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78R8+RR Agali, Tartu maakond, Estonia

Monitoring period – GHG observations from the soil, stems and ecosystem (eddy covariance), meteorological and soil physicochemical and microbiological measurements in the Agali I forest, Estonia, 2017-2019

Short site description

The Agali I site is located in riparian forest near to Kalli River in Agali, Tartu County, Estonia. The area is situated on gley soil, and the thickness of the raw humus horizon at the study site ranges from 15 to 20 cm. The site is a former agricultural land dominated by 40-year-old grey alder (Alnus incana (L.) Moench) forest, and the understory includes bird cherry (Prunus padus L.), meadowsweet (Filipendula ulmaria (L.) Maxim.), and raspberries (Rubus idaeus L.)

Data available GHG (CO2, CH4, N2O) and atmospheric measurements techniques:
  • Automatic chambers: Frequent GHG flux measurements from the soil.
  • Manual chambers: GHG flux measurements from the soil.
  • Manual stem chambers: GHG flux measurements from the tree stems.
  • Eddy covariance system: Quantifies ecosystem-scale GHG exchanges between the biosphere and atmosphere.
  • Meteorological conditions: Monitoring temperature, precipitation, wind patterns, and other climatic variables.
https://datadoi.ee/handle/33/620 or https://doi.pangaea.de/10.1594/PANGAEA.926331?format=zip  Soil analyses: Physico-chemical analyses:
  • Soil temperature, water content and groundwater level. 
  • Soil pHKCl, total nitrogen (N%), NO3–, NH4+, total P, potassium (K), calcium (Ca), magnesium (Mg), and organic matter (OM) contents with the standard methods (APHA-AWWA-WEF, 2005).
https://datadoi.ee/handle/33/620 or https://doi.pangaea.de/10.1594/PANGAEA.926331?format=zip  Microbiological analyses: Educational materials:
  • Pictures
  • Video
  • Methodological videos

Publications available Mander, Ülo; Krasnova, Alisa; Escuer-Gatius, Jordi; Espenberg, Mikk; Schindler, Thomas; Machacova, Katerina; Pärn, Jaan; Maddison, Martin; Megonigal, J. Patrick; Pihlatie, Mari; Kasak, Kuno; Niinemets, Ülo; Junninen, Heikki; Soosaar, Kaido (2021). Forest canopy mitigates soil N2O emission during hot moments. npj Climate and Atmospheric Science, 4 (1), ARTN 39. DOI: 10.1038/s41612-021-00194-7. https://doi.org/10.1038/s41612-021-00194-7

Mander, Ü., Krasnova, A., Schindler, T., Megonigal, J.P., Escuer-Gatius, J., Espenberg, M., Machacova, K., Maddison, M., Pärn, J., Ranniku, R. and Pihlatie, M., 2022. Long-term dynamics of soil, tree stem and ecosystem methane fluxes in a riparian forest. Science of the Total Environment, 809, p.151723. https://doi.org/10.1016/j.scitotenv.2021.151723

In the Area

The Agali Experimental Forest, with its meticulous data collection and analysis, offers a unique window into the intricate workings of hemiboreal forests, a biome crucial for global climate regulation. This research delves into the forest’s significant role in the global carbon and nitrogen cycles, examining how the forest captures, stores, and releases these elements. The findings from Agali are helping scientists refine our understanding of how these vital ecosystems respond to various environmental stressors, including climate change. This knowledge is vital for developing effective forest management practices and for creating targeted climate change mitigation strategies. For example, understanding how the forest’s N2O emissions respond to fluctuations in temperature and soil moisture can inform practices to minimize these emissions and maximize the forest’s carbon sequestration potential. Agali’s research is contributing to a global effort to ensure the health and resilience of these vital ecosystems in the face of a changing planet.

Details

Nitrous oxide observations from the soil, stems and ecosystem (eddy covariance), meteorological and soil chemical measurements in the Agali experimental forest, Estonia, 2017-2019

Location

78R8+RR Agali, Tartu maakond, Estonia

Armed with high-tech instruments, researchers capture the elusive flows of nitrous oxide, a greenhouse gas capable of influencing the fate of our planet. They meticulously analyze the composition of the soil, measure temperature and humidity, and observe the whims of the wind.

More information about the research:

Estonian wetland forest

Mander, Ülo; Krasnova, Alisa; Escuer-Gatius, Jordi; Espenberg, Mikk; Schindler, Thomas; Machacova, Katerina; Pärn, Jaan; Maddison, Martin; Megonigal, J. Patrick; Pihlatie, Mari; Kasak, Kuno; Niinemets, Ülo; Junninen, Heikki; Soosaar, Kaido (2021). Forest canopy mitigates soil N2O emission during hot moments. npj Climate and Atmospheric Science, 4 (1), ARTN 39. DOI: 10.1038/s41612-021-00194-7.