Dataset: iioe_zoo
Deployment: Dm_62_2

Zooplankton 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/451799/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.

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:
Devi, C.B.L. 1986. Studies on the flat fish (Heterosomata) larvae of the Indian Ocean. Thesis submitted to University of Kerala for the Degree of Doctor of Phiolosophy. University of Kerala, Thiruvananthapuram. 480 pp.

George, J. and Nair, V.R. 1980. Planktonic ostracods of the northern Indian Ocean. Mahasagar - Bull. Natn. Inst. Oceanogr. 13 (1) : 29-44.

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.

Rosamma Stephen, 1999. Studies on copepods of the Indian Ocean with reference to the west coast of India, Ph.D. Thesis, University of Mumbai, Mumbai. 206pp.

S.U.Panampunnayil, 1999. Studies on the Mysidacea (Crustacea) of the Indian Ocean with reference to Indian waters. Ph.D. Thesis, Mumbai University, Mumbai. 223pp.

Sverdrup, H.U., Johnson, M.W. and Fleming, R.H. 1942. The Oceans, their physics, chemistry and general biology. Prentice-Hall, Inc., 1087pp.

The Biology of the Indian Ocean. 1973. B. Zeitzshcel and S.A. Gerlach (Eds.). Springer Verlag, Berlin, Heidelberg. New York. 549 pp.

Wyrtki, K., 1973. Physical Oceanography of the Indian Ocean. In: The Biology of the Indian Ocean. B. Zeitzschel, S.A. Gerlach (Eds) Springer Verlag, Berlin, Heidelberg, New York. 18-36.

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
vessel	abbreviated ship designation	dimensionless	platform
cruise	cruise number of the particular vessel	dimensionless	cruiseid
station	Station number gives approximate location	integer	station
lat	latitude of tow, North = positive	decimal degrees	lat
lon	longitude tow, East = positive	decimal degrees	lon
date_local	Date (local time)	dd/mm/YYYY	date_local
time_local	Time (local).	HHMM	time_local
day_night_flag	D = Day; N = night	D or N	no_bcodmo_term
zooplankton_vol	displacement volume of sample	ml (milliliters)	disp_vol
total_organisms	total number of individuals in tow	number per standard haul	count
reference	reference number of sample	integer	sample
taxon	common name of group	text	taxon
count	number of individuals counted	number per standard haul	count
year	year of collection	YYYY	year
depth_w	Depth of water at this station.	meters	depth_w

Database

Contribute Data

Dataset: iioe_zooDeployment: Dm_62_2

Dataset acquisition description

Dataset Processing Description

Dataset: iioe_zoo
Deployment: Dm_62_2