Signature of cryptic sedimentary basin inversion revealed by shale compaction data in the Irish Sea, western British Isles

Topographical and geophysical surveys carried out in August 2002 at three monuments in the Preseli Hills of Pembrokeshire are reported: Bedd Arthur, Gors Fawr and Meini Gwyr. Previously unrecorded features were revealed at all three sites, most spectacularly at Meini Gwyr which, from the evidence of geophysical survey, appears to be a multi-phase monument that includes a double pit-circle, hengi-form monument and embanked enclosure with an internal stone circle. Comparisons are made with plans prepared by Flinders Petrie in 1926, published here for the first time. A viewshed analysis of the surveyed sites and others of similar kind in the area allows an appreciation of landscape setting and intervisibility. It is suggested that the stone circles are sited in relation to upland stone sources. All the monuments considered here are compared with contemporary structures recorded elsewhere in the British Isles. It is concluded that while the stone circles and oval setting fit comfortably within a distribution pattern that extends across most of the British Isles, the later phases of Meini Gwyr at least belong to a more localized tradition of monument building focused on the Irish Sea region.

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Re-establishment of Orchomenella crenata (Crustacea: Amphipoda) as a distinct species, with a first record of its occurrence in the British Isles

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315406014421 ◽

2006 ◽

Vol 86 (6) ◽

pp. 1389-1399 ◽

Cited By ~ 1

Author(s):

Niamh M. Kilgallen ◽

Alan A. Myers ◽

David McGrath

Keyword(s):

Distinct Species ◽

First Record ◽

Irish Sea ◽

British Isles ◽

Morphological Similarity ◽

The Irish Sea ◽

First Time

Orchomenella crenata is recorded for the first time from the Irish Sea. Some authors have previously questioned the validity of this taxon due to its morphological similarity with Orchomenella nana and have placed it in the synonymy of O. nana. The question of its validity is resolved by the re-description and comparison of both species.

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Biochemical polymorphism in bass, Dicentrarchus labrax, in the waters around the British Isles

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400037759 ◽

1992 ◽

Vol 72 (2) ◽

pp. 357-364 ◽

Cited By ~ 8

Author(s):

A.R. Child

Keyword(s):

Dicentrarchus Labrax ◽

Irish Sea ◽

Detailed Knowledge ◽

British Isles ◽

Stock Management ◽

Eastern Atlantic Ocean ◽

Commercial Species ◽

The Irish Sea ◽

Southern Norway ◽

The Uk

The bass Dicentrarchus labrax is found in the eastern Atlantic Ocean from Morocco (30°N) to southern Norway (60°N) and in the Mediterranean and Black Seas (Whitehead et al., 1986). Throughout its range the bass is an important commercial species and in the waters around the British Isles it is exploited both by commercial fishermen and by sport anglers.Since the early 1970s the recorded landings of bass have increased considerably (Pickett & Pawson, 1991). The increased exploitation and the conflict of interest between sport fishermen and commercial bass fishermen have been the subject of a multitude of articles in the fishing press calling for greater stock management. Detailed knowledge of the stock structure was required to provide advice on the management of the UK bass fishery (Pawson & Pickett, 1987).Prior to 1980, tagging studies were conducted off the southern coast of Ireland (Kennedy & Fitzmaurice, 1972), the south-west of England (Holden & Williams, 1974) and in the Irish Sea (Kelley, 1979).

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The Irish case

The genesis of international mass migration ◽

10.7228/manchester/9781526131485.003.0014 ◽

2018 ◽

pp. 207-224

Author(s):

Eric Richards

Keyword(s):

Population Growth ◽

International Migration ◽

Irish Sea ◽

Growing Up ◽

British Isles ◽

Irish Population ◽

Economic Expansion ◽

Great Famine ◽

Irish Case ◽

The Irish Sea

This chapter deals with Ireland’s place in the more generic context of the origins of migration from the British Isles. The first crescendo of mass international migration came in the mid-1840s and was disproportionately Irish. Population growth, famine and emigration in the Irish case are commonly regarded as tied together inextricably. The spread of the potato facilitated economic expansion which included ‘a huge movement of population from east to west with new communities growing up in previously little populated areas’. The potato failure in 1846 produced catastrophic levels of mortality and then massive migration. The evacuation of rural Ireland eventually issued forth into a flood of emigrants across the Irish Sea and across the Atlantic. Whatever the ideological assumptions, the readjustment of agriculture in Ireland, especially in the decades of the Great Famine, was radical and ruthless.

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A record of parasitic worms from fishes in rock pools at Aberystwyth

Parasitology ◽

10.1017/s0031182000012130 ◽

1945 ◽

Vol 36 (3-4) ◽

pp. 165-167 ◽

Cited By ~ 9

Author(s):

Gwendolen Rees

Keyword(s):

Marine Fishes ◽

The Other ◽

Irish Sea ◽

Rock Pools ◽

British Isles ◽

The Irish Sea ◽

Parasitic Worms

Various records have, from time to time, been made of parasitic worms from marine fishes around the British Isles. Nicoll (1915) has compiled a very valuable list of the Trematoda, which class has received more attention than have the other parasitic worms of fishes. They have been recorded from Scottish waters by T. Scott (1901), from the Irish Sea by A. Scott (1904), from the Northumberland coast by Lebour (1908) and from Ireland by Bellingham in 1844 and Southern in 1912. The Cestoda have received less attention. Woodland (1927) has recorded some species from Plymouth, and a record of the trematode and cestode parasites of fishes from the Porcupine Bank, Irish Atlantic Slope, and Irish Sea has been made by Rees & Llewellyn (1941). The records of Nematoda and Acanthocephala are very scanty. Baylis & Jones (1933) include them together with trematodes and cestodes in a list of parasitic worms obtained from marine fishes at Plymouth.

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Linking Paleogene denudation and magmatic underplating beneath the British Isles

Geological Magazine ◽

10.1017/s0016756804009197 ◽

2004 ◽

Vol 141 (3) ◽

pp. 345-351 ◽

Cited By ~ 17

Author(s):

RICHARD TILEY ◽

NICKY WHITE ◽

SULEIMAN AL-KINDI

Keyword(s):

Flexural Rigidity ◽

Simple Algorithm ◽

Irish Sea ◽

British Isles ◽

Dynamic Topography ◽

Time Data ◽

Magmatic Underplating ◽

Moho Depths ◽

The Irish Sea ◽

Iceland Plume

A simple flexural model is used to explore the relationship between magmatic underplating and denudation. First, we show how denudation can be calculated as a function of underplating. The distribution and density of underplate are obviously important parameters in determining the wavelength and amplitude of denudation. However, the denudational pattern can be considerably modulated by the flexural rigidity of the lithosphere. Several other parameters also play a significant role. For example, we show how variations in pre-existing bathymetry and in present-day topography affect denudational calculations. We have applied our simple algorithm to the problem of Paleogene underplating beneath the British Isles. Forward and inverse modelling of travel-time data from a wide-angle seismic experiment which traversed the British Isles suggests that a large pod of high velocity material occurs at Moho depths beneath the Irish Sea. The shape and inferred density of this pod are used to calculate the amplitude and wavelength of denudation for different flexural rigidities. We compare our predictions with the observed pattern of Paleogene denudation and conclude that the bulk of the observed denudation can be accounted for by magmatic underplating associated in a general way with the Iceland Plume. Notwithstanding this agreement, there is compelling evidence for additional mild uplift events especially during the Neogene. These mild events may reflect fluctuating dynamic topography associated with the Iceland Plume.

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Coscinodiscus nobilis (Grunow) in continuous plankton records, 1977–78

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400040364 ◽

1980 ◽

Vol 60 (3) ◽

pp. 675-680 ◽

Cited By ~ 8

Author(s):

G. A. Robinson ◽

T. D. Budd ◽

A. W. G. John ◽

P. C. Reid

Keyword(s):

Irish Sea ◽

English Channel ◽

British Isles ◽

The West ◽

The Irish Sea

Results from the Continuous Plankton Recorder (CPR) Survey have been used to extend the observation by Boalch & Harbour (1977 a) of the occurrence in January 1977 of a diatom Coscinodiscus nobilis (Grunow), new to British waters. Samples have been taken by the CPR to the west of the British Isles since 1948 and along the English Channel since 1957. C. nobilis was not identified until the spring of 1977, thus confirming the observations by Boalch & Harbour. It reappeared in 1978 when it was found further north in the Irish Sea.

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The distribution of Polychaeta in offshore deposits in the Irish Sea

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315400017069 ◽

1957 ◽

Vol 36 (1) ◽

pp. 49-75 ◽

Cited By ~ 11

Author(s):

Eve C. Southward

Keyword(s):

Feeding Habits ◽

Bottom Deposit ◽

Irish Sea ◽

British Isles ◽

Animal Group ◽

Isle Of Man ◽

Bottom Deposits ◽

Mode Of Life ◽

The Irish Sea ◽

Coarse Gravel

During 1952–54 a survey was made of the Polychaeta living in the offshore bottom deposits of the south of the Isle of Man. These deposits range from stones and coarse gravel to soft mud; samples were obtained with a van Veen grab sampler and various dredges.It was found that, although some species were widely distributed, each bottom deposit had a typical fauna, and that where the deposits graded into one another the polychaete fauna was also mixed. The distribution of each species appears to depend mainly on its mode of life and feeding habits; some can exist in several types of deposit or habitat, while others are very much restricted in their distribution.The Polychaeta formed a high proportion, numerically, of the macrofauna, exceeding any other animal group, except possibly in the coarse gravels. However, the density of the polychaete population was low compared with other areas of the British Isles, and this may be correlated with the comparatively low biomass in the area.

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