Hillary Hamann | University of Denver (original) (raw)

Papers by Hillary Hamann

Research paper thumbnail of Soil Hydrologic Response and Nutrient Movement in Three Small Tropical Catchments

AGUFM, Dec 1, 2004

The movement of water over and through soils by storm-generated flowpaths in tropical forests not... more The movement of water over and through soils by storm-generated flowpaths in tropical forests not only mediates nutrient movement and physical weathering, but also potentially influences vegetation growth and dynamics with seasonally dry or saturated soil conditions. However, few small-scale catchment studies (10-1000ha) have produced a comprehensive, standardized dataset on soil hydrologic properties among tropical forest catchments, due in part

Research paper thumbnail of The Ionic Pulse From Snowmelt: Inter-Annual Variation at Niwot Ridge, CO

AGU Fall Meeting Abstracts, Dec 1, 2002

We present a 7-year data set of snowmelt discharge and chemistry from lysimeters located at 3500 ... more We present a 7-year data set of snowmelt discharge and chemistry from lysimeters located at 3500 m on Niwot Ridge (40.05°N, 105.59°W) in the Colorado Front Range in order to confirm past findings from the literature that snow depth, melt-freeze cycles and melt rates control the magnitude of the ionic pulse. Niwot Ridge and the adjacent Green Lakes are relatively pristine due to limited public access; however, close proximity to the major metropolitan area of Denver-Boulder-Fort Collins results in atmospheric deposition of ionic loads that are higher than in many other alpine locations in the western U.S. Our analysis suggests that the best predictor of the magnitude of the annual ionic pulse is snowpack depth and snow water equivalence (SWE). Over seven seasons (1994-2000), meltwater ions were least concentrated in years with shallow snowpacks and low SWE, and most concentrated in years with deep snowpacks and high SWE. Annual concentration factors (C{bulk snow}/Csnowmelt) were also compared with estimates of annual ion depletion as a function of snow ablation. These comparisons suggest higher inter-annual variability in the former than in the latter. Maximum solute concentrations were most often recorded in the first 1-7 days of snowmelt when meltwater flow into the lysimeters was slower and sporadic. Additionally, most ion concentrations were negatively correlated with melt rates. Recession analysis of lysimeter discharge suggests that slower drainage from the snowpack early and faster drainage later in the melt cycle may have contributed to observed patterns of snowmelt solute concentrations.

Research paper thumbnail of A Comparison of Runoff Pathways and Nutrient Export in Small Tropical Forest Catchments

The Center for Tropical Forest Research (CTFS), a program of the Smithsonian Tropical Research In... more The Center for Tropical Forest Research (CTFS), a program of the Smithsonian Tropical Research Institute (STRI), has coordinated a global network of 17 tropical forest dynamics plots of approximately 50 hectares in order to collect baseline information and to monitor forest changes. Missing from most past studies of these plots is an integrated soil hydrology and water chemistry component. To

Research paper thumbnail of Classifying connectivity to guide aquatic habitat management in an arctic coastal plain watershed experiencing land use and climate change

Arctic, Antarctic, and Alpine Research, 2020

Research paper thumbnail of Assessing Student Learning in Field Courses Using Oral Exams

The Geography Teacher, 2020

Research paper thumbnail of Nurtured on Wikipedia, Can an Honor Code Foster Better Student Writers?

New Directions for Community Colleges, 2018

Research paper thumbnail of What We Know about Water: A Water Literacy Review

Water, 2020

Water literacy, or the culmination of water-related knowledge, attitudes and behaviors, is a rela... more Water literacy, or the culmination of water-related knowledge, attitudes and behaviors, is a relatively new field of study with growing importance for sustainable water management and social water equity. However, its definition and use across existing literature are varied and often inconsistent. This paper seeks to synthesize and streamline the conception of water literacy. We conducted a systematic review of literature that defines or describes in detail either “water literacy” or “watershed literacy”. From this, we suggest a new holistic framework for water literacy to guide a more inclusive, relevant use of the concept. We utilized the framework to examine existing surveys and studies of water knowledge, attitudes and behaviors in both student and adult populations, and summarized water literacy levels and knowledge gaps that exist around the world. To address knowledge gaps, we suggest using a suite of approaches drawn from the published literature, including enhanced visuals,...

Research paper thumbnail of ALPINE AREAS IN THE COLORADO FRONT RANGE AS MONITORS OF CLIMATE CHANGE AND ECOSYSTEM RESPONSE

Research paper thumbnail of Integrating Watershed Management with Learning: The Role of Information Transfer in Linking Educators and Students with Community Watershed Partners

Comparative Technology Transfer and Society, 2006

... 2001, p. 2) by combining community service with learning as a reflectional and relation-al pe... more ... 2001, p. 2) by combining community service with learning as a reflectional and relation-al pedagogy (Heffernan, 2001; Younos et al ... or faculty researchers (eg, LaSage, Jones, & Edwards, 2006; Sherwin & Tamminga, 2001; Tedesco & Salazar, 2006; Walker, You-nos, & Raflo ...

Research paper thumbnail of Soil Hydrologic Response and Nutrient Movement in Three Small Tropical Catchments

AGUFM, Dec 1, 2004

The movement of water over and through soils by storm-generated flowpaths in tropical forests not... more The movement of water over and through soils by storm-generated flowpaths in tropical forests not only mediates nutrient movement and physical weathering, but also potentially influences vegetation growth and dynamics with seasonally dry or saturated soil conditions. However, few small-scale catchment studies (10-1000ha) have produced a comprehensive, standardized dataset on soil hydrologic properties among tropical forest catchments, due in part

Research paper thumbnail of The Ionic Pulse From Snowmelt: Inter-Annual Variation at Niwot Ridge, CO

AGU Fall Meeting Abstracts, Dec 1, 2002

We present a 7-year data set of snowmelt discharge and chemistry from lysimeters located at 3500 ... more We present a 7-year data set of snowmelt discharge and chemistry from lysimeters located at 3500 m on Niwot Ridge (40.05°N, 105.59°W) in the Colorado Front Range in order to confirm past findings from the literature that snow depth, melt-freeze cycles and melt rates control the magnitude of the ionic pulse. Niwot Ridge and the adjacent Green Lakes are relatively pristine due to limited public access; however, close proximity to the major metropolitan area of Denver-Boulder-Fort Collins results in atmospheric deposition of ionic loads that are higher than in many other alpine locations in the western U.S. Our analysis suggests that the best predictor of the magnitude of the annual ionic pulse is snowpack depth and snow water equivalence (SWE). Over seven seasons (1994-2000), meltwater ions were least concentrated in years with shallow snowpacks and low SWE, and most concentrated in years with deep snowpacks and high SWE. Annual concentration factors (C{bulk snow}/Csnowmelt) were also compared with estimates of annual ion depletion as a function of snow ablation. These comparisons suggest higher inter-annual variability in the former than in the latter. Maximum solute concentrations were most often recorded in the first 1-7 days of snowmelt when meltwater flow into the lysimeters was slower and sporadic. Additionally, most ion concentrations were negatively correlated with melt rates. Recession analysis of lysimeter discharge suggests that slower drainage from the snowpack early and faster drainage later in the melt cycle may have contributed to observed patterns of snowmelt solute concentrations.

Research paper thumbnail of A Comparison of Runoff Pathways and Nutrient Export in Small Tropical Forest Catchments

The Center for Tropical Forest Research (CTFS), a program of the Smithsonian Tropical Research In... more The Center for Tropical Forest Research (CTFS), a program of the Smithsonian Tropical Research Institute (STRI), has coordinated a global network of 17 tropical forest dynamics plots of approximately 50 hectares in order to collect baseline information and to monitor forest changes. Missing from most past studies of these plots is an integrated soil hydrology and water chemistry component. To

Research paper thumbnail of Classifying connectivity to guide aquatic habitat management in an arctic coastal plain watershed experiencing land use and climate change

Arctic, Antarctic, and Alpine Research, 2020

Research paper thumbnail of Assessing Student Learning in Field Courses Using Oral Exams

The Geography Teacher, 2020

Research paper thumbnail of Nurtured on Wikipedia, Can an Honor Code Foster Better Student Writers?

New Directions for Community Colleges, 2018

Research paper thumbnail of What We Know about Water: A Water Literacy Review

Water, 2020

Water literacy, or the culmination of water-related knowledge, attitudes and behaviors, is a rela... more Water literacy, or the culmination of water-related knowledge, attitudes and behaviors, is a relatively new field of study with growing importance for sustainable water management and social water equity. However, its definition and use across existing literature are varied and often inconsistent. This paper seeks to synthesize and streamline the conception of water literacy. We conducted a systematic review of literature that defines or describes in detail either “water literacy” or “watershed literacy”. From this, we suggest a new holistic framework for water literacy to guide a more inclusive, relevant use of the concept. We utilized the framework to examine existing surveys and studies of water knowledge, attitudes and behaviors in both student and adult populations, and summarized water literacy levels and knowledge gaps that exist around the world. To address knowledge gaps, we suggest using a suite of approaches drawn from the published literature, including enhanced visuals,...

Research paper thumbnail of ALPINE AREAS IN THE COLORADO FRONT RANGE AS MONITORS OF CLIMATE CHANGE AND ECOSYSTEM RESPONSE

Research paper thumbnail of Integrating Watershed Management with Learning: The Role of Information Transfer in Linking Educators and Students with Community Watershed Partners

Comparative Technology Transfer and Society, 2006

... 2001, p. 2) by combining community service with learning as a reflectional and relation-al pe... more ... 2001, p. 2) by combining community service with learning as a reflectional and relation-al pedagogy (Heffernan, 2001; Younos et al ... or faculty researchers (eg, LaSage, Jones, & Edwards, 2006; Sherwin & Tamminga, 2001; Tedesco & Salazar, 2006; Walker, You-nos, & Raflo ...