Citation:

bg-13-3901-2016

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Abstract:

Nitrogen fixation by filamentous cyanobacteria supplies significant amounts of new nitrogen (N) to the Baltic Sea. This balances N loss processes such as denitrification and anammox, and forms an important N source supporting primary and secondary production in N-limited post-spring bloom plankton communities. Laboratory studies suggest that filamentous diazotrophic cyanobacteria growth and N2-fixation rates are sensitive to ocean acidification, with potential implications for new N supply to the Baltic Sea. In this study, our aim was to assess the effect of ocean acidification on diazotroph growth and activity as well as the contribution of diazotrophically fixed N to N supply in a natural plankton assemblage. We enclosed a natural plankton community in a summer season in the Baltic Sea near the entrance to the Gulf of Finland in six large-scale mesocosms (volume ∼ 55m3) and manipulated fCO2 over a range relevant for projected ocean acidification by the end of this century (average treatment fCO2: 365–1231µatm).

Related to:

Paul, Allanah Joy; Schulz, Kai Georg; Achterberg, Eric Pieter; Hellemann, Dana; Nausch, Monika; Boxhammer, Tim; Bach, Lennart Thomas; Trense, Yves (2016): KOSMOS Finland 2012 mesocosm study: carbonate chemistry, particulate and dissolved matter pools, and phytoplankton community composition using marker pigments (CHEMTAX) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.863032

Project(s):

Biological Impacts of Ocean Acidification (BIOACID)

Coverage:

Latitude: 59.858330 * Longitude: 23.258330

Date/Time Start: 2012-06-19T00:00:00 * Date/Time End: 2012-08-04T00:00:00

Event(s):

KOSMOS_2012_Tvaerminne * Latitude: 59.858330 * Longitude: 23.258330 * Date/Time: 2012-06-12T00:00:00 * Method/Device: Mesocosm experiment (MESO)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	DATE/TIME	Date/Time		Paul, Allanah Joy	Geocode
2	Day of experiment	DOE	day	Paul, Allanah Joy
3	Mesocosm label	Meso label		Paul, Allanah Joy
4	Phase	Phase		Paul, Allanah Joy
5	Chaetoceros sp., biomass as carbon	Chaetoceros sp. C	µg/l	Stuhr, Annegret
6	Skeletonema marinoi	S. marinoi	#/l	Stuhr, Annegret	µg/l
7	Aphanizomenon flos-aquae, biomass as carbon	A. flos-aquae C	µg/l	Stuhr, Annegret
8	Aphanizophyll	Aphanizo	µg/l	Boxhammer, Tim
9	δ15N	δ15N	‰ air	Paul, Allanah Joy	suspended particulate material
10	δ15N	δ15N	‰ air	Boxhammer, Tim	sinking particulate material
11	Nitrogen fixation rate	N2 fix	nmol/l/day	Paul, Allanah Joy

License:

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

Size:

1870 data points

Data

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

1 Date/Time	2 DOE [day]	3 Meso label	4 Phase	5 Chaetoceros sp. C [µg/l]	6 S. marinoi [#/l] (µg/l)	7 A. flos-aquae C [µg/l]	8 Aphanizo [µg/l]	9 δ15N [‰ air] (suspended particulate material)	10 δ15N [‰ air] (sinking particulate material)	11 N2 fix [nmol/l/day]
2012-06-19	-3	1	0	0.36	0.20	0.00		5.3		0.0
2012-06-20	-2	1	0
2012-06-21	-1	1	0				0.00	5.6	5.3	0.0
2012-06-22	0	1	0	0.79	0.91	0.00
2012-06-23	1	1	1				0.00	5.7		0.0
2012-06-24	2	1	1	0.63	0.92	0.00
2012-06-25	3	1	1				4.27	5.0	6.0	0.4
2012-06-26	4	1	1	0.40	0.32	0.00
2012-06-27	5	1	1				6.95	5.2	6.1	0.0
2012-06-28	6	1	1	0.01	0.02	0.07
2012-06-29	7	1	1				3.86	5.0	6.5	0.0
2012-06-30	8	1	1
2012-07-01	9	1	1	0.00	0.11	0.09	6.42	5.3	6.5	0.3
2012-07-02	10	1	1
2012-07-03	11	1	1	0.01	0.00	0.69	0.00	3.0	7.4	1.0
2012-07-04	12	1	1
2012-07-05	13	1	1				0.00	3.5	6.9	0.9
2012-07-06	14	1	1
2012-07-07	15	1	1	0.01	0.00	1.25	0.00	1.7	6.3	0.1
2012-07-08	16	1	1
2012-07-09	17	1	2	0.00	0.00	0.59	56.25	7.1	2.5	1.2
2012-07-10	18	1	2
2012-07-11	19	1	2	0.00	0.00	2.25	18.32	7.2	4.8	1.3
2012-07-12	20	1	2
2012-07-13	21	1	2	0.00	0.00	3.07	0.00	4.4	5.5	4.4
2012-07-14	22	1	2
2012-07-15	23	1	2	0.00	0.00	0.32	27.95	4.1	4.4	62.0
2012-07-16	24	1	2
2012-07-17	25	1	2	0.00	0.00	0.01	4.52	4.6	5.6	48.2
2012-07-18	26	1	2
2012-07-19	27	1	2	0.01	0.00	4.91	5.24	3.7	6.1	45.3
2012-07-20	28	1	2
2012-07-21	29	1	2	0.00	0.00	1.09	0.00	4.4	6.6	56.8
2012-07-22	30	1	2
2012-07-23	31	1	3	0.03	0.00	0.03	18.23	4.9	4.6	39.2
2012-07-25	33	1	3	0.02	0.00	0.00	0.00	6.0	6.1	29.5
2012-07-27	35	1	3	0.06	0.00	0.18	0.00	3.6	5.8	8.8
2012-07-29	37	1	3	0.04	0.00	0.01	0.00	4.4	5.1	18.8
2012-07-31	39	1	3	0.06	0.00	0.01	0.00	5.2	5.5	2.6
2012-08-02	41	1	3	0.06	0.00	0.02	0.00	3.9	6.2	15.4
2012-08-04	43	1	3	0.08	0.00	0.00	16.24	4.6	5.0	10.2
2012-06-19	-3	5	0	0.32	0.95	0.00		4.4		0.0
2012-06-20	-2	5	0
2012-06-21	-1	5	0				0.00	4.8	6.0	0.0
2012-06-22	0	5	0	0.37	0.92	0.00
2012-06-23	1	5	1				0.00	6.2	5.9	0.0
2012-06-24	2	5	1	0.76	0.74	0.05
2012-06-25	3	5	1				0.00	5.2	5.8	0.0
2012-06-26	4	5	1	0.09	0.24	0.02
2012-06-27	5	5	1				4.84	5.5	6.0	0.0
2012-06-28	6	5	1	0.01	0.07	0.11
2012-06-29	7	5	1				2.92	4.9	6.8	0.2
2012-06-30	8	5	1
2012-07-01	9	5	1	0.00	0.00	0.88	4.88	5.4	6.7	0.0
2012-07-02	10	5	1
2012-07-03	11	5	1	0.01	0.01	0.93	0.00	3.1	7.3	0.8
2012-07-04	12	5	1
2012-07-05	13	5	1	0.00	0.00	0.26	0.00	4.5	7.2	0.3
2012-07-06	14	5	1
2012-07-07	15	5	1	0.00	0.00	0.96	0.00	3.1	6.2	0.7
2012-07-08	16	5	1
2012-07-09	17	5	2	0.00	0.00	1.08	7.58	4.1	5.0	1.7
2012-07-10	18	5	2
2012-07-11	19	5	2	0.00	0.00	0.54	7.19	4.9	5.3	1.0
2012-07-12	20	5	2
2012-07-13	21	5	2	0.00	0.00	3.27	0.00	4.2	6.2	2.6
2012-07-14	22	5	2
2012-07-15	23	5	2	0.00	0.00	0.15	0.00	25.0	9.5	58.4
2012-07-16	24	5	2
2012-07-17	25	5	2	0.02	0.00	0.26	0.00	28.2	9.0	44.9
2012-07-18	26	5	2
2012-07-19	27	5	2	0.01	0.00	0.02	0.00	45.1	8.8	40.6
2012-07-20	28	5	2
2012-07-21	29	5	2	0.00	0.00	0.00	0.00	54.4	10.4	60.0
2012-07-22	30	5	2
2012-07-23	31	5	3	0.00	0.00	0.00	3.78	46.4	35.6	35.7
2012-07-25	33	5	3	0.03	0.00	0.09	0.00	53.4	18.9	27.1
2012-07-27	35	5	3	0.02	0.00	0.00	0.00	56.5	16.1	7.0
2012-07-29	37	5	3	0.02	0.00	0.01	0.00	56.3	22.3	18.1
2012-07-31	39	5	3	0.02	0.00	4.54	0.00	55.1	24.7	19.5
2012-08-02	41	5	3	0.01	0.00	0.00	0.00	53.2	27.6	18.2
2012-08-04	43	5	3	0.04	0.00	0.00	0.00	52.8	32.2	15.1
2012-06-19	-3	7	0	0.51	0.81	0.00		5.4		0.0
2012-06-20	-2	7	0
2012-06-21	-1	7	0				0.00	5.5	5.1	0.0
2012-06-22	0	7	0	0.43	0.44	0.11
2012-06-23	1	7	1				0.00	6.2	5.8	0.0
2012-06-24	2	7	1	0.43	0.23	0.07
2012-06-25	3	7	1				0.00	5.5	5.9	0.0
2012-06-26	4	7	1	0.14	0.10	0.33
2012-06-27	5	7	1				3.97	5.4	6.2	0.0
2012-06-28	6	7	1	0.02	0.03	0.17
2012-06-29	7	7	1				3.29	5.0	6.6	0.0
2012-06-30	8	7	1
2012-07-01	9	7	1	0.00	0.00	0.06	4.52	5.1	6.3	0.0
2012-07-02	10	7	1
2012-07-03	11	7	1	0.00	0.00	0.16	0.00	3.0	7.2	0.8
2012-07-04	12	7	1
2012-07-05	13	7	1	0.00	0.00	0.36	0.00	3.3	7.1	0.6
2012-07-06	14	7	1
2012-07-07	15	7	1	0.00	0.00	0.17	0.00	2.6	6.2	0.8
2012-07-08	16	7	1
2012-07-09	17	7	2	0.00	0.00	0.47	41.87	4.4	4.3	0.8
2012-07-10	18	7	2
2012-07-11	19	7	2	0.00	0.00	0.25	10.71	4.0	5.1	0.4
2012-07-12	20	7	2
2012-07-13	21	7	2	0.00	0.00	1.44	0.00	4.7	6.0	3.1
2012-07-14	22	7	2
2012-07-15	23	7	2	0.00	0.00	0.02	0.00	4.2	6.0	58.0
2012-07-16	24	7	2
2012-07-17	25	7	2	0.00	0.00	0.00	0.00	3.7	6.4	63.6
2012-07-18	26	7	2
2012-07-19	27	7	2	0.00	0.00	0.00	0.00	5.1	7.0	23.9
2012-07-20	28	7	2
2012-07-21	29	7	2	0.00	0.00	2.36	0.00	4.1	6.6	55.3
2012-07-22	30	7	2
2012-07-23	31	7	3	0.00	0.00	0.00	0.00	4.4	5.9	40.9
2012-07-25	33	7	3	0.01	0.00	0.81		2.4		29.4
2012-07-27	35	7	3	0.01	0.00	0.00	0.00	3.7		6.7
2012-07-29	37	7	3	0.03	0.00	0.00	24.92	3.9		21.7
2012-07-31	39	7	3	0.01	0.00	0.01	0.00	4.4		27.5
2012-08-02	41	7	3	0.03	0.00	0.00	0.00	5.4	5.2	22.7
2012-08-04	43	7	3	0.02	0.00	0.16	0.00	3.5		17.4
2012-06-19	-3	6	0	0.55	0.75	0.00		4.5		0.0
2012-06-20	-2	6	0
2012-06-21	-1	6	0				0.00	5.6	6.2	0.0
2012-06-22	0	6	0	0.36	0.64	0.00
2012-06-23	1	6	1				0.00	5.2	6.0	0.0
2012-06-24	2	6	1	0.66	0.43	0.06
2012-06-25	3	6	1				0.00	5.4	6.0	0.2
2012-06-26	4	6	1	0.28	0.13	0.29
2012-06-27	5	6	1				4.14	5.6		0.0
2012-06-28	6	6	1	0.02	0.04	0.37
2012-06-29	7	6	1				1.20	4.9	6.9	0.0
2012-06-30	8	6	1
2012-07-01	9	6	1	0.01	0.00	1.50	6.27	5.5	6.5	0.2
2012-07-02	10	6	1
2012-07-03	11	6	1	0.00	0.01	0.34	0.00	2.9	7.2	0.9
2012-07-04	12	6	1
2012-07-05	13	6	1	0.00	0.00	0.59	0.00	3.3	7.2	0.8
2012-07-06	14	6	1
2012-07-07	15	6	1	0.06	0.05	0.33	0.00	2.7	6.7	0.8
2012-07-08	16	6	1
2012-07-09	17	6	2	0.01	0.00	0.40	28.59	4.6	4.7	1.0
2012-07-10	18	6	2
2012-07-11	19	6	2	0.00	0.00	2.20	5.31	5.1	6.1	0.6
2012-07-12	20	6	2
2012-07-13	21	6	2	0.00	0.00	0.99	0.00	4.1	6.5	2.6
2012-07-14	22	6	2
2012-07-15	23	6	2	0.00	0.00	0.07	0.00	20.8	9.2	61.9
2012-07-16	24	6	2
2012-07-17	25	6	2	0.00	0.00	0.10	0.00	24.2	8.8	50.2
2012-07-18	26	6	2
2012-07-19	27	6	2	0.01	0.00	1.08	0.00	38.9	8.4	42.8
2012-07-20	28	6	2
2012-07-21	29	6	2	0.00	0.00	0.48	0.00	44.8	10.2	50.9
2012-07-22	30	6	2
2012-07-23	31	6	3	0.01	0.00	0.08	6.05	43.9	24.3	41.1
2012-07-25	33	6	3	0.03	0.00	0.30	0.00	45.2	20.2	33.4
2012-07-27	35	6	3	0.07	0.00	1.23	0.00	49.2	18.6	12.1
2012-07-29	37	6	3	0.08	0.00	1.67	3.26	44.1	33.2	26.6
2012-07-31	39	6	3	0.07	0.00	0.11	0.00	43.7	25.1	18.9
2012-08-02	41	6	3	0.08	0.00	0.01	0.00	45.8	25.7	26.2
2012-08-04	43	6	3	0.08	0.00	0.00	4.88	45.5	34.5	11.0
2012-06-19	-3	3	0	0.37	1.05	0.00		4.7		0.0
2012-06-20	-2	3	0
2012-06-21	-1	3	0				0.00	4.8	6.1	0.0
2012-06-22	0	3	0	0.50	0.87	0.00
2012-06-23	1	3	1				0.00	6.5	5.7	0.0
2012-06-24	2	3	1
2012-06-25	3	3	1				0.00	5.3	5.8	0.0
2012-06-26	4	3	1	0.25	0.42	0.02
2012-06-27	5	3	1				4.41	6.3	6.2	0.2
2012-06-28	6	3	1	0.01	0.07	0.19
2012-06-29	7	3	1				0.00	5.3	6.8	0.2
2012-06-30	8	3	1
2012-07-01	9	3	1	0.01	0.00	0.52	7.85	5.2	6.4	0.0
2012-07-02	10	3	1
2012-07-03	11	3	1	0.02	0.00	0.32	0.00	3.0	7.5	0.6
2012-07-04	12	3	1
2012-07-05	13	3	1	0.01	0.00	0.23	0.00	3.0	7.0	0.6
2012-07-06	14	3	1
2012-07-07	15	3	1	0.01	0.00	0.79	0.00	2.6	6.7	1.1
2012-07-08	16	3	1
2012-07-09	17	3	2	0.01	0.00	0.45	29.81	4.3	4.1	1.3
2012-07-10	18	3	2
2012-07-11	19	3	2	0.00	0.00	0.98	10.20	4.3	5.3	0.3
2012-07-12	20	3	2
2012-07-13	21	3	2	0.00	0.00	0.37	0.00	4.5	6.6	2.9
2012-07-14	22	3	2
2012-07-15	23	3	2	0.00	0.00	0.13	0.00	28.3	11.4	60.6
2012-07-16	24	3	2
2012-07-17	25	3	2	0.00	0.00	0.01	0.00	32.4	9.5	48.3
2012-07-18	26	3	2
2012-07-19	27	3	2	0.00	0.00	0.00	0.00	47.7	9.1	42.4
2012-07-20	28	3	2
2012-07-21	29	3	2	0.01	0.00	0.00	0.00	56.7	11.0	56.1
2012-07-22	30	3	2
2012-07-23	31	3	3	0.02	0.00	0.00	0.89	57.4	42.0	6.6
2012-07-25	33	3	3	0.01	0.00	0.00	0.00	59.0	30.1	34.2
2012-07-27	35	3	3	0.07	0.00	0.60	0.00	62.3	20.8	5.5
2012-07-29	37	3	3	0.06	0.00	0.14	0.00	51.7	30.9	10.7
2012-07-31	39	3	3	0.02	0.00	1.96	2.98	57.1	32.4	36.2
2012-08-02	41	3	3	0.08	0.00	1.49	0.00	57.4	30.0	6.0
2012-08-04	43	3	3	0.06	0.00	0.01	0.00	58.7	43.6	3.4
2012-06-19	-3	8	0	0.49	0.98	0.00				0.0
2012-06-20	-2	8	0
2012-06-21	-1	8	0				0.00	4.7	6.0	0.0
2012-06-22	0	8	0	0.73	0.89	0.00
2012-06-23	1	8	1				0.00			0.0
2012-06-24	2	8	1	1.00	0.66	0.00
2012-06-25	3	8	1				0.00	5.9	6.0	0.0
2012-06-26	4	8	1	0.44	0.44	0.35
2012-06-27	5	8	1				3.69	5.6	5.9	0.0
2012-06-28	6	8	1	0.02	0.10	0.07
2012-06-29	7	8	1				4.15	4.7	6.7	0.0
2012-06-30	8	8	1
2012-07-01	9	8	1	0.00	0.02	0.81	7.71	4.8	6.4	0.2
2012-07-02	10	8	1
2012-07-03	11	8	1	0.00	0.02	0.54	0.00	5.6	7.4	0.2
2012-07-04	12	8	1
2012-07-05	13	8	1	0.01	0.00	0.36	0.00	3.3	6.9	0.7
2012-07-06	14	8	1
2012-07-07	15	8	1	0.04	0.00	0.12	0.00	2.9	6.7	0.6
2012-07-08	16	8	1
2012-07-09	17	8	2	0.01	0.00	1.47	55.51	4.3	3.6	1.5
2012-07-10	18	8	2
2012-07-11	19	8	2	0.01	0.00	0.07	5.78	4.2	5.3	0.7
2012-07-12	20	8	2
2012-07-13	21	8	2	0.00	0.00	0.21	0.00	4.2	5.9	3.3
2012-07-14	22	8	2
2012-07-15	23	8	2	0.01	0.00	0.02	0.00	25.9	10.2	62.0
2012-07-16	24	8	2
2012-07-17	25	8	2	0.00	0.00	0.00	0.00	29.1	8.7	49.5
2012-07-18	26	8	2
2012-07-19	27	8	2	0.02	0.00	0.43	0.00	44.7	9.0	38.1
2012-07-20	28	8	2
2012-07-21	29	8	2	0.03	0.00	0.01	0.00	52.7	10.5	80.6
2012-07-22	30	8	2
2012-07-23	31	8	3	0.00	0.00	0.00	8.38	43.7	26.0	44.9
2012-07-25	33	8	3	0.05	0.00	0.21	0.00	45.6	24.3	36.3
2012-07-27	35	8	3	0.06	0.00	2.74	0.00	51.2	21.9	10.8
2012-07-29	37	8	3	0.09	0.00	4.67	2.42	51.9	30.4	31.2
2012-07-31	39	8	3	0.11	0.00	0.57	0.00	52.3	26.5	31.1
2012-08-02	41	8	3	0.18	0.00	0.02	3.32	54.3	30.3	24.8
2012-08-04	43	8	3	0.16	0.00	0.60	6.30	49.7	38.6	23.3
2012-06-19	-3	10	0					5.5		0.0
2012-06-20	-2	10	0
2012-06-21	-1	10	0					5.5		0.0
2012-06-22	0	10	0
2012-06-23	1	10	1					6.2		0.0
2012-06-24	2	10	1
2012-06-25	3	10	1					5.4		1.6
2012-06-26	4	10	1
2012-06-27	5	10	1					5.6		4.6
2012-06-28	6	10	1
2012-06-29	7	10	1					5.3		0.9
2012-06-30	8	10	1
2012-07-01	9	10	1					5.3		4.2
2012-07-02	10	10	1
2012-07-03	11	10	1					3.5		2.2
2012-07-04	12	10	1
2012-07-05	13	10	1					4.9		4.8
2012-07-06	14	10	1
2012-07-07	15	10	1					2.7		37.9
2012-07-08	16	10	1
2012-07-09	17	10	2					4.2		11.0
2012-07-10	18	10	2
2012-07-11	19	10	2					5.6		3.2
2012-07-12	20	10	2
2012-07-13	21	10	2					4.8		5.4
2012-07-14	22	10	2
2012-07-15	23	10	2					5.2		64.0
2012-07-16	24	10	2
2012-07-17	25	10	2					4.9		57.7
2012-07-18	26	10	2
2012-07-19	27	10	2					5.2		43.3
2012-07-20	28	10	2
2012-07-21	29	10	2					5.4		53.0
2012-07-22	30	10	2
2012-07-23	31	10	3					4.9		42.0
2012-07-25	33	10	3					6.8		33.0
2012-07-27	35	10	3					4.9		39.6
2012-07-29	37	10	3					3.9		51.2
2012-07-31	39	10	3					5.1		53.9
2012-08-02	41	10	3					5.4		44.3
2012-08-04	43	10	3					5.0		40.0