Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum
The application of transfer functions on fossil assemblages to reconstruct past environments is fundamentally based on the assumption of stable environmental niches in both space and time. We quantitatively test this assumption for six dominant planktic foraminiferal species (Globigerinoides ruber (...
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2017
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Online Access: | https://hdl.handle.net/1983/cc857480-071e-44db-9784-1e25936cb034 https://research-information.bris.ac.uk/en/publications/cc857480-071e-44db-9784-1e25936cb034 https://doi.org/10.1002/2016PA002964 https://research-information.bris.ac.uk/ws/files/103112949/Waterson_et_al_2017_Paleoceanography.pdf https://research-information.bris.ac.uk/ws/files/103112952/palo20389_sup_0001_2016PA002964_fsI.pdf |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/cc857480-071e-44db-9784-1e25936cb034 2024-05-19T07:44:08+00:00 Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum Waterson, Amy Edgar, Kirsty Schmidt, Daniela Valdes, Paul 2017-02-09 application/pdf https://hdl.handle.net/1983/cc857480-071e-44db-9784-1e25936cb034 https://research-information.bris.ac.uk/en/publications/cc857480-071e-44db-9784-1e25936cb034 https://doi.org/10.1002/2016PA002964 https://research-information.bris.ac.uk/ws/files/103112949/Waterson_et_al_2017_Paleoceanography.pdf https://research-information.bris.ac.uk/ws/files/103112952/palo20389_sup_0001_2016PA002964_fsI.pdf eng eng https://research-information.bris.ac.uk/en/publications/cc857480-071e-44db-9784-1e25936cb034 info:eu-repo/semantics/openAccess Waterson , A , Edgar , K , Schmidt , D & Valdes , P 2017 , ' Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum ' , Paleoceanography , vol. 32 , no. 1 , pp. 74-89 . https://doi.org/10.1002/2016PA002964 planktic foraminifera ecological niche model niche stability Last Glacial Maximum article 2017 ftubristolcris https://doi.org/10.1002/2016PA002964 2024-04-23T23:53:50Z The application of transfer functions on fossil assemblages to reconstruct past environments is fundamentally based on the assumption of stable environmental niches in both space and time. We quantitatively test this assumption for six dominant planktic foraminiferal species (Globigerinoides ruber (pink), G. ruber (white), Trilobatus sacculifer, Truncorotalia truncatulinoides, Globigerina bulloides and Neogloboquadrina pachyderma) by contrasting reconstructions of species realised and optimum distributions in the modern and during the Last Glacial Maximum (LGM) using an ecological niche model (ENM; MaxEnt) and ordination framework. Global ecological niche models calibrated in the modern ocean have high predictive performance when projected to the LGM for sub-polar and polar species, indicating that the environmental niches of these taxa are largely stable at the global scale across this interval. In contrast, ENM’s had much poorer predictive performance for the optimal niche of tropical-dwelling species, T. sacculifer and G. ruber (pink). This finding is supported by independent metrics of niche margin change, suggesting that niche stability in environmental space was greatest for (sub)polar species, with greatest expansion of the niche observed for tropical species. We find that globally calibrated ENMs showed good predictions of species occurrences globally, whereas models calibrated in either the Pacific or Atlantic Oceans only and then projected globally performed less well for T. sacculifer. Our results support the assumption of environmental niche stability over the last ~21,000 years for most of our focal planktic foraminiferal species and thus, the application of transfer function techniques for palaeoenvironmental reconstruction during this interval. However, the lower observed niche stability for (sub)tropical taxa T. sacculifer and G. ruber (pink) suggests that (sub)tropical temperatures could be underestimated in the glacial ocean with the strongest effect in the equatorial Atlantic where both ... Article in Journal/Newspaper Neogloboquadrina pachyderma University of Bristol: Bristol Research Paleoceanography 32 1 74 89 |
institution |
Open Polar |
collection |
University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
topic |
planktic foraminifera ecological niche model niche stability Last Glacial Maximum |
spellingShingle |
planktic foraminifera ecological niche model niche stability Last Glacial Maximum Waterson, Amy Edgar, Kirsty Schmidt, Daniela Valdes, Paul Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum |
topic_facet |
planktic foraminifera ecological niche model niche stability Last Glacial Maximum |
description |
The application of transfer functions on fossil assemblages to reconstruct past environments is fundamentally based on the assumption of stable environmental niches in both space and time. We quantitatively test this assumption for six dominant planktic foraminiferal species (Globigerinoides ruber (pink), G. ruber (white), Trilobatus sacculifer, Truncorotalia truncatulinoides, Globigerina bulloides and Neogloboquadrina pachyderma) by contrasting reconstructions of species realised and optimum distributions in the modern and during the Last Glacial Maximum (LGM) using an ecological niche model (ENM; MaxEnt) and ordination framework. Global ecological niche models calibrated in the modern ocean have high predictive performance when projected to the LGM for sub-polar and polar species, indicating that the environmental niches of these taxa are largely stable at the global scale across this interval. In contrast, ENM’s had much poorer predictive performance for the optimal niche of tropical-dwelling species, T. sacculifer and G. ruber (pink). This finding is supported by independent metrics of niche margin change, suggesting that niche stability in environmental space was greatest for (sub)polar species, with greatest expansion of the niche observed for tropical species. We find that globally calibrated ENMs showed good predictions of species occurrences globally, whereas models calibrated in either the Pacific or Atlantic Oceans only and then projected globally performed less well for T. sacculifer. Our results support the assumption of environmental niche stability over the last ~21,000 years for most of our focal planktic foraminiferal species and thus, the application of transfer function techniques for palaeoenvironmental reconstruction during this interval. However, the lower observed niche stability for (sub)tropical taxa T. sacculifer and G. ruber (pink) suggests that (sub)tropical temperatures could be underestimated in the glacial ocean with the strongest effect in the equatorial Atlantic where both ... |
format |
Article in Journal/Newspaper |
author |
Waterson, Amy Edgar, Kirsty Schmidt, Daniela Valdes, Paul |
author_facet |
Waterson, Amy Edgar, Kirsty Schmidt, Daniela Valdes, Paul |
author_sort |
Waterson, Amy |
title |
Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum |
title_short |
Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum |
title_full |
Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum |
title_fullStr |
Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum |
title_full_unstemmed |
Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum |
title_sort |
quantifying the stability of planktic foraminiferal physical niches between the holocene and last glacial maximum |
publishDate |
2017 |
url |
https://hdl.handle.net/1983/cc857480-071e-44db-9784-1e25936cb034 https://research-information.bris.ac.uk/en/publications/cc857480-071e-44db-9784-1e25936cb034 https://doi.org/10.1002/2016PA002964 https://research-information.bris.ac.uk/ws/files/103112949/Waterson_et_al_2017_Paleoceanography.pdf https://research-information.bris.ac.uk/ws/files/103112952/palo20389_sup_0001_2016PA002964_fsI.pdf |
genre |
Neogloboquadrina pachyderma |
genre_facet |
Neogloboquadrina pachyderma |
op_source |
Waterson , A , Edgar , K , Schmidt , D & Valdes , P 2017 , ' Quantifying the stability of planktic foraminiferal physical niches between the Holocene and Last Glacial Maximum ' , Paleoceanography , vol. 32 , no. 1 , pp. 74-89 . https://doi.org/10.1002/2016PA002964 |
op_relation |
https://research-information.bris.ac.uk/en/publications/cc857480-071e-44db-9784-1e25936cb034 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2016PA002964 |
container_title |
Paleoceanography |
container_volume |
32 |
container_issue |
1 |
container_start_page |
74 |
op_container_end_page |
89 |
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1799483896670191616 |