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SUMMARY:Freshwater Colloquium: The Vadose Zone or the Twilight Zone? Tales of Uranium and Road Salt Travels Below Ground but Above the Water Table
DESCRIPTION:The School of Freshwater Sciences’ Freshwater Colloquium creates a platform for students\, faculty and scientists to discuss their research and emergent issues related to freshwater resources. Presentations are open to the public. \nAll events will take place on Mondays from 3:30-4:20 p.m. in-person in the GLRF Ballroom. \nThe School of Freshwater Sciences Great Lakes Research Facility\, is located at 600 E. Greenfield Ave. \nFull schedule \nField data from an experimental river flooding event at a former uranium mill tailings site will be presented to show that the vadose zone can be a major source and sink for contaminant transport down into and up out of the water table. Lab data from experimental road salt wicking and flushing tests will show how pore structure\, grain size\, and evaporation conditions control contaminant transport in the vadose zone. A brief introduction will also be given on the strange physics of the vadose zone and the non-linear mathematics that describe groundwater flow and solute transport therein.  \nDr. Paradis is a physical hydrogeologist with expertise in field tracer studies to better understand the sources and pathways of contaminants to and from groundwater. He is an Associate Professor at the University of Wisconsin at Milwaukee in the Department of Geosciences where he teaches physical hydrogeology\, field methods in hydrogeology\, and groundwater modeling. \n 
URL:https://uwm.edu/freshwater/event/freshwater-colloquium-charles-paradis/
LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204
CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events
ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2024/09/charting-new-waters.jpg
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DTSTART;TZID=America/Chicago:20261019T153000
DTEND;TZID=America/Chicago:20261019T162000
DTSTAMP:20261005T202149Z
CREATED:20261005T201722Z
LAST-MODIFIED:20261005T202149Z
UID:10000191-1792423800-1792426800@uwm.edu
SUMMARY:Freshwater Colloquium: Assessing the Basis for Heritable Phenotypic Variation in Lake Charr Ecomorphs of Lake Superior
DESCRIPTION:The School of Freshwater Sciences’ Freshwater Colloquium creates a platform for students\, faculty and scientists to discuss their research and emergent issues related to freshwater resources. Presentations are open to the public. \nAll events will take place on Mondays from 3:30-4:20 p.m. in-person in the GLRF Ballroom. \nThe School of Freshwater Sciences Great Lakes Research Facility\, is located at 600 E. Greenfield Ave. \nFull schedule \nResource polymorphisms are common among charr (Salvelinus) ecomorphs. In North America\, there are lake charr (Salvelinus namaycush) ecomorphs exhibiting variations in morphology\, physiology and behavior. Many of these occur in deep lake ecosystems (e.g.\, Lake Superior\, Great Bear and Slave Lakes) where depth provides a variety of habitats varying in temperature\, pressure\, and forage composition. Which phenotypic variations are heritable or result from environmental plasticity is a fundamental question for understanding the sympatric evolution of these ecomorphs and may have profound impacts on their resiliency to habitat change in the future. In Lake Superior\, there have been four reported ecomorphs; leans\, siscowets\, redfins and humpers. However\, based on observations particularly in complex bathymetric habitats (e.g.\, Isle Royale\, Stannard Rock\, Klondike Reef)\, there are certainly more ecomorphs that have yet to be described. So far\, ecomorphs (particularly leans and siscowets) can be differentiated based on morphometry\, growth\, habitat\, incidence of skip spawning\, pyloric caeca\, and to a lesser extent diet. They also exhibit physiological differences in the amount of lipid and glycogen stored in the muscle and liver as well as in the effects of lamprey wounding. This talk will synthesize efforts that have been made to delineate which of these phenotypes have a genetic basis and to what extent. It relies heavily on the results of a 15-year\, multi-generational common garden rearing experiment of lean and siscowet lake charr. Rick Goetz is currently a Professor Emeritus in the School of Freshwater Sciences at the University of Wisconsin-Milwaukee and an Affiliate Professor in the School of Aquatic and Fishery Sciences at the University of Washington. From 2011-2021 he was a research physiologist heading the Program on Aquaculture and Marine Fish and Shellfish Biology at the Manchester Research Station (Seattle-NOAA Northwest Fisheries Science Center)\, studying biological questions pivotal to the sustainability of natural marine fish and shellfish populations as well as the artificial propagation of marine fish for aquaculture. Prior to coming to Seattle\, he was a Professor in the School of Freshwater Sciences at the University of Wisconsin-Milwaukee (2004-2011)\, Director of the Program on Scientific Aquaculture at the Marine Biological Lab in Woods Hole\, Massachusetts (2000-2004)\, and a Professor in the Department of Biological Sciences at the University of Notre Dame (1977-2000). In the past he has conducted research on reproduction\, growth and innate immunity in fish and for the past two decades has been investigating the basis of phenotypic differentiation and speciation in lake trout.
URL:https://uwm.edu/freshwater/event/freshwater-colloquium-rick-goetz/
LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204
CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events
ATTACH;FMTTYPE=image/jpeg:https://uwm.edu/freshwater/wp-content/uploads/sites/595/2024/09/charting-new-waters.jpg
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DTSTART;TZID=America/Chicago:20261026T153000
DTEND;TZID=America/Chicago:20261026T162000
DTSTAMP:20261005T202802Z
CREATED:20261005T202634Z
LAST-MODIFIED:20261005T202802Z
UID:10000192-1793028600-1793031600@uwm.edu
SUMMARY:Freshwater Colloquium - Propositions for the next phase of the New Emscher's evolution: Using speculative design to probe an uncanny watershed
DESCRIPTION:The School of Freshwater Sciences’ Freshwater Colloquium creates a platform for students\, faculty and scientists to discuss their research and emergent issues related to freshwater resources. Presentations are open to the public. \nAll events will take place on Mondays from 3:30-4:20 p.m. in-person in the GLRF Ballroom. \nThe School of Freshwater Sciences Great Lakes Research Facility\, is located at 600 E. Greenfield Ave. \nFull schedule \nFor over 100 years\, the Emscher River was the open sewer of the Ruhr\, the center of Germany’s coal-mining and steel-production capacity. Mining related land subsidence of made the ground too unstable for the creation of a conventional sewer system\, and frequent flooding in the region necessitated that the sluggish river be channelized.  \nThe Ruhr Valley is twice the size of the Milwaukee River watershed. With a population of over 5 million spread between twelve mid-sized cities\, it is the largest and most densely settled urban agglomeration in Germany. Roughly half of that population lives within the Emscher River watershed\, which is roughly twice the size of the Menomonee River watershed. Like the Menomonee and Kinnickinnic\, the dominant character of the Emscher is industrial.  \nMuch like here\, the region de-industrialized starting in the 1970’s. In 1988\, the government of North Rhine-Westphalia initiated the Internationale Bauausstellung (IBA) Emscher Park\, a ten-year plan to focus investment on the ecological restoration and economic reinvention of the region. Starting in 1990\, the Emschergenossenschaft (EGLV)\, the regional water authority\, began the 30-year\, 5.3 billion Euro construction of a modern sewer system and the restoration of the Emscher river.  \nThat project\, the largest river restoration project in Europe\, is now complete\, and the EGLV is seeking to map out the next phase of transformations that will adapt the Ruhr to the challenges of the 21st C.  \nWith my own water-centric research focusing on our own Inner Harbor\, Milwaukee\, and the post-industrial waterfronts of the Great Lakes Basin\, I have long been fascinated with the ecological and cultural project of the New Emscher. This last spring I spent three weeks in Essen as a guest of the EGLV. Where in the past I have sought inspiration from individual projects\, this time my aim was to understand the newly reconstructed river and its watershed as a whole. My ongoing goal is to be to provide the EGLV with a unique designer’s sensibility\, and to play a consulting role in the current visioning process.  \nThis talk will present design work that I undertook while visiting the EGLV\, with the goal of coming to understand the river through my own speculations. As a designer of ecological urban waterscapes\, I have a clear sense of the complexities of seeking to create a connection to nature in compromised environments. I am philosophically committed to the idea of ‘reading the land’ through the ways that water flows; of teaching ecological literacy through design starting with watershed awareness. The polderized landscape of the Emscher has confounded me. I find the river and it’s tributary landscape completely uncanny. It is that uncanny nature that my work explores and that this talk will seek to work through. \nJames Wasley is a Professor in the UWM Architecture Department and is a Director of the Institute for Ecological Design. He is also an Affiliate Professor at the UWM School of Freshwater Sciences. His research focuses on designing and implementing ecological urban waterscapes. Grounded in the Great Lakes\, this research has recently expanded to include a comparative focus on the restoration of the Emscher River in the Ruhr region of Germany and on green/blue infrastructure in German urban design. \nProfessor Wasley was a Water Policy Scholar at the SFS Center for Water Policy in 2017 and again in 2024. In the spring of 2023 he was a Visiting Professor at the Technical University of Dortmund\, DE. Also in 2024 he participated in the inaugural class of the Association of Collegiate Schools of Architecture Academy for Public Scholarship on the Built Environment: CLIMATE ACTION.
URL:https://uwm.edu/freshwater/event/freshwater-colloquium-james-wasley/
LOCATION:School of Freshwater Sciences Ballroom\, First Floor\, 600 E Greenfield Avenue\, Milwaukee\, WI\, 53204
CATEGORIES:Alumni & Community,Faculty and Staff,Public,Students,UWM Campus Events
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