Citation:

meps10912

Name: Ocean acidification rapidly reduces dinitrogen fixation associated with the hermatypic coral Seriatopora hystrix
Published: 2014
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Cnidaria; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Other metabolic rates; Seriatopora hystrix; Single species; South Pacific; Tropical

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Abstract:

Since productivity and growth of coral-associated dinoflagellate algae is nitrogen (N)-limited, dinitrogen (N2) fixation by coral-associated microbes is likely crucial for maintaining the coral-dinoflagellate symbiosis. It is thus essential to understand the effects future climate change will have on N2 fixation by the coral holobiont. This laboratory study is the first to investigate short-term effects of ocean acidification on N2 fixation activity associated with the tropical, hermatypic coral Seriatopora hystrix using the acetylene reduction assay in combination with calcification measurements. Findings reveal that simulated ocean acidification ( pCO2 1080 µatm) caused a rapid and significant decrease (53%) in N2 fixation rates associated with S. hystrix compared to the present day scenario ( pCO2 486 µatm). In addition, N2 fixation associated with the coral holobiont showed a positive exponential relationship with its calcification rates. This suggests that even small declines in calcification rates of hermatypic corals under high CO2 conditions may result in decreased N2 fixation activity, since these 2 processes may compete for energy in the coral holobiont. Ultimately, an intensified N limitation in combination with a decline in skeletal growth may trigger a negative feedback loop on coral productivity exacerbating the negative long-term effects of ocean acidification.

Keyword(s):

Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Cnidaria; Coast and continental shelf; Growth/Morphology; Laboratory experiment; Other metabolic rates; Seriatopora hystrix; Single species; South Pacific; Tropical

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse (2015): seacarb: seawater carbonate chemistry with R. R package version 3.0.6. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2015) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Species	Species		Rädecker, Nils
2	Identification	ID		Rädecker, Nils
3	Treatment	Treat		Rädecker, Nils
4	Surface area	SA	cm²	Rädecker, Nils
5	Nitrogen fixation rate, integrated per hour	N fix int	µmol/m²/h	Rädecker, Nils		light, µmol C2H4/m**2/h
6	Nitrogen fixation rate, integrated per hour	N fix int	µmol/m²/h	Rädecker, Nils		dark, µmol C2H4/m**2/h
7	Calcification rate of calcium carbonate	Calc rate CaCO3	µmol/cm²/h	Rädecker, Nils
8	Calcification rate of calcium carbonate	Calc rate CaCO3	µmol/cm²/h	Rädecker, Nils
9	Temperature, water	Temp	°C	Rädecker, Nils
10	Irradiance	E	µmol/m²/s	Rädecker, Nils
11	Salinity	Sal		Rädecker, Nils
12	pH	pH		Rädecker, Nils	Potentiometric	NBS scale
13	Alkalinity, total	AT	µmol/kg	Rädecker, Nils	Potentiometric titration
14	Alkalinity, total, standard error	AT std e	±	Rädecker, Nils	Potentiometric titration
15	Aragonite saturation state	Omega Arg		Rädecker, Nils	Calculated using CO2SYS
16	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Rädecker, Nils	Calculated using CO2SYS
17	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
18	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
19	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
20	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
21	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
22	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
23	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
24	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
25	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
26	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

772 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Species	2 ID	3 Treat	4 SA [cm²]	5 N fix int [µmol/m²/h] (light, µmol C2H4/m**2/h)	6 N fix int [µmol/m²/h] (dark, µmol C2H4/m**2/h)	7 Calc rate CaCO3 [µmol/cm²/h]	8 Calc rate CaCO3 [µmol/cm²/h]	9 Temp [°C]	10 E [µmol/m²/s]	11 Sal	12 pH (NBS scale, Potentiometric)	13 AT [µmol/kg] (Potentiometric titration)	14 AT std e [±] (Potentiometric titration)	15 Omega Arg (Calculated using CO2SYS)	16 pCO2water_SST_wet [µatm] (Calculated using CO2SYS)	17 CSC flag (Calculated using seacarb afte...)	18 pH (total scale, Calculated using...)	19 CO2 [µmol/kg] (Calculated using seacarb afte...)	20 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	21 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	22 [HCO3]- [µmol/kg] (Calculated using seacarb afte...)	23 [CO3]2- [µmol/kg] (Calculated using seacarb afte...)	24 DIC [µmol/kg] (Calculated using seacarb afte...)	25 Omega Arg (Calculated using seacarb afte...)	26 Omega Cal (Calculated using seacarb afte...)
Seriatopora hystrix	Tank 1	ambient CO2	5.57	5.918	3.349			24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 1	ambient CO2	3.91	15.048	3.388			24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 1	ambient CO2	3.53	19.211	5.601	0.427287605	-0.013786713	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 1	ambient CO2	12.06	2.568	0.833	0.102196450	0.017617787	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 1	ambient CO2	5.54	14.538	0.000	0.309582838	0.320845432	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 1	ambient CO2	7.15	11.284	0.903	0.300038677	0.265675568	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 1	ambient CO2	20.59	5.201	1.330	0.054615462	0.100281066	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	3.02	12.172	1.526	-0.045470800	-0.544817606	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	6.67	2.700	2.425	0.092413867	-0.201186120	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	14.60	6.155	1.841	0.189617270	0.110765585	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	15.98	6.529	4.620	0.234396139	0.093945845	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	7.11	2.779	0.263	0.227765692	0.189356541	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	8.06	19.817	0.247	0.251575240	-0.012299990	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	10.33	0.563	0.160	0.083858435	-0.057831387	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 2	ambient CO2	36.79	0.042	0.346	-0.058732597	-0.088999547	24.7	110	33.7	8.02	1778	35	1.9	486	26	7.88	13.82	479.90	481.44	1476.22	117.02	1607.06	1.87	2.85
Seriatopora hystrix	Tank 3	high CO2	5.16	4.921	1.108			24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	19.32	1.761	0.644			24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	9.90	7.851	2.213	-0.071537613	-0.170061823	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	6.94	7.585	0.492	-0.119873339	-0.186190438	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	15.73	2.888	0.000	0.219609262	0.196181478	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	14.60	1.301	1.545	-0.014835290	-0.054799373	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	5.98	3.342	0.597	-0.072810913	-0.096835112	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 3	high CO2	11.13	3.361	0.361	0.166956004	0.066030863	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	24.60	0.231	0.756	0.003539466	-0.004423960	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	6.77	4.769	3.075	0.321725829	-0.211619110	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	37.63	2.061	0.198	0.063418711	-0.035410177	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	9.19	0.745	1.013	-0.026458736	-0.150680565	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	14.94	0.565	0.111	0.083858435	-0.057831387	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	9.80	13.596	5.268	-0.015976465	-0.033298289	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49
Seriatopora hystrix	Tank 4	high CO2	10.26	3.509	2.284	0.077644379	0.030536220	24.9	110	33.6	7.71	1731	51	1.0	1080	26	7.57	30.01	1046.79	1050.15	1572.56	61.28	1663.85	0.98	1.49