Descrição
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
Registros de Dados
Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 766 registros.
Também existem 1 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.
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.
Versões
A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.
Como citar
Pesquisadores deveriam citar esta obra da seguinte maneira:
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
Direitos
Pesquisadores devem respeitar a seguinte declaração de direitos:
O editor e o detentor dos direitos deste trabalho é University of Oslo. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.
GBIF Registration
Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 0a46c2f5-1d7c-49e9-bfd2-7065db24e168. University of Oslo publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por GBIF Norway.
Palavras-chave
Metadata
Contatos
- Originador ●
- Ponto De Contato
https://orcid.org/0009-0004-9151-2833
- Usuário
Cobertura Geográfica
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.
| Coordenadas delimitadoras | Sul Oeste [-90, -180], Norte Leste [90, 180] |
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Cobertura Taxonômica
The dataset presented in this paper includes occurrence data exclusively for mountain birch (Betula pubescens subsp. czerepanovii).
| Subespécie | Betula pubescens subsp. czerepanovii (Mountain birch) |
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Dados Sobre o Projeto
Nenhuma descrição disponível
| Título | Natur i Endring |
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Métodos de Amostragem
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.
| Área de Estudo | The study extent includes mainland Norway. |
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Descrição dos passos do método:
- 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.
Metadados Adicionais
| Identificadores alternativos | 0a46c2f5-1d7c-49e9-bfd2-7065db24e168 |
|---|---|
| https://ipt.gbif.no/resource?r=tf-fl-norge |