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Dr Sarah Mager

LecturerSarah Mager image

MSc(Otago)
PhD(Otago)

 

 

Richardson Building, room 4C23
Office Hours: email to make an appointment
Tel +64 3 479 4222
Email sarah.mager@otago.ac.nz

Teaching

  • GEOG 101 Physical Geography (Hydrology Module)
  • GEOG 290 Field Research Methods (Contributor)
  • GEOG 299 Freshwater Resources: Monitoring and Management
  • GEOG 380 Field Research Studies (Science) - (team taught)
  • GEOG 399 Freshwater Resources: Monitoring and Management
  • GEOG 461 Mountain Hydrology (co-taught with Daniel Kingston)
  • GEOG 470 A Research Topic in Geography
  • GEOG 490 Dissertation
  • GEOG 495 Masters Thesis Preparation

Occasional Contributor to:

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Research interests

Sarah's research interests are as follows:

  1. Chemical weathering and denudation in mountain regions;
  2. Particulate organic carbon and suspended sediment flux;
  3. Water quality and water quantity in riverine systems;
  4. Headwater catchment hydrology in alpine and tussock grasslands;
  5. Hydrological ecosystem services.

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Current research

Sarah's current research interests are in headwater catchment hydrology, including hydrochemistry, water yield and runoff processes. These interests include current research projects examining the hydrochemistry and geochemistry of the Southern Alps (with Dr Simon Cox of GNS Science), the export of particulate organic carbon from tussock grasslands, occult precipitation input into tussock grasslands (with Dr Daniel Kingston), and atmospheric rivers and their influence of terrestrial geochemistry (with Dr Daniel Kingston). Emphasis is particularly in the areas of observing in-field water quality and quantity that can be use to understand hillslope processes, as well as inform hydrological ecosystem services and development of decision-making management tools, specifically, LUCI with Dr Bethanna Jackson and Dr Deborah Maxwell of Victoria University, Wellington.

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Potential student projects

For 2019, potential projects will be focusing on observing water quality to provide validation for LUCI modelling in headwater catchments, and in vulnerable lowland catchments.

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Postgraduate Supervision

Current Supervision

  • Christina Bright, PhD: Particulate organic matter influences on turbidity and suspended sediment concentration in rivers.
  • Victoria Grant, MSc: Quantifying storm water runoff quality into Lake Wanaka.
  • Rosa Kirkham, MSc: Methods for quantifying bedload movement in alluvial channels.
  • Ben Wilkins, MSc: Agricultural practices of fertiliser application in Nepal and their effect on water quality.


Previous Supervision

  • Josie Cairns, 2018 MSc: Vertical Changes in Soil Moisture in a Tussock Grassland Soil. 
  • Sophie Horton, 2018 MSc: Chemical composition of alpine rivers, Southern Alps, New Zealand
  • Henrietta Jackson, 2018 MSc: An Assessment of the Hydrology of the Pool Burn and the Management Opportunities for Restoring Stream Function.
  • Florence Mills, 2018 MSc: Hydrologic Implications of Woody Vegetation Change in Indigenous Snow Tussock Grasslands: A Case Study at Glendhu (with Associate Professor Nicolas Cullen).
  • Kenzie Jackson, 2017 MSc: Understanding the water resources of the Cardrona River, Central Otago.
  • Alexandra King, 2017 MSc: Conveyance of inorganic and organic carbon in mountainous rivers: a case study from the Haast River, Southern Alps, New Zealand.
  • Emily Diack, 2015 MSc: Nutrient Concentrations in the Rivers of the Southern Alps: A Proxy Indicator for Reference Water Quality Conditions in New Zealand.
  • Jessica Pullen, 2015 MAppSc: Response of Diary Farmers, Industry and Government to Drought in the Grey Valley, West Coast - An inquiry into environmental circumstances and multi-level management (with Dr Sean Connelly).
  • Alice Trevelyan, 2015 MSc: Quantifying fog deposition, evapotranspiration, and water yields in snow tussock grasslands.
  • Elisabeth Liddle, 2014 MSc: Assessing the state of the water quality the challenges to provision, and the associated water development considerations in Ndola, Zambia (with Professor Etienne Nel).
  • Michelle Hitchcock, 2014 MSc: Characterising the surface and groundwater interactions in the Waimatuku Stream, Southland.
  • Emma Reeves, 2014, MSc: Modelling the hydrological impacts of land use change and integrating cultural perspectives in the Waikouaiti Catchment, Otago, New Zealand (with Dr Daniel Kingston).
  • Tom McKnight, 2013 MPlan: Planning for Intensive Dairying in the Mackenzie Basin: An inquiry into social and collaborative planning.
  • Alifatul Abu Hanipah, 2013 MAppSc: Water Quality of the Leith River and Lindsay's Creek: the effect of land use and flow variation.
  • Kirsty Duff, 2013 MSc: Catchment Changes Effect on Future River Flow (with Dr Daniel Kingston).
  • Kirsty Dykes, 2013 MSc: Constructed Wetlands for Nutrient Attenuation.
  • Amanda Fountain, 2013 MSc: Solute, suspended sediment and bedload transportation in a pristine temperate forest, Silver Stream, New Zealand.
  • Abigail Lovett (2011) - Origin of mirabilite deposits, Hobbs Glacier, Antarctica (with Professor Sean Fitzsimons)
  • Simon Pollock, 2010 MSc: Assessing groundwater/surface water connectivity and the effect on groundwater quality in Alexandra, Central Otago.

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Publications

Bright, C., Mager, S., & Horton, S. (2020). Response of nephelometric turbidity to hydrodynamic particle size of fine suspended sediment. International Journal of Sediment Research. Advance online publication. doi: 10.1016/j.ijsrc.2020.03.006

Hu, X., Lovelock, B., Ying, T., & Mager, S. (2019). Stakeholder collaboration on policymaking for sustainable water management in Singapore's hotel sector: A network analysis. Sustainability, 11(8), 2360. doi: 10.3390/su11082360

Hu, X., Ying, T., Lovelock, B., & Mager, S. (2019). Sustainable water demand management in the hotel sector: A policy network analysis of Singapore. Journal of Sustainable Tourism, 27(11), 1686-1707. doi: 10.1080/09669582.2019.1652621

Bright, C. E., Mager, S. M., & Horton, S. L. (2019). Catchment-scale influences on riverine organic matter in southern New Zealand. Geomorphology, 353, 107010. doi: 10.1016/j.geomorph.2019.107010

Kingston, D., Mager, S., & Horton, S. (2019). Precipitation source areas for floods in New Zealand: Geochemical and back-trajectory analysis of precipitation from atmospheric rivers. Proceedings of the 27th General Assembly of the International Union of Geodesy and Geophysics (IUGG). Retrieved from http://www.iugg2019montreal.com

Chapter in Book - Research

Mager, S., & Horton, S. (2018). The hydrology of Southern New Zealand. In M. Strack, N. Wheen, B. Lovelock & A. Carr (Eds.), Riverscapes: Research essays on the social context of southern catchments of Aotearoa New Zealand. (pp. 17-29). Dunedin, New Zealand: University of Otago.

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Journal - Research Article

Bright, C., Mager, S., & Horton, S. (2020). Response of nephelometric turbidity to hydrodynamic particle size of fine suspended sediment. International Journal of Sediment Research. Advance online publication. doi: 10.1016/j.ijsrc.2020.03.006

Hu, X., Lovelock, B., Ying, T., & Mager, S. (2019). Stakeholder collaboration on policymaking for sustainable water management in Singapore's hotel sector: A network analysis. Sustainability, 11(8), 2360. doi: 10.3390/su11082360

Bright, C. E., Mager, S. M., & Horton, S. L. (2019). Catchment-scale influences on riverine organic matter in southern New Zealand. Geomorphology, 353, 107010. doi: 10.1016/j.geomorph.2019.107010

Hu, X., Ying, T., Lovelock, B., & Mager, S. (2019). Sustainable water demand management in the hotel sector: A policy network analysis of Singapore. Journal of Sustainable Tourism, 27(11), 1686-1707. doi: 10.1080/09669582.2019.1652621

Bright, C. E., Mager, S. M., & Horton, S. L. (2018). Predicting suspended sediment concentration from nephelometric turbidity in organic-rich waters. River Research & Applications, 34(7), 640-648. doi: 10.1002/rra.3305

Mager, S. M., Diack, E. E., & Horton, S. L. (2018). Catchment-scale weathering fluxes in the Southern Alps, New Zealand. Geomorphology, 316, 24-34. doi: 10.1016/j.geomorph.2018.05.011

Mager, S. M., & Trevelyan, A. M. (2016). Quantifying the amount and incidence of fog at a mid-altitude site in the Saint Marys Range, Otago, New Zealand. Journal of Hydrology (New Zealand), 55(2), 107-120.

Bright, C. E., & Mager, S. M. (2016). Contribution of particulate organic matter to riverine suspended material in Glendhu Experimental Catchments, Otago, New Zealand. Journal of Hydrology (New Zealand), 55(2), 89-105.

Liddle, E. S., Mager, S. M., & Nel, E. L. (2016). The importance of community-based informal water supply systems in the developing world and the need for formal sector support. Geographical Journal, 182(1), 85-96. doi: 10.1111/geoj.12117

Cairns, J. A., & Mager, S. M. (2016). A pilot investigation into soil water movement in shall subalpine soils. Journal of Hydrology (New Zealand), 55(2), 135-142.

Liddle, E. S., Mager, S. M., & Nel, E. L. (2015). The suitability of shallow hand dug wells for safe water provision in sub-Saharan Africa: Lessons from Ndola, Zambia. Applied Geography, 57, 80-90. doi: 10.1016/j.apgeog.2014.12.010

Holland, P., & Mager, S. (2015). Environmental influences on rabbit numbers and control methods in southern New Zealand between 1860 and 1930. New Zealand Geographer, 71(3), 203-216. doi: 10.1111/nzg.12095

Mager, S. M., Leonard, G. H., Pauling, A. G., & Smith, I. J. (2015). A framework for estimating anchor ice extent at potential formation sites in McMurdo Sound, Antarctica. Annals of Glaciology, 56(69), 394-404. doi: 10.3189/2015AoG69A711

Liddle, E., Mager, S. M., & Nel, E. (2014). Water quality awareness and barriers to safe water provisioning in informal communities: A case study from Ndola, Zambia. Bulletin of Geography, 26(26), 167-181. doi: 10.2478/bog-2014-0052

Leonard, G. H., Mager, S. M., Pauling, A. G., Hughes, K. G., & Smith, I. J. (2014). Towards a process model for predicting potential anchor ice formation sites in coastal Antarctic waters. Journal of Spatial Science, 59(2), 297-312. doi: 10.1080/14498596.2014.913271

Mager, S., & Spronken-Smith, R. (2014). Graduate attribute attainment in a multi-level undergraduate geography course. Journal of Geography in Higher Education, 38(2), 238-250. doi: 10.1080/03098265.2014.910757

Mager, S. M., Smith, I. J., Kempema, E., Thomson, B. J., & Leonard, G. H. (2013). Anchor ice in polar oceans. Progress in Physical Geography, 37(4), 468-483. doi: 10.1177/0309133313479815

Fitzsimons, S., Mager, S., Frew, R., Clifford, A., & Wilson, G. (2012). Formation of ice-shelf moraines by accretion of sea water and marine sediment at the southern margin of the McMurdo Ice Shelf, Antarctica. Annals of Glaciology, 53(60), 211-220. doi: 10.3189/2012AoG60A155

Mager, S., Fitzsimons, S., Frew, R., Samyn, D., & Lorrain, R. (2009). Composition and origin of amber ice and its influence on the behaviour of cold glaciers in the McMurdo Dry Valleys, Antarctica. Journal of Glaciology, 55(190), 363-372. doi: 10.3189/002214309788608688

Fitzsimons, S., Webb, N., Mager, S., MacDonell, S., Lorrain, R., & Samyn, D. (2008). Mechanisms of basal ice formation in polar glaciers: An evaluation of the apron entrainment model. Journal of Geophysical Research, 113, F02010. doi: 10.1029/2006JF000698

Mager, S., & Fitzsimons, S. (2007). Formation of glaciolacustrine Late Pleistocene end moraines in the Tasman Valley, New Zealand. Quaternary Science Reviews, 26, 743-758. doi: 10.1016/j.quascirev.2006.11.012

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Journal - Professional & Other Non-Research Articles

Mager, S. (2014). [Review of the book Climatic change and global warming of inland waters: Impacts and mitigation for ecosystems and societies]. New Zealand Geographer, 70(1), 81-82. doi: 10.1111/nzg.12043

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Conference Contribution - Published proceedings: Full paper

Leonard, G., Pauling, A., Mager, S., & Smith, I. (2013). Predicting potential anchor ice formation sites in coastal Antarctic waters. In P. Denys, M. Strack, A. B. Moore & P. Whigham (Eds.), Proceedings of the 125th New Zealand Institute of Surveyors (NZIS) Annual Conference and the Spatial Information Research Centre New Zealand (SIRC NZ) GIS and Remote Sensing Research Conference: Celebrating the Past: Redefining the Future. (pp. 110-112). Wellington, New Zealand: New Zealand Institute of Surveyors. [Full Paper]

Mager, S., Fitzsimons, S., Frew, R., & Samyn, D. (2007). Stable isotope composition of the basal ice from Taylor Glacier, southern Victoria Land, Antarctica. In A. Cooper & C. Raymond (Eds.), Proceedings of the 10th International Symposium on Antarctic Earth Sciences (ISAES): Antarctica: A Keystone in a Changing World. (109). U.S Geological Survey. doi: 10.3133/of2007-1047

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Conference Contribution - Published proceedings: Abstract

Kingston, D., Mager, S., & Horton, S. (2019). Precipitation source areas for floods in New Zealand: Geochemical and back-trajectory analysis of precipitation from atmospheric rivers. Proceedings of the 27th General Assembly of the International Union of Geodesy and Geophysics (IUGG). Retrieved from http://www.iugg2019montreal.com

Bright, C., & Mager, S. (2018). Particulate organic matter, suspended sediment and turbidity in Otago, New Zealand tussock grasslands. Geophysical Research Abstracts, 20, EGU2018-102. [Abstract]

Diack, E. E., & Mager, S. M. (2015). Quantifying nutrient export from pristine upland catchments. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 35). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Trevelyan, A., & Mager, S. (2015). The significance of fog deposition to increased water yield: Timber Creek, Central Otago. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 54). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Isaacs, F., Kingston, D., & Mager, S. (2015). Methods of estimating potential evapotranspiration over snow tussock grassland. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 11). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Jones, R., Kingston, D., & Mager, S. (2015). Runoff modelling in New Zealand: A comparison of TopNet and HBV-light. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 15). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

King, A., & Mager, S. (2015). Carbon and silica flux in alpine catchments. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 16). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Hu, X., Lovelock, B., Ying, T., & Mager, S. (2015). Sustainable water management in the hotel industry: A preliminary policy network analysis of Singapore. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 42). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Bright, C., & Mager, S. (2015). Pine forestry clear felling impact on water quality: Case study from Glendhu experimental catchment. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 6). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Jackson, K., & Mager, S. (2015). Using environmental tracers to determine nitrate source in Waimea Plains, Southland. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 12). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Loft, J., Kingston, D., & Mager, S. (2015). Determining between water scarcity and drought in the Lindis River, Central Otago New Zealand. In C. Ergler & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 45). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Diack, E. E., & Mager, S. M. (2014). Dissolved organic carbon and silica concentrations from pristine alpine catchments. Proceedings of the Water Symposium Joint Conference of the New Zealand Hydrological Society, New Zealand Freshwaters Society and IPENZ Rivers Group: Integration: 'The Final Frontier'. Retrieved from http://www.2014watersymposium.co.nz/abstracts/oral-abstracts/

Liddle, E., Mager, S., & Nel, E. (2014). Assessing the water quality, the challenges to provision, and the associated water development considerations in Ndola, Zambia. Proceedings of the African Studies Association of Australasia and the Pacific (AFSAAP) Annual Conference. (pp. 52). AFSAAP. [Abstract]

Mager, S., Leonard, G., Smith, I., & Pauling, A. (2014). Using bathymetric data to predict anchor ice formation sites in McMurdo Sound, Antarctica. Proceedings of the International Glaciological Society (IGS) International Symposium on Sea Ice in a Changing Environment. Retrieved from http://www.igsoc.org/symposia/2014/hobart/

Hitchcock, M., Kees, L., Rissmann, C., & Mager, S. M. (2014). Hydrogeochemical investigation into lowland catchment surface and groundwater interactions. Proceedings of the Water Symposium Joint Conference of the New Zealand Hydrological Society, New Zealand Freshwaters Society and IPENZ Rivers Group: Integration: 'The Final Frontier'. Retrieved from http://www.2014watersymposium.co.nz/abstracts/oral-abstracts/

Peren, S., Kingston, D., & Mager, S. (2014). Sustainable freshwater management under future climate scenarios and land use change in the Kakanui Catchment, Otago, New Zealand. In T. Konlechner & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 49). Retrieved from http://www.geography.otago.ac.nz/resources

Mager, S. M., & Diack, E. E. (2014). Geomorphological and climatic influences on the hydrochemical facies of southern alps rivers. Proceedings of the Water Symposium Joint Conference of the New Zealand Hydrological Society, New Zealand Freshwaters Society and IPENZ Rivers Group: Integration: 'The Final Frontier'. Retrieved from http://www.2014watersymposium.co.nz/abstracts/oral-abstracts/

Pullen, J., Connelly, S., & Mager, S. (2014). Response strategies of the dairy farming community of the Grey Valley to drought, proactive or reactive? A qualitative investigation. In T. Konlechner & S. Connelly (Eds.), Proceedings of the Postgraduate Symposium. (pp. 50). Retrieved from http://www.geography.otago.ac.nz/resources

Severinsen, K. M., McDowell, R. W., & Mager, S. M. (2014). Controls on phosphorus concentrations under baseflow and stormflow events. Proceedings of the Water Symposium Joint Conference of the New Zealand Hydrological Society, New Zealand Freshwaters Society and IPENZ Rivers Group: Integration: 'The Final Frontier'. Retrieved from http://www.2014watersymposium.co.nz/abstracts/oral-abstracts/

Trevelyan, A. M., Mager, S. M., & Wilson, P. (2014). Fog deposition and contribution to water yield in Timber Creek, North Otago. Proceedings of the Water Symposium Joint Conference of the New Zealand Hydrological Society, New Zealand Freshwaters Society and IPENZ Rivers Group: Integration: 'The Final Frontier'. Retrieved from http://www.2014watersymposium.co.nz/abstracts/oral-abstracts/

Pauling, A., Leonard, G., Mager, S., & Smith, I. (2013). Modelling the spatial distribution and extent of anchor ice in Antarctica. Proceedings of the New Zealand Snow and Ice Research Group (SIRG) Annual Workshop. (pp. 38). Retrieved from http://www.sirg.org.nz/abstracts/SIRG2013_proceedings_v3.pdf

Mager, S. (2012). Anchor ice in polar oceans. Proceedings of the Polar Environment Research Theme (PERT) Workshop. Retrieved from http://polarresearch.otago.ac.nz/pert-workshop-2012/

Lovett, A. P., Fitzsimons, S. J., & Mager, S. M. (2011). An investigation into the origin, formation and deformation of mirabilite deposits, Hobbs Glacier Region, Antarctica. Proceedings of the New Zealand Snow and Ice Research Group (SIRG) Annual Workshop. (pp. 19). Retrieved from http://www.sirg.org.nz/abstracts/SIRG2011FoxGlacier_Programme.pdf

Lovett, A. P., Fitzsimons, S. J., & Mager, S. M. (2010). An investigation into the origin, formation and deformation of Mirabilite deposits, Hobbs Glacier Region, Antarctica. In W. Stephenson (Ed.), Proceedings of the Geography Postgraduate Symposium. (pp. 27). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

Fountain, A., & Mager, S. (2010). Nutrient mobilisation during high flows on the Silver Stream, New Zealand. In W. Stephenson (Ed.), Proceedings of the Geography Postgraduate Symposium. (pp. 14). Dunedin, New Zealand: Department of Geography, University of Otago. [Abstract]

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