{"id": 1206694, "name": "Share of marine mammal populations decreasing", "unit": "%", "createdAt": "2026-03-06T11:06:12.000Z", "updatedAt": "2026-03-06T11:06:12.000Z", "coverage": "", "timespan": "2021-2021", "datasetId": 7488, "shortUnit": "%", "columnOrder": 0, "shortName": "share_of_marine_mammal_populations_decreasing", "catalogPath": "grapher/biodiversity/2020-12-01/change_in_marine_mammal_populations__duarte_et_al__2020/change_in_marine_mammal_populations__duarte_et_al__2020#share_of_marine_mammal_populations_decreasing", "type": "float", "datasetName": "Change in marine mammal populations (Duarte et al. 2020)", "datasetVersion": "2020-12-01", "nonRedistributable": false, "display": {"name": "Decreasing", "unit": "%", "shortUnit": "%"}, "schemaVersion": 1, "presentation": {}, "source": {"id": 31196, "name": "Duarte et al. (2020). Rebuilding marine life. Nature.", "dataPublishedBy": "Duarte, C. M., Agusti, S., Barbier, E., Britten, G. L., Castilla, J. C., Gattuso, J. P., ... & Worm, B. (2020). Rebuilding marine life. Nature, 580(7801), 39-51.", "dataPublisherSource": "", "link": "https://www.nature.com/articles/s41586-020-2146-7", "retrievedDate": "2026-03-06", "additionalInfo": "Duarte et al. (2020) compiled the share of marine mammal populations increasing, decreasing or showing no change across the world's oceans based on original studies from Lortze et al. (2017); and Magera et al. (2013).\n\nLotze, H. K., Mills Flemming, J., Magera, A. Critical factors to marine mammal recovery. Conservation Biology 31, 1301-1311 (2017).\n\nMagera, A. M. et al. Recovery trends in marine mammal populations. PLoS ONE 8(10): e77908 (2013)."}, "dimensions": {"years": {"values": [{"id": 2021}]}, "entities": {"values": [{"id": 37806, "name": "Indian Ocean", "code": null}, {"id": 233238, "name": "Northeast Atlantic", "code": null}, {"id": 180187, "name": "Northeast Pacific", "code": null}, {"id": 233239, "name": "Northwest Atlantic", "code": null}, {"id": 180186, "name": "Northwest Pacific", "code": null}, {"id": 37805, "name": "South Atlantic", "code": null}, {"id": 36481, "name": "South Pacific", "code": null}, {"id": 233240, "name": "Southern Ocean", "code": null}]}}, "origins": []}