scholarly journals Analysis of significant stratospheric ozone reductions over southern Brazil: A proposal for a diagnostic index for southern South America

2021 ◽  
Vol 28 (6) ◽  
Author(s):  
Gustavo Rasera ◽  
Vagner Anabor ◽  
Luiz Angelo Steffenel ◽  
Damaris Kirsch Pinheiro ◽  
Franciano Scremin Puhales ◽  
...  
Keyword(s):  
South America ◽  
Stratospheric Ozone ◽  
Southern Brazil ◽  
Southern South America ◽  
Diagnostic Index

scholarly journals Geographic variation in ectoparasitic mites diversity in Tadarida Brasiliensis (Chiroptera, Molossidae)

2014 ◽  
Vol 104 (4) ◽  
pp. 451-456
Author(s):  
Tatiana C. Pesenti ◽  
Sâmara N. Gomes ◽  
Ana M. Rui ◽  
Gertrud Müller
Keyword(s):  
United States ◽  
South America ◽  
United States Of America ◽  
Its Region ◽  
Southern United States ◽  
Lower Prevalence ◽  
Southern Brazil ◽  
Tadarida Brasiliensis ◽  
Southern South America ◽  
Prevalent Species

Tadarida brasiliensis (Geoffroy, 1824), the Brazilian free-tailed bat, is an insectivorous bat that occurs from southern United States of America to southern South America. In this study we present the first data on diversity of ectoparasitic mites of T. brasiliensis in Brazil. A compilation and analysis of the studies of mite diversity conducted in different points the geographic distribution this bat species are provided. The mites were collected from March 2010 to November 2011 on 160 T. brasiliensis adult bats captured in southern Brazil. Four species of mites have been found: Chiroptonyssus robustipes (Ewing, 1925), Ewingana longa (Ewing, 1938), Ewingana inaequalis (Radford, 1948), and specimens of Cheyletidae. Chiroptonyssus robustipes was the most prevalent species (100%), followed by E. longa (20%), E. inaequalis (10%), and specimens of Cheyletidae (1.25%). The data currently available show that C. robustipes parasitizes T. brasiliensis throughout its region of occurrence, and this mite is highly prevalent and abundant. The two species of Ewingana accompany the geographical distribution of T. brasiliensis, but with much lower prevalence and abundance.

scholarly journals Squamata, Serpentes, Micrurus silviae Di-Bernardo, Borges-Martins and Silva, 2007: presence confirmation in Paraguay

Check List ◽  
2011 ◽  
Vol 7 (6) ◽  
pp. 809 ◽  
Author(s):  
Pier Cacciali ◽  
Daniel Espínola ◽  
Silvia Centrón Viñales ◽  
Irene Gauto Espínola ◽  
Hugo Cabral
Keyword(s):  
South America ◽  
Rio Grande ◽  
South American ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Southern South America ◽  
Natural Grassland

Micrurus silviae is a coralsnake with a triadal pattern, and is one of the eight species found in southern South America. In Paraguay there are six taxa recorded: M. altirostris, M. baliocoryphus, M. frontalis, M. pyrrhocryptus, M. corallinus, and M. lemniscatus carvalhoi. Here we present a record of M. silviae, an additional and seventh species for the country. Previously M. silviae was known only from Rio Grande do Sul state, in southern Brazil. The specimen was found in South American Mesopotamian Grasslands ecoregion, with natural grassland in the Department of Itapúa.

scholarly journals Occurrence of Cabassous tatouay (Cingulata, Dasypodidae) in Rio Grande do Sul and its potential distribution in southern Brazil

2015 ◽  
Vol 105 (2) ◽  
pp. 235-241 ◽  
Author(s):  
Stefan V. de Oliveira ◽  
Luiz L. C. Corrêa ◽  
Felipe B. Peters ◽  
Fábio D. Mazim ◽  
Felipe M. Garcias ◽  
...  
Keyword(s):  
South America ◽  
Rare Species ◽  
Ecological Niche ◽  
Potential Distribution ◽  
Ecological Niche Modeling ◽  
Rio Grande ◽  
Niche Modeling ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Southern South America

ABSTRACT Cabossous tatouay Desmarest, 1804 is considered a rare species in southern South America, and Rio Grande do Sul State, Brazil, records of the species are scarce and inaccurate. This study reports 40 localities for C. tatouay, and provides a map of the species' potential distribution using ecological niche modeling (ENM). The ENM indicated that in this region C. tatouay is associated with open grasslands, including the areas of "Pampas" and the open fields in the highlands of the Atlantic Forest. This study contributes to the information about the greater naked-tailed armadillo in southern Brazil, and provides data key to its future conservation.

On the taxonomy of southern South American species of the wolf spider genus Allocosa (Araneae: Lycosidae: Allocosinae)

Zootaxa ◽  
2017 ◽  
Vol 4216 (3) ◽  
pp. 261 ◽  
Author(s):  
MIGUEL SIMÓ ◽  
ARNO A. LISE ◽  
GABRIEL POMPOZZI ◽  
ÁLVARO LABORDA
Keyword(s):  
New Species ◽  
South America ◽  
Posterior Margin ◽  
Wolf Spider ◽  
South American ◽  
Southern Brazil ◽  
South American Species ◽  
Southern South America ◽  
First Time ◽  
A New Species

Three species of the genus Allocosa Banks, 1900 from southern South America are redescribed: Allocosa alticeps (Mello-Leitão, 1944), A. brasiliensis (Petrunkevitch, 1910) and A. senex (Mello-Leitão, 1945). The female of A. senex is described for the first time and the species is revalidated. A new species, A. marindia sp. nov. from southern Uruguay and southern Brazil is described. The new species is distinguished by the flattened terminal apophysis of the male bulb and the conspicuous pointed projections on the posterior margin of the female epigynum. The species inhabits in sandy estuarine and oceanic coasts with psammophile vegetation. 

scholarly journals Two new species of Bryconamericus Eigenmann (Characiformes: Characidae) from southern Brazil

2004 ◽  
Vol 2 (2) ◽  
pp. 55-60 ◽  
Author(s):  
José Francisco Pezzi da Silva
Keyword(s):  
New Species ◽  
South America ◽  
Southern Brazil ◽  
Body Depth ◽  
Southern South America ◽  
Two New Species ◽  
Fin Rays ◽  
Eye Diameter ◽  
Fin Length ◽  
Pelvic Fin

Two new species of Bryconamericus are described from southern Brazil: B. patriciae, from the headwaters of rio Pelotas (rio Uruguay drainage) and rio das Antas (laguna dos Patos drainage) and B. ecai from lower rio Taquari drainage. Bryconamericus patriciae differs from other Bryconamericus species from southern South America, by the following combination of characters: body depth (25.5-30.3% SL); head length (25.2-27.6% SL); pelvic-fin length (11.0-14.4% SL); branched anal-fin rays 14-18; teeth of outer row of premaxilla regularly implanted; teeth of inner row of premaxilla pentacuspid; teeth compressed distally; and males with bony hooks on pelvic and anal fins. Bryconamericus ecai differs from other Bryconamericus species from southern South America by the following combination of characters: body depth (33.1-36.9% SL); eye diameter (31.1-33.9% HL); snout length (26.8-32.4% HL); branched anal-fin rays 15-18; teeth of outer row of premaxilla regularly implanted; teeth of inner row of premaxilla tricuspid or pentacuspid; teeth compressed distally; and males with bony hooks on pelvic and anal fins.

scholarly journals Southern Annular Mode drives multicentury wildfire activity in southern South America

2017 ◽  
Vol 114 (36) ◽  
pp. 9552-9557 ◽  
Author(s):  
Andrés Holz ◽  
Juan Paritsis ◽  
Ignacio A. Mundo ◽  
Thomas T. Veblen ◽  
Thomas Kitzberger ◽  
...  
Keyword(s):  
South America ◽  
Southern Hemisphere ◽  
Time Scales ◽  
Climate Modeling ◽  
Stratospheric Ozone ◽  
Southern Annular Mode ◽  
Southern South America ◽  
Annular Mode ◽  
Climate Conditions ◽  
Fire Activity

The Southern Annular Mode (SAM) is the main driver of climate variability at mid to high latitudes in the Southern Hemisphere, affecting wildfire activity, which in turn pollutes the air and contributes to human health problems and mortality, and potentially provides strong feedback to the climate system through emissions and land cover changes. Here we report the largest Southern Hemisphere network of annually resolved tree ring fire histories, consisting of 1,767 fire-scarred trees from 97 sites (from 22 °S to 54 °S) in southern South America (SAS), to quantify the coupling of SAM and regional wildfire variability using recently created multicentury proxy indices of SAM for the years 1531–2010 AD. We show that at interannual time scales, as well as at multidecadal time scales across 37–54 °S, latitudinal gradient elevated wildfire activity is synchronous with positive phases of the SAM over the years 1665–1995. Positive phases of the SAM are associated primarily with warm conditions in these biomass-rich forests, in which widespread fire activity depends on fuel desiccation. Climate modeling studies indicate that greenhouse gases will force SAM into its positive phase even if stratospheric ozone returns to normal levels, so that climate conditions conducive to widespread fire activity in SAS will continue throughout the 21st century.

Additions to the Placopsis mycobiota (Trapeliaceae, Ascomycota) of southern South America, with notes on new records (including Aspiciliopsis macrophthalma), and a revised regional key to the species

2010 ◽  
Vol 42 (6) ◽  
pp. 727-737 ◽  
Author(s):  
David J. GALLOWAY
Keyword(s):  
South America ◽  
New Records ◽  
Southern South America ◽  
First Time

AbstractAspiciliopsis macrophthalma, Placopsis fusciduloides, P. gelidioides and P. tararuana are reported for the first time from southern South America. New records for 13 species of Placopsis in southern South America are reported, and a revised key to 22 species of Placopsis and A. macrophthalma in the region is given.

Sign in / Sign up

Export Citation Format

Share Document