Distribuições de Tendências Sazonais de Temperatura Média e Precipitação nos Biomas Brasileiros

Penereiro, Júlio César; Badinger, Anna; Maccheri, Nicole Augusto; Meschiatti, Monica Cristina

doi:10.1590/0102-7786331012

Cited by 23 publications

(12 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This biome covers important aquifers and rivers [2] and is located in the central area of the country, being the origin of large hydrographic regions in Brazil and in the South American continent [3,4]. However, Lee et al [5], Debortoli et al [6] and Penereiro et al [7] reported reduction of approximately 70 mm in annual precipitation in the Cerrado region between 1979 and 2006, indicating an extension of the dry season. Furthermore, although with great biological diversity, the biome is under continuous threat of extinction due to the expansion of agriculture and pastures, as occurs with other biomes [2,8].…”

Section: Introductionmentioning

confidence: 99%

Impact of Drought and Flooding on Alkaloid Production in Annona crassiflora Mart

et al. 2021

View full text Add to dashboard Cite

The Brazilian Cerrado is the second largest Brazilian biome. In recent decades, a reduction in rainfall has indicated an extension of the dry season. Among the many native species of the Cerrado of the Annonaceae family and used in folk medicine, Annona crassiflora Mart. has fruits of high nutritional value and its by-products are sources of bioactive compounds, such as alkaloids. The aim of the study was to investigate how water stress impacts the production of alkaloids. The study was carried out in a nursery, and the knowledge was flood, field capacity and drought. Gas exchange, chlorophyll a fluorescence, antioxidant enzymes, total soluble sugars, starch, reducing sugars, sucrose, total alkaloids and liriodenine were analyzed. We observed that plants subjected to drought had an increase in the production of total alkaloids and liriodenine, without a reduction in photosynthetic metabolism. Plants kept under drought and flood conditions dissipated higher peroxidase activity, while catalase was higher in flooded plants. Starch showed the highest concentration in flooding plants without differing from drought plants; the lowest trehalose concentrations were found in both drought and flooding plants. The drought stimulated the synthesis of total alkaloids and liriodenine without reducing the primary metabolism, which suggests adaptation to Cerrado conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Impact of Drought and Flooding on Alkaloid Production in Annona crassiflora Mart

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The result of the Mann-Kendall Seasonal test indicated that, for most of the monitoring stations (78%), there was no significant rainfall trend (p-value> 0.05) (Figure 6). The prominent absence of a significant trend in pluviometric data was also observed by Penereiro et al (2018), when analyzing Brazilian municipalities located in several biomes. The authors specified that of the 70 municipalities studied in the Cerrado, 60 did not show significant trends of either reduction or increase.…”

Section: /13mentioning

confidence: 54%

Pluviometric patterns in the São Francisco River basin in Minas Gerais, Brazil

Ferreira

Barroso

Dantas

et al. 2021

RBRH

View full text Add to dashboard Cite

This work aimed to evaluate the spatial-temporal variability of precipitation in the Minas Gerais section of the São Francisco River basin, an area of substantial socio-environmental relevance for the country and which has presented recent events of water scarcity. Multivariate and non-parametric statistical analyses were applied to the monthly precipitation data from 131 pluviometric stations, covering a period from 1989 to 2018. The results indicated distinct homogeneous pluviometric regions with greater spatial variability in rainfall patterns in the southern regions of the basin. Results from the temporal analysis indicated seasonality in the rainfall patterns for all seasons, with the rainy period predominantly occurring between October and March for the entire Minas Gerais section of the São Francisco River basin. No rainfall trend was identified in 78% of the stations, with the other stations (22%) showing a trend toward a reduction in rainfall volume.

show abstract

“…The collection areas are about 1.500 km away and differ in vegetation and annual average temperatures. The Pampa biome has more challenging periods of low rainfall than the Atlantic Forest, which is known to be humid (PENEREIRO et al, 2018). Perhaps, this relationship between the selective pressure of the environment on kidney morphology can play a role in understanding the differences found in renal dimensions between the two populations.…”

Section: Discussionmentioning

confidence: 99%

Dimensions and skeletopy of kidneys in two populations of Cerdocyon thous (Linnaeus, 1766)

Souza

Peçanha

et al. 2020

AVB

View full text Add to dashboard Cite

Article history Cerdocyon thous is the South American canid with great geographic distribution. To the south of Ecuador, two isolated populations have been identified, living in different average temperatures and food availability. The objective was to measure the length, width, thickness and volume of the kidneys, length of renal vessels, and verify the renal skeletopy in two populations of C. thous. Kidneys and renal vessels were measured from 34 cadavers collected on highways in the Brazilian territory. From the Atlantic Forest biome (latitude 22º), 14 specimens (seven males and seven female) were analyzed, and from the Pampa biome (latitude 29º), 20 specimens (eight males and twelve female). On average, in the right antimere the kidneys measured 49.9  25.2  24.4 mm, had a volume of 16.5 cm 3 , the renal artery measured 21.3 mm and the renal vein 19.4 mm. In the left antimere, the kidneys measured 49.3  24.4  22.8 mm, with a volume of 14.6 cm 3 and the artery and vein measured 21.0 mm and 28.4 mm, respectively. The right kidney was always cranial and predominantly positioned ventrally to vertebrae L1-L3, while the left one was positioned ventrally to vertebrae L2-L4. There was no difference in the comparison between sexes or antimeres. Most renal dimensions were significantly higher in the specimens from the Pampa biome, possibly due to the body size and type of diet. This result warns of interpreting diagnoses that depend on the evaluation of the normal renal dimensions in this species.

show abstract

Distribuições de Tendências Sazonais de Temperatura Média e Precipitação nos Biomas Brasileiros

Cited by 23 publications

References 18 publications

Impact of Drought and Flooding on Alkaloid Production in Annona crassiflora Mart

Impact of Drought and Flooding on Alkaloid Production in Annona crassiflora Mart

Pluviometric patterns in the São Francisco River basin in Minas Gerais, Brazil

Dimensions and skeletopy of kidneys in two populations of Cerdocyon thous (Linnaeus, 1766)

Contact Info

Product

Resources

About