{"id":1206863,"name":"Whale Biomass (tonnes C)","unit":"tonnes carbon","createdAt":"2026-03-06T11:06:20.000Z","updatedAt":"2026-03-06T11:06:20.000Z","coverage":"","timespan":"1890-2001","datasetId":7535,"shortUnit":"t","columnOrder":0,"shortName":"whale_biomass__tonnes_c","catalogPath":"grapher/biodiversity/2010/whale_populations__pershing_et_al__2010/whale_populations__pershing_et_al__2010#whale_biomass__tonnes_c","type":"int","datasetName":"Whale populations (Pershing et al. 2010)","datasetVersion":"2010","nonRedistributable":false,"display":{"name":"Whale biomass","unit":"tonnes carbon","shortUnit":"t","numDecimalPlaces":0},"schemaVersion":1,"presentation":{},"source":{"id":31248,"name":"Whale populations (Pershing et al. 2010)","dataPublishedBy":"Pershing, A. J., Christensen, L. B., Record, N. R., Sherwood, G. D., & Stetson, P. B. (2010). The impact of whaling on the ocean carbon cycle: why bigger was better. PloS One, 5(8), e12444.","dataPublisherSource":"","link":"https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0012444","retrievedDate":"2019-08-28","additionalInfo":"Estimates of whale populations pre-whaling and in 2001 were published by Pershing et al. (2010), and originally sourced from Christensen (2006). See full references below.\n\nThe dates of pre-whaling differs depending on the whale species and oceanic region. This ranges from as far back as 1530 for Right whales. The most common 'pre-whaling' date in the original source was in the late 19th and early 20th century. Here we have coded all pre-whaling dates as 1890 for consistency, but it should be noted that this date varies by species. The latest date – 2001 – is consistent across species.\n\nAll estimates are of the global total."},"dimensions":{"years":{"values":[{"id":1890},{"id":2001}]},"entities":{"values":[{"id":86068,"name":"Blue whale","code":null},{"id":86075,"name":"Bowhead whale","code":null},{"id":86069,"name":"Fin whale","code":null},{"id":86073,"name":"Gray whale","code":null},{"id":352496,"name":"Humpback whale","code":null},{"id":86072,"name":"Minke whale","code":null},{"id":86074,"name":"Right whale","code":null},{"id":86071,"name":"Sei/Bryde's whale","code":null}]}},"origins":[]}