Response of Siliceous Marine Organisms to the Permian‐Triassic Climate Crisis 
Based on New Findings From Central Spitsbergen, Svalbard

Foster, W. J.; Asatryan, Gayane; Rauzi, S.; Botting, J. P.; Buchwald, S. Z.; Lazarus, D. B.; Isson, T.; Renaudie, J.; Kiessling, W.

doi:10.1029/2023PA004766

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Response of Siliceous Marine Organisms to the Permian‐Triassic Climate Crisis Based on New Findings From Central Spitsbergen, Svalbard

Authors

Foster, W. J.
External Organizations;

/persons/resource/asatryan

Asatryan, Gayane
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Rauzi, S.
External Organizations;

Botting, J. P.
External Organizations;

Buchwald, S. Z.
External Organizations;

Lazarus, D. B.
External Organizations;

Isson, T.
External Organizations;

Renaudie, J.
External Organizations;

Kiessling, W.
External Organizations;

External Ressource

No external resources are shared

Fulltext (public)

There are no public fulltexts stored in GFZpublic

Supplementary Material (public)

There is no public supplementary material available

Citation

Foster, W. J., Asatryan, G., Rauzi, S., Botting, J. P., Buchwald, S. Z., Lazarus, D. B., Isson, T., Renaudie, J., Kiessling, W. (2023): Response of Siliceous Marine Organisms to the Permian‐Triassic Climate Crisis Based on New Findings From Central Spitsbergen, Svalbard. - Paleoceanography and Paleoclimatology, 38.
https://doi.org/10.1029/2023PA004766

Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5025425

Abstract

Siliceous marine ecosystems play a critical role in shaping the Earth's climate system by influencing rates of organic carbon burial and marine authigenic clay formation (i.e., reverse weathering). The ecological demise of silicifying organisms associated with the Permian-Triassic mass extinction is postulated to have elevated marine authigenic clay formation rates, resulting in a prolonged greenhouse climate during the Early Triassic. Yet, our understanding of the response of siliceous marine organisms during this critical interval is poor. Whilst radiolarians experienced the strongest diversity loss in their evolutionary history and perhaps also the greatest population decline of silica-secreting organisms during this event, only a small number of Griesbachian (post-extinction) localities that record siliceous organisms are known. Here, we report newly discovered latest Changhsingian to early Griesbachian (Clarkina meishanensis - Hindeodus parvus Zone) radiolarians and siliceous sponge spicules from Svalbard. This fauna documents the survival of a low-diversity radiolarian assemblage alongside stem-group hexactinellid sponges making this the first described account of post-extinction silica-secreting organisms from the Permian/Triassic boundary in a shallow marine shelf environment and a mid-northern paleolatitudinal setting. Our findings indicate that latitudinal diversity gradients for silica-secreting organisms following the mass extinction were significantly altered, and that silica productivity was restricted to high latitude and deep water thermal refugia. This result has potential to further shape our understanding of changes in marine dissolved silica levels and in turn rates of reverse weathering, with implications for our understanding of carbon cycle dynamics during this interval.