Free-living marine Nematodes from Sa…

Occurrence dataset published by Centro Nacional Patagonico - CONICET

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Summary

Full Title

Free-living marine Nematodes from San Julián bay (Santa Cruz, Argentine).

Description

Tha aim of this database is collecting all the registered data of free-living marine Nematodes species from San Julian bay during January, 2009.

Temporal coverages

Date range: Jan 11, 2009 - Jan 13, 2009

Language of Data

 

Administrative contact
Catalina Pastor
Researcher
CONICET- CENPAT Boulevard Brown 2915 U9120ACD Puerto Madryn Chubut Argentina 0280 4451024
Metadata author
Catalina Pastor
Researcher
CONICET-CENPAT Boulevard Brown 2915 U9120ACD Puerto Madryn Chubut Argentina 0280 4451024
Originator
Catalina Pastor
Researcher
CONICET- CENPAT Boulevard Brown 2915 U9120ACD Puerto Madryn Chubut Argentina 0280 4451024

Published by

Centro Nacional Patagonico - CONICET

Publication Date

Aug 23, 2013

Registration Date

Oct 17, 2013

Served by

IPT CENPAT-CONICET

Links

External Data

Metadata Documents

Taxonomic Coverage

This data base covers the two clases of free-living marine nematodes: Enoplea and Chromadorea. All nematodes has been identified to genera or species.

KINGDOM
Animalia
PHYLUM
Nematoda (Nematodes)
CLASS
Enoplea, Chromadorea

10,030 Georeferenced data

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Description

This sampling of San Julián Bay, 2009, was in nine different sampling sites.

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Geographic Coverage

This sampling of San Julián Bay, 2009, was in nine different sampling sites.

Impact assesment in urban sand-clay coastal areas of Santa Cruz province, using methods of rapid assesment in changes of nematodes community structure.

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Study area description

This project proposed to study for the first time the meiobenthos (Nematoda) with the aim to find the degree of disturbance in littoral sand-clay coastal areas of the Ría San Julián. The Ría San Julián has a complex variety of wild environments together with a urban human population that produces seawage and garbage, presently poorly treated. Coastal areas near San Julián city will be contrasted with natural areas of similar oceanographic characteristics.

Design description

This project proposed: a) To contribute to the biodiversity knowledge of meiobenthos (nematodes)on Santa Cruz province coasts. b) characterize using communitary structures of meiobenthos the degree of disturbance that the San Julian city coast presently has. c) To form two doctorate grant students in meiobenthos (Nematoda) related to impact assessment studies; e) To transfer and to teach about meiobenthos (Nematoda), which is not yet very well known in Argentina.

Funding

PICT AGENCIA-FONCYT 2/33345 (2005)

Project Personnel

Principal investigator
Catalina Pastor

Associated parties

Content provider
Virginia Lo Russo
Grant
CONICET-CENPAT Boulevard Brown 2915 U9120ACD Puerto Madryn Chubut Argentina 0280 4451024
Author
Catalina Pastor
Researcher
CONICET- CENPAT Boulevard Brown 2915 U9120ACD Puerto Madryn Chubut Argentina 0280 4451024

Methodology

Study extent

The study took place in three localities (mouth, city and El Rincón) and in three tidal levels (high, medium and low)on each locality, so nine sampling sites in total.

Sampling description

Marine nematodes were extracted from samples using the elutriation/decantation LUDOX TM (colloidal silica polymer) method at a specific gravity of 1.15, quantifying only organisms that pass through a 500 um and are then retained by a 63 um mesh. Samples were evaporated to anhydrous glycerol and permanent slides made (Somerfield & Warwick 1996). The classification followed for the systematic position of the meiofauna taxa was Hulings and Gray (1988).

Quality control

All data were gathered from the primary information source (Nematode collection CENPAT, CNP-NEM). The identification are supported by the technical report and by the scientific papers associated with the project.

Method Steps

  1. Taxonomic identifications of Nematoda were obtained using light microscope (Zeiss Photomicroscope or Olympus BX51 equipped with differential Interference Contrast) and/or photographed by a digital camera (NIKON D80 with adapted software). The specimens are deposited in Centro Nacional Patagónico (CENPAT-CONICET), Chubut, Argentina.

Specimen Preservation method

Glycerin