Dataset: Hydrothermal vent porewater nutrients - MPI

Name: Porewater nutrient, sulfide, and sulfate concentrations in Alvin pushcore samples collected from Guaymas Basin hydrothermal vents during R/V Atlantis cruise AT42-05 in November 2018 and analyzed at the Max Planck Institute for Marine Microbiology
Published: 2020-08-21
Keywords: oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.816549.1

Spatial Extent: N:27.0118 E:-111.4039 S:27.0069 W:-111.4071

Temporal Extent: 2018-11-17 - 2018-11-25

Project:

Collaborative Research: Hydrothermal Fungi in the Guaymas Basin Hydrocarbon Ecosystem (HOTFUN)

Principal Investigator:

Andreas Teske (University of North Carolina at Chapel Hill, UNC-Chapel Hill)

Co-Principal Investigator:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

Analyst:

Gunter Wegener (Max Planck Institute for Marine Microbiology, MPI)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2020-08-21

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Porewater nutrient, sulfide, and sulfate concentrations in Alvin pushcore samples collected from Guaymas Basin hydrothermal vents during R/V Atlantis cruise AT42-05 in November 2018 and analyzed at the Max Planck Institute for Marine Microbiology

Abstract:

Porewater nutrient, sulfide, and sulfate (NH4+, NO2-, NO3-, PO43-, SiO42-, Cl-, S2-, SO24-) concentrations in Alvin pushcore samples collected from Guaymas Basin hydrothermal vents during R/V Atlantis cruise AT42-05 in November 2018. This dataset was obtained at the Max-Planck-Institute for Marine Microbiology in Bremen, Germany.

Expand/Collapse All

Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2020-08-21	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.816549.1	2020-08-24

Description

Porewater nutrient, sulfide, and sulfate (NH4+, NO2-, NO3-, PO43-, SiO42-, Cl-, S2-, SO24-) concentrations in Alvin pushcore samples from Guaymas Basin hydrothermal vents, R/V Atlantis cruise AT42-05, Nov. 2018. These samples were analyzed at the Max Planck Institute for Marine Microbiology in Bremen, Germany.

Porewater samples from this cruise were also reported by Woods Hole Oceanographic Institution (NO3+NO2, NH4, PO4) and the University of North Carolina at Chapel Hill (sulfate and sulfide). See related datasets:
https://www.bco-dmo.org/dataset/773129 (WHOI)
https://www.bco-dmo.org/dataset/816852 (UNC)

Methods & Sampling

This porewater dataset was obtained at the Max-Planck-Institute for Marine Microbiology in Bremen, Germany. The sampling site names in the data are based on Teske et al. 2016.

For analyses at the Max-Planck Institute for Marine Microbiology (Gunter Wegener), intact sediment cores were sampled using the Rhizons (Rhizosphere Research Products, Wageningen, NL) as described previously (Seeberg-Elversfeldt et al., 2005). The overlying water was removed from the cores and holes were drilled into designated sediment sampling depths. Pretreated Rhizons were injected and suction was applied with syringes for approx. 30 min. The rhizome depths are given in the dataset (depth_bsf).

For sulfide analysis, 1 ml porewater subsamples were fixed with 0.1 ml of 0.1 M zinc acetate solution to preserve the sulfide as zinc sulfide until analysis by the methylene blue method (Cline 1969). The same fixed porewater sample was used for measuring sulfate concentrations using ion chromatography (Metrohm 930 Compact IC flex oven, Metrosep A PCC HC/4.0 preconcentration column, and Metrosep A Supp 5 Guard/4.0 chromatography column).

The concentrations of ammonia, nitrite, nitrate, phosphate, and silicate were determined from porewater using a continuous flow nutrient analyzer (QuAAtro39; Seal Analytical) as published previously (Grasshoff et al., 2009).

Problem report: Transport problems have caused sample losses among the porewater samples, which are evident in occasional gaps in porewater profiles.

Data Processing Description

BCO-DMO Processing:
- renamed fields;
- removed empty columns;
- changed date format from DD.MM.YYYY to YYYY-MM-DD;
- added Site, Sample_type, Lat, Lon, and Water_depth fields from information originally provided in Word;
- removed commas in Site and Sample_type columns;
- joined data columns from separate spreadsheets into one data by matching on key Dive+Core+depth_bsf.

Data Files

File
MPI_porewater_nutrients.csv (Comma Separated Values (.csv), 12.50 KB) MD5:2999c7774478808cde3817406740ff2d Primary data file for dataset ID 816549

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1829680

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AT42-05		2018-11-15	R/V Atlantis	Andreas Teske (Chief Scientist)	data info
AT42-05_Alvin_Dives		2018-11-17	Alvin	Andreas Teske (Chief Scientist)	data info

Instruments

Alvin tube core

Supplied Name: Alivn pushcore

Supplied Description:

Instrument Type

Generic Name: Alvin tube core

Acronym: Tube Core

Generic Description:

A plastic tube, about 40 cm (16 inches) long, is pushed into the sediment by Alvin's manipulator arm to collect a sediment core.

Ion Chromatograph

Supplied Name: ion chromatography

Supplied Description:

Sulfate concentrations were measured using ion chromatography (Metrohm 930 Compact IC flex oven, Metrosep A PCC HC/4.0 preconcentration column, and Metrosep A Supp 5 Guard/4.0 chromatography column).

Instrument Type

Generic Name: Ion Chromatograph

Generic Description:

Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic.html)

Nutrient Autoanalyzer

Supplied Name: QuAAtro39; Seal Analytical continuous flow nutrient analyzer

Supplied Description:

Instrument Type

Generic Name: Nutrient Autoanalyzer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/

Generic Description:

Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples.

Sediment Porewater Sampler

Supplied Name: Rhizons

Supplied Description:

Instrument Type

Generic Name: Sediment Porewater Sampler

Generic Description:

A device that collects samples of pore water from various horizons below the seabed.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Site	Site name	unitless	site
Sample_type	Description of sample	unitless	sample_type
Lat	Site latitude; positive values = North	decimal degrees North	lat
Lon	Site longitude; positive values = East	decimal degrees East	lon
Water_depth	Depth of the water	meters	depth_w
date	Date of sampling; format: YYYY-MM-DD	unitless	date
gear	Sampling gear	unitless	instrument
Dive	Dive ID number	unitless	dive_id
Core	Core ID number	unitless	core_id
depth_bsf	Depth below sea floor	centimeters (cm)	depth_bsf
Ammonia	Ammonia	micromoles per liter (umol/L)	NH3_pw
Nitrite	Nitrite	micromoles per liter (umol/L)	NO2
Nitrite_Nitrate	Nitrite+Nitrate	micromoles per liter (umol/L)	NO3_NO2_pw
Phosphate	Phosphate	micromoles per liter (umol/L)	PO4
Silicate	Silicate	micromoles per liter (umol/L)	SiO4
Nitrate	Nitrate	micromoles per liter (umol/L)	NO3
Chloride	Chloride	millimolar (mM)	chloride
Sulfate	Sulfate	millimolar (mM)	SO4
Sulfide	Sulfide	millimolar (mM)	sulfide

Status message

Database

Contribute Data

Dataset: Hydrothermal vent porewater nutrients - MPI