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

Author(s):  
A.R. Child

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).

2003 ◽  
Vol 83 ◽  
pp. 9-45 ◽  
Author(s):  
Timothy Darvill ◽  
Geoffrey Wainwright ◽  
Vanessa Constant ◽  
Yvette Staelens ◽  
Anna Stocks ◽  
...  

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.


2006 ◽  
Vol 86 (6) ◽  
pp. 1389-1399 ◽  
Author(s):  
Niamh M. Kilgallen ◽  
Alan A. Myers ◽  
David McGrath

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.


Subject Tidal power in the United Kingdom. Significance An independent review commissioned by the government and published on January 12 recommended a power price subsidy be paid to a 320-megawatt (MW) pilot tidal electricity-generating plant at Swansea Bay in Wales. The project could be a pathfinder for a further nine sites on the UK west coast -- in the Severn estuary, Liverpool Bay and the Irish sea -- with total installed capacity of 25,000 MW that would satisfy up to 12% of the country's electricity demand for more than a century, while cutting carbon dioxide emissions. Impacts Seawalls would cost at least 35 billion pounds (44 billion dollars) and turbines, generators and housings another 50 billion pounds. An average of 40,000 jobs a year would be created during a 15-year construction period, with some 7,000 permanent staff required thereafter. The cost of fossil fuel imports could be reduced by 500 million pounds annually once all the plants are operational.


Tectonics ◽  
2009 ◽  
Vol 28 (4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Simon P. Holford ◽  
Jonathan P. Turner ◽  
Paul F. Green ◽  
Richard R. Hillis

2019 ◽  
Vol 11 (2) ◽  
pp. 280-301
Author(s):  
John Brannigan ◽  
Frances Ryfield ◽  
Tasman Crowe ◽  
David Cabana

Abstract “Flow” is a key concept in our era of liquid modernity, across a broad range of ecological, economic, and cultural discourses. In this essay, we examine the material flows integral to naturecultures through the specific case study of Seascale on the Cumbria coast in the UK. Through an analysis of cultural representations, we show the construction of Seascale as a seaside resort in the nineteenth and early twentieth centuries, and the rapid and irrevocable sinking of its cultural value since the commissioning of the nuclear power and reprocessing plant at Sellafield in 1947. By following the “flows” of pleasure, emotion, energy, and waste through Seascale, we explore the legacies of nuclear contamination for coastal communities, within a broader regime of the commodification of nature. This essay emerges from a transdisciplinary research project to investigate the cultural influences and impacts of ecosystem change in coastal environments around the Irish Sea. A collaboration between environmental humanities and ecological sciences, the project sought a materialist intervention in the conceptualization and practice of ecosystem assessment so as to capture and map a more inclusive and multidirectional sense of the flows that are integral to ecosystems, and to move beyond the limitations of dominant models of environmental stewardship. In contrast to the ways in which flow metaphors have been employed in contemporary economic and environmental discourse, the project attempts to analyze the material flows integral to naturecultures through particular places, perspectives, and agencies.


Author(s):  
Eric Richards

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.


2011 ◽  
Vol 68 (8) ◽  
pp. 1778-1784 ◽  
Author(s):  
Deirdre Hoare ◽  
Norman Graham ◽  
Pieter-Jan Schön

Abstract Hoare, D., Graham, N., and Schön, P-J. 2011. The Irish Sea data-enhancement project: comparison of self-sampling and national data-collection programmes—results and experiences. – ICES Journal of Marine Science, 68: 1778–1784. The Irish Sea Data Enhancement Pilot (ISDEP) was initiated by the UK and Irish fishing sectors, with the objective of improving the precision of commercial catch data (landings and discards) from vessels engaged in demersal trawling in the Irish Sea (ICES Division VIIa). The programme was supported by the Irish and UK Governments and managed by national laboratories. The experience of establishing and managing such a programme, including logistical, data-quality, and participation issues, is discussed. By contrasting with parallel national programmes, it is shown that the new data are robust and have improved precision. Experience has also shown that it is preferable to involve a few vessels in providing frequent samples, but that positive incentives are needed to maintain the participation.


Parasitology ◽  
1945 ◽  
Vol 36 (3-4) ◽  
pp. 165-167 ◽  
Author(s):  
Gwendolen Rees

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.


1996 ◽  
Vol 34 (12) ◽  
pp. 119-126
Author(s):  
R. Burrows

The Isle of Man sits in the middle of the Irish Sea, surrounded by the United Kingdom (UK) coasts of England, Scotland, Wales and Northern Ireland. It is, however, independently governed by its own Parliament, Tynwald, and is not part of the European Union (formerly the European Community, EC). A radical scheme for the integrated sewerage provision of the whole of the Island, of population approximately 65,000, involving centralised treatment and re-use of sewage sludges, has been accepted in principle. The policy adopted, as realised in the so-called ‘IRIS’ scheme, goes beyond the level of provision called for by the recent EC Directive on Urban Wastewater Treatment, yet the threat posed by the Isle of Man to the waters of the Irish Sea is negligible in comparison to the major inputs from its more populous neighborus. The geographic separation of the Island from the major pollution inputs from the British and Irish mainlands should ensure unobstructed assimilation of its releases by the marine environment. In many instances the coastal communities of the island, through their small size, would be without the statutory responsibility for land based treatment provision, even if bound by the EC legislation. This article, based on evidence presented to Public Inquiry on a first phase of the scheme's implementation, expresses the view that the strategy for future sewerage provision should be re- evaluated in the light of the flexibilities in implementation which would be afforded to the Isle of Man under the EC legislation. More fundamentally, however, it is suggested that the ‘marine treatment’ option using long- sea outfalls should be incorporated in the range of scheme options to be evaluated against achievement of a ‘best environmental solution’. The argument developed herein draws extensively on the background leading to the UK Water Industry's reluctant adoption of the EC legislation. These circumstances are considered worthy of report in their own right and the Isle of Man provides an ideal case study.


2004 ◽  
Vol 141 (3) ◽  
pp. 345-351 ◽  
Author(s):  
RICHARD TILEY ◽  
NICKY WHITE ◽  
SULEIMAN AL-KINDI

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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