Alan R Hill
Professor Emeritus
Email: hill@yorku.ca
My research examines the interactions between biogeochemistry and hydrology that regulate stream chemistry in temperate landscapes. I focus on analyzing the role of the near-stream (riparian) zone and the hyporheic zone (the zone of stream water and subsurface water mixing in stream beds) in regulating the biogeochemistry of nitrogen and other mineral elements in agricultural and forested watersheds.
Degrees
Ph.D. (Geography), Queen's University, BelfastB.A. (Geography), Queen's University, Belfast
Research Interests
Found, W.C.; A.R. Hill and E.S. Spence, 1975. Economic and Environmental Impacts of Land Drainage in Ontario Geographical Monographs No. 6, Atkinson College, Department of Geography, York University, 175pp.
Hill, A.R., 2000. Stream chemistry and riparian zones, in Jones, J. and P. Mulholland (eds), Streams and Groundwaters. Academic Press, New York, p. 84-110.
Hill, A.R., 2000. Beta diversity, p. 48; Carrying capacity, p. 67; Density dependence, p. 118; Ecotype, p. 149; Edaphic, p. 149; r and K selection, p. 371B372; Stability, p. 403B405; Tolerance, p. 438. In Goudie, A. (ed) The Encyclopedic Dictionary of Physical Geography, 3rd edn. Blackwell Ltd., Oxford.
Hill, A.R., 1997. The potential role of in-stream and hyporheic environments as buffer zones, in Haycock, N.E., T.P. Burt, K.W.T. Goulding and G. Pinay (eds), Buffer Zones: Their Processes and Potential in Water Protection. U.K. p. 115-127.
Hill, A.R. and K.J. Devito, 1996. Hydrologic-chemical interactions in headwater forest wetlands, in Trettin, C.C., M.F. Jurgensen, D.F. Grigal, M.R. Gale and J. Jeglum (eds), Northern Forested Wetlands: Ecology and Managment. CRC/Lewis Publisher, Boca Raton Florida, p. 217-233.
Hill, A.R., 1983. Nitrate-nitrogen mass balances for two Ontario rivers, in T.D. Fontaine and S.M. Bartell (eds.), Dynamics of Lotic Ecosystems, Ann Arbor Science. Ann Arbor, Michigan, 457-477.
Hill, A.R., 1970. The relationship of drumlins to the directions of ice movement in North County Down, in Irish Geographical Studies, (ed.) N. Stephens and R. Glasscock, 53-59. Queen's University Press.
Hill A.R. 2018. Landscape hydrogeology and its influence on patterns of groundwater flux and nitrate removal efficiency in riparian buffers. Journal of the American Water Resources Association (in press).
Hill A.R and Sadowski E.K. 2016. Chloride concentrations in wetlands along a rural to urban land use gradient. Wetlands 36: 73-83.
Hill A.R., Devito K.J. and Vidon P.G. 2014. Long-term nitrate removal in a stream riparian zone. Biogeochemistry 121: 425-439.
Hill A.R. 2012. The impact of pipe flow in riparian peat deposits on nitrate transport and removal. Hydrological Processes 26: 3135-3146.
Bravo D. and Hill A.R. 2012. The effect of chronic high groundwater nitrate loading on riparian forest growth and plant-soil processes. Water Air and Soil Pollution 223: 73-84.
Hill A.R. 2011. Buried organic-rich horizons: their role as nitrogen sources in stream riparian zones. Biogeochemistry 104: 347-363.
Shabaga J.A. and Hill A.R. 2010. Groundwater-fed surface flow path hydrodynamics and nitrate removal in three riparian zones in southern Ontario, Canada. Journal of Hydrology 388: 52-64.
Hill A.R. and Duval T.P. 2009. Beaver dams along an agricultural stream in southern Ontario, Canada: their impact on riparian zone hydrology and nitrogen chemistry. Hydrological Processes 23: 1324-1336.
Kasahara T. and A R. Hill 2008. Modeling the effects of lowland stream restoration projects on stream-subsurface water exchange. Ecological Engineering 32: 310-319.
Kasahara T. and A.R. Hill 2007. Lateral hyporheic zone chemistry in an artificially constructed gravel bar and a re-meandering stream channel, southern Ontario, Canada. Journal of the American Water Resources Association 43: 1-13.
Duval T.P. and A.R. Hill 2007. Influence of base flow stream bank seepage on riparian zone nitrogen biogeochemistry. Biogeochemistry 85:185-199.
Kasahara T. and A. R. Hill 2007. Instream restoration: its effects on lateral stream-subsurface water exchange in urban and agricultural streams in southern Ontario. River Research and Applications 23: 1-14.
Duval T.P. and A.R. Hill 2006. Influence of stream bank seepage during low flow conditions on riparian zone hydrology. Water Resources Research doi:10.1029/2006WR004861.
Vidon P. and A.R. Hill 2006. A landscape based approach to estimate riparian hydrological and nitrate removal functions. Journal of the American Water Resources Association 42: 1099-1112.
Kasahara T and A.R. Hill, 2006. Effects of riffle/step restoration on hyporheic zone chemistry in N-rich lowland streams. Canadian Journal of Fisheries and Aquatic Sciences 63: 120-133.
Kasahara T. and A.R. Hill, 2006. Hyporheic exchange flows induced by constructed riffles and steps in lowland streams. Hydrological Processes 20: 4287-4305.
Vidon, P. and A.R. Hill, 2004. Denitrification and patterns of electron donors and acceptors in 8 riparian zones with contrasting hydrogeology. Biogeochemistry 71, 259-283.
Hill, A.R., P. Vidon and J. Langat, 2004. Denitrification potential in relation to lithology in five headwater riparian zones. Journal of Environmental Quality, 33, 911-919.
Vidon, P. and A.R. Hill, 2004. Landscape controls on nitrate removal in stream riparian zones. Water Resources Research, 40, 03201.D01: 1029/2003 WR 002473.
Vidon, P. and A.R. Hill, 2004. Landscape controls on the hydrology of stream riparian zones. Journal of Hydrology, 292: 210-228.
Hill, A.R. and M. Cardaci, 2004. Denitrification and organic carbon availability in riperian wetland soils and subsurface sediments. Soil Science Society of America Journal, 682: 320-325.
Carlyle, G.C. and A.R. Hill, 2001. Groundwater phosphate dynamics in a river riparian zone: effects of hydrologic flowpaths, lithology and redox chemistry. Journal of Hydrology, 247, 151-168.
Buttle, J.M., S.W. Lister and A.R. Hill, 2001. Controls on runoff components on a forested slope and implications for N transport. Hydrological Processes, 15, 1065-1070.
Hill, A.R., K.J. Devito, S. Campagnolo and K. Sanmugadas, 2000. Subsurface denitrification in a forest riparian zone: interactions between hydrology and supplies of nitrate and organic carbon. Biogeochemistry, 51, 193-223.
Devito, K.J., D. Fitzgerald, A.R. Hill and R. Aravena, 2000. Nitrate dynamics in relation to lithology and hydologic flow path in a river riparian zone. Journal of Environmental Quality, 29, 1075-1084.
Brassard, P., J.M. Waddington, A.R. Hill and N.T. Roulet, 2000. Modelling groundwater-surface water mixing in a headwater wetland: implications for hydrograph separation. Hydrological Processes, 14, 2697-2710.
Hill, A.R., W.A. Kemp, J.M. Buttle and D. Goodyear, 1999. Nitrogen dynamics of subsurface storm runoff on forested Canadian Shield hillslopes. Water Resources Research, 35: 811-824.
Devito, K.J. and A.R. Hill, 1999. Sulphate mobilization and pore water chemistry in relation to groundwater hydrology and summer drought in two conifer swamps on the Canadian Shield. Water, Air and Soil Pollution, 113: 97-114.
Devito, K.J., A.R. Hill and P.J. Dillon, 1999. Episodic sulphate export from wetlands in acidified headwater catchments: prediction at the landscape scale. Biogeochemistry, 44: 187-203.
Hill, A.R., C.F. Labadia and K. Sanmugadas, 1998. Hyporheic zone, hydrology and nitrogen dynamics in relation to the streambed topography of a N-rich stream. Biogeochemistry, 42: 285-310.
Hill, A.R. and D. J. Lymburner, 1998. Hyporheic zone chemistry and stream-subsurface exchange in two groundwater-fed streams. Canadian Journal of Fisheries and Aquatic Sciences, 55: 495-506.
Devito, K.J. and A.R. Hill, 1997. Sulphate dynamics in relation to groundwater-surface water interactions in headwater wetlands of the southern Canadian Shield. Hydrological Processes, 11, 485-500.
Hill, A.R. 1996. Nitrate removal in stream riparian zones. Journal of Environmental Quality, 25, 743-755.
Hill, A.R. and A.M. Brooks, 1996. Coarse particulate organic matter inputs to a headwater swamp stream. Archives fur Hydrobiologia, 137, 25-38.
Devito, K.J., A.R. Hill and N. Roulet, 1996. Groundwater-surface water interactions in headwater forested wetlands of the Canadian Shield. Journal of Hydrology, 181, 127-147.
Hill, A.R. 1993. Base cation chemistry of storm runoff in a forested headwater wetland. Water Resources Research, 29, 2663-2673.
Hill, A.R. 1993. Nitrogen dynamics of storm runoff in the riparian zone of a forested watershed. Biogeochemistry, 20, 19-44.
Allan, C.J.; N.T. Roulet and A.R. Hill, 1993. The biogeochemistry of pristine, headwater Precambrian shield watersheds: an analysis of material transport within a heterogenous landscape. Biogeochemistry, 22, 37-79.
Waddington, J.M.; N.T. Roulet and A.R. Hill, 1993. Runoff mechanisms in a forested groundwater discharge wetland. Journal of Hydrology, 147, 37-60.
Hill, A.R. 1991. A groundwater nitrogen budget for a headwater swamp in an area of permanent groundwater discharge. Biogeochemistry, 14, 209-224.
Hill, A.R. 1990. Groundwater cation concentrations in the riparian zone of a forested headwater stream. Hydrological Processes 4, 121-130.
Hill, A.R. 1990. Groundwater flow paths in relation to nitrogen chemistry in the near-stream zone. Hydrobiologia 206, 39-52.
Hill, A.R. 1990. The biogeochemistry of small headwater wetlands. The Canadian Geographer, 34, 85-86.
Hill, A.R. and M. Shackleton, 1989. Soil N mineralization and nitrification in relation to nitrogen solution chemistry in a small forested watershed. Biogeochemistry, 8, 167-184.
Hill, A.R. 1988. Factors influencing nitrate depletion in a rural stream. Hydrobiologia, 160, 111-122.
Hill, A.R. 1987. Ecosystem stability: Some recent perspectives. Progress in Physical Geography, 11, 315-333.
Hill, A.R. and J. Warwick, 1987. Ammonium transforma¬tions in springwater within the riparian zone of a small woodland stream. Canadian Journal of Fisheries and Aquatic Sciences, 44, 1948-1956.
Hill A.R. 1986. Nitrate and chloride distribution and balance under continuous potato cropping. Agriculture, Ecosystems and Environment, 15, 267-280.
Hill, A.R. 1986. Nitrate nitrogen transformations in rural streams. Canadian Water Resources Journal, 11, 126-134.
Hill, A.R. 1986. Stream nitrate-N loads in relation to variations in annual and seasonal runoff regimes. Water Resources Bulletin, 22, 829-839.
Hill, A.R. and K. Sanmugadas, 1985. Denitrification rates in relation to stream sediment characteristics. Water Research, 19, 1579-1586.
Wyer, M.D. and A.R. Hill, 1984. Nitrate transformations in Southern Ontario stream sediments. Water Resources Bulletin, 20, 729-737.
Hill, A.R. 1983. Denitrification: Its importance in a river draining an intensively cropped watershed. Agriculture, Ecosystems and Environment, 10, 47-62.
Hill, A.R. 1982. Phosphorus and major cation mass balances for two rivers during low summer flows. Freshwater Biology, 12, 293-304.
Hill, A.R. 1982. Nitrate distribution in the ground water of the Alliston region of Ontario, Canada. Ground Water, 20, 696-702.
Hill, A.R. 1981. Nitrate-nitrogen flux and utilization in a stream ecosystem during low summer flows. The Canadian Geographer, 25, 225-239.
Hill, A.R. 1981. Phosphorus exports from watersheds with contrasting land uses in Southern Ontario. Water Resources Bulletin, 17, 627-634.
Hill A.R. 1980. Stream cation concentrations and losses from drainage basins with contrasting land uses in Southern Ontario. Water Research, 14, 1295-1305.
Hill, A.R. 1979. Denitrification in the nitrogen budget of a river ecosystem, Nature, 281, 291-292.
Hill, A.R. 1978. Factors affecting the export of nitrate-nitrogen from drainage basins in Southern Ontario, Water Research, 12, 1045-1057.
Hill, A.R. and N. Wylie, 1977. The influence of nitrogen fertilizers on stream nitrate concentrations near Alliston, Ontario, Canada, Progress in Water Technology, 8, 91-100.
Hill A.R. 1976. The environmental impacts of agricultural land drainage, Journal of Environmental Management, 4, 251-274.
Hill, A.R. 1976. The effects of man-induced erosion and sedimentation on the soils of a portion of the Oak Ridges Moraine, The Canadian Geographer, 30, 38-404.
Found, W.C.; A.R. Hill and E.S. Spence, 1976. A study of the impacts of agricultural land drainage in Ontario, Journal of Soil and Water Conservation, 31, 20-24. Hill, A.R. 1975. Biogeography as a sub-field of Geography, Area, 7, 156-161.
Hill, A.R. 1975. Ecosystem stability in relation to stresses caused by human activities. The Canadian Geographer, 19, 206-220.
Hill, A.R. and W.P. McCague, 1974. Nitrate concentrations in streams near Alliston, Ontario as influenced by nitrogen fertilization of adjacent fields. Journal of Soil and Water Conservation 29, 217-220.
Hill, A.R. 1973. The distribution of drumlins in County Down, Ireland. Annals of the Association of American Geographers 63, 226-240.
Hill, A.R. 1973. Erosion of river banks composed of glacial till near Belfast, Northern Ireland. Zeitschrift für Geomorphologie 17, 428-442.
My research examines the interactions between biogeochemistry and hydrology that regulate stream chemistry in temperate landscapes. I focus on analyzing the role of the near-stream (riparian) zone and the hyporheic zone (the zone of stream water and subsurface water mixing in stream beds) in regulating the biogeochemistry of nitrogen and other mineral elements in agricultural and forested watersheds.
Degrees
Ph.D. (Geography), Queen's University, BelfastB.A. (Geography), Queen's University, Belfast
Research Interests
All Publications
Hill, A.R., 2000. Stream chemistry and riparian zones, in Jones, J. and P. Mulholland (eds), Streams and Groundwaters. Academic Press, New York, p. 84-110.
Hill, A.R., 2000. Beta diversity, p. 48; Carrying capacity, p. 67; Density dependence, p. 118; Ecotype, p. 149; Edaphic, p. 149; r and K selection, p. 371B372; Stability, p. 403B405; Tolerance, p. 438. In Goudie, A. (ed) The Encyclopedic Dictionary of Physical Geography, 3rd edn. Blackwell Ltd., Oxford.
Hill, A.R., 1997. The potential role of in-stream and hyporheic environments as buffer zones, in Haycock, N.E., T.P. Burt, K.W.T. Goulding and G. Pinay (eds), Buffer Zones: Their Processes and Potential in Water Protection. U.K. p. 115-127.
Hill, A.R. and K.J. Devito, 1996. Hydrologic-chemical interactions in headwater forest wetlands, in Trettin, C.C., M.F. Jurgensen, D.F. Grigal, M.R. Gale and J. Jeglum (eds), Northern Forested Wetlands: Ecology and Managment. CRC/Lewis Publisher, Boca Raton Florida, p. 217-233.
Hill, A.R., 1983. Nitrate-nitrogen mass balances for two Ontario rivers, in T.D. Fontaine and S.M. Bartell (eds.), Dynamics of Lotic Ecosystems, Ann Arbor Science. Ann Arbor, Michigan, 457-477.
Hill, A.R., 1970. The relationship of drumlins to the directions of ice movement in North County Down, in Irish Geographical Studies, (ed.) N. Stephens and R. Glasscock, 53-59. Queen's University Press.
Found, W.C.; A.R. Hill and E.S. Spence, 1975. Economic and Environmental Impacts of Land Drainage in Ontario Geographical Monographs No. 6, Atkinson College, Department of Geography, York University, 175pp.
Hill A.R. 2018. Landscape hydrogeology and its influence on patterns of groundwater flux and nitrate removal efficiency in riparian buffers. Journal of the American Water Resources Association (in press).
Hill A.R and Sadowski E.K. 2016. Chloride concentrations in wetlands along a rural to urban land use gradient. Wetlands 36: 73-83.
Hill A.R., Devito K.J. and Vidon P.G. 2014. Long-term nitrate removal in a stream riparian zone. Biogeochemistry 121: 425-439.
Hill A.R. 2012. The impact of pipe flow in riparian peat deposits on nitrate transport and removal. Hydrological Processes 26: 3135-3146.
Bravo D. and Hill A.R. 2012. The effect of chronic high groundwater nitrate loading on riparian forest growth and plant-soil processes. Water Air and Soil Pollution 223: 73-84.
Hill A.R. 2011. Buried organic-rich horizons: their role as nitrogen sources in stream riparian zones. Biogeochemistry 104: 347-363.
Shabaga J.A. and Hill A.R. 2010. Groundwater-fed surface flow path hydrodynamics and nitrate removal in three riparian zones in southern Ontario, Canada. Journal of Hydrology 388: 52-64.
Hill A.R. and Duval T.P. 2009. Beaver dams along an agricultural stream in southern Ontario, Canada: their impact on riparian zone hydrology and nitrogen chemistry. Hydrological Processes 23: 1324-1336.
Kasahara T. and A R. Hill 2008. Modeling the effects of lowland stream restoration projects on stream-subsurface water exchange. Ecological Engineering 32: 310-319.
Kasahara T. and A.R. Hill 2007. Lateral hyporheic zone chemistry in an artificially constructed gravel bar and a re-meandering stream channel, southern Ontario, Canada. Journal of the American Water Resources Association 43: 1-13.
Duval T.P. and A.R. Hill 2007. Influence of base flow stream bank seepage on riparian zone nitrogen biogeochemistry. Biogeochemistry 85:185-199.
Kasahara T. and A. R. Hill 2007. Instream restoration: its effects on lateral stream-subsurface water exchange in urban and agricultural streams in southern Ontario. River Research and Applications 23: 1-14.
Duval T.P. and A.R. Hill 2006. Influence of stream bank seepage during low flow conditions on riparian zone hydrology. Water Resources Research doi:10.1029/2006WR004861.
Vidon P. and A.R. Hill 2006. A landscape based approach to estimate riparian hydrological and nitrate removal functions. Journal of the American Water Resources Association 42: 1099-1112.
Kasahara T and A.R. Hill, 2006. Effects of riffle/step restoration on hyporheic zone chemistry in N-rich lowland streams. Canadian Journal of Fisheries and Aquatic Sciences 63: 120-133.
Kasahara T. and A.R. Hill, 2006. Hyporheic exchange flows induced by constructed riffles and steps in lowland streams. Hydrological Processes 20: 4287-4305.
Vidon, P. and A.R. Hill, 2004. Denitrification and patterns of electron donors and acceptors in 8 riparian zones with contrasting hydrogeology. Biogeochemistry 71, 259-283.
Hill, A.R., P. Vidon and J. Langat, 2004. Denitrification potential in relation to lithology in five headwater riparian zones. Journal of Environmental Quality, 33, 911-919.
Vidon, P. and A.R. Hill, 2004. Landscape controls on nitrate removal in stream riparian zones. Water Resources Research, 40, 03201.D01: 1029/2003 WR 002473.
Vidon, P. and A.R. Hill, 2004. Landscape controls on the hydrology of stream riparian zones. Journal of Hydrology, 292: 210-228.
Hill, A.R. and M. Cardaci, 2004. Denitrification and organic carbon availability in riperian wetland soils and subsurface sediments. Soil Science Society of America Journal, 682: 320-325.
Carlyle, G.C. and A.R. Hill, 2001. Groundwater phosphate dynamics in a river riparian zone: effects of hydrologic flowpaths, lithology and redox chemistry. Journal of Hydrology, 247, 151-168.
Buttle, J.M., S.W. Lister and A.R. Hill, 2001. Controls on runoff components on a forested slope and implications for N transport. Hydrological Processes, 15, 1065-1070.
Hill, A.R., K.J. Devito, S. Campagnolo and K. Sanmugadas, 2000. Subsurface denitrification in a forest riparian zone: interactions between hydrology and supplies of nitrate and organic carbon. Biogeochemistry, 51, 193-223.
Devito, K.J., D. Fitzgerald, A.R. Hill and R. Aravena, 2000. Nitrate dynamics in relation to lithology and hydologic flow path in a river riparian zone. Journal of Environmental Quality, 29, 1075-1084.
Brassard, P., J.M. Waddington, A.R. Hill and N.T. Roulet, 2000. Modelling groundwater-surface water mixing in a headwater wetland: implications for hydrograph separation. Hydrological Processes, 14, 2697-2710.
Hill, A.R., W.A. Kemp, J.M. Buttle and D. Goodyear, 1999. Nitrogen dynamics of subsurface storm runoff on forested Canadian Shield hillslopes. Water Resources Research, 35: 811-824.
Devito, K.J. and A.R. Hill, 1999. Sulphate mobilization and pore water chemistry in relation to groundwater hydrology and summer drought in two conifer swamps on the Canadian Shield. Water, Air and Soil Pollution, 113: 97-114.
Devito, K.J., A.R. Hill and P.J. Dillon, 1999. Episodic sulphate export from wetlands in acidified headwater catchments: prediction at the landscape scale. Biogeochemistry, 44: 187-203.
Hill, A.R., C.F. Labadia and K. Sanmugadas, 1998. Hyporheic zone, hydrology and nitrogen dynamics in relation to the streambed topography of a N-rich stream. Biogeochemistry, 42: 285-310.
Hill, A.R. and D. J. Lymburner, 1998. Hyporheic zone chemistry and stream-subsurface exchange in two groundwater-fed streams. Canadian Journal of Fisheries and Aquatic Sciences, 55: 495-506.
Devito, K.J. and A.R. Hill, 1997. Sulphate dynamics in relation to groundwater-surface water interactions in headwater wetlands of the southern Canadian Shield. Hydrological Processes, 11, 485-500.
Hill, A.R. 1996. Nitrate removal in stream riparian zones. Journal of Environmental Quality, 25, 743-755.
Hill, A.R. and A.M. Brooks, 1996. Coarse particulate organic matter inputs to a headwater swamp stream. Archives fur Hydrobiologia, 137, 25-38.
Devito, K.J., A.R. Hill and N. Roulet, 1996. Groundwater-surface water interactions in headwater forested wetlands of the Canadian Shield. Journal of Hydrology, 181, 127-147.
Hill, A.R. 1993. Base cation chemistry of storm runoff in a forested headwater wetland. Water Resources Research, 29, 2663-2673.
Hill, A.R. 1993. Nitrogen dynamics of storm runoff in the riparian zone of a forested watershed. Biogeochemistry, 20, 19-44.
Allan, C.J.; N.T. Roulet and A.R. Hill, 1993. The biogeochemistry of pristine, headwater Precambrian shield watersheds: an analysis of material transport within a heterogenous landscape. Biogeochemistry, 22, 37-79.
Waddington, J.M.; N.T. Roulet and A.R. Hill, 1993. Runoff mechanisms in a forested groundwater discharge wetland. Journal of Hydrology, 147, 37-60.
Hill, A.R. 1991. A groundwater nitrogen budget for a headwater swamp in an area of permanent groundwater discharge. Biogeochemistry, 14, 209-224.
Hill, A.R. 1990. Groundwater cation concentrations in the riparian zone of a forested headwater stream. Hydrological Processes 4, 121-130.
Hill, A.R. 1990. Groundwater flow paths in relation to nitrogen chemistry in the near-stream zone. Hydrobiologia 206, 39-52.
Hill, A.R. 1990. The biogeochemistry of small headwater wetlands. The Canadian Geographer, 34, 85-86.
Hill, A.R. and M. Shackleton, 1989. Soil N mineralization and nitrification in relation to nitrogen solution chemistry in a small forested watershed. Biogeochemistry, 8, 167-184.
Hill, A.R. 1988. Factors influencing nitrate depletion in a rural stream. Hydrobiologia, 160, 111-122.
Hill, A.R. 1987. Ecosystem stability: Some recent perspectives. Progress in Physical Geography, 11, 315-333.
Hill, A.R. and J. Warwick, 1987. Ammonium transforma¬tions in springwater within the riparian zone of a small woodland stream. Canadian Journal of Fisheries and Aquatic Sciences, 44, 1948-1956.
Hill A.R. 1986. Nitrate and chloride distribution and balance under continuous potato cropping. Agriculture, Ecosystems and Environment, 15, 267-280.
Hill, A.R. 1986. Nitrate nitrogen transformations in rural streams. Canadian Water Resources Journal, 11, 126-134.
Hill, A.R. 1986. Stream nitrate-N loads in relation to variations in annual and seasonal runoff regimes. Water Resources Bulletin, 22, 829-839.
Hill, A.R. and K. Sanmugadas, 1985. Denitrification rates in relation to stream sediment characteristics. Water Research, 19, 1579-1586.
Wyer, M.D. and A.R. Hill, 1984. Nitrate transformations in Southern Ontario stream sediments. Water Resources Bulletin, 20, 729-737.
Hill, A.R. 1983. Denitrification: Its importance in a river draining an intensively cropped watershed. Agriculture, Ecosystems and Environment, 10, 47-62.
Hill, A.R. 1982. Phosphorus and major cation mass balances for two rivers during low summer flows. Freshwater Biology, 12, 293-304.
Hill, A.R. 1982. Nitrate distribution in the ground water of the Alliston region of Ontario, Canada. Ground Water, 20, 696-702.
Hill, A.R. 1981. Nitrate-nitrogen flux and utilization in a stream ecosystem during low summer flows. The Canadian Geographer, 25, 225-239.
Hill, A.R. 1981. Phosphorus exports from watersheds with contrasting land uses in Southern Ontario. Water Resources Bulletin, 17, 627-634.
Hill A.R. 1980. Stream cation concentrations and losses from drainage basins with contrasting land uses in Southern Ontario. Water Research, 14, 1295-1305.
Hill, A.R. 1979. Denitrification in the nitrogen budget of a river ecosystem, Nature, 281, 291-292.
Hill, A.R. 1978. Factors affecting the export of nitrate-nitrogen from drainage basins in Southern Ontario, Water Research, 12, 1045-1057.
Hill, A.R. and N. Wylie, 1977. The influence of nitrogen fertilizers on stream nitrate concentrations near Alliston, Ontario, Canada, Progress in Water Technology, 8, 91-100.
Hill A.R. 1976. The environmental impacts of agricultural land drainage, Journal of Environmental Management, 4, 251-274.
Hill, A.R. 1976. The effects of man-induced erosion and sedimentation on the soils of a portion of the Oak Ridges Moraine, The Canadian Geographer, 30, 38-404.
Found, W.C.; A.R. Hill and E.S. Spence, 1976. A study of the impacts of agricultural land drainage in Ontario, Journal of Soil and Water Conservation, 31, 20-24. Hill, A.R. 1975. Biogeography as a sub-field of Geography, Area, 7, 156-161.
Hill, A.R. 1975. Ecosystem stability in relation to stresses caused by human activities. The Canadian Geographer, 19, 206-220.
Hill, A.R. and W.P. McCague, 1974. Nitrate concentrations in streams near Alliston, Ontario as influenced by nitrogen fertilization of adjacent fields. Journal of Soil and Water Conservation 29, 217-220.
Hill, A.R. 1973. The distribution of drumlins in County Down, Ireland. Annals of the Association of American Geographers 63, 226-240.
Hill, A.R. 1973. Erosion of river banks composed of glacial till near Belfast, Northern Ireland. Zeitschrift für Geomorphologie 17, 428-442.
