Dataset: Larval abundance 2014-2016

Name: Larval abundance data collected by plankton pump or diver-towed plankton nets at Bird Rock, La Jolla, CA, 2014-2016
Published: 2018-08-20
Keywords: biota, oceans

Cite This Dataset

DOI:10.26008/1912/bco-dmo.743779.1

Spatial Extent: N:32.81113 E:-117.2691 S:32.807 W:-117.2807

Temporal Extent: 2014-05-09 - 2016-10-04

Project:

Nearshore larval transport: physical and biological processes (Nearshore larval transport)

RAPID: Nearshore settlement and hydrodynamics in Southern California during El Nino, and the transition to normal ocean conditions: boom and bust? (RAPID_Settlement_Hydrodynamics)

Principal Investigator:

Nathalie Reyns (University of San Diego, USD)

Co-Principal Investigator:

Steven J. Lentz (Woods Hole Oceanographic Institution, WHOI)

Jesus Pineda (Woods Hole Oceanographic Institution, WHOI)

Contact:

Nathalie Reyns (University of San Diego, USD)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2018-08-20

Restricted:

Release Date:

2020-08-10

Validated:

Yes

Current State:

Final no updates expected

Larval abundance data collected by plankton pump or diver-towed plankton nets at Bird Rock, La Jolla, CA, 2014-2016

Abstract:

Abundances of barnacle and bryozoan larvae collected in the water column on multiple cruises at stations along the Southern California nearshore at depths 0-~14 m water depth and from offshore Calumet Park, La Jolla, Southern California, from 2014-05-09 to 2016-10-04.

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Archival Copy

Version Date	Archive	Persistent Identifier (PID)	Date PID Issued
2018-08-20	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.26008/1912/bco-dmo.743779.1	2020-08-10

Description

Methods & Sampling

Larvae were collected by either plankton pump (normal, event, thermo, and swell cruise types, or by divers towing a plankton net (diver). All samples have been standardized as larval concentration (# larvae/m^3). Larval plankton pump sampling and processing are as described in Hagerty, et al (2018).

Depths/stations sampled depended on cruise type and included:
- Normal cruise: Stations at 4m, 6m, 8m, 10m, 12m, and 14m depths, where the pump filtered water in 2m depth intervals from the surface to the bottom.

- Event cruise: Stations sampled between 8m and 3m depths depending on the location of warm temperature fronts. The pump filtered water at 0.15m, 0.75m, 2m, and 0.20 meters above bottom).

- Swell cruise: Sampling during high wave conditions, at 8m depth, with pump filtering water in 2m depth intervals from the surface to the bottom.

- Thermo cruise: Sampling at a fixed station at 5m depth, with pump filtering water in 1m depth intervals from the surface to the bottom.

Larval plankton net sampling employed paired 120 µm mesh, 20.32cm diameter plankton nets equipped with mechanical flow meters (General Oceanics 2030R).

- Diver cruise: Divers pushed nets through the water at the surface, mid-depth, and near-bottom at stations located in 2m, 4m, and 8m depths.

Cruise area is Southern California nearshore, depths 0-~14 m water depth. The campling location was offshore Calumet Park, La Jolla, Southern California, USA within the box delimited by the following points:
NE 32° 48.677'N, 117° 16.195'W
SE 32° 48.568'N, 117° 16.145'W
SW 32° 48.421'N, 117° 16.738'W
NW 32° 48.619'N, 117° 16.842'W

Overall larval abundances for 2014-2016 normal cruises published in: Pineda, J., et al. (2018). See also 2014-2015 data in: Hagerty, M. L. (2017).

Data Processing Description

All processed data are average larval concentrations by date and cruise type.

BCO-DMO data manager processing notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- reduced number of digits to right of decimal from 14 to 3 places for all abundances
- re-formatted date from m/d/yyyy to yyyy-mm-dd

Data Files

File
larval_abund.csv (Comma Separated Values (.csv), 4.85 KB) MD5:859cd3d1dfbf475f2c0a59b71a21ce5e Primary data file for dataset ID 743779

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1630459
NSF Division of Ocean Sciences	OCE-1630474
NSF Division of Ocean Sciences	OCE-1357290
NSF Division of Ocean Sciences	OCE-1357327

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Pineda_small_boat		2014-04-18	R/V Gaia	Jesus Pineda (Chief Scientist) Steven J. Lentz (Co-Chief Scientist) Nathalie Reyns (Co-Chief Scientist) Jesus Pineda (Contact)	data info
Reyns_RAPID_2016		2016-04-22	R/V Gaia		data info

Instruments

Plankton Net

Supplied Name: Larval plankton nets

Supplied Description:

120 µm mesh, 20.32cm diameter equipped with mechanical flow meters (General Oceanics 2030R)

Instrument Type

Generic Name: Plankton Net

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/22/

Generic Description:

A Plankton Net is a generic term for a sampling net that is used to collect plankton. It is used only when detailed instrument documentation is not available.

Pump

Supplied Name: Ebara 50DWXU6.4S Dominator submersible semivortex pump

Supplied Description:

Used to collect plankton samples for abundance measurements. Seawater was filtered through a 118 µm mesh net to capture barnacle larval stages.

Instrument Type

Generic Name: Pump

Generic Description:

A pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified into three major groups according to the method they use to move the fluid: direct lift, displacement, and gravity pumps

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_type	Five type of cruises in this study: Normal cruise: Stations at 4m, 6m, 8m, 10m, 12m, and 14m depths where pump filtered water in 2m depth intervals from the surface to the bottom. Event cruise: Stations sampled between 8m and 3m depths depending on location of warm temperature fronts. Pump filtered water at 0.15m, 0.75m, 2m, and 0.20 meters above bottom). Swell cruise: Sampling during high wave conditions, at 8m depth, with pump filtering water in 2m depth intervals from the surface to the bottom. Thermo cruise: Sampling at fixed station at 5m depth, with pump filtering water in 1m depth intervals from the surface to the bottom. Diver cruise: Divers pushed nets through the water at the surface, mid-depth, and near-bottom at stations located in 2m, 4m, and 8m depths.	unitless	cruise_type
Avg_nauplii_m3	average abundance of nauplii	number/meter^3 (#/m^3)	abundance
Avg_Chthamalus_fissus_cyprids_m3	average abundance of Chthamalus_fissus_cyprids	number/meter^3 (#/m^3)	abundance
Avg_Balanus_glandula_cyprids_m3	average abundance of Balanus_glandula_cyprids	number/meter^3 (#/m^3)	abundance
Avg_Balanus_trigonus_cyprids_m3	average abundance of Balanus_trigonus_cyprids	number/meter^3 (#/m^3)	abundance
Avg_Megabalanus_rosa_cyprids_m3	average abundance of Megabalanus_rosa_cyprids	number/meter^3 (#/m^3)	abundance
Avg_Pollicipes_polymerus_cyprids_m3	average abundance of Pollicipes_polymerus_cyprids	number/meter^3 (#/m^3)	abundance
Avg_Tetraclita_rubescens_cyprids_m3	average abundance of Tetraclita_rubescens_cyprids	number/meter^3 (#/m^3)	abundance
Avg_zoeae_m3	average abundance of zoeae	number/meter^3 (#/m^3)	abundance
Avg_cyphonautes_m3	average abundance of cyphonautes	number/meter^3 (#/m^3)	abundance
Date	Sample collection date.	unitless	date

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Database

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Dataset: Larval abundance 2014-2016