Counts of seabirds, marine mammals and other megafauna during POLARSTERN cruise PS83 (ANT-XXIX/10)

DOI

Please note: Abstract created by PANGAEA data editor using Jungblut et al. (2017). Marine top predators (seabirds, marine mammals and other megafauna) were counted during POLARSTERN cruise PS83 (ANT-XXIX/10) passing the east Atlantic from Cape Town to Bremerhaven in spring 2014. Continuous half-hour transect counts were conducted by two observers from the bridge, situated approximately 18 meters above sea level, throughout daylight hours and while the vessel maintained its traveling speed (see Joiris & Falck 2011). Due to the width of the bridge, observations were limited to a 90° angle from the bow to one side, as it was impractical for one observer to simultaneously cover both sides. Species were initially identified with the naked eye and confirmed using binoculars (8 – 10 times magnification). Photos were used in retrospect to help identify rare or hard to classify specimens. Individuals following or circling around the ship were only counted once in a 30 min interval (i.e. during one 'transect count'). Water temperature and salinity were continuously and automatically recorded by a thermo-salinometer installed at the keel of the Polarstern (approximately 10 meters below sea level). Depth data were obtained either from the vessel's echosounder or hydrosweep. Data extraction was carried out from the DShip data system on board.

Identifier
DOI https://doi.org/10.1594/PANGAEA.868991
Related Identifier IsPartOf https://doi.org/10.1594/PANGAEA.868992
Related Identifier IsSupplementTo https://doi.org/10.1016/j.dsr2.2017.04.005
Related Identifier References https://doi.org/10.2312/BzPM_0683_2014
Related Identifier References https://doi.org/10.1007/s00300-010-0910-0
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.868991
Provenance
Creator Jungblut, Simon ORCID logo; Nachtsheim, Dominik A ORCID logo; Boos, Karin; Joiris, Claude R
Publisher PANGAEA
Publication Year 2017
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 86495 data points
Discipline Earth System Research
Spatial Coverage (-20.999W, -33.050S, 17.112E, 53.796N); Atlantic, transit cruise
Temporal Coverage Begin 2014-03-09T04:50:00Z
Temporal Coverage End 2014-04-12T14:50:00Z