Dataset: Sargasso Sea Plankton Aggregation: Excess Densities

Name: Excess density of sinking aggregates of a Sargasso Sea plankton community from roller tank experiments with seawater collected during R/V Atlantic Explorer cruises AE1718 and AE1808 in 2017 and 2018
Published: 2019-08-14
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.774827.1

Spatial Extent: N:32.3027 E:-64.38 S:31.9795 W:-64.5752

Temporal Extent: 2017-09-17 - 2018-03-21

Project:

Aggregation of Marine Picoplankton (Marine Plankton Aggregation)

Principal Investigator:

Susanne Neuer (Arizona State University, ASU)

Student:

Bianca N. Cruz (Arizona State University, ASU)

Contact:

Susanne Neuer (Arizona State University, ASU)

BCO-DMO Data Manager:

Amber D. York (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-08-14

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Excess density of sinking aggregates of a Sargasso Sea plankton community from roller tank experiments with seawater collected during R/V Atlantic Explorer cruises AE1718 and AE1808 in 2017 and 2018

Abstract:

Excess density of sinking aggregates of a Sargasso Sea plankton community from roller tank experiments with seawater collected during R/V Atlantic Explorer cruises AE1718 and AE1808 in 2017 and 2018.

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2019-08-14	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.774827.1	2019-12-24

Description

Excess density of sinking aggregates of a Sargasso Sea plankton community from roller tank experiments with seawater collected during R/V Atlantic Explorer cruises AE1718 and AE1808 in 2017 and 2018.

These data were published in Cruz and Neuer, 2019.

Related Datasets:
* Sargasso Sea Plankton Aggregation: Aggregate Abundances https://www.bco-dmo.org/dataset/774813
* Sargasso Sea Plankton Aggregation: Sinking Velocities https://www.bco-dmo.org/dataset/774820
* Sargasso Sea Plankton Aggregation: Sizes https://www.bco-dmo.org/dataset/774841
* Sargasso Sea Plankton Aggregation: TEP https://www.bco-dmo.org/dataset/774834

Methods & Sampling

Sargasso Seawater was incubated in 1.25 L roller tanks for 5 days in the dark at 3.5 RPM (for further details on roller tanks, see Shanks and Edmondson, 1989). Aggregation was tested with and without the addition of kaolinite clay. All treatments had n = 2 tanks. Aggregates formed were quantified, sized, and their sinking velocities and excess densities determined. TEP concentrations were determined as in Passow and Alldredge (1995). The stock of Alcian-Blue dye used for TEP quantification had a calibration factor (f-factor) of 84.15.

Aggregation was tested with and without the addition of kaolinite clay (control, 0.5 mg per L of kaolinite clay, 5.0 mg per L of kaolinite clay)

Data Processing Description

BCO-DMO Data Manager Processing Notes: Growth Rates
* Excel sheet extracted to a csv file
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions
* blank values in this dataset are displayed as "nd" for "no data." nd is the default missing data identifier in the BCO-DMO system.

Data Files

File
sarg_dens.csv (Comma Separated Values (.csv), 396 bytes) MD5:0fcb79520e55b4ffae0a923112b0cca2 Primary data file for dataset ID 774827

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1658527

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
AE1718	BATS 10339 HS 61318	2017-09-11	R/V Atlantic Explorer	Rodney J. Johnson (Chief Scientist)	data info
AE1808	BATS 10345 HS 61333	2018-03-14	R/V Atlantic Explorer	Rodney J. Johnson (Chief Scientist)	data info

Instruments

None available yet

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	Cruise identifier	unitless	cruise_id
Depth	Depth from which seawater was collected for roller tank incubations	meters (m)	depth
Lat	Latitude	decimal degrees	lat
Lon	Longitude	decimal degrees	lon
Aggregate_Excess_Density_Control1	Aggregate excess density. Treatment = Control, replicate 1, no kaolinite clay.	grams per milliliter (g/mL)	no_bcodmo_term
Aggregate_Excess_Density_Control2	Aggregate excess density. Treatment = Control, replicate 2, no kaolinite clay.	grams per milliliter (g/mL)	no_bcodmo_term
Aggregate_Excess_Density_0_5mg_Lkaolinite1	Aggregate excess density. Treatment = concentration of 0.5 mg per L of kaolinite clay, replicate 1.	grams per milliliter (g/mL)	no_bcodmo_term
Aggregate_Excess_Density_0_5mg_Lkaolinite2	Aggregate excess density. Treatment = concentration of 0.5 mg per L of kaolinite clay, replicate 2.	grams per milliliter (g/mL)	no_bcodmo_term
Aggregate_Excess_Density_5_0mg_Lkaolinite1	Aggregate excess density. Treatment = concentration of 5.0 mg per L of kaolinite clay, replicate 1.	grams per milliliter (g/mL)	no_bcodmo_term
Aggregate_Excess_Density_5_0mg_Lkaolinite2	Aggregate excess density. Treatment = concentration of 5.0 mg per L of kaolinite clay, replicate 2.	grams per milliliter (g/mL)	no_bcodmo_term