Dear ISOGEOCHEM readers-

We are organizing a special session on trace metal and dissolved organic 
carbon cycling for the 2006 Spring Joint Assembly (American Geophysical 
Union, Geochemical Society, Microbeam Analysis Society, Mineralogical 
Society of America, and Society of Exploration Geophysicists) held May 
23-26 in Baltimore, MD.  The session description is copied below for your 
reference.  Meeting information can be found here: 
http://www.agu.org/meetings/ja06.  If you have any other questions about 
the meeting, please feel free to contact any of us directly using the 
information provided below.

We are calling for presentations from a wide variety of disciplinary 
perspectives, spatial and temporal scales, and environmental settings to 
address the relationship between trace metal and carbon environmental 
chemistry, especially in light of recent documented trends in surface 
water dissolved organic carbon.  Abstracts are due March 1, 2006. 
Submission details can be found here: 
http://submissions5.agu.org/submission/entrance.asp.

We look forward to seeing you there.

Thanks very much,
Rich, Ken, Ian, and Dan


B07: Coupled Trace Metal and DOC Dynamics from the Reach to the Landscape 
Scale 
Dissolved organic carbon (DOC) concentrations are increasing in surfaces 
waters, suggesting landscape scale shifts in DOC dynamics. However, 
examination of interactions between trace metals and DOC at the landscape 
and basin scale remains limited. In this session, we seek to begin 
addressing fundamental questions like the following:
Do landscape scale shifts in DOC quality affect the sorption and 
bio-availability of complexed metals?
Do diurnal changes in DOC driven by photochemistry drive a portion of the 
diurnal variation in stream water trace metal concentrations?
Do trace metal contaminated floodplain environments affect the quantity 
and quality of DOC arising from these source contribution areas?
We are especially interested in studies at the catchment-scale using 
emerging and novel techniques including stable isotope tools (i.e., both 
heavy and light elements), high temporal resolution sampling, and DOC 
characterization (e.g., fluorescence EEM spectrophotometry). In addition, 
we encourage submissions of research in all human dominated landscapes, 
and particularly urban areas.
Conveners: 
Daniel J Bain
US Geological Survey
Water Resources Division
US Geological Survey
MS 420, 345 Middlefield Rd
Menlo Park, CA, USA 94025
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Kenneth Belt
USDA Forest Service
Baltimore Ecosystem Study and Urban Forestry Ecol. Research Unit
NE/USDA Forest Service
Rm 180 TRC Bldg.
University of Maryland at Baltimore County
5200 Westland Blvd.
Baltimore, MD, USA 21227-2360
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Richard Pouyat
USDA Forest Service
c/o Baltimore Ecosystem Studies
5200 Westland Blvd., Rm. 134
Baltimore, MD, USA 21227
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Ian D Yesilonis
USDA Forest Service
USDA Forest Service
c/o Baltimore Ecosystem Studies
5200 Westland Blvd., Rm. 134
Baltimore, MD, USA 21227
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