Publication Date:
2024-04-11
Description:
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 ANT-XXVIII/5 crossing the Atlantic from Punta Arenas to Bremerhaven in spring 2012. 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.
Keywords:
Albatrosses; Alca torda; Alcidae sp.; Anous stolidus; ANT-XXVIII/5; Arctocephalus pusillus; Atlantic, transit cruise; Balaenoptera acutorostrata; Balaenoptera borealis; Balaenoptera brydei; Balaenoptera physalus; Beaked whale; Branta bernicla; Bulweria bulwerii; Calonectris diomedea; Calonectris edwardsii; Caretta caretta; Catharacta antarctica; Catharacta maccormicki; Catharacta skua; Chelonia mydas; Chlidonias niger; CT; Daption capense; DATE/TIME; Delphinus delphis; Depth, bathymetric; Dermochelys coriacea; Diomedea dabbenena; Diomedea epomophora; Diomedea exulans; Diomedea sanfordi; Diomedea sp.; Distance; Dolphins, unidentified; Eudyptes chrysocome; Fluorescence, chlorophyll; Fregata aquila; Fregata magnificens; Fregetta grallaria; Fulmarus glacialis; Garrodia nereis; Gavia arctica; Globicephala macrorhynchus; Globicephala melas; Globicephala sp.; Grampus griseus; Gulls; Hammerhead shark; Hydrobates pelagicus; Identification; Lagenorhynchus albirostris; Lagenorhynchus australis; Lagenorhynchus sp.; Larus argentatus; Larus canus; Larus dominicanus; Larus fuscus; Larus marinus; Larus melanocephalus; Larus michahellis; Larus minutus; Larus ridibundus; LATITUDE; LONGITUDE; Macronectes giganteus; Macronectes sp.; Manta sp.; Megaptera novaeangliae; Mola mola; Morus bassanus; Oceanites oceanicus; Oceanodroma castro; Oceanodroma leucorhoa; Orcinus orca; Pachyptila sp.; Pelagodroma marina; Pelecanoides magellani; Pelecanoides sp.; Penguins; Petrels; Phaethon aethereus; Phaethon lepturus; Phalacrocorax capensis; Phalacrocorax carbo; Phalacrocorax coronatus; Phalaropus fulicarius; Phocoena phocoena; Physeter catodon; Polarstern; Procellaria aequinoctialis; Procellaria conspicillata; PS79; PS79/5-track; Pterodroma arminjoniana; Pterodroma feae; Pterodroma incerta; Pterodroma macroptera; Pterodroma mollis; Puffinus assimilis; Puffinus baroli; Puffinus gravis; Puffinus griseus; Puffinus lherminieri; Puffinus mauretanicus; Puffinus puffinus; Ray; Rissa tridactyla; Salinity; Seabirds, unidentified; Sea turtles; Shark; Shearwaters; Skuas; Speed; Spheniscus magellanicus; Stenella clymene; Stenella coeruleoalba; Stenella frontalis; Stenella longirostris; Steno bredanensis; Stercorarius longicaudus; Stercorarius parasiticus; Stercorarius pomarinus; Sterna anaethetus; Sterna arctica; Sterna dougallii; Sterna fuscata; Sterna hirundo; Sterna sandvicensis; Storm-petrels; Sula capensis; Sula leucogaster; Sula sula; Temperature, water; Terns; Thalassarche cauta; Thalassarche chlororhynchos; Thalassarche melanophris; Thalasseus bergii; Thalasseus maximus; Tropicbirds; Tursiops truncatus; Underway cruise track measurements; Uria aalge; Whale, unidentified; Xema sabini; Ziphius cavirostris; Zone
Type:
Dataset
Format:
text/tab-separated-values, 92206 data points
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