No place to retreat; heavy extinction and delayed recovery on a Pacific guyot during the Paleocene-Eocene Thermal Maximum

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doi: 10.1130/G36379.1
Author(s): Yamaguchi, Tatsuhiko; Norris, Richard D.
Author Affiliation(s): Primary:
Kochi University, Center for Advanced Research for Marine Core, Kochi, Japan
Other:
Scripps Institution of Oceanography, United States
Volume Title: Geology (Boulder)
Source: Geology (Boulder), 43(5), p.443-446. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 CODEN: GLGYBA
Note: In English. GSA Data Repository item 2015153. 34 refs.; illus.
Summary: Modern global change threatens alpine ecosystems by forcing species to migrate to higher elevations and potentially eliminating alpine habitat altogether. Here we show that an analogous restriction of suitable habitat operates on submarine mountains. During the Paleocene-Eocene Thermal Maximum (PETM, ca. 55.96 Ma), ostracodes underwent local extinction on the crest of Allison Guyot in the central Pacific Ocean, which lost 64% of its ostracode species richness (14 species reduced to three species) and as much as 94% of ostracode abundance for ∼1.1 m.y., before recolonization rebuilt biodiversity and abundance over the next 200 k.y. Biotic changes may reflect an increase in current speeds, acidification, and a decrease in food supply owing to a temperature-driven increase in metabolic rates. Notably, continental margin ostracodes also underwent extinction during the PETM (25%-38% loss) but, unlike Allison Guyot faunas, could quickly repopulate the continental slope. The absence of refugia for isolated seamounts prolonged the reduction in biodiversity initiated by the PETM, a pattern that may be expected for modern seamount faunas in an era of future global change.
Year of Publication: 2015
Research Program: ODP Ocean Drilling Program
Key Words: 10 Paleontology, Invertebrate; Allison Guyot; Arthropoda; Biostratigraphy; Cenozoic; Climate change; Climate effects; Cores; Crustacea; East Pacific; Extinction; Invertebrata; Leg 143; Mandibulata; Marine sediments; Microfossils; Mid-Pacific Mountains; North Pacific; Northeast Pacific; ODP Site 865; Ocean Drilling Program; Ostracoda; Pacific Ocean; Paleocene-Eocene Thermal Maximum; Paleoclimatology; Paleoecology; Paleogene; Paleotemperature; Sediments; Species diversity; Tertiary
Coordinates: N182624 N182626 W1793320 W1793321
Record ID: 2015039975
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States, Reference includes data supplied by the Geological Society of America
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100 1 |a Yamaguchi, Tatsuhiko  |u Kochi University, Center for Advanced Research for Marine Core, Kochi 
245 1 0 |a No place to retreat; heavy extinction and delayed recovery on a Pacific guyot during the Paleocene-Eocene Thermal Maximum 
300 |a p. 443-446 
500 |a In English. GSA Data Repository item 2015153. 34 refs. 
500 |a Research program: ODP Ocean Drilling Program 
500 |a Affiliation: Kochi University, Center for Advanced Research for Marine Core; Kochi; JPN; Japan 
500 |a Affiliation: Scripps Institution of Oceanography; ; USA; United States 
500 |a Source note: Geology (Boulder), 43(5), p.443-446. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 
500 |a Publication type: journal article 
504 |b 34 refs. 
510 3 |a GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States, Reference includes data supplied by the Geological Society of America 
520 |a Modern global change threatens alpine ecosystems by forcing species to migrate to higher elevations and potentially eliminating alpine habitat altogether. Here we show that an analogous restriction of suitable habitat operates on submarine mountains. During the Paleocene-Eocene Thermal Maximum (PETM, ca. 55.96 Ma), ostracodes underwent local extinction on the crest of Allison Guyot in the central Pacific Ocean, which lost 64% of its ostracode species richness (14 species reduced to three species) and as much as 94% of ostracode abundance for ∼1.1 m.y., before recolonization rebuilt biodiversity and abundance over the next 200 k.y. Biotic changes may reflect an increase in current speeds, acidification, and a decrease in food supply owing to a temperature-driven increase in metabolic rates. Notably, continental margin ostracodes also underwent extinction during the PETM (25%-38% loss) but, unlike Allison Guyot faunas, could quickly repopulate the continental slope. The absence of refugia for isolated seamounts prolonged the reduction in biodiversity initiated by the PETM, a pattern that may be expected for modern seamount faunas in an era of future global change. 
650 7 |a Arthropoda  |2 georeft 
650 7 |a Biostratigraphy  |2 georeft 
650 7 |a Cenozoic  |2 georeft 
650 7 |a Climate change  |2 georeft 
650 7 |a Climate effects  |2 georeft 
650 7 |a Cores  |2 georeft 
650 7 |a Crustacea  |2 georeft 
650 7 |a Extinction  |2 georeft 
650 7 |a Mandibulata  |2 georeft 
650 7 |a Marine sediments  |2 georeft 
650 7 |a Microfossils  |2 georeft 
650 7 |a Ocean Drilling Program  |2 georeft 
650 7 |a Ostracoda  |2 georeft 
650 7 |a Paleocene-Eocene Thermal Maximum  |2 georeft 
650 7 |a Paleoclimatology  |2 georeft 
650 7 |a Paleoecology  |2 georeft 
650 7 |a Paleogene  |2 georeft 
650 7 |a Paleotemperature  |2 georeft 
650 7 |a Sediments  |2 georeft 
650 7 |a Species diversity  |2 georeft 
650 7 |a Tertiary  |2 georeft 
651 7 |a East Pacific  |2 georeft 
651 7 |a Leg 143  |2 georeft 
651 7 |a Mid-Pacific Mountains  |2 georeft 
651 7 |a North Pacific  |2 georeft 
651 7 |a Northeast Pacific  |2 georeft 
651 7 |a ODP Site 865  |2 georeft 
651 7 |a Pacific Ocean  |2 georeft 
653 |a Allison Guyot 
653 |a Invertebrata 
700 1 |a Norris, Richard D.,  |u Scripps Institution of Oceanography 
773 0 |t Geology (Boulder)  |d Boulder, CO : Geological Society of America (GSA), Mar. , 27 2015  |x 0091-7613  |y GLGYBA  |n Geology (Boulder), 43(5), p.443-446. Publisher: Geological Society of America (GSA), Boulder, CO, United States. ISSN: 0091-7613 Publication type: journal article  |g Vol. 43, no. 5  |h illus. 
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