Megafauna, functional traits and habitat features observed at stations N3, HG-IV and S3 of the HAUSGARTEN observatory in 2016-2021
Description
Megafauna observations, functional traits and habitat features observed at stations N3, HG-IV and S3 of the HAUSGARTEN observatory in consecutive years from 2016 to 2021 based on image surveys. Data presented here are abundance (count) data for each megafauna taxon, functional trait modality and habitat feature per image. Files contain three sheets: megafauna observations (megafauna) with station (station), year of observation (year), group (group), filename (filename), image area (area), user name of each taxa (user_name), scientific name (scientific_name), accepted name (accepted_name), specification (specification), AphiaID (AphiaID) and abundance for each megafauna taxa/morphotype (abundance); functional traits (functional traits) with station (station), year of observation (year), group (group), filename (filename), image area (area), trait appreviation (trait, ZO: Zoogeography, FE: Feeding type, MO: Mobility type, SU: Substratum affinity, SI: Size class), trait modality (trait modality) and abundance for each trait modality (abundance); habitat features (habitat features) with station (station), year of observation (year), group (group), filename (filename), image area (area), habitat feature (feature) and abundance for each feature (abundance). Raw image data are available on PANGAEA (see related links).
Files
Steps to reproduce
Data within this dataset were collected with the Ocean Floor Observation System (OFOS) in 2016 - 2019 and with the Ocean Floor Observation and Bathymetry System (OFOBS) in 2020 and 2021 (see Purser et al. 2019 for technological details on OFOBS). Image surveys were conducted each year along a pre set transect with automatically triggered images every 20 seconds. For the analysis, 100 images per transect and year were selected and annotated to the lowest possible taxonomic level for megafauna density and habitat feature density using the software biigle.de. The area of each image was calculated based on the known distance (50 cm) between the three laserpoints visible in each image.
Institutions
- Alfred-Wegener-Institut Helmholtz-Zentrum fur Polar- und Meeresforschung