This page includes all seminars, from Spring 2009 to the present
|Date||Presenter||Presentation Title and Description|
|26-Mar-09||Cary Troy||Monitoring and Modeling of Circulation in Lakes|
|Laura Esman||The Indiana Water Monitoring Inventory: A tool for locating water monitoring information in Indiana|
|14-May-09||Reuben Goforth||Ecology and Evolution of An Aquatic Ecologist - Take a Swim on the Wild Side|
|Keith Cherkauer||Water Availability in a Changing Environment|
|11-Jun-09||Chip Blatchley||What's in the Pool? Swimming Pool Chemistry and Human Health Implications
Reactions between free chlorine and human-introduced chemicals in swimming pools lead to formation of a wide range of disinfection by-products (DBPs). Opportunities for human exposure to swimming pool DBPs are extensive, and several adverse human health effects are known or suspected to be linked to these compounds. Included in this presentation will be a discussion of the nature of the DBPs that are common to pools, representative DBP concentrations, the analytical methods used for swimming pool water characterization, and the need to develop a general-use analytical facility for the water community.
|Eileen Kladivko||Agricultural Drainage and Soil and Water Quality
Agricultural drainage provides many benefits for water quality but also presents some challenges. I'll discuss research on reducing chemical loads to drains and improving soil quality, and will ask some questions about scaling up to optimize practices on a watershed basis.
|25-Jun-09||Dennis Lyn||A Simple Case of Scour? Scour is a fundamental sediment transport phenomenon with implications in hydraulic engineering, fluvial geomorphology, and possibly even the study of aquatic habitat. We consider an idealized case of scour that is primarily two-dimensional, and discuss experimental results that raises interesting questions regarding the nature of equilibrium scour, the mechanisms, and the time scales involved.|
|Chad Jafvert||Environmental Fate and Transport of Chemicals: Fullerene Photochemistry, PAHs in River Sediments, and Nutrients in Agricultural Ditches
To study these old and new environmental issues, we must take advantage of old and new tools to discover dominate environmental processes.
|9-Jul-09||Bryan Pijanowski||Backcasting and Forecasting Land Use-Hydrologic Interactions: Importance of Legacies, Temporal Profiles and Planning Scenarios for Watershed Management - Humans have altered landscapes through land use change significantly over the last century. These changes have had perverse impacts on the hydrologic cycle and water biogeochemistry. Through the use of backcasting and forecasting land change models, I illustrate several important reasons how past land uses impact current land use planning considerations. The concepts of land use legacies, temporal profiles and chronologies, and future ecological-economic planning scenarios will be briefly summarized in this presentation.|
|Laura Bowling||Lakes and wetlands in arctic environments - Lakes and wetlands are prevalent in Arctic environments, due to a history of glaciations and the presence of permafrost. This surface storage provides a poorly quantified control on the discharge into the Arctic Ocean. In addition, interactions between the soil thermal and moisture regimes lead to disparate observations of changes in lake and wetland extent in the face of recent climatic warming at high latitudes. I will describe on-going model development aimed at helping to improve our understanding of this sensitive region.|
|23-Jul-09||Inez Hua||A chicken-and-egg conundrum: Energy or water? - Producing energy demands water, and water treatment and distribution consume energy. How can this interdependency be quantified, and could it be used to diminish overall environmental impacts of utilities?
|Tomas Hook||Scaling-up to the population level: Linking empirical and modeling studies of fish - A wide range of studies demonstrate how fish respond individually (and molecularly) to a seemingly infinite suite of physical/chemical/biological factors. However, since fish stocks are generally managed at the population or community level, there is a need to scale up such lower level understanding to population-level consequences. I will present some examples of inter-disciplinary studies whereby we have integrated field/laboratory approaches with modeling analyses to explore population and food-web processes.|
|6-Aug-09||Linda Prokopy||Social Dimensions of Watershed Management - In this talk, I will present an overview of a regional framework for measuring social indicators. I will discuss how this framework can help improve watershed planning and implementation.|
|Rabi Mohtar||Pedostructure: Prospects for Multi-Scale Hydrologic Modeling - A fundamental problem confronting the hydrologic systems is the lack of interdisciplinary linkages to the Pedology of these systems that controls the hydrologic processes. Soil structure contains a hierarchy of organization at several different scales that also varies spatially, to constitute what is known as the soil cover. Based on methodology involving soil mapping, characterization and modeling approaches this research explores the application of systems theory to pedology and soil physics; and characterization and modeling of the hydrostructural soil organization to provide a platform for connecting the hydrologic scales.|
|20-Aug-09||Larry Nies||Water Infrastructure Systems: Changing the Paradigm in Indiana - Recent reports from the National Research Council and the National Academy of Engineering both list water infrastructure systems as critical challenges to be addressed in the future. Managing future water resources and developing sustainable solutions for water infrastructure problems will require new approaches. The Purdue Water Community can and should have a leadership role in setting a new direction that will have great environmental and economic impact. Future water infrastructure challenges present the Purdue Water Community with opportunities around which research themes and identity can emerge. Many of the barriers to implementing alternative water management strategies are not technical limitations but rather "business as usual is easier" economic, social, regulatory and political attitudes. The NRC asserts that using "the same processes, practices, technologies, and materials that were developed in the 20th century and will likely yield the same results" which are underperforming, short lived, more expensive systems that are more vulnerable to failure. Some examples of problems that have been solved with traditional methods will be discussed, as well as alternative solutions that could have been considered.|
|Jane Frankenberger||Improving Water Quality in Drained Agricultural Watersheds: What Has the Most Impact? Our understanding of nutrient loading from drained agricultural land continues to increase, but nutrient loads in Indiana's streams are not generally decreasing, despite millions of dollars spent on conservation practices. I do not propose to answer the question posed in the title of this seminar, but will present watershed modeling, monitoring, and education activities I am involved in that might contribute towards solutions, and hopefully generate lively discussion about future directions.|
|2-Sep-09||John Bickham||Biodiversity and Environmental Studies of Aquatic Vertebrates and Water-Related Initiatives in the Center for the Environment - I'll talk about my use of aquatic vertebrates in ecotoxicology studies in Azerbaijan, population genetic studies of Steller sea lions and bowhead whales, and ongoing C4E initiatives that might relate to the water community.|
|John Lee||Water, Wildlife, and Development: Panama Under Transition - I plan to talk about water resource issues relative to economic development and the canal expansion project. I'll also talk about wildlife rescue efforts in the canal zone plus plans to develop an eco-tourism industry.|
|16-Sep-09||Gabe Bowen||Water isotopes: Research and opportunities at Purdue - I will briefly introduce a range of ways that the water isotopes (2H/1H and 18O/16O) are being used in the Isotope Ratio Hydrology and Ecology group and collaborative projects at Purdue. These include studies to trace fluxes of water between the land surface and atmosphere, natural fluxes and human diversion of water across the land surface, reconstruction of paleoclimate from sedimentary archives preserving water isotope proxy records, and ecological studies involving assimilation of water isotope signatures by plants and animals. I will describe existing analytical capabilities and future development goals of the Purdue Stable Isotope Recharge Center (PSIRC), an open resource for the campus research community.|
|30-Sep-09||Marisol Sepulveda||Hormones and Hormone-mimics in the Environment: The New Generation of Gender-Bender Fish and Wildlife - Hormones play complex roles in living organisms, stimulating and inhibiting various cellular functions. Over the past decade, scientists have discovered several dozen environmental pollutants that can act as hormones and thus are capable of disrupting normal development. I will present work on estrogen and androgen mimics and how exposure to minute concentrations of these compounds can lead to changes in sexual development and reproductive output.|
|Otto Doering||Water Research Results for Policy Makers Otto Doering will talk about his involvement in national assessments related to water quality and the trials and tribulations of such efforts.|
|14-Oct-09||Venkatesh Merwade||Flood Modeling and Mapping: History and Research Opportunities - In this brief talk, I will discuss the state-of-the-art related to flood modeling and mapping at the national level, and describe some of our recent work related to this topic.|
|Leighanne Hahn||Pesticides and Water Quality: Products of Past andmPresent Regulatory Paradigms and Collaborative Opportunities|
|28-Oct-09||Phillip Owens||Quantifying soil-landscape relationships to create functional maps - The soil heterogeneity has been represented by soil series with broad ranges of soil property values between and within map units with no representation of the continuum of soil property values. Currently with high quality DEM's, Online Soil Survey (SSURGO), geographical information systems (GIS) and powerful geo-referencing tools, the specific geo-referenced spatial location can be used to understand soils. Additionally, recent advances in terrain-based digital soil mapping allow us to take a new approach of mapping soils based on their functional similarities rather than the taxonomic heterogeneities. Discrete soil property values associated with each soil polygon are weighted by their "influence" based on their fuzzy membership values to generate continuous functional soil property maps rather than discrete taxonomic soil map units. This presentation will provide examples of methods used to create functional maps and examples that apply to watershed research.|
|Darrell Schulze||Visualizing Soil Landscapes - Many of the concepts that soil science students must master are inherently spatial. Although we implicitly acknowledge the existence of spatial patterns in our courses, our ability to explicitly make these spatial patterns clear to our students has been limited. I will describe how we are teaching students complex soil geomorphological concepts in the field using geographic information system (GIS) software running on rugged tablet PCs equipped with GPS receivers. For the classroom, we are developing a web-based application based on Google Earth. We use a high resolution, 5 meter Digital Elevation Model (DEM) of the state as our base map, and then overlay various thematic maps derived from the detailed, second order soil survey. Soil parent material, soil drainage class, loess depth, and many other features can be displayed at resolutions from 1:3,000,000 to 1:2,000. Although our focus has been on teaching and learning, the data sets we have developed and the issues we have encountered have broader applicatons to the water community at Purdue.|
|2-Dec-09||Robin Ridgway/Barb Mansfield||Purdue's Sustainable Storm Water Master Plan - This presentation will actually be given by Barb Mansfield, the project manager, but Robin will attend if there are additional questions about the program.|
|James Garrison||Remote Sensing of Soil Moisture using Global Navigation Satellite System (GNSS) Signals - James Garrison will review current work in this area conducted by others and some ideas for future research.|
|28-Jan-10||Rabi Mohtar - Suresh Rao, Philip Owens, Linda Prokopy, Brad Joern, Bryan Pijanowski||Crossing Scales. Each one of us will share 2 slides about a perspective and the rest of the time will be dedicated to discussions. We may need 1.5 hrs for this.|
|11-Feb-10||Larry Theller||talk about the new streaming GIS data available through the EPA Geospatial Data Access Project, discuss what software is needed for access to these kind of data, then discuss the particular data streams available.|
|Community Meeting||Discussions led by Infrastructure, Communications/Web, Strategic Thinking, Course coordination & Student involvement Teams|
|Community Meeting||Discussions led by Global Initiatives, Data Coordination, and Washington Projects|
|11-Mar-10||Lenore Tedesco, IUPUI|
|25-Mar-10||Angelica Duran||A Liberal Arts approach to Gitche Gumee, aka the Great Lakes.|
|8-Apr-10||Brian Miller, Director IL-IN Sea Grant||An Overview of Illinois-Indiana Sea Grant (IISG) and how IISG can work together with the Purdue Water Community|
Using watershed models to evaluate impact of land management on water quality I will discuss how we are combining field data collection with simulation modeling to evaluate the impacts of various land management and land use changes on ecohydrology and water quality. Specifically, impacts of land use changes related to biofeedstock production and recent developments in optimization techniques to minimize the potential negative impacts will be discussed.
|6-May-10||Community Meeting||Tributary Reports|
|22-June-10||Water Safety||Marisol Sepulveda led discussion regarding policies surrounding chemical production and use, their toxicological impacts on water, and a paper by Schwarzman and Wilson calling for changes in regulation.|
About the Purdue Water Community
The Purdue Water Community facilitates water-related research, teaching, and engagement to improve and sustain human and ecosystem health. Everyone in the Purdue community who works on water-related research or education is welcome to participate by joining the Water Community.
Inland Lakes Project
This project focuses on research efforts to improve the ability of managers and stakeholders to anticipate how potential management decisions and natural dynamics influence physical, chemical and biological characteristics of lakes.
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Purdue Water Community
Gerald D. and Edna E. Mann Hall
203 S. Martin Jischke Drive, Suite 105
West Lafayette, IN 47907
- Phone:(765) 494-5146