All Outputs (80)

Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology (2017)
Journal Article
Pompeu, P. V., Rocha, H., Poca, M., Johnson, M., Krishnaswamy, J., Hamel, P., …Jasechko, S. (2018). Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology. Ecohydrology, 11(3), Article e1921. https://doi.org/10.1002/eco.1921

In response to increasing pressures on water resources, watershed services management programs are implemented throughout the tropics. These programs aim to promote land management activities that enhance the quantity and quality of water available t... Read More about Watershed services in the humid tropics: Opportunities from recent advances in ecohydrology.

Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau (2017)
Journal Article
Pan, X., Yu, Q., You, Y., Chun, K. P., Shi, X., & Li, Y. (2017). Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau. Journal of Hydrology, 555, 621-630. https://doi.org/10.1016/j.jhydrol.2017.10.046

The seasonal hydrological mechanisms of two thermokarst lakes on the northeastern Qinghai-Tibet Plateau (QTP) were characterized by three-year intensive field observations and a water balance model. In three ice-free seasons, the supra-permafrost dis... Read More about Contribution of supra-permafrost discharge to thermokarst lake water balances on the northeastern Qinghai-Tibet Plateau.

Advancing ecohydrology in the changing tropics: Perspectives from early career scientists (2017)
Journal Article
Wright, C., Kagawa-Viviani, A., Gerlein-Safdi, C., Mosquera, G., Poca, M., Tseng, H., & Chun, K. P. (2018). Advancing ecohydrology in the changing tropics: Perspectives from early career scientists. Ecohydrology, 11(3), Article e1918. https://doi.org/10.1002/eco.1918

Tropical ecosystems offer a unique setting for understanding ecohydrological processes, but to date, such investigations have been limited. The purpose of this paper is to highlight the importance of studying these processes—specifically, how they ar... Read More about Advancing ecohydrology in the changing tropics: Perspectives from early career scientists.

DIY meteorology: Use of citizen science to monitor snow dynamics in a data-sparse city (2017)
Journal Article
Appels, W. M., Bradford, L., Chun, K. P., Coles, A. E., & Strickert, G. (2017). DIY meteorology: Use of citizen science to monitor snow dynamics in a data-sparse city. FACETS, 2(2), 734-753. https://doi.org/10.1139/facets-2017-0030

Cities are under pressure to operate their services effectively and project costs of operations across various timeframes. In high-latitude and high-altitude urban centers, snow management is one of the larger unknowns and has both operational and bu... Read More about DIY meteorology: Use of citizen science to monitor snow dynamics in a data-sparse city.

Recent increases in permafrost thaw rates and areal loss of palsas in the Western Northwest Territories, Canada (2017)
Journal Article
Mamet, S. D., Chun, K. P., Kershaw, G. G., Loranty, M. M., & Peter Kershaw, G. (2017). Recent increases in permafrost thaw rates and areal loss of palsas in the Western Northwest Territories, Canada. Permafrost and Periglacial Processes, 28(4), 619-633. https://doi.org/10.1002/ppp.1951

Decay of palsas can indicate permafrost status, particularly in regions where air temperatures have increased rapidly in recent decades. Using weather data, annual surveys of active-layer thickness, and analyses of high-resolution aerial imagery from... Read More about Recent increases in permafrost thaw rates and areal loss of palsas in the Western Northwest Territories, Canada.

Spatial distribution of livestock and poultry farm based on livestock manure nitrogen load on farmland and suitability evaluation (2017)
Journal Article
Yan, B., Shi, W., Yan, J., & Chun, K. P. (2017). Spatial distribution of livestock and poultry farm based on livestock manure nitrogen load on farmland and suitability evaluation. Computers and Electronics in Agriculture, 139, 180-186. https://doi.org/10.1016/j.compag.2017.05.013

A spatial distribution model of livestock manure nutrient was used to study the spatial distribution of livestock manure and livestock manure nitrogen load on farmland (LMNLF) at a patch scale. The spatial distribution of livestock and poultry farm (... Read More about Spatial distribution of livestock and poultry farm based on livestock manure nitrogen load on farmland and suitability evaluation.

A novel stochastic method for reconstructing daily precipitation times-series using tree-ring data from the western Canadian Boreal Forest (2017)
Journal Article
Chun, K. P., Mamet, S. D., Metsaranta, J., Barr, A., Johnstone, J., & Wheater, H. (2017). A novel stochastic method for reconstructing daily precipitation times-series using tree-ring data from the western Canadian Boreal Forest. Dendrochronologia, 44, 9-18. https://doi.org/10.1016/j.dendro.2017.01.003

Tree ring data provide proxy records of historical hydroclimatic conditions that are widely used for reconstructing precipitation time series. Most previous applications are limited to annual time scales, though information about daily precipitation... Read More about A novel stochastic method for reconstructing daily precipitation times-series using tree-ring data from the western Canadian Boreal Forest.

Trend analysis of nutrient loadings in a large prairie catchment (2016)
Journal Article
Morales-Marín, L. A., Chun, K. P., Wheater, H. S., & Lindenschmidt, K. E. (2017). Trend analysis of nutrient loadings in a large prairie catchment. Hydrological Sciences Journal, 62(4), 657-679. https://doi.org/10.1080/02626667.2016.1255747

Nutrient loadings in many river catchments continue to increase due to rapid expansion of agriculture, urban and industrial development, and population growth. Nutrient enrichment of water bodies has intensified eutrophication which degrades water qu... Read More about Trend analysis of nutrient loadings in a large prairie catchment.

Parameter sensitivity of a surface water quality model of the lower South Saskatchewan River—Comparison between ice-on and ice-off periods (2016)
Journal Article
Hosseini, N., Chun, K. P., Wheater, H., & Lindenschmidt, K. E. (2017). Parameter sensitivity of a surface water quality model of the lower South Saskatchewan River—Comparison between ice-on and ice-off periods. Environmental Modeling and Assessment, 22(4), 291-307. https://doi.org/10.1007/s10666-016-9541-3

Little is known about seasonal differences (ice-on vs. ice-off periods) and the sensitivity of in-stream processes to surface water quality constituents in rivers that have a persistent ice cover in winter. The goal of this study is to investigate th... Read More about Parameter sensitivity of a surface water quality model of the lower South Saskatchewan River—Comparison between ice-on and ice-off periods.

Assessing the relative importance of parameter and forcing uncertainty and their interactions in conceptual hydrological model simulations (2016)
Journal Article
Mockler, E. M., Chun, K. P., Sapriza-Azuri, G., Bruen, M., & Wheater, H. S. (2016). Assessing the relative importance of parameter and forcing uncertainty and their interactions in conceptual hydrological model simulations. Advances in Water Resources, 97, 299-313. https://doi.org/10.1016/j.advwatres.2016.10.008

Predictions of river flow dynamics provide vital information for many aspects of water management including water resource planning, climate adaptation, and flood and drought assessments. Many of the subjective choices that modellers make including m... Read More about Assessing the relative importance of parameter and forcing uncertainty and their interactions in conceptual hydrological model simulations.

Forms and drivers of annual streamflow variability in the headwaters of Canadian Prairies during the 20th century (2016)
Journal Article
Nazemi, A., Wheater, H. S., Chun, K. P., Bonsal, B., & Mekonnen, M. (2017). Forms and drivers of annual streamflow variability in the headwaters of Canadian Prairies during the 20th century. Hydrological Processes, 31(1), 221-239. https://doi.org/10.1002/hyp.11036

Headwater streamflows in the Rocky Mountain foothills are the key to water availability in the Canadian Prairies. Headwater characteristics, however, have been and continue to be subject to major variability and change. Here, we identify various form... Read More about Forms and drivers of annual streamflow variability in the headwaters of Canadian Prairies during the 20th century.

The effect of fallow period length on the abundance and diversity of usable plant assemblages in shifting cultivation system (Swidden agriculture) in northern Laos (2016)
Journal Article
Delang, C. O., Weiyi, X., Brooke, B., & Chun, K. P. (2016). The effect of fallow period length on the abundance and diversity of usable plant assemblages in shifting cultivation system (Swidden agriculture) in northern Laos. Polish Journal of Ecology, 64(3), 350-356. https://doi.org/10.3161/15052249PJE2016.64.3.005

Shifting cultivation, or swiddening, involves alternating cycles of cropping and fallow periods. Rather than being abandoned, the fallow swidden fields provide a source of important plant products for remote, forest-dwelling human communities. In nor... Read More about The effect of fallow period length on the abundance and diversity of usable plant assemblages in shifting cultivation system (Swidden agriculture) in northern Laos.

Quantifying spatial changes in the structure of water quality constituents in a large prairie river within two frameworks of a water quality model (2016)
Journal Article
Hosseini, N., Chun, K. P., & Lindenschmidt, K. E. (2016). Quantifying spatial changes in the structure of water quality constituents in a large prairie river within two frameworks of a water quality model. Water, 8(4), Article 158. https://doi.org/10.3390/w8040158

A global sensitivity analysis was carried out on a water quality model to quantify the spatial changes in parameter sensitivity of a model of a large prairie river, the South Saskatchewan River (SSR). The method is used to assess the relative impacts... Read More about Quantifying spatial changes in the structure of water quality constituents in a large prairie river within two frameworks of a water quality model.

What is the most efficient and effective method for long-term monitoring of alpine tundra vegetation? (2016)
Journal Article
Mamet, S. D., Young, N., Chun, K. P., & Johnstone, J. F. (2016). What is the most efficient and effective method for long-term monitoring of alpine tundra vegetation?. Arctic Science, 2(3), 127-141. https://doi.org/10.1139/as-2015-0020

Nondestructive estimations of plant community characteristics are essential to vegetation monitoring programs. However, there is no universally accepted method for this purpose in the Arctic, partly because not all programs share the same logistical... Read More about What is the most efficient and effective method for long-term monitoring of alpine tundra vegetation?.

Insights into plant water uptake from xylem-water isotope measurements in two tropical catchments with contrasting moisture conditions (2016)
Journal Article
Evaristo, J., McDonnell, J. J., Scholl, M. A., Bruijnzeel, L. A., & Chun, K. P. (2016). Insights into plant water uptake from xylem-water isotope measurements in two tropical catchments with contrasting moisture conditions. Hydrological Processes, 30(18), 3210-3227. https://doi.org/10.1002/hyp.10841

Water transpired by trees has long been assumed to be sourced from the same subsurface water stocks that contribute to groundwater recharge and streamflow. However, recent investigations using dual water stable isotopes have shown an apparent ecohydr... Read More about Insights into plant water uptake from xylem-water isotope measurements in two tropical catchments with contrasting moisture conditions.

Dynamic water quality modelling and uncertainty analysis of phytoplankton and nutrient cycles for the upper South Saskatchewan River (2015)
Journal Article
Akomeah, E., Chun, K. P., & Lindenschmidt, K. E. (2015). Dynamic water quality modelling and uncertainty analysis of phytoplankton and nutrient cycles for the upper South Saskatchewan River. Environmental Science and Pollution Research, 22(22), 18239-18251. https://doi.org/10.1007/s11356-015-4970-0

The surface water quality of the upper South Saskatchewan River was modelled using Water Quality Analysis Simulation Program (WASP) 7.52. Model calibration and validation were based on samples taken from four long-term water quality stations during t... Read More about Dynamic water quality modelling and uncertainty analysis of phytoplankton and nutrient cycles for the upper South Saskatchewan River.

Who smells? Forecasting taste and odor in a drinking water reservoir (2015)
Journal Article
Kehoe, M. J., Chun, K. P., & Baulch, H. M. (2015). Who smells? Forecasting taste and odor in a drinking water reservoir. Environmental Science and Technology, 49(18), 10984-10992. https://doi.org/10.1021/acs.est.5b00979

Taste and odor problems can impede public trust in drinking water and impose major costs on water utilities. The ability to forecast taste and odor events in source waters, in advance, is shown for the first time in this paper. This could allow water... Read More about Who smells? Forecasting taste and odor in a drinking water reservoir.

Tree rings provide early warning signals of jack pine mortality across a moisture gradient in the southern boreal forest (2015)
Journal Article
Mamet, S. D., Chun, K. P., Metsaranta, J. M., Barr, A. G., & Johnstone, J. F. (2015). Tree rings provide early warning signals of jack pine mortality across a moisture gradient in the southern boreal forest. Environmental Research Letters, 10(8), https://doi.org/10.1088/1748-9326/10/8/084021

Recent declines in productivity and tree survival have been widely observed in boreal forests. We used early warning signals (EWS) in tree ring data to anticipate premature mortality in jack pine (Pinus banksiana) - an extensive and dominant species... Read More about Tree rings provide early warning signals of jack pine mortality across a moisture gradient in the southern boreal forest.

An efficient calibration technique for heat dissipation matric water potential sensors (2015)
Journal Article
Pan, X., Ireson, A. M., Helgason, W., & Chun, K. P. (2015). An efficient calibration technique for heat dissipation matric water potential sensors. Soil Science Society of America Journal, 79(4), 1115-1122. https://doi.org/10.2136/sssaj2014.10.0413

Heat dissipation sensors are used to measure matric potential in soils. A van Genuchten equation can be used to fit the relationship between measured heat dissipation and matric potential. Calibration is required for each probe because of intrinsic v... Read More about An efficient calibration technique for heat dissipation matric water potential sensors.

Unpacking viewpoints on water security: Lessons from the South Saskatchewan River Basin (2015)
Journal Article
Strickert, G., Chun, K. P., Bradford, L., Clark, D., Gober, P., Reed, M. G., & Payton, D. (2016). Unpacking viewpoints on water security: Lessons from the South Saskatchewan River Basin. Water Policy, 18(1), 50-72. https://doi.org/10.2166/wp.2015.195

Water is essential for human development and the environment; however, its security is challenged by factors such as competing uses, over extraction, and divergent perspectives. The focus of this paper is to better understand how different stakeholde... Read More about Unpacking viewpoints on water security: Lessons from the South Saskatchewan River Basin.