Focusing Events and Changes in Ecologies of Policy Games: Evidence from the Paraná River Delta

2015 ◽  
Vol 32 (4) ◽  
pp. 443-464 ◽  
Author(s):  
Ramiro Berardo ◽  
Tomás Olivier ◽  
Anthony Lavers
Keyword(s):  
Paraná River ◽  
River Delta ◽  
Focusing Events ◽  
Parana River ◽  
Policy Games

Soil volume and carbon storage shifts in drained and afforested wetlands of the Paraná River Delta

2012 ◽  
Vol 112 (1-3) ◽  
pp. 359-372 ◽  
Author(s):  
Darío S. Ceballos ◽  
Jorge Frangi ◽  
Esteban G. Jobbágy
Keyword(s):  
Carbon Storage ◽  
Paraná River ◽  
River Delta ◽  
Parana River ◽  
Soil Volume

scholarly journals Post-Fire Effects in Wetland Environments: Landscape Assessment of Plant Coverage and Soil Recovery in the Paraná River Delta Marshes, Argentina

Fire Ecology ◽  
2012 ◽  
Vol 8 (2) ◽  
pp. 17-37 ◽  
Author(s):  
Mercedes Salvia ◽  
Darío Ceballos ◽  
Francisco Grings ◽  
Haydee Karszenbaum ◽  
Patricia Kandus
Keyword(s):  
Fire Effects ◽  
Paraná River ◽  
River Delta ◽  
Landscape Assessment ◽  
Parana River ◽  
Plant Coverage ◽  
Post Fire Effects ◽  
Soil Recovery

Resource use in the Parana River Delta (Argentina): moving away from an ecohydrological approach?

2008 ◽  
Vol 8 (2-4) ◽  
pp. 245-262 ◽  
Author(s):  
Claudio R.M. Baigún ◽  
Alba Puig ◽  
Priscilla G. Minotti ◽  
Patricia Kandus ◽  
Ruben Quintana ◽  
...  
Keyword(s):  
Resource Use ◽  
Paraná River ◽  
River Delta ◽  
Parana River

Dynamics of Exposure toRickettsia parkeriin Cattle in the Paraná River Delta, Argentina

2016 ◽  
Vol 53 (3) ◽  
pp. 660-665 ◽  
Author(s):  
L. D. Monje ◽  
F. B. Costa ◽  
V. C. Colombo ◽  
M. B. Labruna ◽  
L. R. Antoniazzi ◽  
...  
Keyword(s):  
Paraná River ◽  
River Delta ◽  
Parana River

scholarly journals Estimating flooded area and mean water level using active and passive microwaves: the example of Paraná River Delta floodplain

2011 ◽  
Vol 15 (8) ◽  
pp. 2679-2692 ◽  
Author(s):  
M. Salvia ◽  
F. Grings ◽  
P. Ferrazzoli ◽  
V. Barraza ◽  
V. Douna ◽  
...  
Keyword(s):  
Water Level ◽  
Paraná River ◽  
River Delta ◽  
Envisat Asar ◽  
Parana River ◽  
River Floodplains ◽  
Passive Data ◽  
Mean Water Level ◽  
Flooded Area ◽  
Microwave Signatures

Abstract. This paper describes a procedure to estimate both the fraction of flooded area and the mean water level in vegetated river floodplains by using a synergy of active and passive microwave signatures. In particular, C band Envisat ASAR in Wide Swath mode and AMSR-E at X, Ku and Ka band, are used. The method, which is an extension of previously developed algorithms based on passive data, exploits also model simulations of vegetation emissivity. The procedure is applied to a long flood event which occurred in the Paraná River Delta from December 2009 to April 2010. Obtained results are consistent with in situ measurements of river water level.

scholarly journals Orthohantavirus infection in two rodent species that inhabit wetlands in the central-east region of Argentina

2022 ◽  
Author(s):  
Malena Maroli ◽  
Carla M. Bellomo ◽  
Rocío M. Coelho ◽  
Valeria P. Martinez ◽  
Carlos I. Piña ◽  
...  
Keyword(s):  
Abundant Species ◽  
Individual Characteristics ◽  
Paraná River ◽  
River Delta ◽  
Adult Males ◽  
Parana River ◽  
East Region ◽  
Rodent Community ◽  
The Individual ◽  
High Degree

Hantavirus pulmonary syndrome (HPS) is an emerging infectious disease caused by orthohantaviruses associated to rodents of the Cricetidae family, Sigmodontinae subfamily, in the American continent. Previous research carried out in central-east region of Argentina, recorded potential orthohantavirus host rodents in diverse environments, but infected rodents were particularly present on Paraná wetlands islands. The aims of this research were (1) to determine the orthohantavirus host in the rodent community focused on islands of Paraná River Delta, an endemic zone of HPS, (2) to identify temporal and spatial factors associated with orthohantavirus prevalence variations, (3) to compare the individual characteristics of seropositive and seronegative rodents and, (4) to explore the association between orthohantavirus seroprevalence and rodent community characteristics in the Paraná River Delta, central-east region of Argentina. Capture of small rodents was done between August 2014 and May 2018 on seven islands located in central-east region of Argentina. In this HPS endemic zone, 14.9% of Oligoryzomys flavescens and 1.5% of Oxymycterus rufus of the sampled rodents had antibodies against orthohantavirus. The individuals that were more likely to become seropositive were the reproductively active adult males. Even though O. flavescens inhabit all islands, the seropositive individuals were only present in two of these, suggesting spatial heterogeneity in the viral distribution. We found that two months later of periods with low temperature, seroprevalence increased probably due to a higher proportion of adults in the population. Additionally, higher seroprevalence was associated with greater diversity of the rodent assemblage. This association could support the idea that a rescue effect or amplification of the prevalence of orthohantavirus would be taking place by means of secondary host as O. rufus, a novelty for this species and for the region. This finding may be significant if one takes into account that O. rufus was the second most abundant species in the area of islands studied and is one of the most abundant species on the islands and riparian sectors of the study zone. In conclusion, the relative risk of HPS could be high on wetlands of Paraná River Delta in the central-east region of Argentina where several favourable factors for the transmission of orthohantavirus are combined, such as the presence of several host species, two of them numerically dominant, high percentages of infection and a high degree of occupational exposure of the human population due to rural activities, the most frequently associated nationwide with HPS.

scholarly journals Species richness and functional groups of angiosperms from the Paraná River Delta region (Argentina)

Check List ◽  
2015 ◽  
Vol 11 (6) ◽  
pp. 1803 ◽  
Author(s):  
Nora Madanes ◽  
Rubén Darío Quintana ◽  
Patricia Kandus ◽  
Roberto Fabián Bó
Keyword(s):  
Native Species ◽  
Functional Group ◽  
Species Group ◽  
Paraná River ◽  
River Delta ◽  
Delta Region ◽  
Parana River ◽  
Emergent Plants ◽  
Species Groups ◽  
Photosynthetic Type

We provide a checklist of angiosperms collected in the Paraná River Delta Region during the 1990s and early 2000s. Plants were taxonomically identified and classified according to their origin (native/endemic and exotic) and functional group based on their distribution, biological type, morpho-ecology, photosynthetic type and life cycle. A total of 79 families and 375 species were recorded, of which 87.5% were native (46.93% of subtropical-temperate distribution) and 12.5% were exotic (62.72% of temperate distribution). The herbaceous broadleaf and graminoid vegetation predominated in native (76.65%) and exotic (82.35%) species groups. There were only equisetoid herbaceous plants in native species group. Rooted emergent plants and the C3 functional group predominated among native (88.69% and 80.62%, respectively) and exotic (100% in both cases) species groups. Most of the native plants (85.23%) were perennials, while annuals and perennials were equally represented among the exotic species.

In vitro isolation and infection intensity of Rickettsia parkeri in Amblyomma triste ticks from the Paraná River Delta region, Argentina

2014 ◽  
Vol 5 (6) ◽  
pp. 924-927 ◽  
Author(s):  
Lucas D. Monje ◽  
Santiago Nava ◽  
Leandro R. Antoniazzi ◽  
Valeria C. Colombo ◽  
Pablo M. Beldomenico
Keyword(s):  
Infection Intensity ◽  
Paraná River ◽  
River Delta ◽  
Delta Region ◽  
Rickettsia Parkeri ◽  
Parana River ◽  
Amblyomma Triste
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