Forest, agriculture and land conversion: Environmental efficiency in Brazilian Amazon rainforest

2021 ◽  
Vol 133 ◽  
pp. 102615
Author(s):  
Henrique Ryosuke Tateishi ◽  
Cassiano Bragagnolo ◽  
Alexandre Nunes de Almeida
Keyword(s):  
Brazilian Amazon ◽  
Environmental Efficiency ◽  
Amazon Rainforest ◽  
Land Conversion

Furuncular Myiasis by Dermatobia hominis (Diptera: Oestridae) in Wild Jaguars in the Amazon Rainforest

2021 ◽  
Author(s):  
Matheus Mickael Mota Soares ◽  
Luana Machado Barros ◽  
Daniela Aparecida Savariz Bôlla ◽  
Marlus Queiroz Almeida ◽  
Diego da Costa Souza ◽  
...  
Keyword(s):  
Brazilian Amazon ◽  
First Record ◽  
Amazon Region ◽  
Amazon Rainforest ◽  
Panthera Onca ◽  
Dermatobia Hominis ◽  
Furuncular Myiasis

Abstract Two individuals of the jaguar, Panthera onca (L.), were captured near the municipality of Presidente Figueiredo, Brazilian Amazon, during the years of 2017 and 2018. The jaguars presented furuncular myiasis caused by the human botfly Dermatobia hominis (L.) on the rear thighs and tail. This is the first record of infestation of D. hominis in P. onca in the Amazon region.

Linked Brazilian Amazon Rainforest Data

Semantic Web ◽  
2014 ◽  
Vol 5 (2) ◽  
pp. 151-155 ◽  
Author(s):  
Tomi Kauppinen ◽  
Giovana Mira de Espindola ◽  
Jim Jones ◽  
Alber Sánchez ◽  
Benedikt Gräler ◽  
...  
Keyword(s):  
Brazilian Amazon ◽  
Amazon Rainforest

Notes on gasteroid fungi of the Brazilian Amazon rainforest

Mycotaxon ◽  
2009 ◽  
Vol 110 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Larissa Trierveiler-Pereira ◽  
Allyne Christina Gomes-Silva ◽  
Iuri Goulart Baseia
Keyword(s):  
Brazilian Amazon ◽  
Amazon Rainforest

scholarly journals Understory host plant and insect gall diversity changes across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest

2017 ◽  
Vol 47 (3) ◽  
pp. 237-246 ◽  
Author(s):  
Genimar Rebouças JULIÃO ◽  
Emmanuel Duarte ALMADA ◽  
Flávia Regina Capellotto COSTA ◽  
Marco Antônio Alves CARNEIRO ◽  
G. Wilson FERNANDES
Keyword(s):  
Water Stress ◽  
Species Composition ◽  
Host Plant ◽  
Host Plants ◽  
Water Status ◽  
Brazilian Amazon ◽  
Amazon Rainforest ◽  
Terra Firme ◽  
Plant Richness ◽  
Valley Slope

ABSTRACT Topographic gradients in terra firme forests are associated with pronounced changes in soil texture, soil nutrients and distance to the water-table, thereby creating different hydric and nutritional conditions for plants and their associated herbivore community. The aim of this study was to investigate galling species and host plant richness and gall species composition across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest. Nineteen 250 x 3 m plots were randomly sampled in the valley, slope, plateau-slope transition, and plateau habitats in terra firme forests. All individual dicotyledonous plants 1 to 3 meters high were examined for the presence of insect galls. Galling species and host plant richness differed significantly among the studied habitats and were higher in slope habitats (drier habitats), as expected. More humid areas (valleys) showed the lowest richness of galling species, and a lower number of understory host plants. PERMANOVA and PERMDISP results demonstrated that the gall species composition differed significantly in the valley, slope, plateau-slope transition, and plateau areas. However, these structural differences in species composition could be due to unequal dispersion of variability among forest habitats. Our data suggested that spatial heterogeneity, such as a mosaic of local water status and nutrient availability resulting from the topographic conditions, can affect host plants and their associated galling insects.

scholarly journals Is the social wasp fauna in the tree canopy different from the understory? Study of a particular area in the Brazilian Amazon Rainforest

Sociobiology ◽  
2019 ◽  
Vol 66 (1) ◽  
pp. 179 ◽  
Author(s):  
Alexandre Somavilla ◽  
Raimundo Nonato Martins de Moraes Junior ◽  
José Albertino Rafael
Keyword(s):  
Strong Relationship ◽  
Brazilian Amazon ◽  
Social Wasp ◽  
Social Wasps ◽  
Tree Canopy ◽  
Amazon Rainforest ◽  
Forest Understory ◽  
Insect Community ◽  
The Social ◽  
The Difference

Most studies about the insect community in rainforests only focus on the forest understory, and even though the rainforest canopy is one of the most fascinating and diverse environments, it remains poorly explored. Therefore, we analyzed the difference between the social wasp composition in these two strata at the ZF-2 Station in the Brazilian Amazon Rainforest, using flight interception traps (Malaise model Gressi and Gressi), in the rainforest understory and canopy. We collected ninety-two species belonging to 18 genera; Polybia was the richest genera (22 species), followed by Mischocyttarus (14) and Agelaia (13). Forty-four species were exclusively collected in the understory, twenty exclusively collected in the canopy, and twenty-eight in both strata. The understory was distinctly more diverse and more abundant than the canopy, while some rare or poorly collected species were only found in the canopy. We found a strong relationship between the species composition at the ZF-2 Station and the Ducke Reserve. Therefore, we suggest using traps in canopy in the Amazon biome as an effective method for collecting a higher diversity of social wasps.

Review of the genus Ceratotarsonemus De Leon, 1956 (Acari: Prostigmata: Tarsonemidae), with description of a new species from the Amazon Forest

Zootaxa ◽  
2018 ◽  
Vol 4483 (2) ◽  
pp. 271
Author(s):  
JOSÉ MARCOS REZENDE ◽  
ANTONIO CARLOS LOFEGO ◽  
CONNOR GULBRONSON ◽  
GARY BAUCHAN ◽  
RONALD OCHOA
Keyword(s):  
Phase Contrast ◽  
Brazilian Amazon ◽  
Amazon Rainforest ◽  
Amazon Forest ◽  
Differential Interference Contrast ◽  
Ecological Aspects ◽  
Temperature Scanning ◽  
A New Species ◽  
Scanning Electron

The genus Ceratotarsonemus De Leon (Acari: Prostigmata: Tarsonemidae) is reviewed here, with the addition of an updated key for the genus. Ceratotarsonemus amazonicus, sp. nov., found in the Brazilian Amazon rainforest, is described. Phase contrast (PC), differential interference contrast (DIC), low temperature scanning electron microscopy (LT-SEM) and confocal microscopy (CLSM) micrographs are provided. Biological and ecological aspects about the role of this species in its ecosystem are also discussed. 

scholarly journals The Covid-19 explosion in the state of Amapá: how is the most preserved region in the Brazilian Amazon currently fighting the SARS-COV 2 pandemic?

2020 ◽  
Vol 2 (5) ◽  
pp. 3-11
Author(s):  
Eber Coelho Paraguassu ◽  
Anneli Mercedes Celis de Cardenas ◽  
Rosemary Ferreira de Andrade ◽  
Carlo La Vecchia ◽  
Saad B. Omer ◽  
...  
Keyword(s):  
Brazilian Amazon ◽  
The State ◽  
Amazon Rainforest ◽  
The Sun ◽  
Humid Climate ◽  
Hot And Humid Climate ◽  
Extreme North ◽  
Whole Egg

The state of Amapá is located in the extreme north of Brazil, within the Amazon rainforest and is crossed by the Equator. It has a hot and humid climate with rains that last 8 months a year and 4 months of unrelenting sun that melts rubber from car seals, fries eggs on the floor and even cooks a whole egg tub, in case you forget in a car exposed to the sun . It was believed that with this potent solar incidence, the Sars-COV 2 virus would not have so much impact in this region, a terrible mistake! Today Amapá has the highest incidence of Covid-19 in the whole of Brazil, with a maid of 600 cases per hundred thousand inhabitants and in the Amazon it is the 3rd in deaths and loses in this item only to the state of Amazonas and Pará.

Long-term satellite image time series for the assesment of land use/cover change in the Brazilian Amazon rainforest

2018 ◽  
Author(s):  
Luiz E. Christovam ◽  
Maria L. B. T. Galo ◽  
Milton H. Shimabukuro ◽  
Franciele M. Tolentino ◽  
Leandro F. Coladello
Keyword(s):  
Land Use ◽  
Time Series ◽  
Satellite Image ◽  
Brazilian Amazon ◽  
Amazon Rainforest

Characterisation and valorisation of the bark of Myrcia eximia DC. trees from the Amazon rainforest as a source of phenolic compounds

Holzforschung ◽  
2020 ◽  
Vol 74 (10) ◽  
pp. 989-998 ◽  
Author(s):  
Elesandra da Silva Araujo ◽  
Graciene da Silva Mota ◽  
Mário Sérgio Lorenço ◽  
Uasmim Lira Zidanes ◽  
Lucas Rodrigues da Silva ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Radical Scavenging Activity ◽  
Condensed Tannin ◽  
Radical Scavenging ◽  
Water Extract ◽  
Brazilian Amazon ◽  
Butylated Hydroxytoluene ◽  
Amazon Rainforest ◽  
Bark Extract ◽  
Secondary Forests

AbstractThe bark of the tree species Myrcia eximia DC., which occurs in secondary forests in the Brazilian Amazon, is described for the first time. The aim was to provide a broad knowledge of its composition, to add value, and to direct uses to the bark of this species based on its polyphenolic content and antioxidant capacity. The bark is formed by conducting phloem, nonconducting phloem, and rhytidome. In addition, dead phloem occurs between the periderms. The average chemical composition of the bark was 45.6% total extractives, 1.4% suberin, 1.7% ash, and 21.1% lignin. The ethanol-water extract had a high content of flavonoids and condensed tannins [300.8 and 877.3 mg catechin equivalents (CE) g−1 of the extract, respectively]. High-performance liquid chromatography (HPLC) was used to quantify the presence of rutin, quercetin, and gallic, ferulic, and o-coumaric acids. The bark extract showed strong 2,2-diphenyl-1-picrylhydrazyl hydrate (DPPH) free radical scavenging activity, which was superior to that of the commercial antioxidant butylated hydroxytoluene (BHT), with an IC50 of 85.2 μg mL−1. Based on these results, it is evident that the bark of M. eximia from the Brazilian Amazon rainforest is a new and potential natural source of phenolic compounds and antioxidants, and its extracts can be used in the food and pharmaceutical industry and in various condensed tannin-based products.

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