Nature's Calendar: Plant's Calendar - phenological observations made by Citizen Scientists
type: Dataset
description: Nature's Calendar (www.naturenskalender.se, in Swedish only) is run by the Swedish National Phenology Network (SWE-NPN), a consortium of Swedish universities, governmental agencies and non-governmental organisations. The Swedish University of Agricultural Sciences (SLU) hosts the network and is part of the Climate program within the environmental monitoring and assessment activity branch of the university. The main task for the Nature's calendar is to collect observations of different spring and autumn signs appearing during the vegetation season. SWE-NPN is connected to the monitoring of the Swedish Environmental Objectives, mainly concerning the objective Reduced Climate Impact, but is also collaborating with networks in Europe (through the Pan-European Phenology database - PEP725) and internationally (through the International Society of Biometeorology). Data about the nature's calendar is collected in two ways, the long-term environmental monitoring through "Calendars", where phenological observations are reported all through the year, and through "Checks", where phenology observations are reported during short-time campaigns, giving a snapshot of the phenological status at a certain time of the year. The long-term environmental monitoring is performed by citizen scientists and professional observers at research stations and like. Three calendars have been launched in the Nature's Calendar; the Plant's Calendar (from 2008), the Bird's Calendar (from 2016) and the Beekeeper's Calendar (between 2015 and 2018). Aims The aim of the Nature's Calendar is to collect phenological data from the first spring sign to the last autumn sign, to be able to offer nation-wide data to everyone interested, to facilitate research, environmental assessments, the evaluation of environmental goals, etc, to be better prepared to meet the effects of climate change. Observations reported to the Nature's Calendar can be compared to similar observations collected for more than 100 years ag…
conditions of access: http://publications.europa.eu/resource/authority/access-right/PUBLIC
conditions of access: info:eu-repo/semantics/openAccess
creative work status: completed
  type: DefinedTerm
  in defined term set: http://publications.europa.eu/resource/authority/dataset-status
  term code: COMPLETED
creator: Ola Langvall
creator: Åslög Dahl
creator: Jacob Johansson
creator: Kjell Bolmgren
date modified: 2025-04-28
date published: 2025-04-28
funding: Swedish National Phenology Network
  type: Grant
  description: The Faculty of Forest Sciences at the Swedish University of Agricultural Sciences has financed the Swedish National Phenology Network, inclusive this data collection, which is part of the Environmental Monitoring and Assessment program "Climate".
  funder: Swedish University of Agricultural Sciences
language: English
language: Swedish
is part of: https://doi.org/10.5878/c0n3-km98
keywords: Climate Science
  type: DefinedTerm
  term code: 10501
keywords: Environmental Sciences
  type: DefinedTerm
  term code: 10502
keywords: Ecology
  type: DefinedTerm
  description: Including: Biodiversity Conservation
  term code: 10611
keywords: Biota
keywords: Species distribution
keywords: phenology
keywords: participatory research
keywords: citizen science
keywords: Nature's calendar
license: https://creativecommons.org/publicdomain/zero/1.0/
publisher: Swedish University of Agricultural Sciences
size: QuantitativeValue
  unit text: variables
  value: 15
spatial coverage: Sweden
temporal coverage: 2008-01-01
distribution: data/plants_calendar_2008-2024.csv
  type: DataDownload
  additional type: data
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  conditions of access: info:eu-repo/semantics/openAccess
  content size: 20762536
  encoding format: text/csv
distribution: data/plants_calendar_phaselist_2008-2024.csv
  type: DataDownload
  additional type: data
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  content size: 4000
  encoding format: text/csv
distribution: data/plants_calendar_specieslist_2008-2024.csv
  type: DataDownload
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  content size: 58263
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distribution: documentation/lista-nationellt-skyddsklassade-arter-20230612-uppdat-20240425.pdf
  type: DataDownload
  additional type: documentation
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distribution: documentation/metadata_plants_calendar_2008-2024.pdf
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distribution: documentation/vaxtkalendern_fenologimanual_2021.pdf
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version: 2

PropertyValue
property ID: DOI
value: 10.5878/h4ez-wy68

principalRegistrationNumber
type: PropertyValue
property ID: https://www.rikstermbanken.se/termposter/1848/diarienummer
value: SLU.esf.2025.4.2.IÄ-1

Ola Langvall
type: Person
affiliation: Swedish University of Agricultural Sciences
family name: Langvall
given name: Ola

Swedish University of Agricultural Sciences
type: Organization
department: Unit for Field-based Forest Research

Åslög Dahl
type: Person
affiliation: University of Gothenburg
family name: Dahl
given name: Åslög

University of Gothenburg
type: Organization
department: Department of Biological & Environmental Sciences

Jacob Johansson
type: Person
affiliation: Lund University
family name: Johansson
given name: Jacob

Lund University
type: Organization
department: Department of Biology

Kjell Bolmgren
type: Person
affiliation: Swedish University of Agricultural Sciences
family name: Bolmgren
given name: Kjell

English
type: Language
alternate name: eng

Swedish
type: Language
alternate name: swe

Biota
type: DefinedTerm
description: Flora and/or fauna in natural environment.
term code: biota

PLANT PHENOLOGY
type: DefinedTerm
description: The science that treats the periodic biological phenomena with relation to\nclimate, especially seasonal changes.\nPhenological events are stages of plant growth. From a climatological\nviewpoint, these phenomena serve as bases for the interpretation of progress inlocal seasons and the climatic zones, and are considered to integrate the\neffects of a number of bioclimatic factors on rate of plant development.\nPhenology may be considered a branch of the science of bioclimatics, the\nsequence of plant or crop development stages through its life cycle. Growth\nstages may be defined by stage of physiological development such as\ngermination, first true leaf, flowering, maturity, etc., and/or by physical\nstage such as planting, emergence, harvest, etc.

Species distribution
type: DefinedTerm
description: Geographical distribution of occurrence of animal and plant species aggregated by grid, region, administrative unit or other analytical unit.
term code: sd

phenology
type: DefinedTerm
term code: c_5774

participatory research
type: DefinedTerm
term code: c_71af8999

citizen science
type: DefinedTerm
term code: c_f888df97

Sweden
type: Place