Biobank of fungi from marine and terrestrial Antarctic environments
This study showed the relevance of the CRM-UNESP biobank, highlighting the importance of applying standard methods for the preservation of the biological material and associated data (BMaD), as recommended in national and international standards.PMID:38126380 | DOI:10.1590/0001-3765202320230603 (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Victor G Nardo Igor V R Otero Patricia Giovanella Juliana Aparecida Dos Santos Elisa P Pellizzer Daniel R Dovigo Eduardo C P Paes Lara D Sette Source Type: research

Glacier fluctuations and a proglacial evolution in King George Bay (King George Island), Antarctica, since 1980 decade
This study aims to investigate the glacier shrinkage and recent proglacial environment in King George Bay, Antarctica, since 1988 in response to climate change. Remote sensing data (SPOT, Sentinel, Landsat and Planet Scope images) were applied to glacial landforms and ice-marginal fluctuations mapping. Annual mean near-surface air temperature reanalysis solutions from ERA-Interim were analyzed. Moraines and glaciofluvial landforms were identified. The Ana Northern Glacier has the highest retreat value (3.64 km) (and area loss of 31%) in response to higher depth in frontal ice-margin and reveal ocean-glacier linkages. The A...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: K átia K DA Rosa Cleiva Perondi J úlia L Lorenz Jeffrey D Auger Pamela Cazaroto Carina Petsch Rafael G Siqueira Jefferson C Sim ões Rosemary Vieira Source Type: research

Large-scale and regional climatic influences on surface temperature and precipitation in the South Shetland Islands, northern Antarctic Peninsula
An Acad Bras Cienc. 2023 Dec 18;95(suppl 3):e20230685. doi: 10.1590/0001-3765202320230685. eCollection 2023.ABSTRACTUsing data from SCAR observations, ERA5 reanalysis, and regional climate model simulations (RACMO), we examined the influence of large- and regional-scale climate forcing on temperature and precipitation variations in the South Shetland Islands (SSI). Specifically, we focused on understanding how regional climate indices influence the temporal variability of temperature and precipitation on the SSI. Our findings indicate that both large- and regional-scale climate indices significantly impact the interannual ...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Christian Torres Deniz Bozkurt Jorge Arigony-Neto Source Type: research

The use of sentinel-2 imagery to generate vegetations maps for the Northern Antarctic peninsula and offshore islands
An Acad Bras Cienc. 2023 Dec 18;95(suppl 3):e20230710. doi: 10.1590/0001-3765202320230710. eCollection 2023.ABSTRACTWe used Sentinel-2 imagery time series to generate a vegetation map for the Northern part of the Antarctica Peninsula and offshore islands, including the South Shetlands. The vegetation cover was identified in the NDVI maximum value composite image. The NDVI values were associated with the occurrence of algae (0.15 - 0.20), lichens (0.20 - 0.50), and mosses (0.50 - 0.80). The vegetation cover distribution map was validated using the literature information. Generating a vegetation map distribution on an annual...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Eliana L DA Fonseca Edvan C Dos Santos Anderson R DE Figueiredo Jefferson C Sim ões Source Type: research

Ornithogenesis and soil-landscape interplays at northern Harmony Point, Nelson Island, Maritime Antarctica
An Acad Bras Cienc. 2023 Dec 18;95(suppl 3):e20230722. doi: 10.1590/0001-3765202320230722. eCollection 2023.ABSTRACTUnderstanding the influence of soil-forming factors and processes in ornithogenic soils is important to predict impacts of climate change on Antarctic ecosystems. Herein, we analyzed the soil-landscape interplays and development of ornithogenic soils at Harmony Point (HP), Nelson Island. We collected, described, and classified 24 soil profiles, combined with vegetation and landforms descriptions. Geoprocessing techniques were employed for mapping. Soil physical, chemical, geochemical, and mineralogical analys...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Iorrana F Sacramento Carlos Ernesto G R Schaefer Rafael G Siqueira Guilherme R Corr êa Jair Putzke Roberto F M Michel M árcio R Francelino Source Type: research

Spectral Linear Mixing Model application in passive microwave data to analyze Antarctic surface melting dynamics (1978-2018)
An Acad Bras Cienc. 2023 Dec 18;95(suppl 3):e20230732. doi: 10.1590/0001-3765202320230732. eCollection 2023.ABSTRACTSeveral studies have utilized passive microwave imagery for monitoring snowmelt in Antarctica. However, due to the low spatial resolution of these images (25 km), the quantification of snowmelt is not precise. To enhance the accuracy of these estimations, this study proposed a subpixel analysis approach based on a Spectral Linear Mixing Model. This approach was applied to images obtained from channels 18/19 GHz and 37 GHz, both horizontally and vertically polarized, acquired from the Scanning Multichannel Mic...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Claudio W Mendes J únior Jorge Arigony Neto Fernando L Hillebrand Marcos W D DE Freitas Juliana Costi Jefferson C Sim ões Source Type: research

Active surveillance for influenza virus and coronavirus infection in Antarctic birds and mammals in environmental fecal samples, South Shetland Islands
An Acad Bras Cienc. 2023 Dec 18;95(suppl 3):e20230741. doi: 10.1590/0001-3765202320230741. eCollection 2023.ABSTRACTNumerous Antarctic species are recognized as reservoirs for various pathogens, and their migratory behavior allows them to reach the Brazilian coast, potentially contributing to the emergence and circulation of new infectious diseases. To address the potential zoonotic risks, we conducted surveillance of influenza A virus (IAV) and coronaviruses (CoVs) in the Antarctic Peninsula, specifically focusing on different bird and mammal species in the region. During the summer of 2021/2022, as part of the Brazilian ...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Fernanda Gomes Tatiana Prado Wim Degrave Lucas Moreira Maith ê Magalhães Harrison Magdinier Roberto Vilela Marilda Siqueira Martha Brand ão Maria Ogrzewalska Source Type: research

Spatial and Scientometric study of the Brazilian scientific production on Antarctic soils and permafrost
This article carried out the first scientometric and spatial analysis of Brazilian scientific production on Antarctic soils and permafrost, based on all publications available from the Scopus and Web of Science databases. Information on co-authorship, citation, research topics, and sampling sites was used to understand the social and theoretical structure as well as the spatial dynamics of this research field in Brazil over the last 25 years. We highlight that Brazil is presently, the main country to study the soils and permafrost of Maritime Antarctica, in addition to having an international robust and prolific production...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Ícaro S Vieira F ábio S DE Oliveira Roberto F M Michel Source Type: research

Elemental and mineralogical characterization of marine sediments and their relationship to sedimentary and oceanographic processes in Central Bransfield Basin
An Acad Bras Cienc. 2023 Dec 18;95(suppl 3):e20230990. doi: 10.1590/0001-3765202320230990. eCollection 2023.ABSTRACTThis work consists of the sedimentological, mineralogical, and geochemical characterization of eight marine sediment cores collected in the Central Bransfield Basin, along a transect between the South Shetland Islands to the Antarctic Peninsula and its correlation to the sedimentary and oceanographic processes of the area. A chemical characterization based on X-ray fluorescence dispersive spectrometry was implemented to obtain geochemical data of the marine sediment while the minerals were identified by X-ray...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Janayna Cynthia M Galv ão Arthur Ayres Neto Rosemary Vieira Jefferson C Sim ões Source Type: research

Seasonality and assemblages of non-passeriform waterbirds in v árzea lakes on the lower Amazonas River, Santarém, Pará, Brazil
This study investigates the species richness and composition, and individual abundance of waterbird assemblages in 10 várzea lakes on the lower Amazon River across a seasonal cycle. A total of 7,970 birds belonging to 52 species were recorded. Of these, 25 species were present in all four phases of the cycle, 5 in three phases, 10 in two and 12 during just one phase. Families with the highest species richness were Ardeidae and Scolopacidae. In the dry season, we recorded the highest species richness and the highest total abundance values. Thirteen species showed variation in abundance across the seasonal cycle, most being...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Danilo Augusto Almeida-Santos Giulianne S Ferreira Edson V Lopes Source Type: research

Expansion of the area of occurrence of the genus Anochetus Mayr 1861 (Hymenoptera: Formicidae)
An Acad Bras Cienc. 2023 Dec 18;95(4):e20200605. doi: 10.1590/0001-3765202320200605. eCollection 2023.ABSTRACTThe study was carried out on an agroecological property located in Cologne São Manoel, 8th district of Pelotas, RS, Brazil. Anochetus neglectus Emery, 1894 was collected in an area of peach orchard that has been under an agroecological system for 18 years. This record expands the area of ​​occurrence and distribution of this rare species in the Neotropical Region.PMID:38126390 | DOI:10.1590/0001-3765202320200605 (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Juliana S Carvalho Ana C R DE Lima Junir A Lutinski Fl ávio R M Garcia Source Type: research

Abundance, distribution, and associated forage losses of pest grasshoppers (Orthoptera: Acrididae) in the Argentine Pampas
An Acad Bras Cienc. 2023 Dec 18;95(4):e20200773. doi: 10.1590/0001-3765202320200773. eCollection 2023.ABSTRACTThe goal of this study was to assess the status of Dichroplus elongatus and Borellia bruneri as actual agricultural pests in the Argentine Pampas by determining their abundance, distribution, and associated forage loss. The study was conducted in Laprida and Tandil, two counties in Buenos Aires province. In each county 20 sampling sites were established and monitored from 2012 to 2018. B. bruneri was more abundant and with a wider distribution in Laprida (91.4% of the sites) than in Tandil (42.1% of the sites) whil...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Yanina Mariottini Micaela Mancini Clara T Falasco Mar ía Laura DE Wysiecki Carlos Ernesto Lange Source Type: research

Are the tough times for Brazilian publications over?
An Acad Bras Cienc. 2023 Dec 18;95(4):e2023954. doi: 10.1590/0001-376520232023954.NO ABSTRACTPMID:38126392 | DOI:10.1590/0001-376520232023954 (Source: An Acad Bras Cienc)
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Alexander W A Kellner Source Type: research

Effect of wheat bran and whole wheat flour on manti quality
This study aimed to investigate the effects of wheat bran and whole wheat flour on the nutritional and cooking quality of manti. Samples were produced in an industrial plant and evaluated in terms of DF, phytic acid, in vitro glycemic index (GI), color and cooking quality (cooking loss, cooking time, weight increase). Although an increase was observed in phytic acid contents of manti produced from wheat bran or whole wheat flour, their DF contents increased without any adverse effect on cooking quality compared to control manti produced from refined flour. Besides, whole wheat flour resulted in a significant decrease in GI...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Eda Aktas-Akyildiz Source Type: research

Corticioid and poroid fungi from Brazilian Cerrado: a history of research and a checklist of species
An Acad Bras Cienc. 2023 Dec 15;95(suppl 2):e20220165. doi: 10.1590/0001-3765202320220165. eCollection 2023.ABSTRACTCorticioid and poroid fungi are widely known for wood decomposition which confers an important ecological role and biotechnological properties upon these species. Although being one of the most studied groups of fungi worldwide, data on diversity and geographic occurrence patterns in Brazil are insufficient, especially in poorly studied areas, including the Cerrado biome. Here we present an overview of the scientific literature concerning the corticioid and poroid fungi from Cerrado, along with a list of spec...
Source: An Acad Bras Cienc - December 21, 2023 Category: Science Authors: Lucas Leonardo-Silva Solange Xavier-Santos Source Type: research