Presence data for vascular plant, bryophyte and lichen species in 100 vegetation plots (each 1 m2) from 32 shell-beds at Akerøya, Hvaler, SE Norway
Citation
Løfall B P, Halvorsen R (2022). Presence data for vascular plant, bryophyte and lichen species in 100 vegetation plots (each 1 m2) from 32 shell-beds at Akerøya, Hvaler, SE Norway. Version 1.8. University of Oslo. Occurrence dataset https://doi.org/10.15468/p864ew accessed via GBIF.org on 2024-12-12.Description
We present a data set consisting of abundance data for 106 vascular plant species, 36 bryophyte species and 13 lichen species from 100 vegetation plots, each 1 m2, distributed on 32 shell-beds at Akerøya, Hvaler municipality, former Østfold (in 2022 Viken) county. The plots were analysed with respect to species composition in June 1979. These data formed the basis for the publication: Halvorsen, R. 1980. Numerical analysis and successional relationships of shell-bed vegetation at Akerøya, Hvaler, SE Norway. Norw. J. Bot. Vol. 27 pp. 71-95. Oslo. ISSN 0300-1156.Sampling Description
Study Extent
100 vegetation plots (each 1 m2) from 32 shell-beds at Akerøya, Hvaler, SE Norway, during July 1979Sampling
Species abundance values were obtained by visual assessment, using the Hult-Sernander-Du Rietz cover scale, published, e.g. in Du Rietz, G.E. 1921. Zur metodologischen Grundlage der modernen Pflanzensoziologie. Uppsala. The values of this five-grade ordinal scale are: Value | Percentage cover (%) 1 | present but <6.25% 2 | 6.25 - 12.5 3 | 12.5 - 25 4 | 25 - 50 5 | 50 - 100Method steps
- Visual assessment, using the Hult-Sernander-Du Rietz cover scale
Taxonomic Coverages
Geographic Coverages
Bibliographic Citations
- Halvorsen, R. 1980. Numerical analysis and successional relationships of shell-bed vegetation at Akerøya, Hvaler, SE Norway. Norw. J. Bot. Vol. 27 pp. 71-95. Oslo. ISSN 0300-1156 - http://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=PASCAL8110085421
- Source data, including field notes: Presence data for vascular plant, bryophyte and lichen species in 100 vegetation plots (each 1 m2) from 32 shell-beds at Akerøya, Hvaler, SE Norway - https://doi.org/10.5281/zenodo.6759176
- Halvorsen. (1980). Numerical analysis and successional relationships of shell-bed vegetation at Akerøya, Hvaler, SE Norway. Norwegian Journal of Botany, Vol.27, no.2 (1980), S.71–95. - https://bibsys-almaprimo.hosted.exlibrisgroup.com/permalink/f/2gq2l8/BIBSYS_ILS71644346270002201
- Numerical analysis and successional relationships of shell-bed vegetation at Akerøya, Hvaler, SE Norway. - https://doi.org/10.5281/zenodo.6759460
Contacts
Bjørn Petter Løfalloriginator
University of Oslo
Oslo
NO
email: b.p.lofall@nhm.uio.no
userId: http://orcid.org/0000-0001-9645-3394
Rune Halvorsen
metadata author
University of Oslo
Oslo
NO
email: rune.halvorsen@nhm.uio.no
userId: http://orcid.org/0000-0002-6859-7726
Rune Halvorsen
content provider
University of Oslo
Oslo
NO
email: rune.halvorsen@nhm.uio.no
userId: http://orcid.org/0000-0002-6859-7726
Rune Halvorsen
administrative point of contact
University of Oslo
Oslo
NO
email: rune.halvorsen@nhm.uio.no
userId: http://orcid.org/0000-0002-6859-7726