Skip Navigation



JPR Advance Access published online on October 5, 2005
Journal of Plankton Research, doi:10.1093/plankt/fbi077
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
27/11/1103    most recent
fbi077v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by de Cao, M. S. B.
Right arrow Articles by Piccolo, C.
Right arrow Search for Related Content
PubMed
Right arrow Articles by de Cao, M. S. B.
Right arrow Articles by Piccolo, C.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org
Received June 6, 2005
Accepted September 28, 2005

Article

Temporal variability of diversity and biomass of tintinnids (Ciliophora) in a Southwestern Atlantic temperate estuary

M. S. Barría de Cao 1*, D. Beigt 1, and C. Piccolo 1

1 Instituto Argentino de Oceanografía, C. C. 804; Departamento de Biología, Bioquímica y Farmacia, San Juan 670. 8000-Bahía Blanca, Argentina

* To whom correspondence should be addressed.
M. S. Barría de Cao, E-mail: sbarria{at}criba.edu.ar


  Abstract

Seasonal variations in diversity and biomass of tintinnids (Ciliophora: Tintinnida) were investigated at two fixed stations in the inner part of the Bahía Blanca Estuary (38° 42' S; 61° 50' W) during an annual cycle. The variations were analysed in relation to surface temperature, salinity, transparency, solar radiation and chlorophyll a concentration. Biomass was calculated in terms of biovolume and carbon units. Diversity was estimated as the number of species and the Shannon Index (H'; ln based). Density of tintinnids ranged from 100 to 7,800 individuals L-1 H' ranged from 0 to 1.81. The biomass varied from 0.3 to 127.78 x 106 µm3 L-1 (0.02 to 39.4 µg C L-1). Density was significantly related to temperature, solar radiation and Secchi distance (p < 0.01); diversity was significantly related to temperature (p < 0.01) and solar radiation (p< 0.05). Biomass was significantly related only to temperature (p < 0.01) in one of the stations. According to Principal Components Analysis, tintinnids exhibited a segregation of three groups: winter, spring-summer and autumn for the most internal station and winter, spring and summer-autumn for the most external station. H' values were lower than those observed in other coastal systems found at about the same latitude in the Northern Hemisphere.

Communicating Editor: KJ Flynn
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.