Dataset: iioe_copepods

Name: Copepods subsorted from the zooplankton collected during the International Indian OceanExpedition (IIOE) from14 cruises on R/V Anton Bruun, R/V Argo, RRS Discovery, and R/V Natal in the Indian Ocean from 1962-1964 (IIOE project)
Published: 2010-11-22
Keywords: oceans

Cite This Dataset

Spatial Extent: N:24 E:97.67 S:-40.1 W:20.73

Project:

International Indian Ocean Expedition (IIOE)

Program:

Census of Marine Life (CoML)

Principal Investigator:

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

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI)

Version:

final

Version Date:

2010-11-22

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Copepods subsorted from the zooplankton collected during the International Indian OceanExpedition (IIOE) from14 cruises on R/V Anton Bruun, R/V Argo, RRS Discovery, and R/V Natal in the Indian Ocean from 1962-1964 (IIOE project)

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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)

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_other

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

"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

Sixty species of calanoid copepods from 31 genera belonging to 8 families are described. Most of the species are epi and mesopelagic and showed wide distribution in the Atlantic, Pacific and Indian Oceans. Bathypelagic species recorded are Megacalanus princeps, Bathycalanus richardi, Gaussia princeps, G. scotti and G. sewelli which are occasionally caught in 1000-500m hauls. G. sewelli is known only from the Indian Ocean. Paracalanus indicus and Pleuromamma indica are the most abundant species in the mixed layer depth of the Indian Exclusive Economic Zone. Undinula vulgaris and Cosmocalanus darwinii are mostly confined to the upper 50m. Lucicutia wolfendeni shows affinity to the Oxygen Minimum Zone (OMZ). The herbivorous copepods namely Calanidae and Paracalanidae dominate the highly productive waters of Indian Ocean during summer monsoon and form food for pelagic shoaling fishes.

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.

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.

Data Files

File
iioe_copes_new.csv (Comma Separated Values (.csv), 624.37 KB) MD5:a087a592c85ee0a7db2c149cb4200f7d Primary data file for dataset ID 2483

More Information about this dataset

Funding Sources

None available yet

Deployments

Deployment	Start Date	Platform
AB_63_1	1963-03-12	R/V Anton Bruun	data info
AB_63_2	1963-05-22	R/V Anton Bruun	data info
AB_63_3	1963-08-08	R/V Anton Bruun	data info
AB_63_4A	1963-09-25	R/V Anton Bruun	data info
AB_63_A	1963-02-24	R/V Anton Bruun	data info
AB_64_5	1964-01-26	R/V Anton Bruun	data info
AB_64_6	1964-05-15	R/V Anton Bruun	data info
AB_64_7	1964-07-29	R/V Anton Bruun	data info
AB_64_8	1964-09-25	R/V Anton Bruun	data info
Ar_62_Lu	1962-07-01	R/V Argo	data info
Di_63_1	1963-06-16	RRS Discovery	data info
Di_64_3	1964-03-08	RRS Discovery	data info
Na_62_5	1962-10-05	R/V Natal	data info
Na_63_6	1963-01-11	R/V Natal	data info

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

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

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	no_bcodmo_term
total_organisms	total number of individuals in tow	number per standard haul	no_bcodmo_term
zooplankton_vol	displacement volume of sample	ml	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
vessel	ship designation		no_bcodmo_term
depth_w	depth of water at this station	meters	depth_w
year	year data was collected		year

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Dataset: iioe_copepods