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Catchment Science: Interactions of Hydrology, Biology & Geochemistry
Gordon Research Conference

Thresholds in Time and Space

Dates

June 14-19, 2015

Location

Proctor Academy
Andover, NH

Organizers

Chairs:
Kathleen C. Weathers & Jan Seibert

Vice Chair:
Kevin J. McGuire

Meeting Description

Observing, predicting, and understanding the consequences and feedbacks of environmental thresholds are crucial for predicting future changes in catchment systems across interacting hydrological, biological and geochemical processes. This GRC will focus on new research, including thresholds, early warning indicators, and resilience using long-term data, experimental studies, theory, and modeling approaches to study the behavior of catchments systems under changing conditions such as climate variability or land use/cover changes.

Related Meeting

This GRC was held in conjunction with the "Catchment Science: Interactions of Hydrology, Biology & Geochemistry" Gordon Research Seminar (GRS). Refer to the associated GRS program page for more information.

Contributors

Final Meeting Program

Sunday
2:00 pm - 9:00 pmArrival and Check-in
6:00 pmDinner
7:30 pm - 7:40 pmWelcome / Introductory Comments by GRC Site Staff
7:40 pm - 9:30 pmThresholds in Time and Space: Exploring at the Big Picture
Discussion Leaders: John Stoddard (U.S. Environmental Protection Agency, USA) and Holly Barnard (University of Colorado, USA)
7:40 pm - 7:55 pmIntroduction by Discussion Leader
7:55 pm - 8:25 pmIrena Creed (University of Western Ontario, Canada)
"How Catchment Science Can Be Used to Predict (apparently) Random Toxic Cyanobacteria Blooms"
8:25 pm - 8:40 pmDiscussion
8:40 pm - 9:30 pmGeneral Discussion
Monday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmConceptual Frameworks: Are Thresholds and Resilience Useful Frameworks for Understanding Catchment Behavior?
Discussion Leaders: Patricia Soranno (Michigan State University, USA) and Daniele Penna (Free University of Bozen-Bolzano, Italy)
9:00 am - 9:30 amKathryn Cottingham (Dartmouth College, USA)
"Environmental Thresholds: Ecological Concepts, Models and Case Studies"
9:30 am - 9:45 amDiscussion
9:45 am - 10:15 amBrian McGlynn (Duke University, USA)
"Moving from Field Observations of Hydrologic Connectivity to Modeling Conceptualizations"
10:15 am - 10:30 amDiscussion
10:30 am - 11:00 amCoffee Break
11:00 am - 11:30 amTim Peterson (The University of Melbourne, Australia)
"Catchments at the Water Divide - Identification of Multiple Hydrological Steady States"
11:30 am - 11:45 amDiscussion
11:45 am - 12:15 pmRichard Pouyat (U.S. Department of Agriculture, Forest Service, USA)
"Thresholds and Policy: A Perfect Match?"
12:15 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmDynamical Thresholds in Water Quality
Discussion Leaders: Patricia Soranno (Michigan State University, USA) and Daniele Penna (Free University of Bozen-Bolzano, Italy)
7:30 pm - 8:00 pmJames Kirchner (ETH Zurich, Switzerland)
"Water Quality Dynamics from Hours to Decades, and H+ to U"
8:00 pm - 8:15 pmDiscussion
8:15 pm - 8:35 pmWim Clymans (Lund University, Sweden)
"The Biogeochemistry of Silicon at Hubbard Brook Experimental Forest"
8:35 pm - 8:45 pmDiscussion
8:45 pm - 9:30 pmGeneral Discussion
Tuesday
7:30 am - 8:30 amBreakfast
8:30 amGroup Photo
9:00 am - 12:30 pmObservations: What's To Be Learned from Catchment Experiments and Models?
Discussion Leaders: Gary Lovett (Cary Institute of Ecosystem Studies, USA) and Ilja van Meerveld (University of Zurich, Switzerland)
9:00 am - 9:30 amChristine Alewell (University of Basel, Switzerland)
"Source Sediments Tracking from Soils to Oceans: Linking Biogeochemical Concepts of Isotope Geochemistry with Geophysical Data"
9:30 am - 9:45 amDiscussion
9:45 am - 10:15 amLouise Bracken (Durham University, United Kingdom)
"Water Connections - Hydrological Connectivity at the Catchment Scale"
10:15 am - 10:30 amDiscussion
10:30 am - 11:00 amCoffee Break
11:00 am - 11:30 amRita Adrian (Leibniz Institute of Freshwater Ecology and Inland Fisheries, Germany)
"Knowledge Derived from Data Driven Lake Case Studies"
11:30 am - 11:45 amDiscussion
11:45 am - 12:30 pmGeneral Discussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmWhere Observations Fall Short
Discussion Leaders: Gary Lovett (Cary Institute of Ecosystem Studies, USA) and Ilja van Meerveld (University of Zurich, Switzerland)
7:30 pm - 7:50 pmMatthew Ross (Duke University, USA)
"When Everything Changes: Catchment Scale Biogeochemical Impacts of Mountaintop Mining"
7:50 pm - 8:00 pmDiscussion
8:00 pm - 8:30 pmEmily Stanley (University of Wisconsin, USA)
"Finding Steps in Time and Space for Diverse Hydrologic Landscapes"
8:30 pm - 8:45 pmDiscussion
8:45 pm - 9:30 pmGeneral Discussion
Wednesday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmPredicting Thresholds Under the Wings of Change
Discussion Leaders: Stacey Archfield (U.S. Geological Survey, USA) and Vazken Andreassian (Irstea, France)
9:00 am - 9:30 amGenevieve Ali (University of Manitoba, Canada)
"Tackling Natural and Human-Driven Variability in Hydrological Dynamics: Can Thresholds Really Help?"
9:30 am - 9:45 amDiscussion
9:45 am - 10:15 amYpe van der Velde (Wageningen University, The Netherlands)
"Wetlands, Forests, and Rivers: How Structured Landscapes Form Through Hydrological Feedbacks"
10:15 am - 10:30 amDiscussion
10:30 am - 11:00 amCoffee Break
11:00 am - 11:30 amHilary McMillan (National Institute of Water and Atmospheric Research, New Zealand)
"Hydrological Signatures: Use and Abuse"
11:30 am - 11:45 amDiscussion
11:45 am - 12:15 pmStefan Gerber (University of Florida, USA)
"Nitrogen Retention and Limitation: Application of Global Land Models at the Watershed Scale"
12:15 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:00 pm - 7:30 pmBusiness Meeting
Nominations for the Next Vice Chair; Fill in Conference Evaluation Forms; Discuss Future Site and Scheduling Preferences; Election of the Next Vice Chair
7:30 pm - 9:30 pmIs It Possible to Predict Surprises?
Discussion Leaders: Stacey Archfield (U.S. Geological Survey, USA) and Vazken Andreassian (Irstea, France)
7:30 pm - 7:50 pmMargaret Zimmer (Duke University, USA)
"Flowpath and Stream Network Activation Threshold Influences on Piedmont Runoff Generation and Biogeochemistry"
7:50 pm - 8:00 pmDiscussion
8:00 pm - 8:30 pmMichael Pace (University of Virginia, USA)
"Lake Experiments to Test for Early Warnings of Regime Shift"
8:30 pm - 8:45 pmDiscussion
8:45 pm - 9:30 pmGeneral Discussion
Thursday
7:30 am - 8:30 amBreakfast
9:00 am - 12:30 pmFrom Vertical to Horizontal Frontiers: Exploring Resilience and Elasticity in Catchments
Discussion Leaders: Tom Harmon (University of California, Merced, USA) and Elizabeth Boyer (Pennsylvania State University, USA)
9:00 am - 9:30 amJan Fleckenstein (Helmholtz Centre for Environmental Research - UFZ, Germany)
"Surface and Subsurface Waters: Identifying Interactions and Their Importance for Catchment Solute Dynamics"
9:30 am - 9:45 amDiscussion
9:45 am - 10:15 amAlberto Montanari (University of Bologna, Italy)
"New Data for Deciphering the Human Pressure on River Ecosystems: A Step Forward to Assess Global Water Emergency"
10:15 am - 10:30 amDiscussion
10:30 am - 11:00 amCoffee Break
11:00 am - 11:30 amStephen Sebestyen (U.S. Department of Agriculture, Forest Service, USA)
"Learning About Thresholds and Change from Small Catchment Studies: Some New Tricks for an Old Dog"
11:30 am - 11:45 amDiscussion
11:45 am - 12:15 pmBeverley Wemple (University of Vermont, USA)
"Understanding the Role of Rural Transportation Networks on Runoff Production and Erosion: Implications for Adaptive Design and Community Resilience"
12:15 pm - 12:30 pmDiscussion
12:30 pmLunch
1:30 pm - 4:00 pmFree Time
4:00 pm - 6:00 pmPoster Session
6:00 pmDinner
7:30 pm - 9:30 pmFrontiers in Time and Space: Practical Applications of Thresholds
Discussion Leaders: Tom Harmon (University of California, Merced, USA) and Elizabeth Boyer (Pennsylvania State University, USA)
7:30 pm - 7:50 pmGabrielle Boisrame (University of California, Berkeley, USA)
"Seeing the Forest Without the Trees: Long-Term Influence of Wildfire on the Ecohydrology of a Mountain Watershed"
7:50 pm - 8:00 pmDiscussion
8:00 pm - 8:30 pmJennifer Tank (University of Notre Dame, USA)
"Can Changes in Land Cover and Floodplain Connection Alter Nutrient Export from Agricultural Watersheds?"
8:30 pm - 8:45 pmDiscussion
8:45 pm - 9:30 pmGeneral Discussion
Friday
7:30 am - 8:30 amBreakfast
9:00 amDeparture
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