SAPFLUXNET: A global database of sap flow measurements

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dc.contributor.affiliationCREAF - Rafael Poyatos
dc.contributor.affiliationCREAF - Víctor Granda
dc.contributor.affiliationCREAF - Víctor Flo
dc.contributor.affiliationCREAF - Roberto Molowny-Horas
dc.contributor.affiliationGhent University - Kathy Steppe
dc.contributor.affiliationICREA/CREAF - Maurizio Mencuccini
dc.contributor.affiliationCREAF/Universitat Autònoma de Barcelona - Jordi Martínez-Vilalta
dc.contributor.authorRafael Poyatos
dc.contributor.authorVíctor Granda
dc.contributor.authorVíctor Flo
dc.contributor.authorRoberto Molowny-Horas
dc.contributor.authorKathy Steppe
dc.contributor.authorMaurizio Mencuccini
dc.contributor.authorJordi Martínez-Vilalta
dc.contributor.roleAdams, Mark DataCollector
dc.contributor.roleAdorján, Balázs DataCollector
dc.contributor.roleAguadé, David DataCollector
dc.contributor.roleAidar, Marcos P.M. DataCollector
dc.contributor.roleAllen, Scott DataCollector
dc.contributor.roleAlvarado, Susana DataCollector
dc.contributor.roleAnderson-Teixeira, Kristina DataCollector
dc.contributor.roleAparecido, Luiza Maria DataCollector
dc.contributor.roleArain, Altaf DataCollector
dc.contributor.roleAranda, Ismael DataCollector
dc.contributor.roleAsbjornsen, Heidi DataCollector
dc.contributor.roleBaxter, Robert DataCollector
dc.contributor.roleBeamesderfer, Eric DataCollector
dc.contributor.roleBerry, Carter DataCollector
dc.contributor.roleBerveiller, Daniel DataCollector
dc.contributor.roleBlakely, Bethany DataCollector
dc.contributor.roleBoegelein, Rebekka DataCollector
dc.contributor.roleBoggs, Johnny DataCollector
dc.contributor.roleBohrer, Gil DataCollector
dc.contributor.roleBolstad, Paul DataCollector
dc.contributor.roleBonal, Damien DataCollector
dc.contributor.roleBracho, Rosvel DataCollector
dc.contributor.roleBrito, Patricia DataCollector
dc.contributor.roleBrodeur, Jason DataCollector
dc.contributor.roleCasanoves, Fernando DataCollector
dc.contributor.roleChave, Jérôme DataCollector
dc.contributor.roleCisneros, Cesar DataCollector
dc.contributor.roleClark, Kenneth DataCollector
dc.contributor.roleCremonese, Edoardo DataCollector
dc.contributor.roleDang, Hongzhong DataCollector
dc.contributor.roleDavid, Jorge DataCollector
dc.contributor.roleDavid, Teresa DataCollector
dc.contributor.roleDelpierre, Nicolas DataCollector
dc.contributor.roleDesai, Ankur DataCollector
dc.contributor.roleDo, Frederic C. DataCollector
dc.contributor.roleDohnal, Michal DataCollector
dc.contributor.roleDomec , Jean-Christophe DataCollector
dc.contributor.roleDzikiti, Sebinasi DataCollector
dc.contributor.roleEdgar, Colin DataCollector
dc.contributor.roleElbers, Jan DataCollector
dc.contributor.roleEller, Cleiton DataCollector
dc.contributor.roleEllsworth, David DataCollector
dc.contributor.roleEl-Madany, Tarek S. DataCollector
dc.contributor.roleEuskirchen, Eugénie DataCollector
dc.contributor.roleEwers, Brent DataCollector
dc.contributor.roleFonti, Patrick DataCollector
dc.contributor.roleForner, Alicia DataCollector
dc.contributor.roleForrester, David DataCollector
dc.contributor.roleFreitas, Helber DataCollector
dc.contributor.roleGalvagno, Marta DataCollector
dc.contributor.roleGarcia-Tejera, Omar DataCollector
dc.contributor.roleGhimire, Chandra Prasad DataCollector
dc.contributor.roleGimeno, Teresa DataCollector
dc.contributor.roleGrace, John DataCollector
dc.contributor.roleGranier, André DataCollector
dc.contributor.roleGriebel, Anne DataCollector
dc.contributor.roleGuangyu, Yan DataCollector
dc.contributor.roleGush, Mark DataCollector
dc.contributor.roleHanson, Paul DataCollector
dc.contributor.roleHasselquist, Niles DataCollector
dc.contributor.roleHeinrich, Ingo DataCollector
dc.contributor.roleHernandez-Santana, Virginia DataCollector
dc.contributor.roleHerrmann, Valentine DataCollector
dc.contributor.roleHölttä, Teemu DataCollector
dc.contributor.roleHolwerda, Friso DataCollector
dc.contributor.rolehui, Chen DataCollector
dc.contributor.roleIrvine, James DataCollector
dc.contributor.roleIsarangkool na Ayutthaya, Supat DataCollector
dc.contributor.roleJarvis, Paul DataCollector
dc.contributor.roleJochheim, Hubert DataCollector
dc.contributor.roleJoly, Carlos A. DataCollector
dc.contributor.roleKaplick, Julia DataCollector
dc.contributor.roleKim, Hyun Seok DataCollector
dc.contributor.roleKlemedtsson, Leif DataCollector
dc.contributor.roleKropp, Heather DataCollector
dc.contributor.roleLagergren, Fredrik DataCollector
dc.contributor.roleLane, Patrick DataCollector
dc.contributor.roleLang, Petra DataCollector
dc.contributor.roleLapenas, Andrei DataCollector
dc.contributor.roleLechuga, Víctor DataCollector
dc.contributor.roleLee, Minsu DataCollector
dc.contributor.roleLeuschner, Christoph DataCollector
dc.contributor.roleLimousin, Jean-Marc DataCollector
dc.contributor.roleLinares, Juan Carlos DataCollector
dc.contributor.roleLinderson, Maj-Lena DataCollector
dc.contributor.roleLindroth, Anders DataCollector
dc.contributor.roleLlorens, Pilar DataCollector
dc.contributor.roleLopez-Bernal, Alvaro DataCollector
dc.contributor.roleLoranty, Michael DataCollector
dc.contributor.roleLüttschwager, Dietmar DataCollector
dc.contributor.roleMacinnis-Ng, Cate DataCollector
dc.contributor.roleMaréchaux, Isabelle DataCollector
dc.contributor.roleMartin, Timothy DataCollector
dc.contributor.roleMartínez-Vilalta, Jordi DataCollector
dc.contributor.roleMatheny, Ashley DataCollector
dc.contributor.roleMcDowell, Nate DataCollector
dc.contributor.roleMcMahon, Sean DataCollector
dc.contributor.roleMeir, Patrick DataCollector
dc.contributor.roleMencuccini, Maurizio DataCollector
dc.contributor.roleMészáros, Ilona DataCollector
dc.contributor.roleMigliavacca, Mirco DataCollector
dc.contributor.roleMitchell, Patrick DataCollector
dc.contributor.roleMölder, Meelis DataCollector
dc.contributor.roleMontagnani, Leonardo DataCollector
dc.contributor.roleMoore, Georgianne DataCollector
dc.contributor.roleNakada, Ryogo DataCollector
dc.contributor.roleNiu, Furong DataCollector
dc.contributor.roleNolan, Rachael DataCollector
dc.contributor.roleNorby, Rich DataCollector
dc.contributor.roleNovick, Kimberly DataCollector
dc.contributor.roleOberhuber, Walter DataCollector
dc.contributor.roleObojes, Nikolaus DataCollector
dc.contributor.roleOishi, A. Christopher DataCollector
dc.contributor.roleOliveira, Rafael DataCollector
dc.contributor.roleOren, Ram DataCollector
dc.contributor.roleOurcival, Jean-Marc DataCollector
dc.contributor.rolePaljakka, Teemu DataCollector
dc.contributor.rolePerez-Priego, Oscar DataCollector
dc.contributor.rolePeri, Pablo DataCollector
dc.contributor.rolePeters, Richard L. DataCollector
dc.contributor.rolePfautsch, Seabstian DataCollector
dc.contributor.rolePockman, William DataCollector
dc.contributor.rolePoyatos, Rafael DataCollector
dc.contributor.rolePreisler, Yakir DataCollector
dc.contributor.roleRascher, Katherine DataCollector
dc.contributor.roleRobinson, George DataCollector
dc.contributor.roleRocha, Humberto DataCollector
dc.contributor.roleRocheteau, Alain DataCollector
dc.contributor.roleRöll, Alexander DataCollector
dc.contributor.roleRosado, Bruno DataCollector
dc.contributor.roleRowland, Lucy DataCollector
dc.contributor.roleRubtsov, Alexey DataCollector
dc.contributor.roleSabaté, Santiago DataCollector
dc.contributor.roleSalmon, Yann DataCollector
dc.contributor.roleSalomón, Roberto Luis DataCollector
dc.contributor.roleSánchez-Costa, Elisenda DataCollector
dc.contributor.roleSchäfer, Karina DataCollector
dc.contributor.roleSchuldt, Bernhard DataCollector
dc.contributor.roleShashkin, Alexandr DataCollector
dc.contributor.roleStahl, Clément DataCollector
dc.contributor.roleStojanović, Marko DataCollector
dc.contributor.roleSuárez Salazar, Juan Carlos DataCollector
dc.contributor.roleSun, Ge DataCollector
dc.contributor.roleSzatniewska, Justyna DataCollector
dc.contributor.roleTatarinov, Fyodor DataCollector
dc.contributor.roleTesař, Miroslav DataCollector
dc.contributor.roleThomas, Frank M. DataCollector
dc.contributor.roleTor-ngern, Pantana DataCollector
dc.contributor.roleUrban, Josef DataCollector
dc.contributor.roleValladares, Fernando DataCollector
dc.contributor.rolevan der Tol, Christiaan DataCollector
dc.contributor.rolevan Meerveld, H.J. (Ilja) DataCollector
dc.contributor.roleVarlagin, Andrej DataCollector
dc.contributor.roleVoigt, Holm DataCollector
dc.contributor.roleWarren, Jeffrey DataCollector
dc.contributor.roleWerner, Willy DataCollector
dc.contributor.roleWerner, Christiane DataCollector
dc.contributor.roleWieser, Gerhard DataCollector
dc.contributor.roleWingate, Lisa DataCollector
dc.contributor.roleWullschleger, Stan DataCollector
dc.contributor.roleYi, Koong DataCollector
dc.contributor.roleZweifel, Roman DataCollector
dc.date.accessioned2025-03-24T15:26:31Z
dc.date.issued2020-08-04
dc.date.issued2020-08-04
dc.descriptionGeneral description SAPFLUXNET contains a global database of sap flow and environmental data, together with metadata at different levels. SAPFLUXNET is a harmonised database, compiled from contributions from researchers worldwide.  The SAPFLUXNET version 0.1.5 database harbours 202 globally distributed datasets, from 121 geographical locations. SAPFLUXNET contains sap flow data for 2714 individual plants (1584 angiosperms and 1130 gymnosperms), belonging to 174 species (141 angiosperms and 33 gymnosperms), 95 different genera and 45 different families. More information on the database coverage can be found here: http://sapfluxnet.creaf.cat/shiny/sfn_progress_dashboard/.  The SAPFLUXNET project has been developed by researchers at CREAF and other institutions (http://sapfluxnet.creaf.cat/#team), coordinated by Rafael Poyatos (CREAF, http://www.creaf.cat/staff/rafael-poyatos-lopez), and funded by two Spanish Young Researcher's Grants  (SAPFLUXNET, CGL2014-55883-JIN; DATAFORUSE, RTI2018-095297-J-I00 ) and an Alexander von Humboldt Research Fellowship for Experienced Researchers). Changelog  Compared to version 0.1.4, this version includes some changes in the metadata, but all time series data (sap flow, environmental) remain the same.  For all datasets, climate metadata (temperature and precipitation, ‘si_mat’ and ‘si_map’) have been extracted from CHELSA (https://chelsa-climate.org/), replacing the previous climate data obtained with Wordclim. This change has modified the biome classification of the datasets in ‘si_biome’. In ‘species’ metadata, the percentage of basal area with sap flow measurements for each species (‘sp_basal_area_perc’) is now assigned a value of 0 if species are in the understorey. This affects two datasets: AUS_MAR_UBD and AUS_MAR_UBW, where, previously, the sum of species basal area percentages could add up to more than 100%. In ‘species’ metadata, the percentage of basal area with sap flow measurements for each species (‘sp_basal_area_perc’) has been corrected for datasets USA_SIL_OAK_POS, USA_SIL_OAK_1PR, USA_SIL_OAK_2PR. In ‘site’ metadata, the vegetation type (‘si_igbp’) has been changed to SAV for datasets CHN_ARG_GWD and CHN_ARG_GWS. Variables and units SAPFLUXNET contains whole-plant sap flow and environmental variables at sub-daily temporal resolution. Both sap flow and environmental time series have accompanying flags in a data frame, one for sap flow and another for environmental variables. These flags store quality issues detected during the quality control process and can be used to add further quality flags.  Metadata contain relevant variables informing about site conditions, stand characteristics, tree and species attributes, sap flow methodology and details on environmental measurements. The description and units of all data and metadata variables can be found here: Metadata and data units. To learn more about variables, units and data flags please use the functionalities implemented in the sapfluxnetr package (https://github.com/sapfluxnet/sapfluxnetr). In particular, have a look at the package vignettes using R: # remotes::install_github( # 'sapfluxnet/sapfluxnetr', # build_opts = c("--no-resave-data", "--no-manual", "--build-vignettes") # ) library(sapfluxnetr) # to list all vignettes vignette(package='sapfluxnetr') # variables and units vignette('metadata-and-data-units', package='sapfluxnetr') # data flags vignette('data-flags', package='sapfluxnetr') Data formats SAPFLUXNET data can be found in two formats: 1) RData files belonging to the custom-built 'sfn_data' class and 2) Text files in .csv format. We recommend using the sfn_data objects together with the sapfluxnetr package, although we also provide  the text files for convenience. For each dataset, text files are structured in the same way as the slots of sfn_data objects; if working with text files, we recommend that you check the data structure of 'sfn_data' objects in the corresponding vignette. Working with sfn_data files To work with SAPFLUXNET data, first they have to be downloaded from Zenodo, maintaining the folder structure. A first level in the folder hierarchy corresponds to file format, either RData files or csv's. A second level corresponds to how sap flow is expressed: per plant, per sapwood area or per leaf area. Please note that interconversions among the magnitudes have been performed whenever possible. Below this level, data have been organised per dataset. In the case of RData files, each dataset is contained in a sfn_data object, which stores all data and metadata in different slots (see the vignette 'sfn-data-classes'). In the case of csv files, each dataset has 9 individual files, corresponding to metadata (5), sap flow and environmental data (2) and their corresponding data flags (2). After downloading the entire database, the sapfluxnetr package can be used to: - Work with data from a single site: data access, plotting and time aggregation. - Select the subset datasets to work with. - Work with data from multiple sites: data access, plotting and time aggregation. Please check the following package vignettes to learn more about how to work with sfn_data files: Quick guide Metadata and data units sfn_data classes Custom aggregation Memory and parallelization Working with text files We recommend to work with sfn_data objects using R and the sapfluxnetr package and we do not currently provide code to work with text files.  Data issues and reporting Please report any issue you may find in the database by sending us an email: sapfluxnet@creaf.uab.cat. Temporary data fixes, detected but not yet included in released versions will be published in SAPFLUXNET main web page ('Known data errors'). Data access, use and citation This version of the SAPFLUXNET database is open access and corresponds to the data paper submitted to Earth System Science Data in August 2020. When using SAPFLUXNET data in an academic work, please cite the data paper, when available, or alternatively, the Zenodo dataset (see the ‘Cite as’ section on the right panels of this web page).
dc.identifierhttps://doi.org/10.5281/zenodo.3971689
dc.identifier.urihttps://hydatakatalogi-test-24.it.helsinki.fi/handle/123456789/11448
dc.rightsOpen
dc.rights.licensecc-by-4.0
dc.subjectdrought
dc.subjectecohydrology
dc.subjectecophysiology
dc.subjectplant hydraulics
dc.subjectplant water use
dc.subjectsap flux
dc.subjecttranspiration
dc.titleSAPFLUXNET: A global database of sap flow measurements
dc.typedataset
dc.typedataset

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