scholarly journals Survey of leaf-cutting ant species in the central region of the state of Tocantins, Brazil

2023 ◽  
Vol 83 ◽  
Author(s):  
K. F. S. Colombari ◽  
R. T. Fujihara ◽  
D. R. Souza-Campana ◽  
C. T. Wazema ◽  
E. S. Souza
Author(s):  
S.E. Mikhalin S.E. ◽  

The article sets out information on the conduct of soil control of the potato elite, provides information on the state of elite seed production of potatoes in the Central region of Russia according to the data of soil control - which regions participated in its implementation, how many samples and varieties of potatoes were provided for soil control in different years, what were the main varieties, which potato diseases were taken into account.


2015 ◽  
Vol 48 (5) ◽  
pp. 622-625 ◽  
Author(s):  
Lais de Souza Braga ◽  
Taísa Rocha Navasconi ◽  
Elen Paula Leatte ◽  
Cissiara Manetti Skraba ◽  
Thaís Gomes Verzignassi Silveira ◽  
...  

2017 ◽  
Vol 17 (4) ◽  
Author(s):  
Etielle Barroso de Andrade ◽  
Luiz Norberto Weber ◽  
José Roberto de Souza Almeida Leite

Abstract The Cerrado is one of the most threatened biomes in Brazil. It is estimated that much of its original vegetation has been replaced by some type of human use. This is quite worrying, mainly in the northern part where the number of wildlife inventories is insufficient and creates the false impression of low diversity in the region. The Parque Estadual do Mirador-PEM, located in the south-central region of the state of Maranhão, presents vegetation typical of the Cerrado biome and corresponds to one of 46 priority areas for conservation in the state. Herein, we describe the species richness and composition of the anurofauna from the PEM and analyze the influence of different types of vegetation in its formation. Our inventory was conducted from December 2013 to February 2015, using the active search and auditory census methods on breeding sites in different water bodies of the park. We recorded 31 anuran species belonging to five families (species number in parentheses): Leptodactylidae (14), Hylidae (12), Bufonidae (3), Microhylidae (1) and Phyllomedusidae (1). The rarefaction curve and species richness estimators indicated that the sampling effort was enough to record most of the species in the region. The richness of anurans in the PEM was higher than reported by other authors for several areas of Cerrado. Most species have a wide distribution in Brazil or are strongly associated with the Caatinga or Amazon biomes. Only about 19% are endemic to the Cerrado biome. This study is the first to inventory the anurans species of the south-central region of state of Maranhão and provides important data on amphibian communities from the northern part of the Brazilian Cerrado.


Agronomy ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 382
Author(s):  
Gustavo Celestino Ortiz-Ceballos ◽  
Mónica Vargas-Mendoza ◽  
Angel Isauro Ortiz-Ceballos ◽  
Martín Mendoza Briseño ◽  
Gustavo Ortiz-Hernández

This study quantifies the aboveground C storage of coffee agroecosystems (AESs) present in the Xalapa–Coatepec region of the state of Veracruz, one of the most important coffee producing regions in Mexico. We identified and determined the spatial distribution of five different types of coffee AESs. Then, through the point-centered quarter method, we measured canopy coverage, total height, diameter at breast height and density of tree species at 160 randomly selected sampling sites. Using allometric models, we estimated the aboveground biomass and the stored aboveground C by tree species and type of AES; and finally, we scaled up our results at the regional level. We found out that the coffee AESs with the greatest and the lowest potential for storing aboveground C are coffee (Co) + talltrees (tree stratum mainly composed of species taller than 15 m) and Co + AcaciaInga (tree stratum mainly composed by Acacia pennatula), with a carbon density as 73.27 Mg C ha − 1 and 38.47 Mg C ha − 1 respectively. The 91.2% of the total aboveground C in the studied region is stored by two coffee AES types: Co + talltrees and Co + Inga (tree stratum composed by Inga sp.). The aboveground C storage potential of all five coffee AESs in the central region of Veracruz is 2.43 million Mg C with an average carbon density of 55.12 Mg C ha − 1 . These results assert that coffee AESs should be considered important C sinks that contribute to the adaptation and mitigation of climate change.


Phytotaxa ◽  
2020 ◽  
Vol 447 (3) ◽  
pp. 209-215
Author(s):  
ANA GABRIELA ZACARÍAS-CORREA ◽  
EMMANUEL PÉREZ-CALIX ◽  
MARIE-STÉPHANIE SAMAIN

Penstemon dugesii is described from the central region of the state of Guanajuato, Mexico. This species belongs to Penstemon subg. Penstemon sect. Fasciculus. Here, we describe this new species and compare it with P. coriaceus, to which it is morphologically most similar. We also propose its conservation status and provide a distribution map of both species.


2019 ◽  
Vol 12 (2) ◽  
pp. 33-47
Author(s):  
ERIKCSEN AUGUSTO RAIMUNDI

Gioás State is located in the Central Region of Brazil belonging to a massive area of the Cerrado biome. The knowledge of Ephemeroptera in Goiás is limited by few derived from punctual collections. As result of a survey in 25 sample sites of Goiás, I present a taxonomic contribution of Ephemeroptera from the State. From the total of 830 specimens collected, 21 genera and 25 species were recorded. Caenidae (Caenis) is recorded from Goiás for the first time, as well as new records of 10 genera and 16 species. Key words: Cerrado; Checklist; Neotropics; Brazilian Savanna; mayfly; taxonomy


2015 ◽  
Vol 67 (2) ◽  
pp. 441-446 ◽  
Author(s):  
A.S. Zucatto ◽  
M.C.C. Aquino ◽  
S.V. Inácio ◽  
R.N. Figueiredo ◽  
J.C. Pierucci ◽  
...  

Considering the proximity of sheep farmers to animals that are possibly diseased or releasing fecal oocysts into the environment and the marked pathogenicity in lambs, the aim of this study was to determine the occurrence and to molecularly characterize the infection by Cryptosporidium spp. in lambs in the South Central region of the state of São Paulo, Brazil. A total of 193 fecal samples were collected from sheep of several breeds, males and females, aged up to one year. Polymerase chain reaction (nested-PCR) was used to amplify DNA fragments from the subunit 18S rRNA gene and indicated 15% positivity; sequencing of amplified fragments was possible for 19 samples. Analysis of the obtained sequences showed that the identified species were Cryptosporidium xiaoi for 15 samples, constituting thus the first molecular characterization study of this Cryptosporidium species in Brazil. Cryptosporidium ubiquitum was identified for three samples and Cryptosporidium meleagridis for one sample; the latter two are considered zoonotic species.


1981 ◽  
Vol 3 (3) ◽  
pp. 65
Author(s):  
Maria Lacy Cezimbra Weis ◽  
Ilca Marion Knewitz Bossemeyer ◽  
Horst Oscar Lippold

Among the specimens of the Cichlidae family collected in the central region of the State of Rio Grande do Sul (Brazil), the initial studies were done in genera represented by orbicular forms, which comprise: Aequidens, Cichlaurus and Geophagus. Of these genera, four species were found in different proportions: Aequidens portalegrensis, Cichlaurus facetus, Geophagus brasiliensis and Geophagus gymnogenys.


1999 ◽  
Vol 26 (1) ◽  
pp. 3
Author(s):  
MARGOT GUERRA SOMMER ◽  
MIRIAM CAZZULO KLEPZIG ◽  
ROBERTO IANNUZZI ◽  
LAUREN SALLY ALVES

A Triassic taphoflora identified in the Central Region of the State of Rio Grande do Sul, southern Brazil, represents an important biostratigraphic stage in the paleofloristic succession of the Paraná Basin. This megafloristic association is composed of compressed leaves, fronds and seeds of a “Dicroidium Flora” and shows a predominance of the Dicroidium genus, with several species, and other important taxa like Neocalamites sp, Cladophlebis sp, Tetraptilon aff, heteromerum, Ginkgoites Antarctica, Sphenobaiera sp, Podozamites sp, Nilssonia sp, Pteruchus sp and Carpolithus sp. Taking into account the stratigraphical distribution of different species of the Dicroidium genus, a biostratigraphic framework was established. The biostratigraphical position of this Triassic flora was established by comparison with Triassic floras from Argentina, South Africa and Australasia. Considering that the recognition of this Dicroidium Flora was based on limited outcrops belonging to one lithostratiphic level (Santa Maria Formation – Passo das Tropas Facies), it was impossible to establish a formal biostratigraphic zonation. Instead, at present time, an informal floristic interval, named “Dicroidium odontopteroides Flora” is proposed (Late Anisian to Late Ladinian, Middle Triassic).


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