Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary
New mid-Cretaceous stable isotope (δ 18 O and δ 13 C) records of multiple planktonic foraminiferal species and coexisting coccoliths from Blake Nose (western North Atlantic) document a major depth-ecology reorganization of planktonic foraminifera. Across the Albian/Cenomanian boundary, deep-dwelling...
Published in: | Paleobiology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2010
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1666/09027.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300024337 |
id |
crcambridgeupr:10.1666/09027.1 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1666/09027.1 2024-04-28T08:30:47+00:00 Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary Ando, Atsushi Huber, Brian T. MacLeod, Kenneth G. 2010 http://dx.doi.org/10.1666/09027.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300024337 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Paleobiology volume 36, issue 3, page 357-373 ISSN 0094-8373 1938-5331 Paleontology General Agricultural and Biological Sciences Ecology Ecology, Evolution, Behavior and Systematics journal-article 2010 crcambridgeupr https://doi.org/10.1666/09027.1 2024-04-09T06:56:19Z New mid-Cretaceous stable isotope (δ 18 O and δ 13 C) records of multiple planktonic foraminiferal species and coexisting coccoliths from Blake Nose (western North Atlantic) document a major depth-ecology reorganization of planktonic foraminifera. Across the Albian/Cenomanian boundary, deep-dwelling Praeglobotruncana stephani and Rotalipora globotruncanoides adapted to living at a shallower depth, while, at the same time, the population of surface-dwelling Paracostellagerina libyca declined. Subsequently, the opportunistic species Hedbergella delrioensis shifted to a deep environment, and the deep-dwelling forms Rotalipora montsalvensis and Rotalipora reicheli first appeared. The primary paleoenvironmental cause of the observed changes in planktonic adaptive strategies is uncertain, yet their coincidence with an earliest Cenomanian cooling trend reported elsewhere implicates the importance of reduced upper-ocean stratification. Although there has been an implicit assumption that the species-specific depth habitats of fossil planktonic foraminifera were invariant through time, planktonic paleoecology is a potential variable. Accordingly, the possibility of evolutionary changes in planktonic foraminiferal depth ecology should be a primary consideration (along with other environmental parameters) in paleoceanographic interpretations of foraminiferal stable isotope data. Article in Journal/Newspaper North Atlantic Planktonic foraminifera Cambridge University Press Paleobiology 36 3 357 373 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Paleontology General Agricultural and Biological Sciences Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Paleontology General Agricultural and Biological Sciences Ecology Ecology, Evolution, Behavior and Systematics Ando, Atsushi Huber, Brian T. MacLeod, Kenneth G. Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary |
topic_facet |
Paleontology General Agricultural and Biological Sciences Ecology Ecology, Evolution, Behavior and Systematics |
description |
New mid-Cretaceous stable isotope (δ 18 O and δ 13 C) records of multiple planktonic foraminiferal species and coexisting coccoliths from Blake Nose (western North Atlantic) document a major depth-ecology reorganization of planktonic foraminifera. Across the Albian/Cenomanian boundary, deep-dwelling Praeglobotruncana stephani and Rotalipora globotruncanoides adapted to living at a shallower depth, while, at the same time, the population of surface-dwelling Paracostellagerina libyca declined. Subsequently, the opportunistic species Hedbergella delrioensis shifted to a deep environment, and the deep-dwelling forms Rotalipora montsalvensis and Rotalipora reicheli first appeared. The primary paleoenvironmental cause of the observed changes in planktonic adaptive strategies is uncertain, yet their coincidence with an earliest Cenomanian cooling trend reported elsewhere implicates the importance of reduced upper-ocean stratification. Although there has been an implicit assumption that the species-specific depth habitats of fossil planktonic foraminifera were invariant through time, planktonic paleoecology is a potential variable. Accordingly, the possibility of evolutionary changes in planktonic foraminiferal depth ecology should be a primary consideration (along with other environmental parameters) in paleoceanographic interpretations of foraminiferal stable isotope data. |
format |
Article in Journal/Newspaper |
author |
Ando, Atsushi Huber, Brian T. MacLeod, Kenneth G. |
author_facet |
Ando, Atsushi Huber, Brian T. MacLeod, Kenneth G. |
author_sort |
Ando, Atsushi |
title |
Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary |
title_short |
Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary |
title_full |
Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary |
title_fullStr |
Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary |
title_full_unstemmed |
Depth-habitat reorganization of planktonic foraminifera across the Albian/Cenomanian boundary |
title_sort |
depth-habitat reorganization of planktonic foraminifera across the albian/cenomanian boundary |
publisher |
Cambridge University Press (CUP) |
publishDate |
2010 |
url |
http://dx.doi.org/10.1666/09027.1 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0094837300024337 |
genre |
North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Planktonic foraminifera |
op_source |
Paleobiology volume 36, issue 3, page 357-373 ISSN 0094-8373 1938-5331 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1666/09027.1 |
container_title |
Paleobiology |
container_volume |
36 |
container_issue |
3 |
container_start_page |
357 |
op_container_end_page |
373 |
_version_ |
1797588530640191488 |