| Popis: |
The links between hydrology, hydrochemistry and salmonid ecology were examined in an interdisciplinary study of the effects of hyporheic water quality on the survival and the development of salmonid ova. Three catchments located in the northeast of Scotland were examined. Work focussed on the Newmills Burn, a degraded agricultural catchment. Complementary studies were also undertaken on the Pow Burn, a comparative agricultural catchment, and the Girnock Burn, a contrasting semi-pristine upland catchment. The relative importance of sediment transport, groundwater-surface water (GW-SW) interactions and hydrochemistry, for the survival and development of salmonid ova, was assessed between spawning in autumn, and hatch in spring. Hydrochemical, hydrometric, isotopic and modelling techniques were applied to the problem in an evolving, serial approach to investigation. The infiltration of fine sediment to the streambed was not sufficient to explain observed fine scale spatial variability |
