Scientific Papers
http://hdl.handle.net/10793/138
2024-03-22T07:38:21ZGlobal warming will change the thermal structure of Lough Feeagh, a sentinel lake in the Irish landscape, by the end of the twenty-first century
http://hdl.handle.net/10793/1884
Global warming will change the thermal structure of Lough Feeagh, a sentinel lake in the Irish landscape, by the end of the twenty-first century
Ayala, Ana; de Eyto, Elvira; Jennings, Eleanor; Goyette, Stéphane; Pierson, Don C.
Recent developments in impact modelling of global warming on lakes have resulted in a greater understanding of how these vital ecosystems are likely to respond. However, there has been little quantitative analysis of this in an Irish context, despite the importance of lakes in the island's landscape. Here, we explore the impact of global warming on the hydrodynamics and thermal structure of a sentinel Irish lake under future climate scenarios. A 1D lake model, Simstrat, was calibrated and validated using water temperature data collected from Lough Feeagh, a site of long-term ecological research in the west of Ireland. Once validated, the model was then driven by daily climate model projections to generate informative thermal metrics for the time period of 2006–2099. Despite the moderating influence of the Atlantic, projections indicate that global warming will have a marked effect on the thermal structure of Feeagh, with surface water temperatures set to warm by 0.75°C under a more stringent mitigation pathway (RCP 2.6) and 2.42°C under a non-mitigation pathway (RCP 8.5). While warming was projected to be greatest in summer in the epilimnion, winter warming was greater than in other seasons in the hypolimnion. Stratification is projected to become more stable and earlier, and the growing season to be longer by 11 to 47 days, depending on mitigation pathways. Future studies could use a similar modelling workflow to investigate the possible implications of global warming on other Irish lakes, particularly those of specific societal importance or those of conservation interest.
Peer reviewed
2023-01-01T00:00:00ZMarine Institute 2nd annual research symposium, 2020; Symposium abstracts.
http://hdl.handle.net/10793/1739
Marine Institute 2nd annual research symposium, 2020; Symposium abstracts.
Marine Institute
2021-01-01T00:00:00ZScience Communication: Stakeholder perceptions of Real-time Incentive Fisheries Management
http://hdl.handle.net/10793/1667
Science Communication: Stakeholder perceptions of Real-time Incentive Fisheries Management
Pedreschi, D.; Vigier, A.; Höffle, H.; Kraak, S.B.M.; Reid, D.G.
In these changing times, with political and environmental uncertainty surrounding us, fisheries management needs to become more adaptive in order to respond to the changes in our natural environment and changing management frameworks. Based on close to real-time information updates, and harnessing modern technology, Real-Time Incentive (RTI) fisheries management is designed to evolve with the fish stocks, enabling managers to respond more quickly and efficiently to management issues as they arise. Through the use of a credit system that makes use of regularly updated fine-scale information, incentives can be incorporated as rewards to encourage desirable actions such as data collection or ‘fishing-for-litter’ activities. However, in order for a new system such as this to be useful and become accepted, stakeholders must be involved in the development and design process.
This paper details the consultative process carried out with Irish demersal fishery stakeholders in an effort to identify their likes and dislikes of the system, and work towards tailoring the RTI system into a practical solution that works for them. In this process, we achieved a detailed understanding of the fishery, the complexity of the system, and the challenges faced by the stakeholders, all of which must be considered when attempting to implement a new management system such as RTI. A range of proposals were made by stakeholders, including new ideas for the future development of the RTI system. Most striking were the numerous ideas and approaches to tackling key issues currently facing the industry, many of which also have relevance to existing fisheries management. Given the freedom and support to do so, fishing industry stakeholders are eager to contribute to solving many of their own problems.
Peer-reviewed
2021-01-01T00:00:00ZHerring larval surveys in the Celtic Sea and division VIIj in 1983/1984
http://hdl.handle.net/10793/1490
Herring larval surveys in the Celtic Sea and division VIIj in 1983/1984
Cullen, A.; Barnwall, E.; Grainger, R. J.
Surveys for herring larvae in the Celtic Sea were conducted for the sixth ~ successive season between October 1983 and February 1984. The modifications made to the survey grid in the previous season to take account of the amalgamation of the Celtic Sea and Division VIIj for assessment purposes and to ascertain if larvae drift into the Irish Sea were also adopted for the 1983/84 surveys. A drift of larvae towards the Irish Sea was apparent in 1983/84. The larval abundance index for 1983/84 based on a standard survey area was almost three times higher than any previous value. A continuous increase in larval indices since 1978/79 indicates a recovery of the spawning stock.
Peer-reviewed. This article can be found on the ICES website here: http://www.ices.dk/publications/our-publications/Pages/CM-documents.aspx
1984-01-01T00:00:00Z