A global database of sap flow measurements


During the embargo period (March, 2019 to March, 2020) data contributors can request access to the data in the Zenodo repository

Explore a brand new sap flow world!

Global coverage

Sapflow measurements from around the world

Data sharing and reuse

Promoting analyses of great scientific relevance and impact, and expanding the value of individual datasets

sapfluxnetr package

Explore and analyse the data in R


SAPFLUXNET is an initiative aiming at compiling a global database of sap flow measurements in plants led by CREAF researchers and an international team of collaborators. The main goal of SAPFLUXNET is to advance in the scientific understanding of the ecological factors driving plant transpiration across the globe.

SAPFLUXNET objectives

  1. To assemble a global database of sub-daily, tree-level sap flow, associated plant traits and site metadata.
  2. To estimate parameter-based traits related to physiological regulation of transpiration at scales from hours to entire growing seasons.
  3. To analyse the main ecological drivers of transpiration-related traits and annual tree transpiration.
  4. To investigate the co-variation of water use traits with other (mostly hydraulic) plant functional traits and its role in shaping the drought vulnerability of woody species.

SAPFLUXNET acknowledgements

SAPFLUXNET began as a 3-year project starting in October 2015 at CREAF and funded by the Spanish Ministry of Economy and Competitiveness MINECO (Grant Nº CGL2014-55883-JIN).

How to use SAPFLUXNET data

During the embargo period (March 2019 - March 2020) SAPFLUXNET will only be available to data contributors via Zenodo. We will grant access to the data only via requests received through the Zenodo website.

  • Please acknowledge the use of SAPFLUXNET by citing the SAPFLUXNET data paper or the Zenodo dataset, if the data paper is still unpublished.

  • When a small subset of SAPFLUXNET datasets are used, acknowledgement via citation of original publications presenting individual datasets should be considered.

  • Please use the sapfluxnetr package to access the SAPFLUXNET database, once downloaded.

  • For any questions or data issues please send us an email to

Known data errors (0.1.3 version):

  1. AUS_MAR_HSW_HIG: Bad plant names in plant metadata, sap flow data and data flags
  2. COL_MAC_SAF_RAD: Bad plant names in plant metadata, sap flow data and data flags
  3. ESP_YUN_T3_THI: Bad plant names in plant metadata, sap flow data and data flags

In order to fix these errors, copy and follow these instructions.

Ongoing data syntheses using SAPFLUXNET

Description of ongoing data syntheses and other papers using SAPFLUXNET data.

Researcher Institution Topic/Tentative title Start
Rafael Poyatos CREAF SAPFLUXNET data paper 2018
Víctor Flo CREAF Disentangling evaporative demand and soil moisture controls on tree transpiration 2018
Rafael Poyatos CREAF Global patterns of tree and stand transpiration 2019
Víctor Flo CREAF Relating plant water use and plant traits globally 2019
Víctor Granda JRU CREAF-CTFC The SAPFLUXNET data infrastructure and sapfluxnetr R package 2019

  • The paper in bold is the data paper presenting SAPFLUXNET, where all contributors will be listed as co-authors.

  • The paper in italics corresponds to the paper to be co-authored by all SAPFLUXNET data contributors whose data are used.