Dataset: iioe_decapods
Deployment: Dm_65_1

Decapods collected during the International Indian OceanExpedition (IIOE) 1960-1965

Principal Investigator:

Vijayalakshmi R. Nair (National Institute of Oceanography, Kochi, India, NIO)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI)

Project:

International Indian Ocean Expedition (IIOE)

Current State:

Final no updates expected

Version Date:

2010-11-22

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/451947/data

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Description

'Zooplankton samples collected during International Indian Ocean Expedition (IIOE) 1960-65 are by far the largest and the most important collections from the Indian Ocean in the world today. Though several experts spent decades to study various groups of zooplankton, these valuable data have not been computerized to make permanent records. Hence a database for IIOE zooplankton is initiated as a cooperative project of CMarZ and a part of the IIOE data have been digitized.

During IIOE 1548 standard zooplankton samples were collected covering the entire Indian Ocean. The database is prepared based on published information on these zooplankton samples. Three sets of Tables are made (1) Basic data on zooplankton volume, total population and all the 54 taxa found in the collections. (2) Data emerged from subsorting of copepods, decapods and fish larvae (3) Species level data for chaetognaths for entire Indian Ocean and ostracods for northern Indian Ocean.' (from summary of CMarZ Cooperative Project final report)

An enormous amount of data emerged through IIOE collections (25 °N to 45°S latitude and 30 to 120°E longitude) had been digitized to make permanent records of the zooplankton of the Indian Ocean (Nair, 2005). The proposed baseline biodiversity assessment of CMarZ has a critical application for ocean research to provide a benchmark against which future comparisons can be made. The first step towards this endeavour would be to digitize the recorded species from different sectors of the world oceans along with their biogeography. This project aims to bring out inventories for the known species of major groups of zooplankton of the Indian Ocean. This information can be incorporated into CMarZ species page, an endeavour to enhance capacity in zooplankton taxonomic analyses.

Related objects: iioe_zoo and iioe_zoo_otherand iioe_copepods

Although technically retired, Vijaya Nair remains the contact for anyone seeking information about these data.

Contact information:
Vijayalakshmi R. Nair
HB/50, Vijaya
South Bridge Avenue, Panampilly Nagar
Kochi 682036, Kerala, India
(telephone/fax) 00-91-484-2316999
vijayalakshmi40@hotmail.com

Methods & Sampling

Dataset acquisition description

"It was recommended that each research vessel, every night between 2200 and 0200 hours local time, take one vertical haul from 200m to the surface, hauling in the net at a speed of 1 m/sec. The samples were then to be preserved in 10% formalin neutralized with hexamethylenetetramine. The displacement volume of the catch [was], if possible, measured at the earliest opportunity by an accepted method. The samples were then sent to the Sorting Centre for further processing. Many vessels took duplicate hauls, one for the Centre and one for the use of individual scientists in their respective countries." (Hansen, 1966).

Inventory is based on materials collected during IIOE and later collections made by NIO and other Institutions along the coastal and oceanic realms of the Indian Ocean.

References: Hansen, Vagn Kr., 1966. The Indian Ocean Biological Centre: The centre for sorting plankton samples of the International Indian Ocean Expedition. Deep-Sea Res., 13, pp.229-234.

Data Processing Description

Dataset Processing Description

References

Nair, V.R., 2001. Zooplankton. In : The Indian Ocean, a Perspective Volume 2. R. Sen Gupta and E. Desa (Eds.) 417-450. Oxford and IBH Publishing Co. Pvt., Ltd., New Delhi, Calcutta.

Nair, V.R., 2005. Database for zooplankton collected during International Indian Ocean Expedition (IIOE) 1960-65. Cooperating project Report. Census of Marine Zooplankton (CMarZ), Connecticut, USA.

More information about this dataset deployment

Instruments

Indian Ocean Standard Net

Supplied Description:

Instrument Type

Generic Name: Indian Ocean Standard Net

Acronym: I.O. Standard Net

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/NETT0075/

Generic Description:

The Indian Ocean Standard Net was designed specifically for the International Indian Ocean Exploration project. The net has a mouth area of one square meter and a total length of 5 meters. The net is made of nylon gauze with a mesh size of .333 mm (330um).

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
reference	master reference number of sample		no_bcodmo_term
taxon	common name of group		taxon
count	number of individuals counted	number per standard haul	count
decapods_total	sum of all columns	number per standard haul	no_bcodmo_term
zooplankton_vol	displacement volume of sample	milliliters	disp_vol
day_night_flag	D = Day; N = night		no_bcodmo_term
time_local	Self explanatory		time_local
date_local	Self explanatory		date_local
lon	longitude tow, East = positive	decimal degrees	lon
lat	latitude of tow, North = positive	decimal degrees	lat
station	Station number gives approximate location		station
cruise	cruise number of the particular vessel		cruiseid
year	year of collection		year
vessel	ship designation		no_bcodmo_term
depth_w	depth of water at this station	meters	depth_w

Database

Contribute Data

Dataset: iioe_decapodsDeployment: Dm_65_1

Dataset acquisition description

Dataset Processing Description

Dataset: iioe_decapods
Deployment: Dm_65_1