Size-selective fishing drives species composition in the Celtic Sea

Fishing alters community size structure by selectively removing larger individual fish and by changing the relative abundance of different-sized species. To assess the relative importance of individual-and species-level effects, two indices of fish community structure were compared, the relative abundance of large fish individuals (large fish indicator, LFI) and the relative abundance of large fish species (large species indicator, LSI). The two indices were strongly correlated for empirical data from the Celtic Sea and for data from simulated model communities, suggesting that much of the variability in the LFI is caused by shifts in the relative abundance of species (LSI). This correlation is explained by the observation that most of the biomass of a given species is spread over few length classes, a range spanning the factor 2 of individual length, such that most species contributed predominantly to either the small or the large component of the LFI. The results suggest that the effects of size-selective fishing in the Celtic Sea are mediated mainly through changes in community composition.

Celtic nationalism and supranationalism: comparing Scottish and Northern Ireland party responses to Europe

This article explores how stateless nationalist parties in the ‘Celtic periphery’ of Scotland and Northern Ireland have used Europe to advance their territorial projects. Despite vastly different historical, political and social contexts, the Scottish National Party and Northern Ireland's Social Democratic and Labour Party have both advanced a pro-European, social democratic discourse that emphasises the importance of Europe as a framework for constitutional reform and shared sovereignty. However, in recent years the parties have diverged on Europe. While the SDLP has continued its principled commitment to further integration, the SNP has articulated an increased criticism of the supranational project. This divergence in party attitudes reveals the extent to which the pro-European dimension of Celtic nationalism is ideological or opportunistic.

Levels and patterns of material deprivation in Ireland: After the 'Celtic tiger'

In this article we use the first full wave of the Irish component of the EU Statistics on Income and Living Conditions survey to evaluate conflicting interpretations of levels and patterns of material deprivation in Ireland after the 'Celtic Tiger'. Radical critics of Irish economic policies have seen the Irish case as a particularly good illustration of the tendency for globalization to be accompanied by widespread economic vulnerability and marginalization. Here, employing a multidimensional perspective we identify one fifth of the population as being economically vulnerable and one in 14 as vulnerable to maximal deprivation, in that they exhibit high risks of deprivation across a range of life-style deprivation dimensions. Current levels and depth of material deprivation are a good deal more modest than suggested by radical critics of the Irish experience of economic globalization.

Modelling recovery of Celtic Sea demersal fish community size-structure

The Large Fish Indicator (LFI) is a size-based indicator of fish community state. The indicator describes the proportion by biomass of a fish community represented by fish larger than some size threshold. From an observed peak value of 0.49 in 1990, the Celtic Sea LFI declined until about 2000 and then fluctuated around 0.10 throughout the 2000s. This decline in the LFI reflected a period of diminishing ‘large’ fish biomass, probably related to high levels of size selective fishing. During the study period, fishing mortality was maintained at consistently high values. Average biomass of ‘small’ fish fluctuated across the whole time series, showing a weak positive trend in recent years. Inter-annual variation in the LFI was increasingly driven by fluctuation in small fish biomass as large fish biomass declined. Simulations using a size-based ecosystem model suggested that recovery in Celtic Sea fish community size-structure (LFI) could demand at least 20% reductions in fishing pressure and occur on decadal timescales.

Landscape and Cosmology in the Dindshenchas

This contribution presents an analysis of the relationship between transgression, naming and the formation of the landscape in the medieval Gaelic collection of place-name lore known as the Dindshenchas. It includes analyses of the origin legends of the rivers Boyne and Shannon, as well as those of Lough Neagh and Lough Ree.

From Angela's Ashes to the Celtic Tiger: Early Life Conditions and Adult Health in Ireland

We use data from the Irish census and exploit regional and temporal variation in infant mortality rates over the 20th century to examine effects of early life conditions on later life health. The urban mortality penalty collapsed in Ireland in the years right after World War II. Our main identification is public health interventions centered on improved sanitation and food safety, which we believed played a leading role in eliminating the Irish urban infant mortality penalty. Our estimates suggest that a unit decrease in mortality rates at time of birth reduces the probability of being disabled as an adult by about 12–18%

Path-Dependency, Stocks, Switching Points, Flows: Reflections on Long-term Global Change and Local Opportunities

This paper examines the possibilities for peripheral localities to achieve upward mobility in the world-system by “hooking on” to larger processes of world-system accumulation. In particular, is it possible for economies that are dependent on foreign investment to receive a flow of investments that is high enough to overcome the negative impacts of a high stock of foreign investment, thus enabling them to cross a threshold and achieve upward mobility in the world-system? An analysis of therecent experience of the southern Irish “Celtic Tiger” economy during 1990-2000 indicates that such an upward movement is possible on the basis of massive foreign investment inflows. On closer examination, however, the Irish-type model appears to be highly deficient, because a high proportion of growth is illusionary and also on grounds of social desirability and lack of generalizability.

Three medieval buildings in the port of Ardglass, Co Down

Three buildings in what is now a small port in Ardglass, Co. Down are connected by their location on the ridge overlooking the harbour and quay. Because of the Irish vernacular style related to tower houses they have all been called castles, but analysis shows that they were originally more commercial in their purpose. The largest of the buildings is identified as a line of shops. The building adjacent to that was possibly used as a warehouse or communal hall, while the third building appears to have been used as a watch tower for the port. As such they relate to other commercial buildings found in late medieval Irish towns, notably Kilmallock, Co. Limerick.