Citation:

s41598-017-19051-w

Name: Seawater carbonate chemistry and benthic primary production and inorganic nitrogen fluxes in two coastal sediments
Published: 2018-04-02
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; Laboratory experiment; Other studied parameter or process; Soft-bottom community; South Pacific; Temperate

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Abstract:

Ocean acidification may alter the cycling of nitrogen in coastal sediment and so the sediment-seawater nitrogen flux, an important driver of pelagic productivity. To investigate how this perturbation affects the fluxes of NOX- (nitrite/nitrate), NH4+ and O2, we incubated estuarine sand and subtidal silt in recirculating seawater with a CO2-adjusted pH of 8.1 and 7.9. During a 41-day incubation, the seawater kept at pH 8.1 lost 97% of its NOX- content but the seawater kept at pH 7.9 lost only 18%. Excess CO2 increased benthic photosynthesis. In the silt, this was accompanied by a reversal of the initial NOX- efflux into influx. The estuarine sand sustained its initial NOX- influx but, by the end of the incubation, released more NH4+ at pH 7.9 than at pH 8.1. We hypothesise that these effects share a common cause; excess CO2 increased the growth of benthic microalgae and so nutrient competition with ammonia oxidising bacteria (AOB). In the silt, diatoms likely outcompeted AOB for NH4+ and photosynthesis increased the dark/light fluctuations in the pore water oxygenation inhibiting nitrification and coupled nitrification/denitrification. If this is correct, then excess CO2 may lead to retention of inorganic nitrogen adding to the pressures of increasing coastal eutrophication.

Keyword(s):

Benthos; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Entire community; Laboratory experiment; Other studied parameter or process; Soft-bottom community; South Pacific; Temperate

Further details:

Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Median Latitude: -37.142640 * Median Longitude: 175.559030 * South-bound Latitude: -37.491390 * West-bound Longitude: 175.170560 * North-bound Latitude: -36.793890 * East-bound Longitude: 175.947500

Date/Time Start: 2015-05-10T00:00:00 * Date/Time End: 2015-05-12T00:00:00

Event(s):

Hauraki_Gulf * Latitude: -36.793890 * Longitude: 175.170560 * Date/Time: 2015-05-10T00:00:00 * Method/Device: Experiment (EXP)

Tauranga_Harbour * Latitude: -37.491390 * Longitude: 175.947500 * Date/Time: 2015-05-12T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2016) 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). The date of carbonate chemistry calculation by seacarb is 2018-03-28.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Vopel, Kay
2	Type	Type		Vopel, Kay		study
3	Identification	ID		Vopel, Kay		event
4	Oxygen uptake, total	TOU	µmol/m²/h	Vopel, Kay
5	Difference	Diff		Vopel, Kay		light/dark differences in TOU
6	Ammonium, flux	[NH4]+ flux	µmol/m²/h	Vopel, Kay
7	Nitrite and nitrate, flux	NO2+NO3 flux	µmol/m²/h	Vopel, Kay
8	Treatment	Treat		Vopel, Kay
9	Time point, descriptive	Time point		Vopel, Kay
10	Sediment type	Sediment		Vopel, Kay
11	Identification	ID		Vopel, Kay		core
12	Light mode	L mode		Vopel, Kay
13	Salinity	Sal		Vopel, Kay
14	Salinity, standard deviation	Sal std dev	±	Vopel, Kay
15	Temperature, water	Temp	°C	Vopel, Kay
16	Temperature, water, standard deviation	Temp std dev	±	Vopel, Kay
17	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Vopel, Kay	Calculated using CO2calc
18	Partial pressure of carbon dioxide, standard deviation	pCO2 std dev	±	Vopel, Kay	Calculated using CO2calc
19	pH	pH		Vopel, Kay	Potentiometric	total scale
20	pH, standard deviation	pH std dev	±	Vopel, Kay	Potentiometric	total scale
21	Carbon, inorganic, dissolved	DIC	µmol/kg	Vopel, Kay
22	Carbon, inorganic, dissolved, standard deviation	DIC std dev	±	Vopel, Kay
23	Alkalinity, total	AT	µmol/kg	Vopel, Kay	Calculated using CO2calc
24	Alkalinity, total, standard deviation	AT std dev	±	Vopel, Kay	Calculated using CO2calc
25	Ammonium	[NH4]+	µg/m³	Vopel, Kay
26	Ammonium, standard deviation	[NH4]+ std dev	±	Vopel, Kay
27	Nitrate and Nitrite	[NO3]- + [NO2]-	mg/m³	Vopel, Kay
28	Nitrate and Nitrite, standard deviation	[NO3]- + [NO2]- std dev	±	Vopel, Kay
29	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
30	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
31	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)
32	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)
33	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
34	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
35	Alkalinity, total	AT	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
36	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
37	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:

2627 data points

Data

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

1 Event	2 Type (study)	3 ID (event)	4 TOU [µmol/m²/h]	5 Diff (light/dark differences in TOU)	6 [NH4]+ flux [µmol/m²/h]	7 NO2+NO3 flux [µmol/m²/h]	8 Treat	9 Time point	10 Sediment	11 ID (core)	12 L mode	13 Sal	14 Sal std dev [±]	15 Temp [°C]	16 Temp std dev [±]	17 pCO2water_SST_wet [µatm] (Calculated using CO2calc)	18 pCO2 std dev [±] (Calculated using CO2calc)	19 pH (total scale, Potentiometric)	20 pH std dev [±] (total scale, Potentiometric)	21 DIC [µmol/kg]	22 DIC std dev [±]	23 AT [µmol/kg] (Calculated using CO2calc)	24 AT std dev [±] (Calculated using CO2calc)	25 [NH4]+ [µg/m³]	26 [NH4]+ std dev [±]	27 [NO3]- + [NO2]- [mg/m³]	28 [NO3]- + [NO2]- std dev [±]	29 CSC flag (Calculated using seacarb afte...)	30 CO2 [µmol/kg] (Calculated using seacarb afte...)	31 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	32 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	33 [HCO3]- [µmol/kg] (Calculated using seacarb afte...)	34 [CO3]2- [µmol/kg] (Calculated using seacarb afte...)	35 AT [µmol/kg] (Calculated using seacarb afte...)	36 Omega Arg (Calculated using seacarb afte...)	37 Omega Cal (Calculated using seacarb afte...)
Tauranga_Harbour	laboratory	1	-1212.81	208.16	-138.973	30.506	Control	Initial	Estuarine sand	E7	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	2	-1080.20	-306.84	-137.009	39.609	Control	Initial	Estuarine sand	E9	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	3	-1255.49	154.62	-427.749	31.736	Control	Initial	Estuarine sand	E10	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	4	-920.09	-240.36	-9.369	24.985	Control	Initial	Estuarine sand	E6	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	5	-1667.79	239.55	-257.653	37.139	Treatment	Initial	Estuarine sand	E14	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	6	-877.12	-5.20	-67.775	23.072	Treatment	Initial	Estuarine sand	E15	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	7	-921.08	-239.24	-9.369	24.985	Treatment	Initial	Estuarine sand	E11	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	8	-977.32	585.72	-248.821	27.505	Treatment	Initial	Estuarine sand	E12	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	9	-1082.47	637.87	-100.215	37.016	Treatment	Initial	Estuarine sand	E13	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	10	-760.20	425.53	-31.626	-0.887	Control	Final	Estuarine sand	E7	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	11	-1065.77	290.95	-94.970	-0.123	Control	Final	Estuarine sand	E9	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	12	-874.92	270.27	-108.644	1.977	Control	Final	Estuarine sand	E10	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	13	-1498.84	492.56	-160.271	-6.048	Control	Final	Estuarine sand	E6	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	14	-1249.11	353.12	-103.378	2.213	Control	Final	Estuarine sand	E8	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	15	-1390.32	537.69	-225.477	30.278	Treatment	Final	Estuarine sand	E14	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	16	-1106.84	910.49	-151.598	31.210	Treatment	Final	Estuarine sand	E15	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	17	-1423.97	805.03	-104.987	9.169	Treatment	Final	Estuarine sand	E11	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	18	-1282.14	914.73	-104.030	39.235	Treatment	Final	Estuarine sand	E12	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	19	-1296.08	747.93	-165.752	10.414	Treatment	Final	Estuarine sand	E13	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	20	-1004.65		-112.569	30.396	Control	Initial	Estuarine sand	E7	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	21	-1387.04		-99.728	39.192	Control	Initial	Estuarine sand	E9	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	22	-1100.87		-331.326	34.288	Control	Initial	Estuarine sand	E10	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	23	-1160.45		-78.780	20.063	Control	Initial	Estuarine sand	E6	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	24	-1428.24		-318.731	49.384	Treatment	Initial	Estuarine sand	E14	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	25	-882.33		-56.133	47.506	Treatment	Initial	Estuarine sand	E15	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	26	-1160.32		-78.780	20.063	Treatment	Initial	Estuarine sand	E11	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	27	-391.60		-84.933	23.950	Treatment	Initial	Estuarine sand	E12	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	28	-444.60		-87.543	46.461	Treatment	Initial	Estuarine sand	E13	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Tauranga_Harbour	laboratory	29	-334.67		-29.348	0.000	Control	Final	Estuarine sand	E7	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	30	-774.82		-67.779	-2.947	Control	Final	Estuarine sand	E9	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	31	-604.65		-86.102	-2.361	Control	Final	Estuarine sand	E10	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	32	-1006.28		-58.183	-7.181	Control	Final	Estuarine sand	E6	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	33	-895.99		-55.521	-1.919	Control	Final	Estuarine sand	E8	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Tauranga_Harbour	laboratory	34	-852.63		-134.332	43.557	Treatment	Final	Estuarine sand	E14	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	35	-196.36		-49.772	28.888	Treatment	Final	Estuarine sand	E15	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	36	-618.94		-116.667	22.052	Treatment	Final	Estuarine sand	E11	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	37	-367.40		-88.985	42.287	Treatment	Final	Estuarine sand	E12	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Tauranga_Harbour	laboratory	38	-548.15		-112.945	0.903	Treatment	Final	Estuarine sand	E13	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	39	-888.92	364.94	-15.832	-35.503	Control	Initial	Subtidal silt	S10	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	40	-759.63	52.65	-14.916	-64.886	Control	Initial	Subtidal silt	S7	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	41	-730.17	314.69	21.401	-35.020	Control	Initial	Subtidal silt	S11	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	42	-821.89	500.09	16.199	-26.680	Control	Initial	Subtidal silt	S15	Dark	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	43	-524.25	38.56	-3.770	-64.712	Treatment	Initial	Subtidal silt	S9	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	44	-812.81	287.34	26.518	-43.517	Treatment	Initial	Subtidal silt	S12	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	45	-628.48	6.21	-24.117	-64.981	Treatment	Initial	Subtidal silt	S13	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	46	-696.21	351.59	-29.334	-65.512	Treatment	Initial	Subtidal silt	S16	Dark	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	47	-634.66	152.25	-18.468	-13.650	Control	Final	Subtidal silt	S10	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	48	-1048.98	723.11	-2.645	-2.228	Control	Final	Subtidal silt	S7	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	49	-960.99	704.12	7.338	1.601	Control	Final	Subtidal silt	S11	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	50	-963.78	909.51	-24.299	-21.021	Control	Final	Subtidal silt	S15	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	51	-996.72	716.86	-63.038	-15.151	Control	Final	Subtidal silt	S14	Dark	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	52	-981.44	748.23	-1.358	41.976	Treatment	Final	Subtidal silt	S9	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	53	-1174.49	1361.70	-1.520	53.891	Treatment	Final	Subtidal silt	S12	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	54	-965.85	1718.04	-12.414	17.379	Treatment	Final	Subtidal silt	S13	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	55	-1054.42	1651.37	4.785	34.452	Treatment	Final	Subtidal silt	S16	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	56	-1087.75	1020.65	1.319	39.577	Treatment	Final	Subtidal silt	S2	Dark	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	57	-523.98		-10.995	-15.493	Control	Initial	Subtidal silt	S10	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	58	-706.97		12.478	-18.023	Control	Initial	Subtidal silt	S7	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	59	-415.48		21.348	-15.344	Control	Initial	Subtidal silt	S11	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	60	-321.80		35.812	18.693	Control	Initial	Subtidal silt	S15	Light	35	0.3	19.7	0.3	540	66	8.10	0.02	3910	30	4380	30	132000	29000	188	7.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	61	-485.68		33.718	-10.428	Treatment	Initial	Subtidal silt	S9	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	62	-525.47		15.200	-25.564	Treatment	Initial	Subtidal silt	S12	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	63	-622.27		-10.993	-14.657	Treatment	Initial	Subtidal silt	S13	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	64	-344.62		28.445	-23.111	Treatment	Initial	Subtidal silt	S16	Light	35	0.3	19.7	0.3	558	55	8.10	0.02	3910	40	4380	40	137000	27000	189	16.0	9	21.77	666.20	668.47	3497.14	391.09	4373.79	6.07	9.35
Hauraki_Gulf	laboratory	65	-482.41		-4.881	-6.438	Control	Final	Subtidal silt	S10	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	66	-325.87		-8.459	-0.282	Control	Final	Subtidal silt	S7	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	67	-256.87		0.407	1.356	Control	Final	Subtidal silt	S11	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	68	-54.27		-1.960	0.392	Control	Final	Subtidal silt	S15	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	69	-279.86		-30.276	-3.409	Control	Final	Subtidal silt	S14	Light	35	0.3	19.7	0.3	632	40	8.10	0.02	3870	90	4330	90	17700	9700	5	3.3	9	21.55	659.38	661.63	3461.37	387.09	4330.01	6.01	9.26
Hauraki_Gulf	laboratory	70	-233.21		1.735	30.200	Treatment	Final	Subtidal silt	S9	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	71	187.21		19.039	65.492	Treatment	Final	Subtidal silt	S12	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	72	752.19		28.770	52.060	Treatment	Final	Subtidal silt	S13	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	73	596.95		4.458	40.619	Treatment	Final	Subtidal silt	S16	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09
Hauraki_Gulf	laboratory	74	-67.10		8.501	54.099	Treatment	Final	Subtidal silt	S2	Light	35	0.3	19.7	0.3	1324	76	7.87	0.03	4160	30	4440	40	57000	27000	156	2.7	9	40.86	1250.26	1254.53	3864.65	254.49	4434.40	3.95	6.09