Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic
The paleoecology of Cretaceous planktic foraminifera during the Late Cenomanian to Coniacian period (~95-86 Ma) remains controversial since much of the tropical marine record is preserved as chalk and limestone with uncertain geochemical overprints. Here we present delta13C and delta18O data from si...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.688711 2024-09-15T18:23:52+00:00 Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic Bornemann, André Norris, Richard D MEDIAN LATITUDE: 12.063508 * MEDIAN LONGITUDE: -57.885325 * SOUTH-BOUND LATITUDE: 2.500000 * WEST-BOUND LONGITUDE: -78.000000 * NORTH-BOUND LATITUDE: 27.000000 * EAST-BOUND LONGITUDE: -45.000000 * DATE/TIME START: 2003-01-15T00:00:00 * DATE/TIME END: 2003-02-16T00:00:00 2007 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.688711 https://doi.org/10.1594/PANGAEA.688711 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.688711 https://doi.org/10.1594/PANGAEA.688711 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Bornemann, André; Norris, Richard D (2007): Size-related stable isotope changes in Late Cretaceous planktic foraminifera: Implications for paleoecology and photosymbiosis. Marine Micropaleontology, 65(1-2), 32-42, https://doi.org/10.1016/j.marmicro.2007.05.005 207-1257 207-1259 BC BC061 Box corer Ceara Rise COMPCORE Composite Core Joides Resolution KN11002 Knorr KNORR110,43 KNR110 Leg207 Little Bahama Bank North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer dataset publication series 2007 ftpangaea https://doi.org/10.1594/PANGAEA.68871110.1016/j.marmicro.2007.05.005 2024-08-21T00:02:25Z The paleoecology of Cretaceous planktic foraminifera during the Late Cenomanian to Coniacian period (~95-86 Ma) remains controversial since much of the tropical marine record is preserved as chalk and limestone with uncertain geochemical overprints. Here we present delta13C and delta18O data from sieve size fractions of monospecific samples of exceptionally well preserved planktic foraminifera recovered during Ocean Drilling Program Leg 207 (Demerara Rise, western tropical Atlantic). Our results suggest that all species studied (Hedbergella delrioensis, Heterohelix globulosa, Marginotruncana sinuosa, Whiteinella baltica) grew primarily in surface waters and did not change their depth habitat substantially during their life cycle. Comparison of size-related ontogenetic trends in delta13C in Cretaceous and modern foraminifera further suggests that detection of dinoflagellate photosymbiosis using delta13C is confounded by physiological effects during the early stages of foraminifer growth, raising doubts about previous interpretations of photosymbiosis in small foraminifera species. We propose that obligate photosymbiosis involving dinoflagellates may not have evolved until the Campanian or Maastrichtian since our survey of Cenomanian-Coniacian species does not find the delta18O and delta13C size-related trends observed in modern foraminifer-dinoflagellate symbioses. Other/Unknown Material North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-78.000000,-45.000000,27.000000,2.500000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
207-1257 207-1259 BC BC061 Box corer Ceara Rise COMPCORE Composite Core Joides Resolution KN11002 Knorr KNORR110,43 KNR110 Leg207 Little Bahama Bank North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer |
spellingShingle |
207-1257 207-1259 BC BC061 Box corer Ceara Rise COMPCORE Composite Core Joides Resolution KN11002 Knorr KNORR110,43 KNR110 Leg207 Little Bahama Bank North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer Bornemann, André Norris, Richard D Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic |
topic_facet |
207-1257 207-1259 BC BC061 Box corer Ceara Rise COMPCORE Composite Core Joides Resolution KN11002 Knorr KNORR110,43 KNR110 Leg207 Little Bahama Bank North Atlantic Ocean Ocean Drilling Program ODP PC Piston corer |
description |
The paleoecology of Cretaceous planktic foraminifera during the Late Cenomanian to Coniacian period (~95-86 Ma) remains controversial since much of the tropical marine record is preserved as chalk and limestone with uncertain geochemical overprints. Here we present delta13C and delta18O data from sieve size fractions of monospecific samples of exceptionally well preserved planktic foraminifera recovered during Ocean Drilling Program Leg 207 (Demerara Rise, western tropical Atlantic). Our results suggest that all species studied (Hedbergella delrioensis, Heterohelix globulosa, Marginotruncana sinuosa, Whiteinella baltica) grew primarily in surface waters and did not change their depth habitat substantially during their life cycle. Comparison of size-related ontogenetic trends in delta13C in Cretaceous and modern foraminifera further suggests that detection of dinoflagellate photosymbiosis using delta13C is confounded by physiological effects during the early stages of foraminifer growth, raising doubts about previous interpretations of photosymbiosis in small foraminifera species. We propose that obligate photosymbiosis involving dinoflagellates may not have evolved until the Campanian or Maastrichtian since our survey of Cenomanian-Coniacian species does not find the delta18O and delta13C size-related trends observed in modern foraminifer-dinoflagellate symbioses. |
format |
Other/Unknown Material |
author |
Bornemann, André Norris, Richard D |
author_facet |
Bornemann, André Norris, Richard D |
author_sort |
Bornemann, André |
title |
Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic |
title_short |
Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic |
title_full |
Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic |
title_fullStr |
Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic |
title_full_unstemmed |
Size-related stable isotope changes in Late Cretaceous and Recent planktic foraminifera from the western tropical Atlantic |
title_sort |
size-related stable isotope changes in late cretaceous and recent planktic foraminifera from the western tropical atlantic |
publisher |
PANGAEA |
publishDate |
2007 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.688711 https://doi.org/10.1594/PANGAEA.688711 |
op_coverage |
MEDIAN LATITUDE: 12.063508 * MEDIAN LONGITUDE: -57.885325 * SOUTH-BOUND LATITUDE: 2.500000 * WEST-BOUND LONGITUDE: -78.000000 * NORTH-BOUND LATITUDE: 27.000000 * EAST-BOUND LONGITUDE: -45.000000 * DATE/TIME START: 2003-01-15T00:00:00 * DATE/TIME END: 2003-02-16T00:00:00 |
long_lat |
ENVELOPE(-78.000000,-45.000000,27.000000,2.500000) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Bornemann, André; Norris, Richard D (2007): Size-related stable isotope changes in Late Cretaceous planktic foraminifera: Implications for paleoecology and photosymbiosis. Marine Micropaleontology, 65(1-2), 32-42, https://doi.org/10.1016/j.marmicro.2007.05.005 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.688711 https://doi.org/10.1594/PANGAEA.688711 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.68871110.1016/j.marmicro.2007.05.005 |
_version_ |
1810464137305653248 |