Heatmaps of hours per day with acoustic detections by year from 2008–2018.

a) bowhead whales and b) beluga whales. Timing of melt and freeze up transitions by year are shown as white circles. Black horizontal lines indicate missing data. Note that there were no data for the entirety of 2015 so that year is not shown.

Bibliographic Details
Main Authors:	Kathleen M. Stafford (11037333), John J. Citta (11037336), Stephen R. Okkonen (11037339), Jinlun Zhang (11037342)
Format:	Still Image
Language:	unknown
Published:	2021
Subjects:	Cell Biology Molecular Biology Evolutionary Biology Ecology Inorganic Chemistry Environmental Sciences not elsewhere classified Biological Sciences not elsewhere classified sea ice melt-out DBO Region 6. Acoustic data BIOMAS Bering Sea transport September 2008- July 2014 Beaufort Sea beluga whale vocalizations whale occurrence bowhead whales 8 DBO regions beluga whale DBO 6 region beluga whale migration times September 2016- October 2018 Beaufort shelfbreak jet Bering Sea Beluga Beluga whale Beluga* Sea ice
Online Access:	https://doi.org/10.1371/journal.pone.0253929.g004

Description
Summary:	a) bowhead whales and b) beluga whales. Timing of melt and freeze up transitions by year are shown as white circles. Black horizontal lines indicate missing data. Note that there were no data for the entirety of 2015 so that year is not shown.