Montagu); and four species of the family Nuculanidae: Nuculana minuta (Müller), Yoldiella lucida (Loven), Y. tomlini Winckworth and Phaseolus pusillus (Jeffreys). All species of Nucula, except N. hanleyi, were taken from the Clyde Sea Area, although the latter species is included in the Clyde fauna list (Scott Elliot, Laurie & Murdoch, 1901). Only Nuculana minuta of the Nuculanidae has been taken on the present survey. Yoldiella tomlini is included in the 1901 list but is noted as being ‘insufficiently attested’. Nucula hanleyi was obtained from the Marine Station, Port Erin, but Yoldiella and Phaseolus were unobtainable.

The benthos of the deeper sediments of the Firth of Clyde, with particular reference to organic enrichment

1986 ◽  
Vol 90 ◽  
pp. 329-350
Author(s):  
T. H. Pearson ◽  
A. D. Ansell ◽  
L. Robb
Keyword(s):  
Sewage Sludge ◽  
Urban Areas ◽  
Dominant Species ◽  
Organic Enrichment ◽  
General Survey ◽  
Sludge Disposal ◽  
Benthic Infauna ◽  
Clyde Sea ◽  
Sea Area

SynopisA general survey of the biomass of the benthic infauna of the Clyde Sea Area and the distribution and abundance of the dominant species throughout the area, based on data from surveys undertaken in 1972 and 1974, is described. Recent surveys of the distribution of species along a well-defined gradient of organic enrichment on the Garroch Head sewage sludge disposal grounds in the central Firth of Clyde are used comparatively to suggest that benthic populations in the inner sea lochs, Kilbrannan Sound and in areas along the Ayrshire coast are markedly enriched. It is suggested that this enrichment may be caused by a general eutrophication of the Clyde Sea Area enhancing the effects of localised carbon inputs from urban areas.

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