Dylanwadu polisi gwarchod a rheoli afonydd
Mae ein hymdriniaeth o ddadansoddi a modelu systemau dŵr wedi arwain at ddarganfyddiad o bwys byd-eang sy’n dangos newid mewn ecosystemau afonydd yr uwchdiroedd.
Mae'r cynnwys isod ar gael yn Saesneg yn unig.
In the past river investigations were descriptive, characterised by uncertainty and unable to support evidence-based management at sufficiently realistic scales.
Researchers from the School of Biosciences, led by Professor Steve Ormerod, pioneered a distinct research paradigm in which stratified surveys, experiments and models were applied to river catchments to investigate large-scale factors affecting river organisms and ecological functions.
Professor Ormerod and his team investigated claims that acid rain was causing widespread changes in the chemistry and ecology of up land European rivers. Their research revealed that ecological problems were greatest where base-poor rivers drained plantation forest, leading to the delivery of the world's first data revealing change effects on upland river ecosystems.
Influencing policy and practice
The research undertaken by Professor Ormerod and his team of researchers has influenced the policy-making and advocacy activities of a range of government bodies and major NGOs.
Professor Ormerod's research was applied directly to the National Ecosystem Assessment (NEA) the first benefit analysis of the UK's natural environment. Specific conclusions of the NEA, based on the research included:
- Freshwater ecosystems were critical to human wellbeing, but undervalued.
- Ecosystem management has emphasised resource production (e.g. food, forests) to the detriment of less tangible services downstream (e.g. polluted water).
- Freshwater ecosystems and their catchments should be restored and managed positively to maximise ecosystem service benefits.
Detholiad o gyhoeddiadau
- Vaughan, I. P. and Ormerod, S. J. 2012. Large-scale, long-term trends in British river macroinvertebrates. Global Change Biology 18 (7), pp.2184-2194. (10.1111/j.1365-2486.2012.02662.x)
- Ormerod, S. J. and Durance, I. 2009. Restoration and recovery from acidification in upland Welsh streams over 25 years. Journal of Applied Ecology 46 (1), pp.164-174. (10.1111/j.1365-2664.2008.01587.x)
- Ormerod, S. J. 2009. Climate change, river conservation and the adaptation challenge. Aquatic Conservation-Marine and Freshwater Ecosystems 19 (6), pp.609-613. (10.1002/aqc.1062)
- Durance, I. and Ormerod, S. J. 2007. Climate-change effects on upland stream macroinvertebrates over a 25-year period. Global Change Biology 13 (5), pp.942-957. (10.1111/j.1365-2486.2007.01340.x)
- Ormerod, S. J. et al. 1993. The influence of riparian management on the habitat structure and macroinvertebrate communities of upland streams draining plantation forests. Journal of Applied Ecology 30 (1), pp.13-24.
This research was made possible through our close partnership with and support from: