Citation:

PANGAEA.840479

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Abstract:

Research so far has provided little evidence that benthic biogeochemical cycling is affected by ocean acidification under realistic climate change scenarios. We measured nutrient exchange and sediment community oxygen consumption (SCOC) rates to estimate nitrification in natural coastal permeable and fine sandy sediments under pre-phytoplankton bloom and bloom conditions. Ocean acidification, as mimicked in the laboratory by a realistic pH decrease of 0.3, significantly reduced SCOC on average by 60% and benthic nitrification rates on average by 94% in both sediment types in February (pre-bloom period), but not in April (bloom period). No changes in macrofauna functional community (density, structural and functional diversity) were observed between ambient and acidified conditions, suggesting that changes in benthic biogeochemical cycling were predominantly mediated by changes in the activity of the microbial community during the short-term incubations (14 days), rather than by changes in engineering effects of bioturbating and bio-irrigating macrofauna. As benthic nitrification makes up the gross of ocean nitrification, a slowdown of this nitrogen cycling pathway in both permeable and fine sediments in winter, could therefore have global impacts on coupled nitrification-denitrification and hence eventually on pelagic nutrient availability.

Keyword(s):

Abra alba; Bathyporeia elegans; Benthos; Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (<20 L); Coast and continental shelf; Community composition and diversity; Entire community; Glycera alba; Laboratory experiment; Macoma balthica; Magelona johnstoni; Magelona mirabilis; Nephtys cirrosa; Nephtys hombergii; North Atlantic; Oligochaeta sp.; Other metabolic rates; Respiration; Scoloplos armiger; Sigalion mathildae; Soft-bottom community; Spionida sp.; Tellina fabula; Temperate; Urothoe brevicornis

Related to:

Braeckman, Ulrike; Van Colen, Carl; Guilini, Katja; Van Gansbeke, D; Soetaert, Karline; Vincx, Magda; Vanaverbeke, Jan; Vopel, Kay (2014): Empirical Evidence Reveals Seasonally Dependent Reduction in Nitrification in Coastal Sediments Subjected to Near Future Ocean Acidification. PLoS ONE, 9(10), e108153, https://doi.org/10.1371/journal.pone.0108153.s002

Original version:

Braeckman, Ulrike (2014): Ocean acidification effects on nitrification in natural sediment communities from Belgian part of the North Sea. VLIZ, https://doi.org/10.14284/1

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Median Latitude: 51.296055 * Median Longitude: 2.714165 * South-bound Latitude: 51.158780 * West-bound Longitude: 2.620000 * North-bound Latitude: 51.433330 * East-bound Longitude: 2.808330

Date/Time Start: 2012-02-13T00:00:00 * Date/Time End: 2012-04-18T00:00:00

Event(s):

115bis * Latitude: 51.158780 * Longitude: 2.620000 * Date/Time Start: 2012-02-13T00:00:00 * Date/Time End: 2012-04-18T00:00:00 * Method/Device: Experiment (EXP)

330 * Latitude: 51.433330 * Longitude: 2.808330 * Date/Time Start: 2012-02-13T00:00:00 * Date/Time End: 2012-04-18T00:00:00 * Method/Device: Experiment (EXP)

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) 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 is 2014-12-04.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Sample ID	Sample ID		Braeckman, Ulrike
3	Experiment	Exp		Braeckman, Ulrike
4	Date	Date		Braeckman, Ulrike		field sampling
5	Date/time start	Date/time start		Braeckman, Ulrike
6	Date/time end	Date/time end		Braeckman, Ulrike
7	Community, oxygen consumption	Comm O2 cons	µmol/m²/h	Braeckman, Ulrike
8	Ammonium, flux	[NH4]+ flux	mmol/m²/day	Braeckman, Ulrike
9	Nitrate, flux	[NO3]- flux	µmol/m²/day	Braeckman, Ulrike
10	Nitrification, oxygen consumption	NIT	mmol/m²/day	Braeckman, Ulrike	Estimated from mass budget
11	Nitrogen mineralization	N mineraliz	mmol/m²/day	Braeckman, Ulrike	Estimated from mass budget
12	Chlorophyll a	Chl a	µg/g	Braeckman, Ulrike
13	Replicate	Repl		Braeckman, Ulrike		core
14	Treatment	Treat		Braeckman, Ulrike
15	Diameter	Ø	mm	Braeckman, Ulrike		core
16	Genus	Genus		Braeckman, Ulrike
17	Species	Species		Braeckman, Ulrike
18	Individuals	Ind	#	Braeckman, Ulrike		core
19	Biomass, wet mass	Biom wm	g	Braeckman, Ulrike		core
20	Abundance per area	Abund a	#/m²	Braeckman, Ulrike
21	pH	pH		Braeckman, Ulrike	Potentiometric	NBS scale
22	pH, standard error	pH std e	±	Braeckman, Ulrike	Potentiometric	NBS scale
23	Temperature, water	Temp	°C	Braeckman, Ulrike
24	Temperature, water, standard error	T std e	±	Braeckman, Ulrike
25	Salinity	Sal		Braeckman, Ulrike
26	Salinity, standard error	Sal std e	±	Braeckman, Ulrike
27	Oxygen	O2	µmol/l	Braeckman, Ulrike
28	Oxygen, standard error	O2 std e	±	Braeckman, Ulrike
29	Alkalinity, total	AT	µmol/kg	Braeckman, Ulrike	Potentiometric titration
30	Alkalinity, total, standard error	AT std e	±	Braeckman, Ulrike	Potentiometric titration
31	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Braeckman, Ulrike	Calculated using CO2SYS
32	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error	pCO2water_SST_wet std e	±	Braeckman, Ulrike	Calculated using CO2SYS
33	Carbon, inorganic, dissolved	DIC	µmol/kg	Braeckman, Ulrike	Calculated using CO2SYS
34	Carbon, inorganic, dissolved, standard error	DIC std e	±	Braeckman, Ulrike	Calculated using CO2SYS
35	Aragonite saturation state	Omega Arg		Braeckman, Ulrike	Calculated using CO2SYS
36	Aragonite saturation state, standard error	Omega Arg std e	±	Braeckman, Ulrike	Calculated using CO2SYS
37	Calcite saturation state	Omega Cal		Braeckman, Ulrike	Calculated using CO2SYS
38	Calcite saturation state, standard error	Omega Cal std e	±	Braeckman, Ulrike	Calculated using CO2SYS
39	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
40	pH	pH		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)	total scale
41	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
42	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)
43	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)
44	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
45	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
46	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
47	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
48	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:

3558 data points

Data

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

1 Event	2 Sample ID	3 Exp	4 Date (field sampling)	5 Date/time start	6 Date/time end	7 Comm O2 cons [µmol/m²/h]	8 [NH4]+ flux [mmol/m²/day]	9 [NO3]- flux [µmol/m²/day]	10 NIT [mmol/m²/day] (Estimated from mass budget)	11 N mineraliz [mmol/m²/day] (Estimated from mass budget)	12 Chl a [µg/g]	13 Repl (core)	14 Treat	15 Ø [mm] (core)	16 Genus	17 Species	18 Ind [#] (core)	19 Biom wm [g] (core)	20 Abund a [#/m²]	21 pH (NBS scale, Potentiometric)	22 pH std e [±] (NBS scale, Potentiometric)	23 Temp [°C]	24 T std e [±]	25 Sal	26 Sal std e [±]	27 O2 [µmol/l]	28 O2 std e [±]	29 AT [µmol/kg] (Potentiometric titration)	30 AT std e [±] (Potentiometric titration)	31 pCO2water_SST_wet [µatm] (Calculated using CO2SYS)	32 pCO2water_SST_wet std e [±] (Calculated using CO2SYS)	33 DIC [µmol/kg] (Calculated using CO2SYS)	34 DIC std e [±] (Calculated using CO2SYS)	35 Omega Arg (Calculated using CO2SYS)	36 Omega Arg std e [±] (Calculated using CO2SYS)	37 Omega Cal (Calculated using CO2SYS)	38 Omega Cal std e [±] (Calculated using CO2SYS)	39 CSC flag (Calculated using seacarb afte...)	40 pH (total scale, Calculated using...)	41 CO2 [µmol/kg] (Calculated using seacarb afte...)	42 pCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	43 fCO2water_SST_wet [µatm] (Calculated using seacarb afte...)	44 [HCO3]- [µmol/kg] (Calculated using seacarb afte...)	45 [CO3]2- [µmol/kg] (Calculated using seacarb afte...)	46 DIC [µmol/kg] (Calculated using seacarb afte...)	47 Omega Arg (Calculated using seacarb afte...)	48 Omega Cal (Calculated using seacarb afte...)
115bis	1	1	2012-02-13	2012-02-13	2012-03-02	296.948	2.253	-10.791	-0.726	1.527	0.910	A	acidified	100						7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02	384.512	4.351	-6563.719	-0.773	3.578	0.440	B	acidified	100						7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	3	1	2012-02-13	2012-02-13	2012-03-02	643.198	0.000	-6626.416	4.101	4.101	0.321	C	Control	100						7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02	397.599	1.336	-773.145	0.654	1.990	0.261	D	Control	100						7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
330	5	1	2012-02-13	2012-02-13	2012-03-02	56.896	0.839	-7691.885	0.920	3.444	0.048	A	acidified	190						7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
330	6	1	2012-02-13	2012-02-13	2012-03-02	85.746	0.000	-10250.063	1.461	4.535	0.000	B	acidified	190						7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
330	7	1	2012-02-13	2012-02-13	2012-03-02	483.640	0.000	-8999.771	5.878	6.406	0.099	C	Control	190						7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
330	8	1	2012-02-13	2012-02-13	2012-03-02	352.844	0.000	-7716.986	4.344	5.126	0.000	D	Control	190						7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	9	2	2012-04-18	2012-04-18	2012-05-08	676.572	1.747	-4017.291	1.241	2.988	7.862	A	acidified	100						7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08	699.065	1.806	-3097.080	1.107	2.913	14.194	B	acidified	100						7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	11	2	2012-04-18	2012-04-18	2012-05-08	896.586	2.762	-1364.935	0.587	3.349	1.139	C	Control	100						8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08	937.793	0.094	-1879.730	3.206	3.300	0.474	D	Control	100						8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	13	2	2012-04-18	2012-04-18	2012-05-08	0.000	0.995	-13.159	-0.822	0.173	0.158	A	acidified	190						7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	14	2	2012-04-18	2012-04-18	2012-05-08	9.017	0.330	-12.499	-0.221	0.109	0.098	B	acidified	190						7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	15	2	2012-04-18	2012-04-18	2012-05-08	199.751	0.149	-950.214	1.236	1.385	0.177	C	Control	190						8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08	0.000	0.143	-15.231	-0.115	0.029	0.085	D	Control	190						8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified			Abra alba (mollusk)	2	0.5065	254.655	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified			Macoma balthica (mollusk)	5	2.0755	636.639	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified			Magelona johnstoni (polychaete)	2	0.0021	254.655	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified			Scoloplos armiger (polychaete)	1	0.0043	127.328	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02							B	acidified			Macoma balthica (mollusk)	1	0.7215	127.328	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02							B	acidified			Magelona johnstoni (polychaete)	3	0.0039	381.983	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02							B	acidified			Scoloplos armiger (polychaete)	1	0.0019	127.328	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	3	1	2012-02-13	2012-02-13	2012-03-02							C	Control			Macoma balthica (mollusk)	7	3.4155	891.294	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	3	1	2012-02-13	2012-02-13	2012-03-02							C	Control			Magelona johnstoni (polychaete)	5	0.0088	636.639	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control			Abra alba (mollusk)	1	0.4964	127.328	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control			Macoma balthica (mollusk)	1	0.5031	127.328	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control			Magelona johnstoni (polychaete)	12	0.0715	1527.933	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control			Scoloplos armiger (polychaete)	3	0.0154	381.983	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control			Tellina fabula (mollusk)	1	0.0487	127.328	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
330	5	1	2012-02-13	2012-02-13	2012-03-02							A	acidified			Nephtys cirrosa (polychaete)	1	0.0239	35.271	7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
330	8	1	2012-02-13	2012-02-13	2012-03-02							D	Control			Nephtys cirrosa (polychaete)	1	0.0114	35.271	7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	9	2	2012-04-18	2012-04-18	2012-05-08							A	acidified			Macoma balthica (mollusk)	3	1.7950	381.983	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	9	2	2012-04-18	2012-04-18	2012-05-08							A	acidified			Magelona johnstoni (polychaete)	3	0.0173	381.983	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	9	2	2012-04-18	2012-04-18	2012-05-08							A	acidified			Nephtys hombergii (polychaete)	1	0.1172	127.328	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08							B	acidified			Glycera alba (polychaete)	1	0.0142	127.328	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08							B	acidified			Macoma balthica (mollusk)	2	1.2125	254.655	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08							B	acidified			Magelona johnstoni (polychaete)	2	0.0166	254.655	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	11	2	2012-04-18	2012-04-18	2012-05-08							C	Control			Macoma balthica (mollusk)	1	0.6025	127.328	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control			Magelona johnstoni (polychaete)	5	0.0246	636.639	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control			Nephtys hombergii (polychaete)	1	0.1985	127.328	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control			Scoloplos armiger (polychaete)	1	0.0177	127.328	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control			Tellina fabula (mollusk)	1	0.0537	127.328	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified			Glycera alba (polychaete)	1	0.0024	35.271	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified			Nephtys cirrosa (polychaete)	1	0.0245	35.271	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified			Urothoe brevicornis (	1	0.0025	35.271	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	14	2	2012-04-18	2012-04-18	2012-05-08							B	acidified			Nephtys cirrosa (polychaete)	1	0.0264	35.271	7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	15	2	2012-04-18	2012-04-18	2012-05-08							C	Control			Nephtys cirrosa (polychaete)	1	0.1276	35.271	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08							D	Control			Bathyporeia elegans (echinoderm)	2	0.0026	70.542	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08							D	Control			Spionida sp. (polychaete)	1	0.0032	35.271	8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified		Macoma	Macoma balthica (mollusk)	5	2.0755		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified		Scoloplos	Scoloplos armiger (polychaete)	1	0.0043		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified		Magelona	Magelona johnstoni (polychaete)	2	0.0021		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	1	1	2012-02-13	2012-02-13	2012-03-02							A	acidified		Abra	Abra alba (mollusk)	2	0.5065		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02							B	acidified		Macoma	Macoma balthica (mollusk)	1	0.7215		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02							B	acidified		Scoloplos	Scoloplos armiger (polychaete)	1	0.0019		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	2	1	2012-02-13	2012-02-13	2012-03-02							B	acidified		Magelona	Magelona johnstoni (polychaete)	3	0.0039		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
115bis	3	1	2012-02-13	2012-02-13	2012-03-02							C	Control		Macoma	Macoma balthica (mollusk)	7	3.4155		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	3	1	2012-02-13	2012-02-13	2012-03-02							C	Control		Magelona	Magelona johnstoni (polychaete)	5	0.0088		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	3	1	2012-02-13	2012-02-13	2012-03-02							C	Control		Oligochaeta	Oligochaeta sp. (polychaete)	1	0.0002		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Abra	Abra alba (mollusk)	1	0.4964		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Macoma	Macoma balthica (mollusk)	1	0.5031		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Tellina	Tellina fabula (mollusk)	1	0.0487		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Scoloplos	Scoloplos armiger (polychaete)	3	0.0154		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Sigalion	Sigalion mathildae (polychaete)	1	0.0010		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	4	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Magelona	Magelona johnstoni (polychaete)	12	0.0715		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
330	5	1	2012-02-13	2012-02-13	2012-03-02							A	acidified		Nephtys	Nephtys cirrosa (polychaete)	1	0.0239		7.68	0.11	6.1	0.1	32.33	0.78	293.65	13.81	2909.52	66.90	1381.38	327.51	2770.55	113.29	2.15	0.66	3.28	1.00	26	7.58	82.11	1618.93	1612.46	2785.48	51.98	2919.56	0.79	1.26
330	8	1	2012-02-13	2012-02-13	2012-03-02							D	Control		Nephtys	Nephtys cirrosa (polychaete)	1	0.0114		7.99	0.07	6.0	0.1	32.65	0.67	312.28	6.72	2849.30	58.24	571.91	122.23	2542.70	67.19	3.86	0.47	5.88	0.72	26	7.89	37.62	740.58	737.62	2609.95	99.94	2747.51	1.52	2.41
115bis	9	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Macoma	Macoma balthica (mollusk)	3	1.7950		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	9	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Nephtys	Nephtys hombergii (polychaete)	1	0.1172		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	9	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Magelona	Magelona johnstoni (polychaete)	3	0.0173		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08							B	acidified		Macoma	Macoma balthica (mollusk)	2	1.2125		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08							B	acidified		Glycera	Glycera alba (polychaete)	1	0.0142		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	10	2	2012-04-18	2012-04-18	2012-05-08							B	acidified		Magelona	Magelona johnstoni (polychaete)	2	0.0166		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
115bis	11	2	2012-04-18	2012-04-18	2012-05-08							C	Control		Macoma	Macoma balthica (mollusk)	1	0.6025		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Tellina	Tellina fabula (mollusk)	1	0.0537		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Nephtys	Nephtys hombergii (polychaete)	1	0.1985		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Scoloplos	Scoloplos armiger (polychaete)	1	0.0177		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
115bis	12	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Magelona	Magelona johnstoni (polychaete)	5	0.0246		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Nephtys	Nephtys cirrosa (polychaete)	1	0.0245		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Glycera	Glycera alba (polychaete)	1	0.0024		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Magelona	Magelona mirabilis (polychaete)	1	0.0077		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	13	2	2012-04-18	2012-04-18	2012-05-08							A	acidified		Urothoe	Urothoe brevicornis (echinoderm)	1	0.0025		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	14	2	2012-04-18	2012-04-18	2012-05-08							B	acidified		Nephtys	Nephtys cirrosa (polychaete)	1	0.0264		7.73	0.03	9.6	0.1	30.87	0.18	274.03	8.22	2744.16	36.54	1132.81	104.18	2601.18	38.05	2.12	0.15	3.25	0.23	26	7.62	64.51	1422.03	1416.60	2602.93	59.18	2726.62	0.91	1.44
330	15	2	2012-04-18	2012-04-18	2012-05-08							C	Control		Nephtys	Nephtys juv. (polychaete)	2	0.0014		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	15	2	2012-04-18	2012-04-18	2012-05-08							C	Control		Nephtys	Nephtys cirrosa (polychaete)	1	0.1276		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Nephtys	Nephtys juv. (polychaete)	1	0.0014		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Glycera	Glycera juv. (polychaete)	1	0.0006		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Bathyporeia	Bathyporeia elegans (echinoderm)	2	0.0026		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94
330	16	2	2012-04-18	2012-04-18	2012-05-08							D	Control		Spionida	Spionida sp. (polychaete)	1	0.0032		8.07	0.03	9.5	0.1	31.39	0.35	293.50	3.95	2696.80	43.20	439.61	28.49	2367.06	30.12	4.08	0.25	6.24	0.37	26	7.96	27.12	597.64	595.35	2406.75	121.11	2554.98	1.86	2.94