Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Katrina Lansdown"'
Publikováno v:
Advances in Water Resources. 73:185-197
Small streambed structures (or microforms, 0.01–1 m in length) exist ubiquitously in riverbed systems. Small-scale topography is potentially important in controlling hyporheic exchange flow and transport of conservative and reactive solutes at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30fc46001c4fca3e373ddbf71f17def5
https://doi.org/10.1016/j.advwatres.2014.07.013
https://doi.org/10.1016/j.advwatres.2014.07.013
Autor:
Katrina Lansdown, Andrew Binley, Catherine M. Heppell, Patrick Byrne, Hao Zhang, Sami Ullah, Ann Louise Heathwaite, Mark Trimmer
Publikováno v:
Hydrological Processes. 29:1385-1396
The hyporheic zone of riverbed sediments has the potential to attenuate nitrate from upwelling, polluted groundwater. However, the coarse-scale (5 – 10 cm) measurement of nitrogen biogeochemistry in the hyporheic zone can often mask fine-scale (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e8731a2bab56679575701c71dc10879
https://doi.org/10.1002/hyp.10269
https://doi.org/10.1002/hyp.10269
Autor:
Sami Ullah, Katrina Lansdown, A. Louise Heathwaite, Hao Zhang, Mark Trimmer, Catherine M. Heppell, Andrew Binley
Publikováno v:
Biogeochemistry. 118:121-134
Emergent vegetation in river beds can play a significant role in nutrient cycling in riverine sediments. We analysed and compared pore water NO3 − concentration gradients in the sediments of the River Leith, Cumbria, UK, in the presence and absence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12724744290bb0422d7a974689b1176f
https://doi.org/10.1007/s10533-013-9909-2
https://doi.org/10.1007/s10533-013-9909-2
Autor:
Ann Louise Heathwaite, Andrew Binley, Patrick Keenan, Hao Zhang, Katrina Lansdown, Mark Trimmer, Sami Ullah, Patrick Byrne, Catherine M. Heppell
Publikováno v:
Hydrological Processes. 28:4766-4779
We examined the influence of river stage on subsurface hydrology and pore water chemistry within the hyporheic zone of a groundwater-fed river during the summer baseflow period of 2011. We found river stage and geomorphologic environment to control c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24d8360bc515413aea9f23d569a61220
https://doi.org/10.1002/hyp.9981
https://doi.org/10.1002/hyp.9981
Autor:
Patrick Keenan, Sami Ullah, Katrina Lansdown, Catherine M. Heppell, Hao Zhang, Andrew Binley, A. Louise Heathwaite, Mark Trimmer, Patrick Byrne
Publikováno v:
Biogeochemistry. 117:491-509
Water pathways through permeable riverbeds are multi-dimensional, including lateral hyporheic exchange flows as well as vertical (upwelling and downwelling) fluxes. The influence of different pathways of water on solute patterns and the supply of nit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::701804ecac93ede0eb027f41618ea16e
https://doi.org/10.1007/s10533-013-9895-4
https://doi.org/10.1007/s10533-013-9895-4
Autor:
Katrina Lansdown, Kate Heppell, A. Louise Heathwaite, Andrew Binley, Mark Trimmer, Sami Ullah, Hao Zhang
Publikováno v:
Ecological Engineering. 49:18-26
Here we evaluate a new field methodology for the deployment of Diffusive Equilibrium in Thin Films (DET, protected in stainless steel holders) in coarse riverbed sediments based on that originally developed for fine-grained sediments and soils. Conce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ab843f3f6fe43bcec8d76cef81c8c0f
https://doi.org/10.1016/j.ecoleng.2012.08.003
https://doi.org/10.1016/j.ecoleng.2012.08.003
Autor:
Hao Zhang, Sami Ullah, Ann Louise Heathwaite, Andrew Binley, Catherine M. Heppell, Katrina Lansdown, Fotis Sgouridis, Mark Trimmer
Publikováno v:
Limnology and Oceanography. 57:387-400
Laboratory incubations with river-bed sediment collected from riffles and pools were used to quantify potential pathways of dissimilatory nitrate reduction in the hyporheic zone of a groundwater-fed river. Sediments collected from between 5-cm and 86
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a83b4d13e86b62d5f79abe00f96200f3
https://doi.org/10.4319/lo.2012.57.2.0387
https://doi.org/10.4319/lo.2012.57.2.0387
Publikováno v:
Water Research. 45:4909-4922
The relative magnitudes of, and factors controlling, denitrification and dissimilatory nitrate reduction to ammonium (DNRA) were measured in the soil of a re-connected temperate floodplain divided into four different land management zones (grazing gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de655f6429168d0b80337cadb07ef45d
https://doi.org/10.1016/j.watres.2011.06.037
https://doi.org/10.1016/j.watres.2011.06.037
Autor:
Paul Whitehead, Mark Trimmer, Katrina Lansdown, Li Jin, Catherine M. Heppell, Duncan A. Purdie
Publikováno v:
The Science of the total environment. 572
Managing diffuse pollution in catchments is a major issue for environmental managers planning to meet water quality standards and comply with the EU Water Framework Directive. A major source of diffuse pollution is from nitrogen, with high nitrate co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6628cf2c8d7080050b0594657e4126a9
https://pubmed.ncbi.nlm.nih.gov/26953139
https://pubmed.ncbi.nlm.nih.gov/26953139
Autor:
Catherine M. Heppell, Katrina Lansdown, Christoph Müller, Pascal Boeckx, Dries Huygens, Tobias Rütting, Mark Trimmer
Publikováno v:
Methods in Biogeochemistry of Wetlands
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1dd000b41686e13df8e26299fc639345
https://doi.org/10.2136/sssabookser10.c30
https://doi.org/10.2136/sssabookser10.c30
