Program

12:00 pm - 8:00 pm

Registration

(Reception Hall/Fitness Center)

After 3:00 pm

Point Lookout housing Check-in

(Reception Hall/Fitness Center)

7:00 pm - 9:00 pm

Welcome Reception

Heavy hors d'oeuvres, beverages, and classical music entertainment featuring

The Trio Camerata. Liz Downing, Flute; Louie Hall, oboe; and Ginger Hwalek, piano

 (Compass Room, The Summit)

7:30 am - noon

Registration

(Erickson Hall foyer)

7:30 am - 8:45 am

 Breakfast

(The Pavilion)

8:45 am - 9:20 am

Opening Ceremony

Comments and welcome from the Organizing Committees

Welcome from the President of the University of Maine, Dr.  Paul Ferguson

(Erickson Hall)

9:20 am - 10:00 am

Plenary - 1

Paul Mayewski, University of Maine, Climate Change Institute, USA

"Our changing physical and chemical climate - the ice record"

(Erickson Hall)

10:00 am - 10:20 am

Refreshment Break

(The lobby and veranda of Erickson Hall)

Theme 1

Long-term integrated monitoring and modeling

Chairs: Jakub Hruska and

Filip Moldan

(Erickson Hall - A)

Theme 4

Linkages among biogeochemical cycles

Chairs: Christine Goodale and

Filip Oulehle

(Erickson Hall - B)

Theme 10

Trace element biogeochemistry and ecosystem impact

Chairs: James Kaste and

 Tomas Navratil

(Erickson Hall - C)

Theme 12

Bio-energy production impacts in forested systems

Chairs: Michael Starr and

Liisa Ukonmaanaho

(Education Center)

10:20 am - 10:50 am

Theme 1 Plenary

Stephen Norton

The Bear Brook Watershed in Maine (BBWM): 25 years of monitoring, manipulation, and modeling

Theme 4 Plenary

Leon P. M. Lamers

Microbial transformations of nitrogen, sulfur, and iron dictate vegetation composition in wetlands: an overview

Theme 10 Plenary

Ulf Skyllberg

Biogeochemistry of mercury in wetlands with emphasis on methylation and demethylation processes

Theme 12 Plenary

Bengt Olsson

Bio-energy production impacts in forested systems: an overview

10:50 am - 11:10 am

1-1. Lepisto, Ahti: Increasing organic C and N fluxes from a northern Finnish river basin - monitoring and modeling suggest climate- related controls

4-1. Dise, Nancy: Acid rain and wetland methane emission:  brake or accelerator ?

 10-1. *Braaten, Hans F.V.: Distribution of total and methylmercury under spatial variation in surface water of Norwegian lakes

12-1. *Johnson, James: Seeing the wood for the trees: nutrient sustainability of Irish forests under increased biomass harvesting

11:10 am - 11:30 am

1-2. *Zanchi, Giuliana: The biogechemistry in Swedish forests: evaluation of carbon, nitrogen, base cations, and water processes

4-2. Arvola, Lauri: OrgC, N, and P retention in a deep boreal lake (Paajarvi, Finland)

10-2. Amirbahman, Aria: Kinetics of abiotic mercury(II) reduction by iron(II)

12-2. Ukonmaanaho, Liisa: Impact of whole-tree harvesting on water quality from drained peatland forests in Finland

11:30 am - 11:50 am

1-3. Valinia, Salar: Does modelling of acidification correspond to a century of biological observations? Comparing the MAGIC model and presence of roach

4-3. Olsen, Amanda: Influences of dissolved organic carbon, iron, and aluminum photochemistry on phosphorus cycling in surface waters

10-3. *Massey, Delia: Assessment of mercury bioavailability in sediment using diffusive gradients in thin films (DGT)

12-6. Sakalli, Abdulla: Towards the modelling and use of dynamic growing season in a chemical transport model

11:50 am - 12:10 pm

1-4. Cosby, Bernard: Rising temperatures threaten Brook trout in streams in VA, USA

4-4. SanClements, Michael: The effects of acidification and recovery on DOM quality and source in temperate forested watersheds

10-4. Jacobson, George: Changing climate and sea level alter Hg mobility at Lake Tulane, Florida USA

12:10 pm - 1:15 pm

Lunch

(The Pavilion)

1:20 pm - 2:00 pm

Plenary 2

Daniel Engstrom, St. Croix Watershed Research Station, Minnesota, USA

"The paleolimnological record of long-term and recent chemical and physical environmental changes"

(Erickson Hall)

2:00 pm - 2:20pm

Break

Theme 1 (continued)

Long-term integrated monitoring and modeling

Chairs: Jakub Hruska and

 Filip Moldan

(Erickson Hall - A)

Theme 2

Biosphere-atmosphere interactions and exchanges: gases and aerosols

Chairs: Nancy Dise and

 Tobias Eriksson

(Erickson Hall - B)

Theme 5

Critical unknowns in nitrogen dynamics and reactive N

Chairs: Melanie Vile and

Leon P. M. Lamers

(Erickson Hall - C)

Theme 9

Experimental manipulations of ecosystems

Chairs: Lindsey Rustad and

 Jeff Dukes

(Education Center)

2:20 pm - 2:50 pm

Theme 2 Plenary

David Hollinger

Long-Term Forest-Atmosphere Interactions in

Central Maine, USA

Theme 5 Plenary

Benjamin Houlton

Global nitrogen (im)balance: New approaches to the 7th element

Theme 9 Plenary

Claus Beier

Impacts of climate change on terrestrial ecosystem feedback and carbon and nitrogen cycling - results from the CLIMAITE experiment

2:30 pm - 2:50 pm

1-5. Navratil, Tomas: Trends in Stream Water Chemistry within the GEOMON Network, Czech Republic

2:50 pm - 3:10 pm

1-6. Parn, Jaan: Rise of nutrient runoff following a re-intensification of land use and increased water discharge in a small rural catchment in Eastern Europe, 1987-2010

2-1. *Zhu, Jing: Atmogenic NH₄ derived from agriculture drives N₂O emissions in a N-saturated subtropical forest, southwest China

5-1. Raich, James: Carbon-driven recovery of nitrogen cycling in fast-growing tropical tree plantations

9-1. Ambus, Per: Soil respiration is stimulated by elevated CO₂ and reduced by summer drought: Results from three years of measurements in a multifactor ecosystem manipulation experiment in a temperate heathland (CLIMAITE)

3:10 pm - 3:30 pm

1-7. Kram, Pavel: Modeling of long-term water and soil changes in three geochemically contrasting monolithological Czech catchments

2-2. *Berger, Sina: The switch between N₂O source and sink function in monsoon-affected deciduous forest soils of South Korea is driven by soil moisture

5-2. Goodale, Christine: Isotopic signals in nitrate from precipitation and denitrification in a northern hardwood, forested, catchment

9-2. Kiese, Ralf: Impact of climate change on greenhouse gas exchange of (pre-) alpine grassland soils

3:30 pm - 3:50 pm

1-8. Pierret, Marie-Claire: Erosion and weathering fluxes in granitic basins: the example of the Strengbach catchment (Vosges massif, eastern France)

2-3. *Gerschlauer, Friederike: Greenhouse gas exchange linked with N cycling in tropical ecosystems at Mt. Kilimanjaro, Tanzania

5-3. Strahm, Brian: Reciprocal relationships in nitrate source-sink dynamics with soil depth in forested catchments of the southern Appalachians USA

9-3. Emmett, Bridget: Sensitivity of vegetation and soil processes to drought and warming, and the consequences for C sequestration in organic upland systems

3:50 pm - 4:10 pm

1-9. *McDonough, Andrew: Impacts of nitrogen deposition on herbaceous ground flora and epiphytic foliose lichen species in Southern Ontario hardwood forests

2-4. *Hansen, Raili: Carbon dioxide, methane, and nitrous oxide fluxes from soil under different humidity treatments in a young deciduous forest

5-4. *Choudhary, Sonal: Acute atmospheric nitrogen deposition in the high arctic tundra: fate and effects

9-4. Kreyling, Jurgen: Absence of snow-cover reduces understory plant cover and annual decomposition in boreal forests

4:10 pm - 4:30 pm

1-10. Perry, Hobie: Modeling sugar maple life and death across the broader landscape using FIA's phase-3 database

2-5. *Morrison, Eilidh: Comparison of reactive gas emissions from bioenergy and arable crops

5-5. Vile, Melanie: Unprecedented rates of biological N₂-fixation challenge dominant paradigm of nitrogen limitation in boreal bogs

9-5. Shibata, Hideaki: Impact of snowpack decrease on net nitrogen mineralization and nitrification of forest soil in northern Japan

4:30 pm - 6:30 pm

Poster Session 1

 (refreshments available)

(The veranda and lobby of Erickson Hall)

6:30 pm - 8:00 pm

Dinner and Informal Evening Discussions

(The Pavilion)

6:45 am - 8:00 am

 Breakfast

8:00 am - 8:15 am

Announcements

(Erickson Hall)

8:15 am - 8:55 am

Plenary 3

Jiri Kopacek, Institute of Hydrobiology, CZ

"The changing aquatic chemistry environment"

(Erickson Hall)

Theme 1 (continued)

Long-term integrated monitoring and modeling

Chairs: Jakub Hruska and

Filip Moldan

(Erickson Hall-A)

Theme 4 (continued)

Linkages among biogeochemical cycles

Chairs: Christine Goodale and

Filip Oulehle

(Erickson Hall-B)

Theme 6

Biogeochemistry of peatlands

Chairs: Kelman Wieder and

Lucy Sheppard

(Erickson Hall - C)

Theme 5 (continued)

Critical unknowns in nitrogen dynamics and reactive N

Chairs: Melanie Vile and

Leon P.M. Lamers

(Education Center)

9:10 am - 9:40 am

Theme 6 Plenary

Christian Fritz

Biogeochemistry: where peat and plants meet

9:00 am - 9:20 am

5-6. Sebestyen, Stephen: Identifying when, where, and why atmospheric nitrate is directly transported to streams in nitrogen polluted forests

9:20 am - 9:40 am

1-11. Froberg, Mats: Nitrogen and carbon concentrations in Swedish headwater streams in relation to forest status determined by the probabilistic classifier method

4-5. Oulehle, Filip: Major changes in forest carbon and nitrogen cycling caused by declining sulphur deposition

5-7. *Henry, Jason: Impacts of nitrogen deposition on plant species richness and soil acidification for Irish grasslands

9:40 am - 10:00 am

1-12. Ortiz, Carina: Importance of model complexity for capturing climate impacts on soil carbon - Comparison of four models with inventories

4-6. Lawrence, Gregory: Early recovery of soils from acidic deposition tied to carbon dynamics in U.S. spruce forests

6-1. Bragazza, Luca: Aboveground and belowground interactions in peatlands: the influence of climate warming and changes in plant cover on nutrient partitioning between soil microbes and plants

5-8. Porcal, Petr: Seasonal variation of photochemically induced changes in nitrogen speciation in stream water

10:00 am - 10:20 am

1-13. Oulehle, Filip: Modelling soil nitrogen: the MAGIC model with nitrogen retention linked to carbon turnover using decomposer dynamics

4-7. Jones, Timothy: Acidity controls on carbon and nitrogen cycling in organic soils: evidence from a 5 year field manipulation study

6-2. Sebestyen, Steve: Spruce-peatland responses under climatic and environmental change (SPRUCE Experiment): An in situ warming by CO₂ manipulation of a characteristic high-carbon ecosystem

5-9. Ross, Don: Disturbing problems with nitrification rate measurements in forest soils

10:20 am - 10:40 am

1-14. Austnes, Kari: In-situ high-frequency monitoring of dissolved organic matter (DOM) - a valuable tool for flux calculations, process understanding, and modeling?

4-8. *Tahovska, Karolina: Microbial N immobilization is of great importance in acidified and N-saturated mountain forest soils if carbon is available

6-3. *Giebels, Michael: CH₄-fluxes remain high after 7 years of peatland restoration - A worst case climate effect scenario

5-10. Rutting, Tobias: Effects of multiple-climate change factors on gross nitrogen dynamics in grassland soil

10:40 am - 11:00 am

Refreshments

(The veranda and lobby of Erickson Hall)

11:00 am - 11:20 am

1-15. Holmberg, Maria: A probabilistic assessment of the effects of climate change on DOC in boreal lakes

4-9. Pardo, Linda: Can we predict C and N cycling based on soil physical properties in a northern hardwood forest?

6-4. Jurasinski, Gerald: From brackish to fresh to brackish - almost four years of methane emission measurements in a coastal fen under change

5-11. Roelofs, Jan: The response of soft-water lakes to carbon fertilization is controlled by nitrogen

11:20 am - 11:40 am

1-16. *Frei, Sven: Hydrologically controlled generation of reactivity hot spots within a wetland with micro-topography: A modeling approach

4-10. Crowley, Katherine: Do nutrient limitation patterns shift from nitrogen toward phosphorus with increasing nitrogen deposition across the northeastern United States?

6-5. Bridgham, Scott: Controls over anaerobic carbon cycling and methane production in peatlands

5-12. Kopacek, Jiri: Anthropogenic nitrogen emissions during the Holocene and their possible effects on remote ecosystems

11:40 am - 12:00 pm

1-17. *Ledesma, Jose Luis: Base cations fluxes in a boreal catchment: Importance of the riparian zone

4-11. *Goll, Daniel: CO₂-induced nutrient limitation reduces global land carbon uptake in a model of combined carbon, nitrogen, and phosphorus cycling

6-6. Becker, Thomas: The use of high resolution aerial photography to estimate source area contributions to heterogeneous ecosystem fluxes

5-13.  Gardenas, Annemieke: Knowledge gaps in soil carbon and nitrogen interactions

12:00 pm - 1:00 pm

Lunch

(The Pavilion)

1:10 pm - 1:50 pm

Plenary 4

Filip Moldan, Swedish Environmental Research Institute

"Simulating history and the future"

(Erickson Hall)

Theme 3

The role of extreme events in ecosystem biogeochemistry

Chairs: Catherine Eimers

and Werner Borken

(Erickson Hall - A)

Theme 6 (continued)

Biogeochemistry of peatlands

Chairs: Kelman Wieder and

Lucy Sheppard

(Erickson Hall - B)

Theme 7/8

Carbon cycling in well- and poorly-drained soils

Chairs: Lucas Nave and

Knute Nadelhoffer

and

Juul Limpens and

Luca Bragazza

(Erickson Hall - C)

Theme 11

Applications of isotopes and tracers

Chairs: Martin Novak and

Tom Bullen

(Education Center)

2:00 pm - 2:30 pm

Theme 3 Plenary

William McDowell

Interactions between lithology and biology drive the long-term response of stream chemistry to major hurricanes in a tropical landscape

Theme 7 Plenary

Serita Frey

Soil carbon storage in response to long-term nitrogen additions in a temperate hardwood forest

Theme 11 Plenary

Richard Bindler

Atmospheric deposition and biogeochemical cycling of lead in the environment: insights from stable isotope analyses

2:30 pm - 3:00 pm

Theme 8 Plenary

Johannes Cornelissen

The role of functional traits of plant species in tundra soil carbon turnover

2:00 pm - 2:20 pm

6-7. Reeve, Andrew: Relationships between surface movement, hydraulic head, and biogenic gas in a northern Minnesota, USA peatland

2:20 pm - 2:40 pm

6-8. Blodau, Christian: Impact of experimental drying, rewetting, and flooding on belowground biogeochemistry in a northern fen: a synthesis

2:40 pm - 3:00 pm

3-1. *Laine, Merjo: Carbon and nitrogen fluxes in pristine and drained peat profiles in response to water table fluctuations

6-9. *Koebsch, Franzisk: Net ecosystem related to different rewetting intensities of a drained fen

11-1. Bullen, Thomas: Following water through catchments using the Ca-Sr-Ba multi-tracer: focusing in on the soil exchange pool

3:00 pm - 3:20 pm

3-2. *Koepp, Julia: N₂O emission in a Norway spruce forest under extreme meteorological boundary conditions - a résumé over six years of measurement

6-10. *Leith, Fraser: Peatland carbon production and transport: the role of the riparian zone

7/8-1. Olid, Carolina: Effects of temperature and N-fertilization on carbon accumulation rates in recent peat deposits

11-2. Pierret, Marie-Claire: Origin of the chemical and U-Sr isotopic variations of stream and source waters at a small catchment scale (the Strengbach case, Vosges mountains, France)

3:20 pm - 3:40 pm

3-3. Mattsson, Tuija: Spatial and temporal variability of riverine organic C and N fluxes induced by land use and climate

6-11. Nakayama, Tadanobu: Local heterogeneity and scaled dependence of eco-hydrological process in mire

7/8-2. *Kruger, Inken: Influence of coarse woody debris on the carbon stock of forest soils

11-3. *Van der Heijden, Gregory: An in situ, ecosystem-scale, multi-isotopic (²⁶Mg & ⁴⁴Ca) tracing experiment

3:40 pm - 4:00 pm

3-4. *Szkokan-Emilson, Erik: Drought-induced flux of metal contaminants from peatlands in watersheds vulnerable to extreme events

6-12. *Hansson, Sophia: Paleoproxies for peat decomposition and their relationship to the biogeochemical cycling of trace elements

7/8-3. Knorr, Klaus-Holger: DOC export dynamics and DOC quality during discharge events to identify sources, flow paths, and controls

11-4. Novak, Martin: Nitrogen dynamics in polluted Central European peat bogs:  A ²¹⁰Pb - ¹⁵N approach

4:00 pm - 4:20 pm

3-5. *Casson, Nora: Chemical and isotopic determination of flowpaths during rain-on-snow events at forested catchments

6-13. Bindler, Richard: Re-thinking the record: accumulation of radiometric tracers and other atmospherically supplied elements in peatlands

7/8-4. Oni, Stephen: Process-based modeling of dissolved organic carbon (DOC) dynamics in boreal headwaters

11-5. *Collins, Sarah: Examining the role of bacteria in stream food webs using a dual-isotope tracer approach

4:20 pm - 4:40 pm

11-6. Gebauer, Gerhard: Hydrogen stable isotope abundance patterns provide further insight into organic matter exchange in orchid mycorrhiza

4:30 pm - 6:00 pm

 Poster Session 2

(Refreshments available)

(The veranda and lobby of Erickson Hall)

6:30 pm - 9:00 pm

Conference Banquet and Entertainment featuring

Noel Paul Stookey

(The Pavilion)

6:45 am - 8:00 am

 Breakfast

(The Pavilion)

8:00 am - 8:15 am

Announcements

(Erickson Hall)

8:15 am - 8:55 am

Plenary 5

Emily Bernhardt, Duke University

"When experiments are insufficient: Dealing with the multidimensionality of environmental change"

(Erickson Hall)

Theme 9 (continued)

Experimental manipulations of ecosystems

Chairs: Lindsey Rustad and

 Jeff Dukes

(Erickson Hall - A)

Theme 10  (continued)

Trace element biogeochemistry and ecosystem impact

Chairs: James Kaste and

 Tomas Navratil

(Erickson - B)

Theme 13

The role of biogeochemistry in ecosystem restoration and rehabilitation

Chairs: Stefan Peiffer and Katherine Walton-Day

(Erickson - C)

Theme 14

Ecosystem management and ecosystem services

Chairs: Curtis J. Richardson and

 Chris Craft

(Education Center)

9:20 am - 9:50 am

Theme 13 Plenary

Curtis Richardson

The functional role of biogeochemistry in ecosystem restoration and rehabilitation

Theme 14 Plenary

Brian Murray

Economic incentives for ecosystem services: Where nature, policy, markets and reality meet

9:10 am - 9:30 am

9-6. Kopittke, Gillian: A long-term climate manipulation experiment: drought retards soil acidification

10-5. Boyer, Elizabeth: Atmospheric deposition of mercury in the northeastern United States and associated impacts on forested watersheds in Pennsylvania

9:30 am - 9:50 am

9-7. *Rancatti, Regina: Effects of watershed acidification on abiotic and biotic phosphorus uptake in streams draining two whole-watershed experimental forests

10-6. Nelson, Sarah: Seasonal controls on the temporal coherence of mercury and major ion throughfall flux in Acadia National Park, Maine USA

9:50 am - 10:10 am

9-8. Berger, Torsten: Predicting reversibility of soil acidification in beech (Fagus sylvatica) stands - introduction of a research project

10-7. Burns, Douglas: Mercury in soils of two contrasting watersheds in the eastern USA

13-1. *Kinsman-Costello, Lauren: Restoring Hydrology to a Historically Drained Wetland Causes Rapid Sediment P Release

14-1. Apfelbaum, Steven: Restoring ecological systems using revenues from ecosystem markets

10:10 am - 10:30 am

9-9. Lovett, Gary: Nitrogen addition increases carbon storage in soils, but not in trees, in forests of the Catskill Mountains, New York, USA

10-8. Kaste, James: Using a ²¹⁰Pb transport model to calculate loss rates of colloid-bound trace metals from O horizons

13-2. Macalady, Donald: Natural organic matter (NOM) as a mediator of redox processes critical to ecosystem restoration

14-2. Jackson, Bethanna: LUCI - a spatially and temporally explicit framework exploring opportunities for enhancing multiple ecosystem services through targeted land management

10:30 am - 10:50 am

9-10. Adams, Mary Beth: Effects on forest soils of fertilization: Results from two long-term experiments in West Virginia, USA

10-9. *Richardson, Justin: Temporal changes and vertical distribution of trace metals in upland forest soils across the northeastern United States

13-3. Allott, Tim: Short term impacts of peat restoration on water quality and dissolved carbon loss in an eroded upland peatland in the UK

14-3. *Qi, Yu: Short-term nitrogen addition and carbon sequestration in monocultures of three grassland species in Inner Mongolia, China

10:50 am - 11:10 am

Refreshments

(The veranda of Erickson Hall)

11:10 am - 11:30 am

9-11. Sheppard, Lucy: Have we oversimplified the model response of peatlands to N enrichment? - Observations from a 10 year N addition experiment

10-10. Shanley, Jamie: Intensive mercury cycling in the Luquillo Experimental Forest, Puerto Rico

13-4. Watmough, Shaun: A nutrient budget for a selection harvest in central Ontario: implications for sustainability

14-4. Craft, Christopher: Restored freshwater wetlands of the agricultural Midwest USA deliver some ecosystem services

11:30 am - 11:50 am

9-12. Limpens, Juul: Greenhouse versus field experiments: do they yield ecologically comparable results for assessing nitrogen impacts on peat mosses?

10-11. *Scott, Heidi: Head for the hills: mercury in upland catchments in Ireland

13-5. *Robison, Andrew: Base cation driven recovery of streams from acidification in the Ridge/Blue Ridge province of western Virginia

14-5. Vymazal, Jan: Ecosystem services from constructed wetlands for wastewater treatment

11:50 am - 12:10 pm

9-13. Fatemi, Farrah: Does chronic N enrichment alter ecosystem-scale C:N:P stoichiometry?

10-12. Huser, Brian: Spatial and temporal trends and controlling drivers of trace metals in rivers across Sweden

13-6. Smith, Sean: Nitrogen and sediment flux in engineered coastal streams

14-6. Forsius, Martin: Impacts and adaptation options of climate change on ecosystem services in Finland: a model based study

12:10 pm - 12:30 pm

9-14. Mineau, Madeleine: The effect of chronic watershed nitrogen deposition and acidification on the interaction among phosphorus, carbon, and nitrogen uptake in streams

10-13. Kram, Pavel: Arsenic streamwater runoff and atmospheric deposition in two catchments with contrasting acid-base chemistry in western Bohemia

13-7. Naftz, David: Using thermocline manipulation to remediate mercury-contaminated reservoirs in the southwestern United States: Pilot project results

14-7. Curtis, Peter: Managing Great Lakes forests for climate change mitigation

12:30 pm - 12:50 pm

9-15. Vidon, Philippe: Multi-contaminant dynamics and pollution tradeoffs in a restored wetland / riparian zone system - 10 years later

10-14. Rothwell, James: Physico-chemical speciation of arsenic in a headwater peatland stream

13-8. Peiffer, Stefan: Hydrological constraints for biogeochemical processes in acidic mining lakes

14-8. *Alam, Syed Ashraful: Impacts of climate change on savannah woodland biomass C density and water-use: a modelling study of the Sudanese gum belt region

12:50 pm - 1:40 pm

Lunch

(The Pavilion)

1:40 pm - 2:30 pm

Plenary 6

Kevin Boyle, Virginia Polytechnic Institute & State University

"The Failure of Cross-sectional Economic Valuation in a Time Series World"

(Erickson Hall)

2:35 pm - 4:00 pm

Closing Ceremony

Keynote address by

Senator George J. Mitchell

Student Awards

Comments from the Local Organizing Committee

Where to next?