Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification

Yasuaki Tanaka, Akira Iguchi, Kozue Nishida, Mayuri Takeuchi, Takashi Nakamura, Atsushi Suzuki, Kazuhiko Sakai

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The interactive effects of nutrient availability and ocean acidification on coral calcification were investigated using post-settlement juvenile corals ofAcropora digitiferacultured in nutrient-sufficient or nutrient-depleted seawater for 4 d and then exposed to seawater with different partial pressure of carbon dioxide (PCO2) conditions (38.8 or 92.5 Pa) for 10 d. After the nutrient pretreatment, corals in the high nutrient condition (HN corals) had a significantly higher abundance of endosymbiotic algae than did those in the low nutrient condition (LN corals). The high abundance of endosymbionts in HN corals was reduced as a result of subsequent seawater acidification, and the chlorophylla per algal cell increased. The photosynthetic oxygen production rate by endosymbionts was enhanced by the acidified seawater regardless of the nutrient treatment, indicating that the reduction in endosymbiont density in HN corals due to acidification was compensated for by the increase in chlorophyll a per cell. Though the photosynthetic rate increased in the acidified conditions for both LN and HN corals, the calcification rate significantly decreased for LN corals but not for HN corals. The acquisition of nutrients from seawater, rather than the increase in alkalinity caused by photosynthesis, might effectively alleviate the negative response of coral calcification to seawater acidification, suggesting that the response of corals and their endosymbionts to ocean acidification can be influenced by nutrient conditions.

Original languageEnglish
Pages (from-to)1468-1476
Number of pages9
JournalLimnology and Oceanography
Volume59
Issue number5
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

endosymbiont
endosymbionts
nutrient availability
corals
coral
seawater
nutrient
nutrients
calcification
acidification
algae
ocean acidification
alkalinity
partial pressure
chlorophyll a
photosynthesis
pretreatment
carbon dioxide
alga

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science

Cite this

Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification. / Tanaka, Yasuaki; Iguchi, Akira; Nishida, Kozue; Takeuchi, Mayuri; Nakamura, Takashi; Suzuki, Atsushi; Sakai, Kazuhiko.

In: Limnology and Oceanography, Vol. 59, No. 5, 2014, p. 1468-1476.

Research output: Contribution to journalArticle

Tanaka, Yasuaki ; Iguchi, Akira ; Nishida, Kozue ; Takeuchi, Mayuri ; Nakamura, Takashi ; Suzuki, Atsushi ; Sakai, Kazuhiko. / Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification. In: Limnology and Oceanography. 2014 ; Vol. 59, No. 5. pp. 1468-1476.
@article{ad5e39f7feeb477fb9f21fe04797a3e9,
title = "Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification",
abstract = "The interactive effects of nutrient availability and ocean acidification on coral calcification were investigated using post-settlement juvenile corals ofAcropora digitiferacultured in nutrient-sufficient or nutrient-depleted seawater for 4 d and then exposed to seawater with different partial pressure of carbon dioxide (PCO2) conditions (38.8 or 92.5 Pa) for 10 d. After the nutrient pretreatment, corals in the high nutrient condition (HN corals) had a significantly higher abundance of endosymbiotic algae than did those in the low nutrient condition (LN corals). The high abundance of endosymbionts in HN corals was reduced as a result of subsequent seawater acidification, and the chlorophylla per algal cell increased. The photosynthetic oxygen production rate by endosymbionts was enhanced by the acidified seawater regardless of the nutrient treatment, indicating that the reduction in endosymbiont density in HN corals due to acidification was compensated for by the increase in chlorophyll a per cell. Though the photosynthetic rate increased in the acidified conditions for both LN and HN corals, the calcification rate significantly decreased for LN corals but not for HN corals. The acquisition of nutrients from seawater, rather than the increase in alkalinity caused by photosynthesis, might effectively alleviate the negative response of coral calcification to seawater acidification, suggesting that the response of corals and their endosymbionts to ocean acidification can be influenced by nutrient conditions.",
author = "Yasuaki Tanaka and Akira Iguchi and Kozue Nishida and Mayuri Takeuchi and Takashi Nakamura and Atsushi Suzuki and Kazuhiko Sakai",
year = "2014",
doi = "10.4319/lo.2014.59.5.1468",
language = "English",
volume = "59",
pages = "1468--1476",
journal = "Limnology and Oceanography",
issn = "0024-3590",
publisher = "American Society of Limnology and Oceanography Inc.",
number = "5",

}

TY - JOUR

T1 - Nutrient availability affects the response of juvenile corals and the endosymbionts to ocean acidification

AU - Tanaka, Yasuaki

AU - Iguchi, Akira

AU - Nishida, Kozue

AU - Takeuchi, Mayuri

AU - Nakamura, Takashi

AU - Suzuki, Atsushi

AU - Sakai, Kazuhiko

PY - 2014

Y1 - 2014

N2 - The interactive effects of nutrient availability and ocean acidification on coral calcification were investigated using post-settlement juvenile corals ofAcropora digitiferacultured in nutrient-sufficient or nutrient-depleted seawater for 4 d and then exposed to seawater with different partial pressure of carbon dioxide (PCO2) conditions (38.8 or 92.5 Pa) for 10 d. After the nutrient pretreatment, corals in the high nutrient condition (HN corals) had a significantly higher abundance of endosymbiotic algae than did those in the low nutrient condition (LN corals). The high abundance of endosymbionts in HN corals was reduced as a result of subsequent seawater acidification, and the chlorophylla per algal cell increased. The photosynthetic oxygen production rate by endosymbionts was enhanced by the acidified seawater regardless of the nutrient treatment, indicating that the reduction in endosymbiont density in HN corals due to acidification was compensated for by the increase in chlorophyll a per cell. Though the photosynthetic rate increased in the acidified conditions for both LN and HN corals, the calcification rate significantly decreased for LN corals but not for HN corals. The acquisition of nutrients from seawater, rather than the increase in alkalinity caused by photosynthesis, might effectively alleviate the negative response of coral calcification to seawater acidification, suggesting that the response of corals and their endosymbionts to ocean acidification can be influenced by nutrient conditions.

AB - The interactive effects of nutrient availability and ocean acidification on coral calcification were investigated using post-settlement juvenile corals ofAcropora digitiferacultured in nutrient-sufficient or nutrient-depleted seawater for 4 d and then exposed to seawater with different partial pressure of carbon dioxide (PCO2) conditions (38.8 or 92.5 Pa) for 10 d. After the nutrient pretreatment, corals in the high nutrient condition (HN corals) had a significantly higher abundance of endosymbiotic algae than did those in the low nutrient condition (LN corals). The high abundance of endosymbionts in HN corals was reduced as a result of subsequent seawater acidification, and the chlorophylla per algal cell increased. The photosynthetic oxygen production rate by endosymbionts was enhanced by the acidified seawater regardless of the nutrient treatment, indicating that the reduction in endosymbiont density in HN corals due to acidification was compensated for by the increase in chlorophyll a per cell. Though the photosynthetic rate increased in the acidified conditions for both LN and HN corals, the calcification rate significantly decreased for LN corals but not for HN corals. The acquisition of nutrients from seawater, rather than the increase in alkalinity caused by photosynthesis, might effectively alleviate the negative response of coral calcification to seawater acidification, suggesting that the response of corals and their endosymbionts to ocean acidification can be influenced by nutrient conditions.

UR - http://www.scopus.com/inward/record.url?scp=84905057749&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905057749&partnerID=8YFLogxK

U2 - 10.4319/lo.2014.59.5.1468

DO - 10.4319/lo.2014.59.5.1468

M3 - Article

AN - SCOPUS:84905057749

VL - 59

SP - 1468

EP - 1476

JO - Limnology and Oceanography

JF - Limnology and Oceanography

SN - 0024-3590

IS - 5

ER -