Ecotron
DÉFIS SCIENTIFIQUES
PRINCIPLE ECOTRON
Ecotron Definition
An Ecotron is an experimental device in ecology used to study the impact of climate on ecosystem functioning and biodiversity. It typically consists of multiple identical experimental units, which enable the confinement of an ecosystem, control of environmental conditions, and real-time measurement of ecophysiological processes.
A simple principle
Ecosystem samples—whether natural or artificial—are confined in experimental chambers where environmental conditions (air and soil temperature/humidity, soil matric potential, atmospheric CO₂ concentration, precipitation, and light) are controlled and follow predefined climate scenarios. Confinement also enables the measurement of molecular exchanges (flux measurements) between ecosystem compartments and the atmosphere.
SERIES OF EXPERIMENTAL UNITS
An Ecotron platform consists of a series of units designed to replicate treatments and meet the statistical requirements of studies. A minimum of 12 units is required, as this allows for the study of 2 factors at 2 levels in a fully factorial design with 3 replicates (2×2×3=12). Many other factor combinations are also possible.
SCIENTIFIC CHALLENGES
(Excerpt from the AnaEE Programme Vision Document)
The sustainability of agricultural, forest, freshwater, and other managed and natural ecosystems is essential for the future of humanity. However, the services provided by these ecosystems are threatened by climate change, biodiversity loss, and changes in land use.
To address the challenges of preserving or enhancing ecosystem services, ensuring food security, and building a 21st-century bioeconomy, we must understand and predict how ecosystems will respond to current and future changes. This includes assessing new management approaches and potential environmental tipping points.
Without a sufficient understanding of the sensitive interdependencies between ecosystems and the environment, Europe will be unable to assess impacts, control risks, or potentially harness the benefits of the major anticipated changes in ecosystem structure and function. Key benefits include the mitigation of greenhouse gases and adaptation to climate change.
