scholarly journals Environmental Problems and Coastal Mitigation in South America: Examples from Northeast Brazil and Northern Colombia

2020 ◽  
Author(s):  
Vanda Claudino-Sales ◽  
Ping Wang ◽  
Fábio Perdigão Vasconcelos ◽  
Adely Pereira Silveira
Keyword(s):  
South America ◽  
Environmental Problems ◽  
Northeast Brazil

Evidence of An Early Cretaceous Giant Dyke Swarm in Northeast Brazil (South America): A Geodynamic Overview

2016 ◽  
Vol 90 (s1) ◽  
pp. 109-110
Author(s):  
Maria Helena B.M. HOLLANDA ◽  
Carlos J. ARCHANJO ◽  
Paul R. RENNE ◽  
Donald E. NGONGE ◽  
David L. CASTRO ◽  
...  
Keyword(s):  
South America ◽  
Early Cretaceous ◽  
Dyke Swarm ◽  
Northeast Brazil

Piper (Piperaceae) in eastern Northeast Brazil

Phytotaxa ◽  
2021 ◽  
Vol 505 (1) ◽  
pp. 1-38
Author(s):  
ALINE MELO ◽  
MARCCUS ALVES
Keyword(s):  
South America ◽  
Atlantic Forest ◽  
New Records ◽  
Northeast Brazil ◽  
Brazilian Atlantic Forest ◽  
Northeastern Region ◽  
First Time

Brazil is considered one of the richest countries in Piper species in South America, with the genus being considered one of the most representative of the Brazilian Atlantic Forest. The aim of this study is to improve the knowledge about Piper in the northeastern region of Brazil, and to this end, we recorded the taxa that occur in the eastern portion of this region. Collection expeditions were conducted in the study area between August 2017 and July 2019, 21 herbaria were visited, and other internationally important collections were consulted online. Thirty tree taxa were registered, from which one was recorded for the northeastern region for the first time (P. nematanthera), besides 11 new records for at least one of the states. We present a synopsis with comments about morphology, habitat and phenology.

scholarly journals Two Contrasting Severe Seasonal Extremes in Tropical South America in 2012: Flood in Amazonia and Drought in Northeast Brazil

2013 ◽  
Vol 26 (22) ◽  
pp. 9137-9154 ◽  
Author(s):  
Jose A. Marengo ◽  
Lincoln M. Alves ◽  
Wagner R. Soares ◽  
Daniel A. Rodriguez ◽  
Helio Camargo ◽  
...  
Keyword(s):  
South America ◽  
Atmospheric Circulation ◽  
Rainy Season ◽  
Austral Summer ◽  
Active Role ◽  
Severe Drought ◽  
Northeast Brazil ◽  
Normal Surface ◽  
Dry Conditions ◽  
Tropical South America

Abstract Two simultaneous extreme events affected tropical South America to the east of the Andes during the austral summer and fall of 2012: a severe drought in Northeast Brazil and intense rainfall and floods in Amazonia, both considered records for the last 50 years. Changes in atmospheric circulation and rainfall were consistent with the notion of an active role of colder-than-normal surface waters in the equatorial Pacific, with above-normal upward motion and rainfall in western Amazonia and increased subsidence over Northeast Brazil. Atmospheric circulation and soil moisture anomalies in the region contributed to an intensified transport of Atlantic moisture into the western part of Amazonia then turning southward to the southern Amazonia region, where the Chaco low was intensified. This was favored by the intensification of subtropical high pressure over the region, associated with an anomalously intense and northward-displaced Atlantic high over a relatively colder subtropical South Atlantic Ocean. This pattern observed in 2012 was not found during other wet years in Amazonia such as 1989, 1999, and 2009. This suggests La Niña as the main cause of the abundant rainfall in western Amazonia from October to December, with wet conditions starting earlier and remaining until March 2012, mostly in northwestern Amazonia. The anomalously high river levels during the following May–July were a consequence of this early and abundant rainy season during the previous summer. In Northeast Brazil, dry conditions started to appear in December 2011 in the northern sector and then extended to the entire region by the peak of the rainy season of February–May 2012.

scholarly journals Raillietiella mottae (Pentastomida: Raillietiellidae) infecting Ameiva ameiva (Squamata: Teiidae) in Araripe Plateau, Northeast Brazil

2019 ◽  
Vol 79 (1) ◽  
pp. 100-103 ◽  
Author(s):  
E. G. Silva ◽  
M. E. P. Santos ◽  
S. V. Brito ◽  
W. O. Almeida ◽  
S. C. Ribeiro
Keyword(s):  
South America ◽  
Environmental Protection ◽  
First Record ◽  
Northeast Brazil ◽  
Infection Rates ◽  
Intermediate Hosts ◽  
Environmental Protection Area ◽  
Protection Area

Abstract We investigated the infection by pulmonary parasites in the lizard Ameiva ameiva (Teiidae) inhabiting the Environmental Protection Area of Araripe (APA-Araripe). A total of 45 specimens were collected in three areas between the cities of Várzea Alegre and Barbalha. A Pentastomid species (Raillietiella mottae) was parasitizing (nine specimens) a male of A. ameiva with a prevalence of 2.22% considering all lizards collected in the region and prevalence of 50% considering only rainforest environment. The Pentastomids infection rates shown in this study are similar to data found for infections of other insectivorous lizards. Raillietiella mottae is considered a generalist parasite, which uses insects as intermediate hosts. The results of this study represent the first record of a Pentastomid infecting this species of lizard in South America.

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