Critical analysis of the biogeography of Paraguay

Abstract

Resumen: En el Paraguay, las ecorregiones están establecidas en la Resolución SEAM Nº 614/2013, la cual a su vez está basado en trabajos realizados en 1990 para la región Oriental y un mapa de ecorregiones de la región Occidental resultado de talleres de expertos. Hay pocos antecedentes de estudios sobre la biogeografía del Paraguay, pero dos de ellos influenciaron en la identificación de áreas biogeográficas del Paraguay: Así las ecorregiones de la Región Oriental de Acevedo et al. (1990) y las regiones ornitogeográficas de Hayes (1995) muestran que estuvieron inspiradas en la definición de las regiones forestales de Tortorelli (1967). Así mismo, la propuesta de Dinerstein et al. (1995) influenció en las propuestas desarrolladas por Clay et al. (2005), Cacciali (2010) y Avila (2018).

Abiotic Drivers of Bat Community Diversity in a Savanna Mosaic across the Tropical/Subtropical Transition of South America

“…Although overall climatic variation among sites was found to be non-significant in the ANOVA, cluster analysis of the sites based on the same climatic parameters revealed the Cerrado and a Humid Chaco site to be the most similar pair, whereas the two Dry Chaco sites, although most similar to each other, are distinctly different environmentally. Nevertheless, the clustering analysis emphasized the distinct nature of the Dry Chaco, supporting ecoregional arrangements which include recognition of Dry and Humid Chaco as distinct ecoregions, as well as those which view the Humid Chaco as extending eastward of the Paraguay River (e.g., Clay et al ., 2008; Cacciali et al ., 2016; Avila Torres et al ., 2018). The question then, is whether the bat community diversity indices are reflective of the ecoregional characteristics, or are driven more directly by abiotic environmental parameters.…”

“…Viewed chronologically, these and other such publications reflect a growing awareness of the complex patterns of Paraguayan flora, fauna and climatic parameters, as well as the interdigitation of ecoregions. An example of this is the more recently developed understanding that the Paraguay River, which although it neatly divides the country between east and west, is not in fact an ecoregional boundary (Dinerstein et al ., 1995; Clay et al ., 2008; Cacciali et al ., 2016; Avila Torres et al ., 2018).…”

First Record of Sericomyrmex mayri for Paraguay and Increasing the Range of Distribution of 17 Ant Species in the Central Department

“…Field work was carried out between March 2019 and April 2019 in the locality of Cocue Guazú, Areguá, in the Central Department of Paraguay, located at 25°20′48.10″ South and 57°22′15.84″ East (Figure 1) at an elevation of 172 m.a.s.l. and belonging to the Ecoregion Litoral Central (Avila et al, 2018…”

“…Paraguay, South America, is divided into two broad regions by the Paraguay River: The Occidental Region and the Oriental Region. The Central Department is located in the middle of Paraguay with a range of ecosystems, from natural grasslands, gallery forests, flood plains along the Paraguay River to wetlands around the Ypacarai Lake (Avila et al, 2018). It is also the most populated place of the country, as the mayor cities are located within its limits.…”

Areas of endemism conservation hot spots of Paraguay: A study using a multiscale and diverse taxa approach

“…Moreover, despite the presence of several continental and global scale schemes (e.g., Holdridge 1947, Cabrera and Willink 1973, Udvardy 1975, Huek 1978, Dinerstein et al 1995, the biogeography of Paraguay has been poorly studied; see Avila et al (2018) for a review on the subject. The most recent study of biogeography in Paraguay was that conducted by Cabral et al (2020).…”