Dataset: iioe_zoo_other
Deployment: Dm_62_3

Other Zooplankton groups 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://www.bco-dmo.org/dataset-deployment/452048/data

Expand/Collapse All

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)

Related data objects:

iioe_zoo V. Nair Zooplankton major groups collected during the IIOE, 1960-1965
iioe_chaetognaths V. Nair Chaetognath species recorded from the entire Indian Ocean
iioe_copepods V. Nair Copepods sub-sorted from zooplankton collected during IIOE, 1960-1965
iioe_decapods V. Nair Decapods sub-sorted from zooplankton collected during IIOE, 1960-1965
iioe_mysids V. Nair Mysidacea species recorded during the IIOE, 1962-1965
iioe_ostracods V. Nair Ostracod species from N. Indian Ocean, N. of 10o S.
iioe_pleuronects V. Nair Pleuronectiforms larvae from IIOE, 1960-1965

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

Total number of mysid species digitized are 101. These come under 3 families, 5 subfamilies and 36 genera. 7 species are cosmopolitan in distribution, 34 confined to Indo-Pacific and the remaining are restricted to Indian Ocean. Among the Indian Ocean species 18 are endemic to Arabian Sea and 4 are endemic to Andaman Sea.

Thirty one species of Pleuronectiformes belonging to the family Paralichthylidae, Bothidae, Soleidae and Cynoglossidae are found in the Indian Ocean. 23 species of bothid larvae coming under the genera Parabothus, Crossorhombus, Engyprosopon, Bothus, Asterorhombus, Psettina, Arnoglossus, Laeops and Chascanopsetta have been digitized. 16 species of bothid larvae are new records for the Indian Ocean. The larvae of Engyprosopon is the dominant genus and the species E. grandisquamis predominated. Arnoglossus tapeinosoma showed a wider distributional range being found both in the coastal and oceanic waters as well as in the southern and northern latitudes but conspicuously absent along the west coast of India. Bay of Bengal appears to be favourable for the growth and distribution of flat fish larvae especially bothids. Arnoglossus imperialis, an Atlantic species is reported for the first time from the Indian Ocean.

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		sample
taxon	common name of group		taxon
count	number of individuals counted	number per standard haul	count
vessel	ship designation		no_bcodmo_term
year	year of collection		year
cruise	cruise number of the particular vessel		cruiseid
station	Station number gives approximate location		station
lat	latitude of tow, North = positive	decimal degrees	lat
lon	longitude tow, East = positive	decimal degrees	lon
date_local	day/month/year		date_local
time_local	Self explanatory		time_local
day_night_flag	D = Day; N = night		no_bcodmo_term
zooplankton_vol	displacement volume of sample	milliliters	disp_vol
depth_w	Depth of water at this station.	meters	depth_w

Database

Contribute Data

Dataset: iioe_zoo_other
Deployment: Dm_62_3

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: iioe_zoo_otherDeployment: Dm_62_3

Dataset acquisition description

Dataset Processing Description

Dataset: iioe_zoo_other
Deployment: Dm_62_3