scholarly journals Fish fauna from the Ajó river in Campos del Tuyú National Park, province of Buenos Aires, Argentina

Check List ◽  
2009 ◽  
Vol 5 (4) ◽  
pp. 807 ◽  
Author(s):  
Agustín Solari ◽  
Mirta L. García ◽  
Andrés J. Jaureguizar
Keyword(s):  
National Park ◽  
Buenos Aires ◽  
Fish Fauna ◽  
Single Species ◽  
Marine Species ◽  
Nursery Area ◽  
Ramsar Site ◽  
Samborombón Bay ◽  
Micropogonias Furnieri ◽  
Samborombon Bay

We provide the first list of the ichthyofauna from the Ajó river, a water course situated at the southward border of the Samborombón bay (36°20'12"’ S, 56°54'17" W), a RAMSAR site in Argentina. These results were obtained bi-monthly along two years. Forty-five species belonging to 26 families and 11 orders were identified. This fish fauna is composed by freshwater, euryhaline and marine species. Richest groups were Perciformes and Characiformes, with 10 species each. A single species, Micropogonias furnieri (whitemouth croaker), represented morethan 70 % of the captured specimens, being juvenile individuals only. Remaining species were also represented by juvenile specimens, confirming the importance of this environment as nursery area, particularly for the whitemouth croaker.

scholarly journals Erosion at the Samborombón Bay and changes in wind direction, province of Buenos Aires, Argentina

2011 ◽  
Vol 13 ◽  
Author(s):  
Jorge Codigotto ◽  
Walter Dragani ◽  
Paula Martín ◽  
María Campos ◽  
Guadalupe Alonso ◽  
...  
Keyword(s):  
Wind Direction ◽  
Buenos Aires ◽  
Samborombón Bay ◽  
Samborombon Bay

scholarly journals Pisces, Anegada Bay protected area, Buenos Aires province, Argentina

Check List ◽  
2010 ◽  
Vol 6 (4) ◽  
pp. 579 ◽  
Author(s):  
Facundo M. Llompart ◽  
Juan M. Molina ◽  
Andrea L. Cazorla ◽  
Claudio R. Baigún ◽  
Darío C. Colautti
Keyword(s):  
Coastal Waters ◽  
Protected Area ◽  
Buenos Aires ◽  
Fish Fauna ◽  
Transitional Zone ◽  
Buenos Aires Province ◽  
Micropogonias Furnieri ◽  
Fauna Composition ◽  
Odontesthes Argentinensis ◽  
Mustelus Schmitti

We provide the first list of marine fish from Anegada Bay, a coastal protected area in Buenos Aires Province. Fish records were obtained from gillnets and recreational fishery captures. Thirty seven species belonging to 29 families and 18 orders were identified. The most numerous order was Perciformes with eight families and 10 species. Odontesthes argentinensis, Micropogonias furnieri, Cynoscion guatucupa and Mustelus schmitti were verified in all sampling sites and the last two were the most represented either in the experimental fishing and recreational captures. Presence of Lagocephalus laevigatus extended the so far known range distribution of this fish species, representing the southernmost records in Argentinean coastal waters. The fish fauna composition from Anegada Bay could be considered as from a transitional zone.

scholarly journals Hydro-morphologic setting of the Samborombón Bay (Argentina) at the end of the 21st century

2013 ◽  
Vol 13 (3) ◽  
pp. 523-534 ◽  
Author(s):  
L. Tosi ◽  
E. E. Kruse ◽  
F. Braga ◽  
E. S. Carol ◽  
S. C. Carretero ◽  
...  
Keyword(s):  
Sea Level ◽  
21St Century ◽  
Ad Hoc ◽  
Buenos Aires ◽  
Tide Gauge ◽  
Storm Surges ◽  
Potential Effect ◽  
Intergovernmental Panel ◽  
Samborombón Bay ◽  
Samborombon Bay

Abstract. We report on the hydrologic and morphologic setting of the Samborombón Bay, Argentina, which is expected at the end of the 21st century as a consequence of possible scenarios of relative sea level rise (RSLR). The geomorphological analysis of the Samborombón coastland points out only minor changes occurred over the last 40 yr. The modifications are mainly related to the construction of canals to enhance the floodplain drainage. A digital elevation model (DEM) obtained by the Shuttle Radar Topography Mission (SRTM) data archive, ad hoc calibrated/validated for the study area, highlights that about 3000 km2 of coastal plain present a morphological setting at high risk of sea flooding. The analysis of sea level and storm surge events recorded from 1905 to 2010 in Buenos Aires provides the RSLR rate and the return period of extreme floods. In addition, vertical land movements (VLM) measured by the permanent GPS stations of Buenos Aires and La Plata allow for the quantification of the eustatic component of the RSLR and estimating a plausible RSLR rate in the Samborombón Bay. Taking into account possible RSLR scenarios at the end of 2100 as resulting from the statistical analysis of (i) tide gauge and GPS time series and (ii) Intergovernmental Panel on Climate Change (IPCC) predictions, the potential effect of the increased sea level on the Samborombón coastland is simulated. The results show that the combined rise of sea levels, surficial waters and groundwater will lead to a new morpho-hydrologic setting of the coastal area, especially in the low-lying southern sector. Here, a coastline retreat up to 40 km is expected, with temporary submersion up to 4000 km2 during storm surges.

Multivariate Analysis of a Coastal Phreatic Aquifer Using Hydrochemical and Isotopic Indicators, Buenos Aires, Argentina

1991 ◽  
Vol 24 (11) ◽  
pp. 139-146 ◽  
Author(s):  
M. A. Hernández ◽  
N. González ◽  
M. Levin
Keyword(s):  
Multivariate Analysis ◽  
Principal Components ◽  
Buenos Aires ◽  
Environmental Isotopes ◽  
Phreatic Aquifer ◽  
Hydrogeological Parameters ◽  
Samborombón Bay ◽  
Samborombon Bay

Hydrochemical and isotopic indicators were used to improve diagnosis in an area where the outcrops of the hydrogeological units were previously defined. Environmental isotopes (18 Oxygen, Deuterium and Tritium) have been applied while interpretation with both tools (Chlorides-18 Oxygen) was done as well. The use of this kind of tracers allowed us to settle the hydrodynamic mechanisms, specially the recharge zones with nearly 10 TU values and how underground discharge occurs in lowlands, beach, Samborombon Bay and Samborombon River. Looking for a compatibility between hydrodynamics and hydrochemistry with those hydrogeological parameters, multivariate analysis was used. A matrix of 14 characters for 8 groups and 10 characters for 21 samples yielded correlation levels up to .98 and are shown through phenograms and principal components diagrams.

Study of marsh foraminifera from the coastal plain of Buenos Aires (Argentina) and its ecological implications

Zootaxa ◽  
2019 ◽  
Vol 4560 (3) ◽  
pp. 522 ◽  
Author(s):  
ANGÉLICA BALLESTEROS PRADA ◽  
EMILIANA BERNASCONI
Keyword(s):  
Coastal Plain ◽  
Considerable Increase ◽  
Buenos Aires ◽  
The State ◽  
Benthic Foraminifers ◽  
Ecological Characteristics ◽  
Ecological Implications ◽  
Samborombón Bay ◽  
Recent Sediments ◽  
Samborombon Bay

The objective of this work was determinate the diversity and abundance of benthic foraminifers from recent sediments of Channel 15, Samborombón Bay (35º57´–35º58´S and 57º25´–57º22´W). From this analysis, we identified 31 species grouped within 17 genera. The assemblages were composed mainly of hyaline and agglutinated forms characterized by Elphidium aff. poeyanum, Elphidium gunteri, Ammonia parkinsoniana, Arenoparella mexicana and Trochammina inflata, reflecting an environment of marsh or floodplain. The foraminifer’s tests were generally well preserved, with morphologies that indicate predominantly epifauna and epifauna-infauna. The present work shows that despite having a general fauna characteristic of these environments, there are small microenvironments that are characterized by the state of preservation, diversity and abundance of the found specimens. In that context, three associations were recognized; A, dominated by Astrononion sp.1 that was registered in the central part of the channel; association B, characterized mainly by E. aff. poeyanum that was founded in the internal and external areas of the channel and association C, characterized by a considerable increase of mentioned agglutinated species (close to 50%) registered in the center of the channel. This study represents one of the first contributions on the distribution of foraminifera and their ecological characteristics from recent sediments in Samborombón Bay. 

Food and Feeding Biology of the Common Tern during the Nonbreeding Season in Samborombon Bay, Buenos Aires, Argentina

Waterbirds ◽  
2001 ◽  
Vol 24 (1) ◽  
pp. 89 ◽  
Author(s):  
Laura Mauco ◽  
Marco Favero ◽  
Maria Susana Bó ◽  
Maria Susana Bo
Keyword(s):  
Buenos Aires ◽  
Common Tern ◽  
Nonbreeding Season ◽  
Feeding Biology ◽  
Samborombón Bay ◽  
Food And Feeding ◽  
The Common ◽  
Samborombon Bay

scholarly journals Fish fauna from Río Pilcomayo National Park and Ramsar Site and its surroundings, Formosa, Argentina

Check List ◽  
2014 ◽  
Vol 10 (6) ◽  
pp. 1387 ◽  
Author(s):  
Florencia Brancolini ◽  
Priscilla Minotti ◽  
Lucila Protogino ◽  
Hugo López ◽  
Claudio Baigún
Keyword(s):  
Fish Species ◽  
National Park ◽  
New Records ◽  
Fish Fauna ◽  
Ramsar Site

The first list of fish species from the Río Pilcomayo National Park and Ramsar Site (RPNP), located in the Wet Chaco plains of northern Argentina is presented here. Samplings were carried out bimonthly from December 2006 to January 2008 in sites representative of the different landscapes, in both dry and wet seasons. A total of 77 species were collected, belonging to 23 families and eight orders and covering 54% of the province ichthyofauna. New records to the Province of Formosa are Brachyhypopomus gauderio Giora & Malabarba, 2009; Cyanocharax sp. and Hypophthalmus edentatus Spix & Agassiz, 1829.

scholarly journals Documentation of flora of Rara lake and adjoining areas in mid-western region of Nepal

2013 ◽  
Vol 21 (1) ◽  
pp. 41-47
Author(s):  
BK Basnet
Keyword(s):  
National Park ◽  
Secondary Data ◽  
Flowering Plant ◽  
Western Region ◽  
Ramsar Site ◽  
Secondary Sources ◽  
Data Field ◽  
Adjoining Area ◽  
Faunal Diversity ◽  
Flowering Plant Species

Rara National Park is the smallest national park of the country. It is rich in floral and faunal diversity. Rara is one of the sacred lakes and is listed as a Ramsar site. The aim of the study was to compile the representative flora of Rara lake and to present status of available vegetation. The research used both primary and secondary sources of data. Field visit was conducted in June, 2010 during which more than 300 plant specimens were collected. The secondary data were collected from Rara and adjoining area like Gamgadi. These data were thoroughly analyzed to understand the composition of vegetation. The study revealed the existence of about 224 flowering plant species in the area, under 173 genera and 67 families. Compositae was found to be the largest family (21 species and 17 genera) followed by Rosaceae (19 species and 10 genera). DOI: http://dx.doi.org/10.3126/banko.v21i1.9063 Banko Janakari, Vol. 21, No. 1 2011; 41-47

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