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Fish assemblage in a temperate estuary on the uruguayan coast: seasonal variation and environmental influence


 
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1. Title Title of document Fish assemblage in a temperate estuary on the uruguayan coast: seasonal variation and environmental influence
 
2. Creator Author's name, affiliation, country Alicia Acuña Plavan; Universidad de la República; Facultad de Ciencias; Sección Oceanología;
 
2. Creator Author's name, affiliation, country Cecilia Passadore; Universidad de la República; Facultad de Ciencias; Sección Oceanología;
 
2. Creator Author's name, affiliation, country Luis Gimenez; University of Wales; School of Ocean Sciences;
 
3. Subject Discipline(s)
 
3. Subject Keyword(s) Estuary;Fish assemblage;Pando Estuary;Río de la Plata;Annual variation;Environmental variables
 
4. Description Abstract The seasonal dynamics of the fish community in the Pando estuary on the Uruguayan coast were studied in relation to environmental sampled monthly between May 2002 and June 2003. Individuals collected were identified, and classified into stages (juveniles, adults) and functional groups. Relationships between community dynamics and environmental variables were evaluated using uni- and multivariate techniques. Twenty-one species, mostly freshwater stragglers, estuarine and marine migrants were collected. The most abundant species were Micropogonias furnieri, Mugil platanus, Paralichthys orbignyanus and Brevoortia aurea and were represented by juveniles. The community varied seasonally with rapid shifts in spring and autumn associated with changes in temperature and salinity. Significant correlations between abundance and temperature may be related to the timing of life cycle events. In this estuary, the salinity appears to play a key role in the functional structure and in the use of the habitat by juveniles. This is relevant for the definition of estuaries as nursery areas: this definition is context-dependent and is determined by the salinity conditions.
 
5. Publisher Organizing agency, location Universidade de São Paulo. Instituto Oceanográfico
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 2010-12-01
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://www.revistas.usp.br/bjoce/article/view/39627
 
10. Identifier Digital Object Identifier (DOI) http://dx.doi.org/10.1590/S1679-87592010000400005
 
11. Source Title; vol., no. (year) Brazilian Journal of Oceanography; Vol 58, No 4 (2010)
 
12. Language English=en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
15. Rights Copyright and permissions Copyright (c)