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The PeatPic project : predicting plot-scale green leaf phenology across peatlands

Title: The PeatPic project : predicting plot-scale green leaf phenology across peatlands
Authors: Davidson, Scott J.; Malhotra, Avni; Jassey, Vincent E. J.; Strack, Maria; Aitova, Elena; Anderson, Russell; Atkinson, Lindsey J.; Barel, Janna M.; Bird, Melanie; Brehier, Clarisse; Donaldson-Selby, Gillian; Duley, Emma; Eklof, Joel; de Eyto, Elvira; Granath, Gustaf; Grant, Alanna; Hartmann, Antonia; Holland, Aleicia; Huth, Vytas; Jones, Cheristy P.; Lee, Sung-Ching; Lopatin, Javier; Milner, Alice M.; Peacock, Mike; Peichl, Matthias; Perez-Quezada, Jorge F.; Perryman, Clarice R.; Pickard, Amy; Rautakoski, Helena; Silvester, Ewen; Virkkala, Anna-Maria; Wegener, Emma
Publisher Information: Uppsala universitet, Växtekologi och evolution; School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, United Kingdom; Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada; Department of Ecological, Plant and Animal Sciences, School of Agriculture, Biomedicine and Environment, La Trobe University, Albury-Wodonga Campus, Victoria, Australia; Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, United States of America; Department of Geography, University of Zurich, Zurich, Switzerland; Université de Toulouse, Toulouse INP, CNRS, IRD, CRBE, Toulouse, France; Department of Geography and Environmental Management, University of Waterloo, Waterloo, ON, Canada; Discipline of Geography and The Ryan Institute, University of Galway, Galway, Ireland; Friends of Leadburn Community Woodland, Leadburn, United Kingdom; Forest Research, Roslin, Midlothian, United Kingdom; School of Environmental and Life Sciences, University of Hull, Hull, United Kingdom; Université de Toulouse, Toulouse INP, CNRS, IRD, CRBE, Toulouse, France; Ecology & Biodiversity, Institute of Environmental Biology, Department of Biology, Faculty of Science, Utrecht University, Utrecht, The Netherlands; University of Applied Sciences Weihenstephan-Triesdorf, Friesing, Germany; James Hutton Institute, Aberdeen, United Kingdom; School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, United Kingdom; Civil and Environmental Engineering, University of Washington, Seattle, WA, United States of America; Department of Environmental Studies and Sciences, University of Puget Sound, Tacoma, WA, United States of America; Marine Institute, Furnace, Newport, Co., Mayo, Ireland; UK Centre for Ecology & Hydrology, Edinburgh, Bush Estate, Penicuik, Midlothian, United Kingdom; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, Sweden; Department of Ecological, Plant and Animal Sciences, School of Agriculture, Biomedicine and Environment, La Trobe University, Albury-Wodonga Campus, Victoria, Australia; Peatland Science, Institute of Botany and Landscape Ecology, University of Greifswald, Partner in the Greifswald Mire Centre, Greifswald, Germany; Department of Earth Sciences and the Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, Durham, NH, United States of America; Department of Biogeochemical Integration, Max Planck Institute for Biogeochemistry, Jena, Germany; Faculty of Engineering and Science, University Adolfo Ibáñez, Santiago, Chile; Department of Geography, Royal Holloway University of London, Egham, United Kingdom; Department of Geography and Planning, School of Environmental Science, University of Liverpool, Liverpool, United Kingdom; Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden; Department of Environmental Sciences and Renewable Natural Resources, University of Chile, Santiago, Chile; Institute of Ecology and Biodiversity, Barrio Universitario, Concepción, Chile; Cape Horn International Center, Punta Arenas, Chile; Department of Earth System Science, Stanford University, Stanford, CA, United States of America; Finnish Meteorological Institute, Helsinki, Finland; Woodwell Climate Research Center, Falmouth, MA, United States of America; Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland
Publication Year: 2025
Collection: Uppsala University: Publications (DiVA)
Subject Terms: peatlands; green leaf phenology; community science; energy balance; environmental change; low cost monitoring; Ecology; Ekologi; Environmental Sciences; Miljövetenskap; Physical Geography; Naturgeografi
Description: Peatlands store approximately one-third of the world's soil carbon (C), but their functioning is highly variable at fine spatial scales due to differences in vegetation cover and environmental conditions such as water table depth. This fine-scale heterogeneity plays a key role in carbon dynamics yet capturing it-particularly in relation to green leaf phenology (GLP)-is challenging with traditional remote sensing methods. To address this, we developed a smartphone-based methodology and community-science project called the PeatPic Project. We gathered over 3700 photographs from 27 sites across 10 countries in 2021 and 2022, representing different peatland types (bog, fen, and swamp), at 1-2 week intervals. We calculated GLP metrics, such as the data of the start of the season and end of the season, based on the red-blue-green bands from these photographs. We found that GLP metrics varied significantly across peatland types and dominant vegetation communities. Notably, peak greenness at bog sites occurring approximately 10 days later in the year compared to fen sites. Furthermore, variables relation to peatland/vegetation type and energy balance were key predictors of peatland GLP. The PeatPic Project's readily available methodology offers low-cost opportunities for further research into peatland phenology, enabling the calculation of additional phenological indices and integration with other data types. By refining our understanding of peatland GLP, we can improve predictive C modelling and better assess the impacts of future changes on these important ecosystems.
Document Type: article in journal/newspaper
File Description: application/pdf
Language: English
Relation: Environmental Research Letters, 2025, 20:11; ISI:001590806900001
DOI: 10.1088/1748-9326/ae0658
Availability: http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-570575; https://doi.org/10.1088/1748-9326/ae0658
Rights: info:eu-repo/semantics/openAccess
Accession Number: edsbas.9BF38683
Database: BASE