Treeline and Forest line mapping in Norway

Sampling event
Latest version published by University of Oslo on Apr 25, 2025 University of Oslo
Publication date:
25 April 2025
Published by:
University of Oslo
License:
CC-BY 4.0

Download the latest version of this resource data as a Darwin Core Archive (DwC-A) or the resource metadata as EML or RTF:

Data as a DwC-A file download 766 records in English (59 KB) - Update frequency: unknown
Metadata as an EML file download in English (8 KB)
Metadata as an RTF file download in English (8 KB)

Description

The dataset is structured in Darwin Core (DwC) format, utilizing the Event Core and Occurrence extension to organize and standardize the data. Each event represents a collection of treeline or forest line observations made at a specific location, encapsulating both historical and modern records. Historical observations, which typically include only altitude and the name of the location, are grouped with newer registrations that feature precise GPS coordinates. This approach ensures that all observations associated with a given site are grouped logically, facilitating temporal comparisons and allowing for comprehensive analysis of changes over time, even when precise spatial data is unavailable for older records. is a placeholder

Data Records

The data in this sampling event resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 766 records.

1 extension data tables also exist. An extension record supplies extra information about a core record. The number of records in each extension data table is illustrated below.

Event (core)
766
Occurrence 
1157

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versions

The table below shows only published versions of the resource that are publicly accessible.

How to cite

Researchers should cite this work as follows:

Tjessem, I. V., Horvath, P., Volden, I. K., Naas, A. E., Torma, M., & Bryn, A. (2025). Sampling of highest Betula pubescens subsp. czerepanovii treelines and forest lines in Norway. University of Oslo. Dataset/species occurrences. https://doi.org/10.15468/ua2sdc

Rights

Researchers should respect the following rights statement:

The publisher and rights holder of this work is University of Oslo. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

This resource has been registered with GBIF, and assigned the following GBIF UUID: 0a46c2f5-1d7c-49e9-bfd2-7065db24e168.  University of Oslo publishes this resource, and is itself registered in GBIF as a data publisher endorsed by GBIF Norway.

Keywords

Metadata

Contacts

Ingrid Vesterdal Tjessem
  • Originator
  • Point Of Contact
Doctoral Research Fellow
Natural History Museum
Michal Torma

Geographic Coverage

The TFLs have been resampled in 6 counties in Norway. Parts of the datasets cover large mountain regions of south-central Norway (Trøndelag, Innlandet and Buskerud), whereas the rest of the dataset covers a fiord-valley region of western Norway (Vestland) and an east-west gradient of northern Norway (Nordland and Troms). The dataset has been collected in the uppermost parts of the boreal (FL) and the lower parts of the alpine (TL) bioclimatic regions.

Bounding Coordinates South West [-90, -180], North East [90, 180]

Taxonomic Coverage

The dataset presented in this paper includes occurrence data exclusively for mountain birch (Betula pubescens subsp. czerepanovii).

Subspecies Betula pubescens subsp. czerepanovii (Mountain birch)

Project Data

No Description available

Title Natur i Endring

Sampling Methods

The original TFL locations were identified by searching published databases, literature, and documents. The original data only provided names of the specific mountain alongside aspect and elevation (measured with compass and aneroid barometer). All data was recorded in-situ.

Study Extent The study extent includes mainland Norway.

Method step description:

  1. It was crucial that the original publications included specific and precise locality names (name of municipality and mountain/site). The original locality names were used to locate sites based on a query in the standard Norwegian topographic maps (NMA 2017). If locality names had changed, they were identified with the help of historical analog maps. Furthermore, the original data had to include the following information: - elevation - tree-forming specie(s) - exposition/aspect (except 7 historical registrations with unknown aspect (NA)) The resampling was conducted through in-situ field mapping using Global Positioning Systems (GPSs) for elevation measurements and confined to the same tree-forming species (Betula pubescens subsp. czerepanovii) and exposition as the original entries.

Additional Metadata

Alternative Identifiers 0a46c2f5-1d7c-49e9-bfd2-7065db24e168
https://ipt.gbif.no/resource?r=tf-fl-norge