Annual-Report-2019

Dr Wolfram Kloppmann
CONSORTIUM COORDINATOR
SMART LOIRE VALLEY Programme
Dr Wolfram Kloppmann (HDR), task officer at the Laboratory Division of BRGM, head of the Isotope Unit from 2011
to 2017, works in a broad field of environmental issues. His specialties include chemistry and isotope characteristics
of deep natural fluids including energy-relevant gases, groundwater, non-conventional water resources, water-rock
interactions in aquifers, isotope fingerprinting of water contaminants, but also the identification of the provenance of
cultural materials and the degradation of building stones. Most of his research work involved the use of environmental
isotopes. He coordinated the BRGM research program on non-conventional water resources and alternative concepts
of water management (2006-2011). He was the French coordinator of the 2014-2018 ANR-NSERC Franco-Canadian
G-Baseline project on impact assessment in the field of unconventional hydrocarbons.
MULTI-ISOTOPE AND CHEMICAL TRACING FOR UNDERSTANDING THE SOURCES
AND FATE OF MACRONUTRIENTS AT THE BASIN SCALE (MUTUAL)
Nitrogen and phosphorous flows induce water quality degradations, which are a major obstacle for reaching the “good
qualitative status” of European surface and groundwater bodies aimed by the European Water Framework Directive.
A diverse array of macronutrient sources and a complex network of transport pathways and reactive transformations
are evident for both groundwater and surface water receptors, creating a key challenge for the management of natural
resources. This consortium gathers experience on nutrient cycling in a variety of hydroclimatic, hydrogeological and
land use settings and a large variety of complementary tools in the field of environmental geochemistry.
Earth, Ecology & Environment Sciences 2019
This will allow merging advanced tracer techniques into a diagnostic toolbox for characterising macronutrient sources
and fate in aquatic ecosystems. The project aims on a critical analysis of the current approaches of source and fate
identification in contaminated watersheds. The project partners produced a shared database on chemical and isotopic
fingerprints of N and P sources in a diversity of catchments worldwide as basis of a common publication and common
presentations.
The first meeting from Jan. 16-20, 2017 was dedicated to a critical evaluation of the potential of multi-tracer approaches
to identify and quantify nutrient sources and transfer times in groundwater.
The second meeting from Dec. 4-8, 2017 was dedicated to the work on a common conceptual paper on catchments
affected by N and P excess: Structure breakdown, contents to be included, in the light of the current literature and the
ongoing studies of all project partners.
The third meeting, from June 11-14, 2018 allowed us to advance on a common publication on the effect nitrogen fixation
in soil and subsequent re-nitrification on the isotope fingerprints of nitrate.
A final workshop organised on June 18, 2019 in Orléans (France) brought together international experts in the field of
nutrient cycling and -tracing with regional stakeholders on the theme “N and P cycling in catchments: How can isotopes
guide water resources management?”.
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