NMML Bering Sea Cetacean Survey 2000 ...

• Main Author: Waite, Janice
• Format: Dataset
• Language: English
• Published: OBIS-SEAMAP 2021
• Subjects: Occurrence,survey,cetacean,walleye pollock,trawl. acoustic,Vessels,Sightings; Observation; Occurrence; Bering Sea; Balaenoptera physalus; Megaptera novaeangliae
• Online Access: https://dx.doi.org/10.15468/4cjq7f; https://www.gbif.org/dataset/eae32224-05a2-4e3c-90f8-77b1d22a850c

Original provider: National Marine Mammal Laboratory Dataset credits: National Marine Mammal Laboratory Abstract: Visual line-transect surveys for cetaceans were conducted in the southeastern Bering Sea (SEBS) from 10 June to 3 July 2000, in association with a pollock stock assessment survey aboard the NOAA ship Miller Freeman. Observers scanned for cetaceans with 25x (Big Eye) binoculars from the flying bridge (platform height = 12 m) at survey speeds of 18.5-22 km h-1 (10-12 knots). Transect survey effort was 2,194 km in 2000, in a study area 158,561 km2. An additional 402 km of trackline was surveyed in 2000 while in transit to or from pollock survey way points. Fin whales ( Balaenoptera physalus ) were the most common large whale, and Dall's porpoises ( Phocoenoides dalli ) were the most common small cetacean. In the SEBS 2000, uncorrected abundance estimates were: 683 (CV = 0.32) fin whales, 102 (CV = 0.50) humpback whales ( Megaptera novaeangliae ), 1,003 (CV = 0.26) minke whales, 9,807 (CV = 0.20) ...