Table 1 Descriptions of the variables included in the benthic visual observation data.

From: Finnish inventory data of underwater marine biodiversity

Column

Description

RecordID

LajiGIS record ID or Åland ID number

intNorthFIN, intEastFIN

Coordinates in EPSG 3067

Method

Sampling method used, including the methods transect, dive, rake, aquascope, video, ROV, and video and rake combined (video + rake), as well as the category other, which includes observations with a 0.25 m2 quadrat.

transectID

Used to classify dive transects. NA indicates that the observation is not considered part of a transect.

MethodCategory

Indicates the method category as presented in the present paper as vegetation mapping or by video methods.

SamplingDesign

Numbered from 1–5, 1 = stratified random sampling, 2 = grid 100 m, 3 = grid 50 m, 4 = grid other, 5 = other than 1–4. NA values mean that sampling design is not reported.

Area

The area of the quadrat used for assessing cover, 4, 1 or 0.25m2. 99 indicates other area and NA indicates that the information was not available. Not applicable for video methods.

Date

Date in the format yyyy-mm-dd

scientificName

The species name reported at highest taxonomical precision.

verbatimIdentification

The species name reported at highest taxonomical precision, and when not available the taxonomic representation as it was originally recorded but with translations.

Cover

The estimated cover of the observed taxa. When the taxon is observed but the cover is not quantified the cell is assigned the value 9999. This concerns mainly mobile species such as fish, crustaceans, many molluscs, polychaetes, and insects, but also others. Cover is 0 when no species were recorded (verbatimIdentification = No species recorded).

LooseSurfaceSediment

Loose sediment on surfaces indicted using a scale from 0–3, where 0 = no sediment, 1 = little, 2 = moderate and 3 = abundant. NA values indicate that the sediment amount has not been quantified.

Group

Species were assigned to groups

Project

The original name of the project the data were collected in including Biodiversea, CoastNet LIFE, ECOnnect, FINMARINET, Kvarken Flada, Mapping and habitat classification of the underwater environment in Geta and Lumparn reports 15551 and 15252, Mapping marine Natura 2000 habitats in Åland53, NANNUT, Parks and Wildlife Finland, SeaCOMBO, SeaGIS 2.0, SEAmBOTH, SeaMoreEco, TOPCONS, Velmu, ÅlandSeaMap37

Source

The source where data are stored and was requested from (either LajiGIS or Åbo Akademi)