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

Bjørn Petter Løfall

doi:10.15468/p864ew

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 2024-12-15.

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 1979

Sampling

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 - 100

Method 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 Løfall
originator
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