Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean
Fixed nitrogen ( N) is a limiting nutrient for algae in the low- latitude ocean, and its oceanic inventory may have been higher during ice ages, thus helping to lower atmospheric CO2 during those intervals. In organic matter within planktonic foraminifera shells in Caribbean Sea sediments, we found...
Published in: | Science |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2009
|
Subjects: | |
Online Access: | https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31874 https://doi.org/10.1126/science.1165787 |
id |
ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:31874 |
---|---|
record_format |
openpolar |
spelling |
ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:31874 2023-05-15T18:00:47+02:00 Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean Ren, Haojia Sigman, Daniel M. Meckler, Anna Nele Plessen, Birgit Robinson, Rebecca S. Rosenthal, Yair Haug, Gerald H. 2009 https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31874 https://doi.org/10.1126/science.1165787 eng eng https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31874 https://doi.org/10.1126/science.1165787 info:eu-repo/semantics/closedAccess Institut für Geowissenschaften article doc-type:article 2009 ftubpotsdam https://doi.org/10.1126/science.1165787 2022-07-28T20:44:44Z Fixed nitrogen ( N) is a limiting nutrient for algae in the low- latitude ocean, and its oceanic inventory may have been higher during ice ages, thus helping to lower atmospheric CO2 during those intervals. In organic matter within planktonic foraminifera shells in Caribbean Sea sediments, we found that the N-15/N-14 ratio from the last ice age is higher than that from the current interglacial, indicating a higher nitrate N-15/N-14 ratio in the Caribbean thermocline. This change and other species- specific differences are best explained by less N fixation in the Atlantic during the last ice age. The fixation decrease was most likely a response to a known ice age reduction in ocean N loss, and it would have worked to balance the ocean N budget and to curb ice age- interglacial change in the N inventory. Article in Journal/Newspaper Planktonic foraminifera University of Potsdam: publish.UP Science 323 5911 244 248 |
institution |
Open Polar |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
Institut für Geowissenschaften |
spellingShingle |
Institut für Geowissenschaften Ren, Haojia Sigman, Daniel M. Meckler, Anna Nele Plessen, Birgit Robinson, Rebecca S. Rosenthal, Yair Haug, Gerald H. Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean |
topic_facet |
Institut für Geowissenschaften |
description |
Fixed nitrogen ( N) is a limiting nutrient for algae in the low- latitude ocean, and its oceanic inventory may have been higher during ice ages, thus helping to lower atmospheric CO2 during those intervals. In organic matter within planktonic foraminifera shells in Caribbean Sea sediments, we found that the N-15/N-14 ratio from the last ice age is higher than that from the current interglacial, indicating a higher nitrate N-15/N-14 ratio in the Caribbean thermocline. This change and other species- specific differences are best explained by less N fixation in the Atlantic during the last ice age. The fixation decrease was most likely a response to a known ice age reduction in ocean N loss, and it would have worked to balance the ocean N budget and to curb ice age- interglacial change in the N inventory. |
format |
Article in Journal/Newspaper |
author |
Ren, Haojia Sigman, Daniel M. Meckler, Anna Nele Plessen, Birgit Robinson, Rebecca S. Rosenthal, Yair Haug, Gerald H. |
author_facet |
Ren, Haojia Sigman, Daniel M. Meckler, Anna Nele Plessen, Birgit Robinson, Rebecca S. Rosenthal, Yair Haug, Gerald H. |
author_sort |
Ren, Haojia |
title |
Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean |
title_short |
Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean |
title_full |
Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean |
title_fullStr |
Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean |
title_full_unstemmed |
Foraminiferal isotope evidence of reduced nitrogen fixation in the Ice Age Atlantic ocean |
title_sort |
foraminiferal isotope evidence of reduced nitrogen fixation in the ice age atlantic ocean |
publishDate |
2009 |
url |
https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31874 https://doi.org/10.1126/science.1165787 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
https://publishup.uni-potsdam.de/opus4-ubp/frontdoor/index/index/docId/31874 https://doi.org/10.1126/science.1165787 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1126/science.1165787 |
container_title |
Science |
container_volume |
323 |
container_issue |
5911 |
container_start_page |
244 |
op_container_end_page |
248 |
_version_ |
1766170033540562944 |