Spatio-temporal distribution of Atlantic searobins (Prionotus spp.) in relation to estuarine dynamics (Río de la Plata, Southwestern Atlantic Coastal System)

2007 ◽  
Vol 73 (1-2) ◽  
pp. 30-42 ◽  
Author(s):  
A.J. Jaureguizar ◽  
J.A. Waessle ◽  
R.A. Guerrero
Keyword(s):  
Temporal Distribution ◽  
Rio De La Plata ◽  
Southwestern Atlantic ◽  
Río De La Plata ◽  
Coastal System ◽  
Estuarine Dynamics ◽  
La Plata ◽  
Spatio Temporal ◽  
Atlantic Coastal

scholarly journals Material Particulado en Suspensión en el Río de la Plata: importancia del río Bermejo en su variabilidad espacio-temporal

2018 ◽  
pp. 1
Author(s):  
M. D. Camiolo ◽  
E. Cozzolino ◽  
A.J. Jaureguizar
Keyword(s):  
Late Summer ◽  
Early Summer ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Spatial Coverage ◽  
Monthly Pattern ◽  
Spatio Temporal ◽  
Moderate Resolution Imaging Spectroradiometer ◽  
Del Rio

<p>Spatio-temporal variability of Suspended Particulate Matter (SPM) in the Río de la Plata (RdlP) is analyzed from 2002-2014 of MODIS (Moderate Resolution Imaging Spectroradiometer) data and explained in terms of its main tributaries flows. The monthly mean showed maximum during late summer to mid-autumn, and minimum in mid-winter to early summer. The Bermejo river (BeR), is the tributary that more sediment in suspension brings. This situation was reflected in the significant relationship between the mean monthly concentrations of SPM with the average monthly flow of BeR. Seasonal variation in SPM concentration, showed maximum values in fall, followed by summer, and minimum values in winter and spring, reflecting the monthly pattern of discharge of the BeR with one and two months of delay. The pattern of spatial variation differentiated threes regions: the inner, central and outer. The annual variability evidenced a marked seasonality in the spatial coverage pattern of the waters with the highest SPM. The pattern of the anomalies, appeared to be related to the influence of river discharge, what it showed the temporal pattern of SPM anomalies did not related to the ENSO (El Niño – Sourthen Oscillation) cycle. These results allowed us to denote the importance of BeR (not ENSO dependent) to explain the pattern of observed SPM anomaly in the RdlP region.</p>

Temporal distribution of cyanobacteria in the coast of a shallow temperate estuary (Río de la Plata): some implications for its monitoring

2014 ◽  
Vol 186 (11) ◽  
pp. 7115-7125 ◽  
Author(s):  
María B. Sathicq ◽  
Nora Gómez ◽  
Darío Andrinolo ◽  
Daniela Sedán ◽  
Jorge L. Donadelli
Keyword(s):  
Temporal Distribution ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
La Plata ◽  
Temperate Estuary

Spatial variation in life-history traits of Oithona spp. in a shallow temperate estuarine system (Río de la Plata, south-west Atlantic) during spring

2015 ◽  
Vol 66 (9) ◽  
pp. 795 ◽  
Author(s):  
G. D. Cepeda ◽  
R. P. Di Mauro ◽  
M. C. Hozbor ◽  
D. Cucchi Colleoni ◽  
D. Hernández ◽  
...  
Keyword(s):  
Life History ◽  
Egg Production ◽  
Life History Traits ◽  
Reproductive Activity ◽  
Estuarine System ◽  
Rio De La Plata ◽  
Río De La Plata ◽  
Coastal System ◽  
La Plata ◽  
South West

Oithonid species are key components of estuarine zooplankton communities. The spatial distribution of Oithona nana and O. helgolandica (syn. O. similis) and their population dynamics were studied for the first time in a shallow temperate estuarine system in the south-west Atlantic Ocean. Here we estimated the influence of physical (salinity and temperature) and trophic (chlorophyll-a and bacterioplankton concentrations) factors on the life-history traits of O. nana and O. helgolandica. The abundance and biomass of O. nana were higher at the surface salinity front but were not correlated with higher egg production rates, which suggests the presence of some retention mechanism that favours population aggregation. In a spatial context, the high reproductive activity near the La Plata River runoff in comparison with the coastal system nearby, suggests that this system might favour the proliferation of O. nana populations. However, smaller females with fairly few and smaller eggs per sac occurred under estuarine influence, which implies that there is a potential ecological advantage. The extremely low abundance and reproductive activity of O. helgolandica at the Río de la Plata system indicates that this system might not constitute the best habitat for this cyclopoid.

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