Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house”
Abstract The CO2 concentration of air has increased over the last two centuries and recently surpassed 400 ppm. Carbon cycle models project CO2 concentrations of 720 to 1000 ppm for the IPCC intermediate scenario (RCP 6.0), resulting in an increase in global mean temperature of ~ 2.6 °C and a decrea...
Published in: | Progress in Earth and Planetary Science |
---|---|
Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SpringerOpen
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1186/s40645-018-0239-9 https://doaj.org/article/ba6bf9df76cb4623860c9b419c6b793c |
id |
ftdoajarticles:oai:doaj.org/article:ba6bf9df76cb4623860c9b419c6b793c |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ba6bf9df76cb4623860c9b419c6b793c 2023-05-15T17:50:31+02:00 Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” Hodaka Kawahata Kazuhiko Fujita Akira Iguchi Mayuri Inoue Shinya Iwasaki Azumi Kuroyanagi Ayumi Maeda Takuya Manaka Kazuyoshi Moriya Haruka Takagi Takashi Toyofuku Toshihiro Yoshimura Atsushi Suzuki 2019-01-01T00:00:00Z https://doi.org/10.1186/s40645-018-0239-9 https://doaj.org/article/ba6bf9df76cb4623860c9b419c6b793c EN eng SpringerOpen http://link.springer.com/article/10.1186/s40645-018-0239-9 https://doaj.org/toc/2197-4284 doi:10.1186/s40645-018-0239-9 2197-4284 https://doaj.org/article/ba6bf9df76cb4623860c9b419c6b793c Progress in Earth and Planetary Science, Vol 6, Iss 1, Pp 1-37 (2019) Partial pressure of CO2 Global warming Ocean acidification Coral Foraminifera Bleaching Geography. Anthropology. Recreation G Geology QE1-996.5 article 2019 ftdoajarticles https://doi.org/10.1186/s40645-018-0239-9 2022-12-31T08:41:24Z Abstract The CO2 concentration of air has increased over the last two centuries and recently surpassed 400 ppm. Carbon cycle models project CO2 concentrations of 720 to 1000 ppm for the IPCC intermediate scenario (RCP 6.0), resulting in an increase in global mean temperature of ~ 2.6 °C and a decrease in seawater pH of ~ 0.3. Together, global warming and ocean acidification are often referred to as the “evil twins” of climate change, potentially inducing severe threats in the near future. In this paper, our discussion is focused on the response of two major calcifiers, foraminifera and corals, which contribute much to the global carbonate burial rate. Photosymbiosis is regarded as an adaptive ecology for living in warm and oligotrophic oceans, especially for reef-building corals and larger reef-dwelling benthic foraminifera. As a consequence of global warming, bleaching may be a global threat to algal symbiont-bearing marine calcifying organisms under conditions of high temperature and light intensity. If CO2 is dissolved in seawater, the partial pressure of CO2 in seawater (pCO2) and dissolved inorganic carbon (DIC) increases while pH and the saturation state of carbonate minerals decreases without any change in total alkalinity. Generally, marine calcifying organisms show decreases in calcification rates in response to acidified seawater. However, the response often differs depending on situations, species, and life-cycle stage. Some benthic foraminifera showed a positive response to low pH conditions. The Acropora digitifera coral calcification of adult branches was not reduced markedly at higher pCO2 conditions, although calcification tended to decrease versus pCO2 in both aposymbiotic and symbiotic polyps. New analytical technologies help identify important constraints on calcification processes. Based upon Ca isotopes, the transport path of Ca2+ and the degree of its activity would predominantly control the carbonate precipitation rate. Visualization of the extracellular pH distribution shows that proton ... Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Progress in Earth and Planetary Science 6 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Partial pressure of CO2 Global warming Ocean acidification Coral Foraminifera Bleaching Geography. Anthropology. Recreation G Geology QE1-996.5 |
spellingShingle |
Partial pressure of CO2 Global warming Ocean acidification Coral Foraminifera Bleaching Geography. Anthropology. Recreation G Geology QE1-996.5 Hodaka Kawahata Kazuhiko Fujita Akira Iguchi Mayuri Inoue Shinya Iwasaki Azumi Kuroyanagi Ayumi Maeda Takuya Manaka Kazuyoshi Moriya Haruka Takagi Takashi Toyofuku Toshihiro Yoshimura Atsushi Suzuki Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” |
topic_facet |
Partial pressure of CO2 Global warming Ocean acidification Coral Foraminifera Bleaching Geography. Anthropology. Recreation G Geology QE1-996.5 |
description |
Abstract The CO2 concentration of air has increased over the last two centuries and recently surpassed 400 ppm. Carbon cycle models project CO2 concentrations of 720 to 1000 ppm for the IPCC intermediate scenario (RCP 6.0), resulting in an increase in global mean temperature of ~ 2.6 °C and a decrease in seawater pH of ~ 0.3. Together, global warming and ocean acidification are often referred to as the “evil twins” of climate change, potentially inducing severe threats in the near future. In this paper, our discussion is focused on the response of two major calcifiers, foraminifera and corals, which contribute much to the global carbonate burial rate. Photosymbiosis is regarded as an adaptive ecology for living in warm and oligotrophic oceans, especially for reef-building corals and larger reef-dwelling benthic foraminifera. As a consequence of global warming, bleaching may be a global threat to algal symbiont-bearing marine calcifying organisms under conditions of high temperature and light intensity. If CO2 is dissolved in seawater, the partial pressure of CO2 in seawater (pCO2) and dissolved inorganic carbon (DIC) increases while pH and the saturation state of carbonate minerals decreases without any change in total alkalinity. Generally, marine calcifying organisms show decreases in calcification rates in response to acidified seawater. However, the response often differs depending on situations, species, and life-cycle stage. Some benthic foraminifera showed a positive response to low pH conditions. The Acropora digitifera coral calcification of adult branches was not reduced markedly at higher pCO2 conditions, although calcification tended to decrease versus pCO2 in both aposymbiotic and symbiotic polyps. New analytical technologies help identify important constraints on calcification processes. Based upon Ca isotopes, the transport path of Ca2+ and the degree of its activity would predominantly control the carbonate precipitation rate. Visualization of the extracellular pH distribution shows that proton ... |
format |
Article in Journal/Newspaper |
author |
Hodaka Kawahata Kazuhiko Fujita Akira Iguchi Mayuri Inoue Shinya Iwasaki Azumi Kuroyanagi Ayumi Maeda Takuya Manaka Kazuyoshi Moriya Haruka Takagi Takashi Toyofuku Toshihiro Yoshimura Atsushi Suzuki |
author_facet |
Hodaka Kawahata Kazuhiko Fujita Akira Iguchi Mayuri Inoue Shinya Iwasaki Azumi Kuroyanagi Ayumi Maeda Takuya Manaka Kazuyoshi Moriya Haruka Takagi Takashi Toyofuku Toshihiro Yoshimura Atsushi Suzuki |
author_sort |
Hodaka Kawahata |
title |
Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” |
title_short |
Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” |
title_full |
Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” |
title_fullStr |
Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” |
title_full_unstemmed |
Perspective on the response of marine calcifiers to global warming and ocean acidification—Behavior of corals and foraminifera in a high CO2 world “hot house” |
title_sort |
perspective on the response of marine calcifiers to global warming and ocean acidification—behavior of corals and foraminifera in a high co2 world “hot house” |
publisher |
SpringerOpen |
publishDate |
2019 |
url |
https://doi.org/10.1186/s40645-018-0239-9 https://doaj.org/article/ba6bf9df76cb4623860c9b419c6b793c |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Progress in Earth and Planetary Science, Vol 6, Iss 1, Pp 1-37 (2019) |
op_relation |
http://link.springer.com/article/10.1186/s40645-018-0239-9 https://doaj.org/toc/2197-4284 doi:10.1186/s40645-018-0239-9 2197-4284 https://doaj.org/article/ba6bf9df76cb4623860c9b419c6b793c |
op_doi |
https://doi.org/10.1186/s40645-018-0239-9 |
container_title |
Progress in Earth and Planetary Science |
container_volume |
6 |
container_issue |
1 |
_version_ |
1766157298383716352 |