Potential for longevity of novel genetically modified herbicide-tolerant traits in the Irish landscape

With the renewed interest in GM crop technology in Ireland, some concern has been raised in relation to the potential impact on biodiversity in the Irish agri-environment. This concern can focus on the potential for a transgenic trait to cross to wild relatives. A novel trait will be judged to have persisted in a wild population via the successful production of seeds, such that these seeds are viable and result in the establishment of a self-sustaining population. In the case of a herbicide tolerant (HT) trait, feral and volunteer populations can only remain viable if managed with applications of the herbicide that the trait is designed to resist. This surviving population of HT plants would then need to compete successfully with other wild plants in order to prevail in the landscape and persist over time. There are few agricultural crops that can manage this combination, but as oilseed rape plants are often noted along roadsides and hedgerows in Ireland, it is correct to assume that this crop has the ability to be a successful feral survivor. This paper presents the results of a thought experiment, derived exclusively using the academic literature, on the issue of longevity. This is done by taking four hypothetical case scenarios and examining the potential for a combination of events to take place for oilseed rape (Brassica napus), selected here because it has a high potential for 'escaping' via pollen- and/or seed-mediated gene flow. A lack of quantitative data on Irish farmland biodiversity hinders solid conclusions, but when management pressure is eased biodiversity stress is lessened.EPA STRIVETeagascAuthor has checked copyrightRB 17/04/1

Mapping out the Great Irish Famine in fiction, 1847–1870: imperial counternarratives

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Palaeoecology of human impact during the historic period: palynology and geochemistry of a peat deposit at Abbeyknockmoy, Co. Galway, Ireland

Understanding the present condition of the cultural landscape requires a palaeoecological perspective with a particular emphasis on the growing intensity of human impact over the last few centuries. Detailed palynological investigations of the uppermost metre of peat at Abbeyknockmoy Bog were supplemented by silicon and titanium analyses to give additional proxy records for the intensity of human impact on the local landscape. The AMS radiocarbon chronology for this profile is constrained by the presence of the Hekla-1 tephra isochron of AD 1104. The palaeoenvironmental evidence correlates closely to the local historical and archaeological records. The results indicate a late Iron Age lull in human impact in the early centuries AD, which is followed by increasing agricultural activity during the early Christian period. The establishment of the Cistercian monastery of Abbeyknockmoy in the twelfth century AD had a significant impact upon the landscape. A peak in deforestation and farming activity is registered in the seventeenth and eighteenth centuries AD. The silicon and titanium records correlate strongly with the pollen indicators for increased human disturbance