Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies
Ciner, Burcu (Balikesir Author) The oxygen isotope ratios (delta O-18) preserved in marine sediments have been widely used to reconstruct past ocean temperatures. However, there remain significant uncertainties associated with this method, owing to assumptions about the delta O-18 of ancient seawate...
Published in: | Science Bulletin |
---|---|
Main Authors: | , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier Science Bv
2016
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.12462/8251 https://doi.org/10.1007/s11434-015-0921-x |
id |
ftbalikesiruniv:oai:dspace.balikesir.edu.tr:20.500.12462/8251 |
---|---|
record_format |
openpolar |
spelling |
ftbalikesiruniv:oai:dspace.balikesir.edu.tr:20.500.12462/8251 2023-05-15T17:03:33+02:00 Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies Ciner, Burcu Wang, Yang Parker, William Mühendislik-Mimarlık Fakültesi 2016 application/pdf https://hdl.handle.net/20.500.12462/8251 https://doi.org/10.1007/s11434-015-0921-x eng eng Elsevier Science Bv 10.1007/s11434-015-0921-x Science Bulletin Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı 2095-9273 2095-9281 https://doi.org/10.1007/s11434-015-0921-x https://hdl.handle.net/20.500.12462/8251 61 1 92 104 info:eu-repo/semantics/openAccess Oxygen İsotopes Phosphate Cetacean Whales Teeth Bones article 2016 ftbalikesiruniv https://doi.org/20.500.12462/8251 https://doi.org/10.1007/s11434-015-0921-x 2022-04-27T05:34:15Z Ciner, Burcu (Balikesir Author) The oxygen isotope ratios (delta O-18) preserved in marine sediments have been widely used to reconstruct past ocean temperatures. However, there remain significant uncertainties associated with this method, owing to assumptions about the delta O-18 of ancient seawater which affects the temperature inferred from sediment delta O-18 records. In this study, oxygen isotope compositions of phosphate in teeth and bones from five different modern cetacean species, including sperm whale, pygmy sperm whale, short-finned pilot whale, killer whale, and Cuvier's beaked whale, and three fossil whales were determined. The data were used to assess whether the oxygen isotope ratios of biogenic phosphate (delta O-18(p)) from cetaceans are a reliable proxy for the oxygen isotopic composition of ocean water (delta O-18(w)). The delta O-18(p) values of modern cetaceans range from 15.5 parts per thousand to 21.3 parts per thousand, averaging (19.6 parts per thousand +/- 0.8 parts per thousand) (n = 136). Using a greatly expanded global cetacean delta O-18(p) dataset, the following regression equation is derived for cetaceans: delta O-18(w) = 0.95317 (+/- 0.03293) delta O-18(p) - 17.971 (+/- 0.605), r = 0.97253. The new equation, when applied to fossil teeth and bones, yielded reasonable estimates of ancient seawater delta O-18(w) values. Intra-tooth isotopic variations were observed within individual teeth. Among the selected species, the killer whale (O.orca) has the lowest delta O-18(p) values and the largest intra-tooth delta O-18(p) variation, reflecting its habitat preference and migratory behavior. The results show that oxygen isotope analysis of phosphate in cetacean teeth and dense ear bones provides a useful tool for reconstructing the oxygen isotopic composition of seawater and for examining environmental preferences (including migratory behavior) of both modern and ancient whales. S National Science Foundation EAR-0824628 EAR-0517806 EAR-0236357 DMR-1157490 Article in Journal/Newspaper Killer Whale Sperm whale Killer whale Balıkesir University Institutional Repository (DSpace@Balıkesir) Science Bulletin 61 1 92 104 |
institution |
Open Polar |
collection |
Balıkesir University Institutional Repository (DSpace@Balıkesir) |
op_collection_id |
ftbalikesiruniv |
language |
English |
topic |
Oxygen İsotopes Phosphate Cetacean Whales Teeth Bones |
spellingShingle |
Oxygen İsotopes Phosphate Cetacean Whales Teeth Bones Ciner, Burcu Wang, Yang Parker, William Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
topic_facet |
Oxygen İsotopes Phosphate Cetacean Whales Teeth Bones |
description |
Ciner, Burcu (Balikesir Author) The oxygen isotope ratios (delta O-18) preserved in marine sediments have been widely used to reconstruct past ocean temperatures. However, there remain significant uncertainties associated with this method, owing to assumptions about the delta O-18 of ancient seawater which affects the temperature inferred from sediment delta O-18 records. In this study, oxygen isotope compositions of phosphate in teeth and bones from five different modern cetacean species, including sperm whale, pygmy sperm whale, short-finned pilot whale, killer whale, and Cuvier's beaked whale, and three fossil whales were determined. The data were used to assess whether the oxygen isotope ratios of biogenic phosphate (delta O-18(p)) from cetaceans are a reliable proxy for the oxygen isotopic composition of ocean water (delta O-18(w)). The delta O-18(p) values of modern cetaceans range from 15.5 parts per thousand to 21.3 parts per thousand, averaging (19.6 parts per thousand +/- 0.8 parts per thousand) (n = 136). Using a greatly expanded global cetacean delta O-18(p) dataset, the following regression equation is derived for cetaceans: delta O-18(w) = 0.95317 (+/- 0.03293) delta O-18(p) - 17.971 (+/- 0.605), r = 0.97253. The new equation, when applied to fossil teeth and bones, yielded reasonable estimates of ancient seawater delta O-18(w) values. Intra-tooth isotopic variations were observed within individual teeth. Among the selected species, the killer whale (O.orca) has the lowest delta O-18(p) values and the largest intra-tooth delta O-18(p) variation, reflecting its habitat preference and migratory behavior. The results show that oxygen isotope analysis of phosphate in cetacean teeth and dense ear bones provides a useful tool for reconstructing the oxygen isotopic composition of seawater and for examining environmental preferences (including migratory behavior) of both modern and ancient whales. S National Science Foundation EAR-0824628 EAR-0517806 EAR-0236357 DMR-1157490 |
author2 |
Mühendislik-Mimarlık Fakültesi |
format |
Article in Journal/Newspaper |
author |
Ciner, Burcu Wang, Yang Parker, William |
author_facet |
Ciner, Burcu Wang, Yang Parker, William |
author_sort |
Ciner, Burcu |
title |
Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
title_short |
Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
title_full |
Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
title_fullStr |
Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
title_full_unstemmed |
Oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
title_sort |
oxygen isotopic variations in modern cetacean teeth and bones: implications for ecological, paleoecological, and paleoclimatic studies |
publisher |
Elsevier Science Bv |
publishDate |
2016 |
url |
https://hdl.handle.net/20.500.12462/8251 https://doi.org/10.1007/s11434-015-0921-x |
genre |
Killer Whale Sperm whale Killer whale |
genre_facet |
Killer Whale Sperm whale Killer whale |
op_relation |
10.1007/s11434-015-0921-x Science Bulletin Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı 2095-9273 2095-9281 https://doi.org/10.1007/s11434-015-0921-x https://hdl.handle.net/20.500.12462/8251 61 1 92 104 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.12462/8251 https://doi.org/10.1007/s11434-015-0921-x |
container_title |
Science Bulletin |
container_volume |
61 |
container_issue |
1 |
container_start_page |
92 |
op_container_end_page |
104 |
_version_ |
1766057449574367232 |