Citation:

PANGAEA.972830

Name: Spatial distribution of dissolved free amino acid in three estuaries from the Gulf of Cadiz
Creator: Valentina Amaral
Published: 2024-10-01
License: https://creativecommons.org/licenses/by/4.0/
Keywords: DFAA; dissolved free amino acids; estuaries; Gulf of Cadiz

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Published: 2024-10-01 • DOI registered: 2024-10-30

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Abstract:

Our study focused on three estuaries in the Gulf of Cadiz: Guadalquivir, Guadiana, and Tinto-Odiel. These estuaries, influenced by semi-arid Mediterranean conditions and dam regulations, each have distinct characteristics. The Guadalquivir River has the highest discharge and significant anthropogenic impacts. The Guadiana River features a narrow channel and an extensive wetland. The Tinto-Odiel estuary, known for severe pollution due to mining, has a highly acidic environment and unique water chemistry. We collected surface water samples in July 2017 from coastal and tidal sites in each estuary, capturing data along a salinity gradient. Samples were analyzed for dissolved free amino acids (DFAA) using high-performance liquid chromatography (HPLC) with fluorescence detection. Amino acids were derivatized with o-phthalaldehyde (OPA) and analyzed for concentrations. Our study focused on three Iberian Atlantic estuaries -Guadalquivir, Guadiana, and Tinto-Odiel - that differ in hydrology, land use and DOM sources. We studied the longitudinal distribution of Dissolved Free Amino Acids (DFAA) and their response to tidal cycles across these estuaries. The study was performed during summer 2017.

Keyword(s):

DFAA; dissolved free amino acids; estuaries; Gulf of Cadiz

Related to:

Amaral, Valentina; Forja, Jesús M; Steger-Mähnert, Barbara; Herndl, Gerhard J; Romera-Castillo, Cristina (2024): Spatial distribution of dissolved free amino acids in three Iberian Atlantic estuaries. Marine Chemistry, 267, 104456, https://doi.org/10.1016/j.marchem.2024.104456

Funding:

Ministerio de Ciencia, Innovación y Universidades, grant/award no. RTI2018-100865-B-C21: Modeling of continental contributions to the Gulf of Cádiz: Dynamics of estuaries in a climate change scenario

Coverage:

Median Latitude: 37.100808 * Median Longitude: -6.897540 * South-bound Latitude: 36.505991 * West-bound Longitude: -7.523367 * North-bound Latitude: 37.553417 * East-bound Longitude: -6.098806

Event(s):

Guadalquivir_VIR1 * Latitude: 36.505991 * Longitude: -6.756444 * Location: Gulf of Cádiz * Method/Device: Water sample (WS)

Guadalquivir_VIR2 * Latitude: 36.764746 * Longitude: -6.446772 * Location: Gulf of Cádiz * Method/Device: Water sample (WS)

Guadalquivir_VIR7 * Latitude: 36.828701 * Longitude: -6.354768 * Location: Gulf of Cádiz * Method/Device: Water sample (WS)

Comment:

* Key Findings

DOM Characteristics: Each estuary showed distinct DOM profiles: humic-like materials in Guadalquivir and Guadiana, and protein-like materials in Tinto-Odiel.

Amino Acid Analysis: Variations in DFAA concentrations across estuaries reflect differences in environmental and anthropogenic influences.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Amaral, Valentina
2	Latitude of event	Latitude		Amaral, Valentina
3	Longitude of event	Longitude		Amaral, Valentina
4	Estuary	Estuary		Amaral, Valentina
5	Sample ID	Sample ID		Amaral, Valentina
6	Site	Site		Amaral, Valentina		Site for dissolved free amino acids (DFAA)
7	Transect	Transect		Amaral, Valentina
8	Estuarine Zone	Estuarine Z		Amaral, Valentina
9	Salinity	Sal		Amaral, Valentina
10	Aspartic acid	Asp	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
11	Glutamic acid	Glu	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
12	Asparagine	Asn	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
13	Serine	Ser	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
14	Glutamic acid	Glu	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
15	Histidine	His	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
16	Glycine	Gly	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
17	Threonine	Thr	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
18	Arginine	Arg	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
19	beta-Alanine	b-ala	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
20	Alanine	Ala	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
21	Taurine	Tau	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
22	gamma-Aminobutyric acid	g-ABA	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
23	Tyrosine	Tyr	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
24	Valine	Val	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
25	Methionine	Met	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
26	Tryptophan	Trp	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
27	Phenylalanine	Phe	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
28	Isoleucine	Ile	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
29	Leucine	Leu	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
30	Ornithine	Orn	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
31	Lysine	Lys	%	Amaral, Valentina	High Performance Liquid Chromatography (HPLC) ortho-phthaldialdehyde derivatization, Agilent 1260	[mol%]
32	Amino acid, total dissolved free	DFAA	nmol/l	Amaral, Valentina	High performance liquid chromatography (HPLC) using an Agilent 1200 Infinity II HPLC with fluorescence detector and Eclipse XDB C8 column
33	Carbon, organic, dissolved	DOC	µmol/l	Amaral, Valentina
34	Amino acid, carbon of total organic carbon	AA-C/C	%	Amaral, Valentina		Yields

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

863 data points

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