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| McKenna, John; Centre for Coastal and Marine Research, School of Environmental Sciences, University of Ulster; j.mckenna@ulster.ac.uk; Quinn, Rory J.; Lecturer in Marine Archaeological Geophysics, Centre for Maritime Archaeology, School of Environmental Sciences, University of Ulster; rj.quinn@ulster.ac.uk; Donnelly, Daniel J.; ;; Cooper, J. Andrew G.; Professor of Coastal Science, Centre for Coastal and Marine Research, School of Environmental Sciences, University of Ulster; jag.cooper@ulster.ac.uk. |
| A mental map of the substrate of Lough Neagh, Northern Ireland, compiled from interviews with local fishermen, is compared with maps produced by science-based techniques. The comparison reveals that the mental map is highly accurate. This finding contrasts with the spatial distortion characteristic of the classic mental map. The accuracy of the Lough Neagh map is attributed to the fact that it is a compendium of the knowledge of several generations, rather than an individual perception. Individual distortions are filtered out, and accuracy is promoted by economic self-interest. High accuracy may be characteristic of the mental maps held by artisanal exploiters of natural resources. |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Geophysical survey; LEK; Local environmental knowledge; Lough Neagh; Mental maps; Northern Ireland; Traditional fishery. |
| Ano: 2008 |
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| Bayon, Germain; Delvigne, C.; Ponzevera, Emmanuel; Borges, A. V.; Darchambeau, F.; De Deckker, P.; Lambert, T.; Monin, L.; Toucanne, Samuel; Andre, L.. |
| The δ30Si stable isotopic composition of silicon in soils and fine-grained sediments can provide insights into weathering processes on continents, with important implications on the Si budget of modern and past oceans. To further constrain the factors controlling the distribution of Si isotopes in sediments, we have analysed a large number (n=50) of separate size-fractions of sediments and suspended particulate materials collected near the mouth of rivers worldwide. This includes some of the world’s largest rivers (e.g. Amazon, Congo, Mackenzie, Mississippi, Murray-Darling, Nile, Yangtze) and rivers from the case study areas of the Congo River Basin and Northern Ireland. Silt-size fractions exhibit a mean Si isotopic composition (δ30Si = -0.21 ± 0.19‰; 2... |
| Tipo: Text |
Palavras-chave: World rivers; Congo basin; Northern Ireland; Si isotopes; Clay minerals; Weathering; Temperature; Precipitation. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00434/54609/55991.pdf |
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