Dataset: salp_swarms
Deployment: OC379

Abundance, size, fecundity of Salpa aspera in the Slope Waters off northeastern USA

Principal Investigator:

Dr Laurence P. Madin (Woods Hole Oceanographic Institution, WHOI)

Co-Principal Investigator:

Dr Patricia Kremer (University of Connecticut, UConn)

BCO-DMO Data Manager:

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

Project:

Salp Swarm Dynamics (SalpSwarmDyn)

Current State:

Final no updates expected

Data URL:

https://www.bco-dmo.org/dataset-deployment/452669/data

Expand/Collapse All

Description

Abundance, size, fecundity of Salpa aspera in the Slope Waters off northeastern USA from R/V Oceanus OC379 and OC381 in the slope waters off NJ, DE, MD from June-Sept. 2002

Associated datasets: salp_chloro

Methods & Sampling

Dataset acquisition description

Bongo tows were made to a depth of about 50m (based on wire out and wire angle). As the tows were done at night, that includes essentially the entire population of these vertically migrating salps. Information on the depth distribution of the species is included in: Madin et al. (2006) (pdf)

Data Processing Description

Dataset Processing Description

The sizes for the aggregates are for individual animals in the chains. Chains were broken up during collection. Measurements of the aggregates do not include the "tips" but are for oral-aboral length only. The solitary forms are basically cylindrical so the length measurements are for the totals.

'premature': These embryos were released as an artifact associated with net collection.

OC-381: 'live biovolume of counted/measured aliquot': for the first few tows this represents the aliquot, ml of the total that was enumerated. Beginning with Tow 7, all aliquots were 250 ml . If the total was less than that, the entire sample was counted.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-0002540	NSF Division of Ocean Sciences

Instruments

CTD - profiler

Supplied Name: Conductivity, Temperature, Depth

Supplied Description:

Instrument Type

Generic Name: CTD - profiler

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.

This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.

Fluorometer

Supplied Description:

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	cruise designation		cruise_id
year	year, reported as YYYY, e.g. 2005		year
haul_id	haul identification number		haul_id
date_local	local month, day and year, usually as a text string, e.g. feb10_1995.		date_local
time_local	time of day, local time, using 2400 clock format		time_local
month_local	month of year, local time		month_local
yrday_local	local day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours		yrday_local
lat	latitude, in decimal degrees, North is positive, negative denotes South	decimal degrees	lat
lon	longitude, in decimal degrees, East is positive, negative denotes West	decimal degrees	lon
day_local	day, local time		day_local
dvol_liters	displacement volume (biovolume) of plankton net samples	liters	disp_vol
volfilt	volume of water filtered during plankton tow	meters^3	vol_filt
biovol_per_aliq	the aliquot, ml of the total that was enumerated. Beginning with Tow 7 (OC-379), all aliquots were 250 ml . If the total was less than that, the entire sample was counted.	milliliters	biovolume
form	the morphological stage of the salp, either aggregate (agg) or solitary (sol)		no_bcodmo_term
fertilized_flag	for colonial stage only: Y=embryos present; N=none seen		no_bcodmo_term
fraction_chain_inside	the fraction of the embryo that is still inside the solitary adult after capture in the net.		no_bcodmo_term
comments	free text comments		comment
length	The sizes for the aggregates are for individual animals in the chains. Chains were broken up during collection. Measurements of the aggregates do not include the "tips" but are for oral-aboral length only. The solitary forms are basically cylindrical so the length measurements are for the totals.	millimeters (?)	length

Database

Contribute Data

Dataset: salp_swarms
Deployment: OC379

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: salp_swarmsDeployment: OC379

Dataset acquisition description

Dataset Processing Description

Dataset: salp_swarms
Deployment: OC379