Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability
Stable isotopes of N provide a new approach to the study of algal production in the ocean, yet knowledge of the isotope fractionation (epsilon) in various oceanic regimes is lacking. Here we report large and rapid changes in isotope composition (delta(15)N) of 2 coastal diatoms and 2 clones (open an...
Main Authors: | , , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1998
|
Subjects: | |
Online Access: | http://ir.qdio.ac.cn/handle/337002/2861 |
id |
ftchinacasciocas:oai:ir.qdio.ac.cn:337002/2860 |
---|---|
record_format |
openpolar |
spelling |
ftchinacasciocas:oai:ir.qdio.ac.cn:337002/2860 2023-05-15T18:28:39+02:00 Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability Waser, NA Yin, KD Yu, ZM Tada, K Harrison, PJ Turpin, DH Calvert, SE 1998 http://ir.qdio.ac.cn/handle/337002/2861 英语 eng MARINE ECOLOGY PROGRESS SERIES Waser, NA; Yin, KD; Yu, ZM; Tada, K; Harrison, PJ; Turpin, DH; Calvert, SE.Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability,MARINE ECOLOGY-PROGRESS SERIES,1998,169():29-41 http://ir.qdio.ac.cn/handle/337002/2861 Isotope Fractionation N-15/n-14 Nitrogen Uptake Diatoms Coccolithophores Nitrate Ammonium Urea Ecology Marine & Freshwater Biology Oceanography Article 期刊论文 1998 ftchinacasciocas 2022-06-27T05:32:18Z Stable isotopes of N provide a new approach to the study of algal production in the ocean, yet knowledge of the isotope fractionation (epsilon) in various oceanic regimes is lacking. Here we report large and rapid changes in isotope composition (delta(15)N) of 2 coastal diatoms and 2 clones (open and coastal) of a coccolithophore grown in the simultaneous presence of nitrate, ammonium and urea under varying conditions of N availability (i.e. N-sufficiency and N-starvation followed by N-resupply) and hence different physiological states, During N-sufficiency, the delta(15)N of particulate organic N (PON) was well reproduced, using a model derived from Rayleigh distillation theory, with constant epsilon similar to that for growth on each individual N source. However, following N-resupply, the variations in delta(15)N(PON) could be well explained only in the case of the open ocean Emiliania huxleyi, with epsilon similar to N-sufficient conditions. It was concluded that the mechanism of isotope fractionation changed rapidly with N availability for the 3 coastal clones. However, in the case of E. huxleyi isolated from the Subarctic Pacific Ocean, no evidence of a change in mechanism was found, suggesting that perhaps open ocean species can quickly recover from N-depleted conditions. Stable isotopes of N provide a new approach to the study of algal production in the ocean, yet knowledge of the isotope fractionation (epsilon) in various oceanic regimes is lacking. Here we report large and rapid changes in isotope composition (delta(15)N) of 2 coastal diatoms and 2 clones (open and coastal) of a coccolithophore grown in the simultaneous presence of nitrate, ammonium and urea under varying conditions of N availability (i.e. N-sufficiency and N-starvation followed by N-resupply) and hence different physiological states, During N-sufficiency, the delta(15)N of particulate organic N (PON) was well reproduced, using a model derived from Rayleigh distillation theory, with constant epsilon similar to that for growth on each ... Article in Journal/Newspaper Subarctic Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Pacific |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Isotope Fractionation N-15/n-14 Nitrogen Uptake Diatoms Coccolithophores Nitrate Ammonium Urea Ecology Marine & Freshwater Biology Oceanography |
spellingShingle |
Isotope Fractionation N-15/n-14 Nitrogen Uptake Diatoms Coccolithophores Nitrate Ammonium Urea Ecology Marine & Freshwater Biology Oceanography Waser, NA Yin, KD Yu, ZM Tada, K Harrison, PJ Turpin, DH Calvert, SE Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability |
topic_facet |
Isotope Fractionation N-15/n-14 Nitrogen Uptake Diatoms Coccolithophores Nitrate Ammonium Urea Ecology Marine & Freshwater Biology Oceanography |
description |
Stable isotopes of N provide a new approach to the study of algal production in the ocean, yet knowledge of the isotope fractionation (epsilon) in various oceanic regimes is lacking. Here we report large and rapid changes in isotope composition (delta(15)N) of 2 coastal diatoms and 2 clones (open and coastal) of a coccolithophore grown in the simultaneous presence of nitrate, ammonium and urea under varying conditions of N availability (i.e. N-sufficiency and N-starvation followed by N-resupply) and hence different physiological states, During N-sufficiency, the delta(15)N of particulate organic N (PON) was well reproduced, using a model derived from Rayleigh distillation theory, with constant epsilon similar to that for growth on each individual N source. However, following N-resupply, the variations in delta(15)N(PON) could be well explained only in the case of the open ocean Emiliania huxleyi, with epsilon similar to N-sufficient conditions. It was concluded that the mechanism of isotope fractionation changed rapidly with N availability for the 3 coastal clones. However, in the case of E. huxleyi isolated from the Subarctic Pacific Ocean, no evidence of a change in mechanism was found, suggesting that perhaps open ocean species can quickly recover from N-depleted conditions. Stable isotopes of N provide a new approach to the study of algal production in the ocean, yet knowledge of the isotope fractionation (epsilon) in various oceanic regimes is lacking. Here we report large and rapid changes in isotope composition (delta(15)N) of 2 coastal diatoms and 2 clones (open and coastal) of a coccolithophore grown in the simultaneous presence of nitrate, ammonium and urea under varying conditions of N availability (i.e. N-sufficiency and N-starvation followed by N-resupply) and hence different physiological states, During N-sufficiency, the delta(15)N of particulate organic N (PON) was well reproduced, using a model derived from Rayleigh distillation theory, with constant epsilon similar to that for growth on each ... |
format |
Article in Journal/Newspaper |
author |
Waser, NA Yin, KD Yu, ZM Tada, K Harrison, PJ Turpin, DH Calvert, SE |
author_facet |
Waser, NA Yin, KD Yu, ZM Tada, K Harrison, PJ Turpin, DH Calvert, SE |
author_sort |
Waser, NA |
title |
Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability |
title_short |
Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability |
title_full |
Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability |
title_fullStr |
Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability |
title_full_unstemmed |
Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability |
title_sort |
nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of n availability |
publishDate |
1998 |
url |
http://ir.qdio.ac.cn/handle/337002/2861 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
MARINE ECOLOGY PROGRESS SERIES Waser, NA; Yin, KD; Yu, ZM; Tada, K; Harrison, PJ; Turpin, DH; Calvert, SE.Nitrogen isotope fractionation during nitrate, ammonium and urea uptake by marine diatoms and coccolithophores under various conditions of N availability,MARINE ECOLOGY-PROGRESS SERIES,1998,169():29-41 http://ir.qdio.ac.cn/handle/337002/2861 |
_version_ |
1766211203432972288 |