Citation:

PANGAEA.993574

Name: Particulate organic carbon, amino acids, combined carbohydrates (>20 µm) and microphytoplankton in surface and underlying water during ELISABETH MANN BORGESE cruise EMB295 (CenBASE) Jul-Aug 2022
Published: 2026-04-17
License: https://creativecommons.org/licenses/by/4.0/
Keywords: air-sea interface; amino acids; Aphanizomenon sp.; Baltic Sea; carbohydrates; Cyanobacteria; Nodularia spumigena; Phytoplankton bloom; sea surface microlayer; Surfactants; synechococcus

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Published: 2026-04-17

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Abstract:

Particulate samples were collected in the Eastern Gotland Basin (Central Baltic Sea) during the CenBASE research cruise EMB295, carried out between June 30th and July 19th 2022. Samples from the sea surface were collected twice a day using a Neuston catamaran equipped with a 20 µm mesh net, sampling the upper 20 cm of the water column. Corresponding reference samples from the underlying water (ULW) were collected at approximately 1 m depth using an ULW net. The biochemical composition of the particulate fraction was assessed through measurements of particulate organic carbon >20µm (POC>20µm), particulate amino acids >20µm (PAA>20µm), and particulate combined carbohydrates >20µm (PCCHO>20µm). POC was measured using an Euro EA elemental analyser. To determine the composition of the microphytoplankton community (>20 µm), samples were preserved with Lugol's solution and analyzed according to the Utermöhl method. Sampling stations were categorized based on the relative abundance of microphytoplankton (>20 µm) and nano- and picophytoplankton (≤20 µm).

Keyword(s):

air-sea interface; amino acids; Aphanizomenon sp.; Baltic Sea; carbohydrates; Cyanobacteria; Nodularia spumigena; Phytoplankton bloom; sea surface microlayer; Surfactants; synechococcus

Supplement to:

Karnatz, Josefine (in review): Biochemial Characteristics of the Sea Surface Microlayer in the Central Baltic Sea and Potential Signatures of Cyanobacterial Blooms.

Project(s):

Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer (BASS)

Funding:

German Research Foundation (DFG), grant/award no. 451574234 : FOR 5267 - Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer (BASS)

Coverage:

Median Latitude: 57.343790 * Median Longitude: 19.907665 * South-bound Latitude: 57.187230 * West-bound Longitude: 19.237650 * North-bound Latitude: 57.449910 * East-bound Longitude: 20.172240

Date/Time Start: 2022-07-06T17:10:29 * Date/Time End: 2022-07-16T05:39:36

Minimum Elevation: -246.0 m * Maximum Elevation: -75.0 m

Event(s):

EMB295_12-4 * Latitude Start: 57.249027 * Longitude Start: 20.087044 * Latitude End: 57.242969 * Longitude End: 20.068835 * Date/Time Start: 2022-07-06T17:10:29 * Date/Time End: 2022-07-06T17:28:55 * Elevation Start: -246.0 m * Elevation End: -244.0 m * Location: Baltic Sea * Campaign: (CenBASE) * Basis: * Method/Device: Waveglider (WVGL)

EMB295_12-5 * Latitude Start: 57.242761 * Longitude Start: 20.068415 * Latitude End: 57.239266 * Longitude End: 20.058337 * Date/Time Start: 2022-07-06T17:40:33 * Date/Time End: 2022-07-06T17:56:34 * Elevation Start: -245.0 m * Elevation End: -243.0 m * Location: Baltic Sea * Campaign: (CenBASE) * Basis: * Method/Device: Bongo net (BONGO)

EMB295_12-8 * Latitude Start: 57.263275 * Longitude Start: 20.097964 * Latitude End: 57.265861 * Longitude End: 20.087652 * Date/Time Start: 2022-07-07T05:04:28 * Date/Time End: 2022-07-07T05:14:00 * Elevation Start: -246.0 m * Elevation End: -246.0 m * Location: Baltic Sea * Campaign: (CenBASE) * Basis: * Method/Device: Waveglider (WVGL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event		Karnatz, Josefine
2	LATITUDE	Latitude		Karnatz, Josefine	Geocode
3	LONGITUDE	Longitude		Karnatz, Josefine	Geocode
4	Classification	Classification		Karnatz, Josefine	microphytoplankton (>20µm) classification
5	Classification	Classification		Karnatz, Josefine	nanophytoplankton (<=20µm) classification
6	Sampling	Sampling		Karnatz, Josefine
7	Depth zone	Depth zone		Karnatz, Josefine
8	Carbon, organic, particulate	POC	µmol/l	Karnatz, Josefine	>20µm
9	Aspartic acid	Asp	nmol/l	Karnatz, Josefine
10	Glutamic acid	Glu	nmol/l	Karnatz, Josefine
11	Serine	Ser	nmol/l	Karnatz, Josefine
12	Glycine	Gly	nmol/l	Karnatz, Josefine
13	Threonine	Thr	nmol/l	Karnatz, Josefine
14	Arginine	Arg	nmol/l	Karnatz, Josefine
15	Alanine	Ala	nmol/l	Karnatz, Josefine
16	gamma-Aminobutyric acid	g-ABA	nmol/l	Karnatz, Josefine
17	Tyrosine	Tyr	nmol/l	Karnatz, Josefine
18	Valine	Val	nmol/l	Karnatz, Josefine
19	Isoleucine	Ile	nmol/l	Karnatz, Josefine
20	Phenylalanine	Phe	nmol/l	Karnatz, Josefine
21	Leucine	Leu	nmol/l	Karnatz, Josefine
22	Amino acids	AA	nmol/l	Karnatz, Josefine	PAA>20µm_sum [nM]
23	Amino acids	AA	nmol/l	Karnatz, Josefine	PAA>20µm_sum [nM C]
24	Fucose	Fuc	nmol/l	Karnatz, Josefine
25	Rhamnose	Rha	nmol/l	Karnatz, Josefine
26	Galactose	Gal	nmol/l	Karnatz, Josefine
27	Arabinose	Ara	nmol/l	Karnatz, Josefine
28	Glutamic acid	Glu	nmol/l	Karnatz, Josefine
29	Galactose	Gal	nmol/l	Karnatz, Josefine
30	Glutamic acid	Glu	nmol/l	Karnatz, Josefine
31	Mannose	Man	nmol/l	Karnatz, Josefine
32	Galactose	Gal	nmol/l	Karnatz, Josefine
33	Glutamic acid	Glu	nmol/l	Karnatz, Josefine
34	Carbohydrates, particulate combined	PCCHO	µmol/l	Karnatz, Josefine	PCCHO>20µm_sum [nM]
35	Carbohydrates, particulate combined	PCCHO	µmol/l	Karnatz, Josefine	PCCHO>20µm_sum [nM C]
36	Aphanizomenon sp.	Aphanizomenon sp.	#/l	Karnatz, Josefine	Aphanizomenon_abundance [Ind/L]
37	Aphanocapsa spp.	Aphanocapsa spp.	#/l	Karnatz, Josefine	Aphanocapsa_abundance [Ind/L]
38	Chaetoceros	Chaetoceros	#/l	Karnatz, Josefine	Chaetoceros_abundance [Ind/L]
39	Cylindrotheca	Cylindrotheca	#/l	Karnatz, Josefine	Cylindrotheca_abundance [Ind/L]
40	Nodularia spumigena	N. spumigena	#/l	Karnatz, Josefine	Nodularia_abundance [Ind/L]
41	Pseudo-nitzschia	Pseudo-nitzschia	#/l	Karnatz, Josefine	Pseudo-nitzschia_abundance [Ind/L]
42	Dinophysis	Dinophysis	#/l	Karnatz, Josefine	Dinophysis_abundance [Ind/L]
43	Diplopsalis-type	Diplopsalis-T	#/l	Karnatz, Josefine	Diplopsalis (group)_abundance [Ind/L]
44	Microphytoplankton	Microphytopl	#/l	Karnatz, Josefine	microphytoplankton_sum_abundance [Ind/L]
45	Aphanizomenon spp., biomass	Aphanizomenon spp. biom	µg/l	Karnatz, Josefine	Aphanizomenon_biomass [µg C/L]
46	Aphanocapsa sp., biomass, wet mass	Aphanocapsa sp. biom wm	µg/l	Karnatz, Josefine	Aphanocapsa_biomass [µg C/L]
47	Chaetoceros sp., biomass as carbon	Chaetoceros sp. C	µg/l	Karnatz, Josefine	Chaetoceros_biomass [µg C/L]
48	Cylindrotheca sp., biomass as carbon	Cylindrotheca sp. C	µg/l	Karnatz, Josefine	Cylindrotheca_biomass [µg C/L]
49	Nodularia spp., biomass	Nodularia spp. biom	µg/l	Karnatz, Josefine	Nodularia_biomass [µg C/L]
50	Pseudo-nitzschia sp., biomass as carbon	Pseudo-nitzschia sp. C	µg/l	Karnatz, Josefine	Pseudo-nitzschia_biomass [µg C/L]
51	Dinophysis sp., biomass as carbon	Dinophysis sp. C	µg/l	Karnatz, Josefine	Dinophysis_biomass [µg C/L]
52	Diplopsalis spp., biomass as carbon	Diplopsalis spp. C	µg/l	Karnatz, Josefine	Diplopsalis (group)_biomass [µg C/L]
53	Cyanobacteria, biomass	Cyanobacteria	µg/l	Karnatz, Josefine	cyanobacteria_sum_biomass [µg C/L]
54	Microphytoplankton, biomass as carbon	Microphytopl C	µg/l	Karnatz, Josefine	microphytoplankton_sum_biomass [µg C/L]

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1170 data points

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