Article
Biodiversity Conservation
Jose Tasso Felix Guimaraes, Luciano Costa, Daniela Cristina Zappi, Wilson Filgueira Batista Junior, Karen da Silva Lopes, Ronnie Cley de Oliveira Alves, Luiza de Araujo Romeiro, Edilson Freitas da Silva, Lea Maria Medeiros Carreira, Tarcisio Magevski Rodrigues, Tereza Cristina Giannini, Vera Lucia Imperatriz-Fonseca, Ortrud Monika Barth
Summary: The honey pollen samples from Melipona seminigra pernigra Moure & Kerr 1950 collected between 2017 and 2019 aimed to evaluate the seasonal floral availability in undisturbed and mining-influenced areas. The study identified around one hundred pollen types mainly belonging to Fabaceae, Myrtaceae, and Euphorbiaceae, with the mining area showing higher richness. The primary bee sources were widespread and not significantly different between the two areas, indicating the potential for using native plants in mined area revegetation.
Article
Green & Sustainable Science & Technology
Cristina Bellini, Francesco Ciani, Lia Pignotti, Riccardo Maria Baldini, Tiziana Gonnelli, Marta Mariotti Lippi
Summary: This study investigates the flora and vegetation of the river estuaries in Southern Oman, focusing on the plants growing on different substrates. The analysis of surface soil samples provides insights into the pollen diffusion and representation of these plants in the current pollen rain. The pollen records offer a general picture of the flora and vegetation in the area and are important for the interpretation of pollen records from ancient soils.
Article
Multidisciplinary Sciences
Lumila Paula Menendez, Maria Clara Lopez-Sosa, Sergio Francisco Serafim Monteiro da Silva, Gabriela Martin, Anne-Marie Pessis, Niede Guidon, Ana Solari
Summary: The biological variation of the earliest skeletons in South America has been a subject of intense debate. This study presents the first radiocarbon-date for an early Holocene human skeleton from Brazil and analyzes the craniometric data to discuss the evolutionary processes involved in the occupation of the continent. The findings suggest that the early individuals were part of the same lineage with moderate morphological variation and possibly different from the late Holocene populations.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Alejandro Baladron, Maria Dolores Bejarano, Judith M. Sarneel, Isabel Boavida
Summary: This study investigated the impact of hydropeaking on common plant species in riparian areas. The results showed that half of the species performed worse under hydropeaking conditions, but no specific hydropeaking scenario was more disruptive than others. Some species, such as Betula pubescens, Alnus incana, and Filipendula ulmifolia, were more vulnerable to hydropeaking, while others, like Carex acuta, were resistant. The plants exposed to perturbed scenarios accumulated more C-13, indicating physiological stress.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jianhua Wang, Yan Gong, Xiaoyan Yan, Rong Han, Huize Chen
Summary: This study investigated the effects of CdTe-QDs on the reproductive growth of Arabidopsis plants by simulating air and soil pollution. The results showed that high concentrations of CdTe-QDs inhibited fruit formation and reduced seed quantity. CdTe-QDs were found to be transported mainly through the vascular bundle and accumulates in the anthers and ovaries. Furthermore, CdTe-QDs caused abnormal pollen morphology, defects in pollen vitality, and inhibited pollen tube growth through oxidative damage, leading to the impairment of fertilization process and reproductive growth in Arabidopsis.
Article
Plant Sciences
Sergio L. Cavalheiro-Filho, Lisia M. S. Gestinari, Tatiana U. P. Konno, Mirella P. Santos, Emiliano N. Calderon, Mariana C. H. Marques, Fernando M. G. Dos Santos, Alexandre Castilho, Rodrigo L. Martins, Francisco A. Esteves, Naiara Campos
Summary: Study found differences in morphological traits between Isoetes cangae and Isoetes serracarajensis, including characters such as megasporangium color and megaspore ornamentation. The discovery of stomata in I. serracarajensis is related to its amphibious habit. Furthermore, some characters used in species descriptions were found to be variable, indicating the influence of seasonality and habitat characteristics on the morphological diversity of these lycophytes.
AMERICAN FERN JOURNAL
(2021)
Article
Plant Sciences
Bushan Kumar, Kanwaljeet Singh, Pankaj Kumar, Zohra Batool, Shakti K. Dhiman, Sumeet Gairola
Summary: The study investigated the palynological diversity of Rare, Endangered, and Threatened (RET) plant species in the Western Himalayas, India, finding that pollen morphology can aid in species delimitation and evolutionary patterns of pollen aperture and exine ornamentation were observed in different plant orders.
NOTULAE BOTANICAE HORTI AGROBOTANICI CLUJ-NAPOCA
(2022)
Article
Multidisciplinary Sciences
Valentin Cabon, Miriam Bui, Henning Kuhne, Birgit Seitz, Ingo Kowarik, Moritz von der Lippe, Sascha Buchholz
Summary: Wild boar populations are increasing in European cities, but the impact of their soil disturbance on urban grassland biodiversity depends on the context and species.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Civil
Oral Yagci, Kyle Strom
Summary: Instream plants have been found to have a significant impact on water flow and suspended sediment transport in rivers, resulting in non-uniform flow conditions. Vegetated patches create backwater conditions in the upstream, leading to increased deposition of suspended sediment.
JOURNAL OF HYDROLOGY
(2022)
Article
Plant Sciences
Caixia Wei, Phillip E. Jardine, William D. Gosling, Carina Hoorn
Summary: The size of Poaceae pollen cannot be used as a proxy to reconstruct past vegetation and climate in the Amazon area. The size of Poaceae pollen varies greatly and is not influenced by other factors.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2023)
Article
Multidisciplinary Sciences
Lucy Nevard, Avery L. Russell, Karl Foord, Mario Vallejo-Marin
Summary: In buzz-pollinated plants, bees use thoracic vibrations to release pollen from flowers, with the morphology of the flower affecting vibration transmission and ultimately influencing pollen release and bee behavior.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Claudio Varotto, Massimo Pindo, Elena Bertoni, Christian Casarotto, Federica Camin, Matteo Girardi, Valter Maggi, Antonella Cristofori
Summary: This study tested for the first time the potential of High Throughput Sequencing (HTS) to estimate plant biodiversity archived in the surface layers of a temperate alpine glacier, with results highlighting the presence of pollen and plant remains in the distinct layers of snow, firn, and ice. DNA metabarcoding described distinct plant species composition among different samples, providing broad taxonomic representation of the biodiversity of the catchment area.
SCIENTIFIC REPORTS
(2021)
Article
Plant Sciences
Manuel Vieira, Johannes M. Bouchal, Christian Geier, Silvia Ulrich, Reinhard Zetter, Friogeir Grimsson
Summary: The article presents the discovery of five different pollen morphologies assigned to the endemic palm genus Sclerosperma from the earliest Late Eocene of southeast Kenya. These fossil pollen grains represent the earliest records of Sclerosperma so far and provide insights into its palaeophytogeographic history. The study also highlights the conservative distribution and ecological tolerance of Sclerosperma, making it a reliable taxon for palaeoclimate estimations and assignment of palaeofloras to major vegetation biomes.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2023)
Article
Plant Sciences
Jurene E. Kemp, Mario Vallejo-Marin
Summary: The study showed that changes in anther morphology in Solanum plants are associated with variations in pollen dispensing schedules, with small-flowered taxa releasing pollen at higher rates and faster vibration velocities resulting in more pollen released. These results suggest that floral characteristics and bee vibration properties play a role in the pollen dispensing properties of poricidal anthers, providing a mechanism to adapt to different pollination environments.
AMERICAN JOURNAL OF BOTANY
(2021)
Article
Plant Sciences
Mark Paul Selda Rivarez, Chantal Faure, Laurence Svanella-Dumas, Anja Pecman, Magda Tusek-Znidaric, Deborah Schonegger, Kris De Jonghe, Arnaud Blouin, David A. Rasmussen, Sebastien Massart, Maja Ravnikar, Denis Kutnjak, Armelle Marais, Thierry Candresse
Summary: High-throughput sequencing and sequence mining tools have had a revolutionary impact on virus detection and discovery in recent years. This study combines modern and classical virological tools to characterize Solanum nigrum ilarvirus 1 (SnIV1) and identifies it from diverse plant and non-plant sources globally. The study also demonstrates the systemic infection and transmissibility of SnIV1 in solanaceous species. Overall, the study provides valuable information about the diversity, global presence, and pathobiology of SnIV1.
Article
Geosciences, Multidisciplinary
Jose Tasso Felix Guimaraes, Prafulla Kumar Sahoo, Paulo Rogenes Monteiro Pontes, Gabriel Negreiros Salomao, Francisco Ribeiro da Costa, Adayana Maria Queiroz de Melo, Marcio Sousa da Silva, Renato Oliveira da Silva Junior
Summary: This study aimed to understand the landscape evolution and floodplain formation in a Precambrian Shield area of southeastern Amazonia. It revealed the sources of sediments, deposition processes, and watershed evolution, providing insights into the environmental changes and geochemical background studies of the floodplain deposits.
Article
Geography, Physical
Luiza Santos Reis, Ioanna Bouloubassi, Mercedes Mendez-Millan, Jose Tasso Felix Guimaraes, Luiza de Araujo Romeiro, Prafulla Kumar Sahoo, Luiz Carlos Ruiz Pessenda
Summary: Stable isotope analysis of plant waxes and detailed pollen data provide insights into vegetation and precipitation variability in Serra Sul de Carajas, southeastern Amazonia over the past 25,000 years. The findings suggest drier conditions during the Last Glacial Maximum and a transition to wetter conditions in the Holocene, with vegetation dominated by C-3 plants. The study reveals the prominence of C-3 savanna during the glacial period and the expansion of tropical forests in response to increased humidity and warmth in the Holocene. The pollen data indicate a shift towards more open landscapes during the mid-Holocene. However, the moisture variability recorded by delta D-wax does not always align with the vegetation data, particularly during the mid-Holocene. The study emphasizes the complexity of Holocene moisture patterns and highlights the need for more multi-proxy reconstructions in Southeast Amazonia.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Prafulla Kumar Sahoo, Roberto Dall'Agnol, Simonny do C. Simoes Rolo de Deus, Gabriel Negreiros Saloma, Jose Tasso Felix Guimaraes, Romulo Simoes Angelica, Silvio Junio Ramos, Marlene Furtado da Costa, Jose Oswaldo de Siqueira
Summary: This study conducted a comprehensive investigation on the level of total Hg (THg) in different environmental media in Itacaiunas River Watershed (IRW), Brazil, aiming to understand the source and distribution of Hg and its potential risks to ecological and human health. The results showed that most of the soils and sediments had higher Hg content compared to the average values, but only a few samples exceeded the legal limits. The water samples were not significantly contaminated by Hg. The distribution of Hg in soils and sediments was closely related to geological factors, indicating limited anthropogenic influence. The main factor controlling the distribution of Hg was organic matter. The ecological and health risk assessments revealed low pollution and non-carcinogenic health risks. This study provides important information for Hg risk assessment and future research in the Amazonia region.
ENVIRONMENTAL RESEARCH
(2023)
Article
Ecology
Luiza de Araujo Romeiro, Rafael Cabral Borges, Edilson Freitas da Silva, Jose Tasso Felix Guimaraes, Tereza Cristina Giannini
Summary: This study uses pollen loads from bee specimens to infer interactions between bees and plants in the Carajas National Forest and its surroundings. It also aims to determine the trophic niches of bee species and identify priority plant species for restoring interaction networks in deforested areas.
ARTHROPOD-PLANT INTERACTIONS
(2023)
Article
Geosciences, Multidisciplinary
Jose Tasso Felix Guimaraes, Edilson Freitas da Silva, Keyvilla da Costa Aguiar, Karen da Silva Lopes, Mariana Maha Jana Costa de Figueiredo, Luiza Santos Reis, Tarcisio Magevski Rodrigues, Tereza Cristina Giannini, Cecilio Frois Caldeira
Summary: Isoetes communities in South America have high diversity, with two recently discovered species (I. serracarajensis and I. cangae) in the Carajás Mountain Range in southeastern Amazonia. Population dynamics and conservation status of these species were studied by identifying and quantifying their megaspores in sediment cores of upland lakes. The results show that drier climate conditions lead to the dehydration of swamps and ponds, restricting I. serracarajensis to eutrophicated lakes. On the other hand, the sensitive population of I. cangae declined due to eutrophication. Future climate and hydrological stress may further threaten the habitats and endangered populations of Isoetes.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2023)
Review
Environmental Sciences
Jose Tasso Felix Guimaraes, Prafulla Kumar Sahoo, Pedro Walfir Martins Souza-Filho, Marcio Sousa da Silva, Tarcisio Magevski Rodrigues, Edilson Freitas da Silva, Luiza Santos Reis, Mariana Maha Jana Costa de Figueiredo, Karen da Silva Lopes, Aline Mamede Moraes, Alessandro Saba Leite, Renato Oliveira da Silva Junior, Gabriel Negreiros Salomao, Roberto Dall'Agnol
Summary: The upland lakes in Carajas, southeastern Amazonia, were extensively studied and multiple datasets were generated to explain their formation and evolution. The evolution of these lakes occurred during the Pliocene-Pleistocene periods through subsidence of the lateritic crust promoted by fault reactivation. The multielement geochemical signature of the sediments indicates that they were derived from weathered canga and ferruginous soils, and the organic matter came from both autochthonous and allochthonous sources.
Article
Environmental Sciences
Gabriel Negreiros Salomao, Roberto Dall'Agnol, Prafulla Kumar Sahoo, Gabriel Soares de Almeida, Rafael Tarantino Amarante, Leiliane Bozzi Zeferino, Joao Paulo Nobre Lopes, Pedro Walfir Martins Souza Filho, Normara Yane Mar da Costa, Jose Tasso Felix Guimaraes, Marcio Sousa da Silva, Gabriel Caixeta Martins, Mayara Fraeda Barbosa Teixeira, Eduardo Duarte Marques, Romulo Simoes Angelica, Wilker Emmanoel Oliveira Araujo
Summary: The expansion of human occupation and economic activity, as well as deforestation, is negatively impacting the Amazon ecosystem, especially in the Itacaiunas River Watershed. Artisanal mining (ASM) has caused anthropogenic impacts on the surface water quality and hydrogeochemical characteristics of the region. The study provides evidence of pollution and deterioration of water quality due to ASM.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Studies
Danieli Mara Ferreira, Paulo Rogenes Monteiro Pontes, Roberto Dall'Agnol, Tasso Guimaraes, Gabriel Salomao, Marcio Sousa Silva
Summary: This study models the transport and fate of 19 metals in the Parauapebas river in Brazil, evaluating the risks associated with threshold exceedances. The results indicate iron, manganese, and aluminum as the main substances of concern for surface water quality. Point sources have a larger impact on water quality during the dry season, while diffuse contributions have a larger impact during the rainy season, especially in deforested areas. The modeling framework can guide pollution control and remediation efforts for stakeholders in the public or industrial sectors.
ENVIRONMENTAL IMPACT ASSESSMENT REVIEW
(2023)
Article
Agriculture, Dairy & Animal Science
A. A. G. Silva, F. Silva, M. P. Maciel, F. Ferreira, L. L. S. Ferreira, P. H. A. Oliveira, M. E. O. Dornelas, K. D. S. Lopes
Summary: The study aimed to evaluate the impact of space allowance during pre-slaughter transport on the welfare, carcass traits, and meat quality of European breeding quail. The results showed that death on arrival increased as the space allowance decreased, and the maximum carcass weight and meat lightness value were observed when each transport crate contained 31 quails. Therefore, the number of quails transported in crates should not exceed 30 animals.
BRAZILIAN JOURNAL OF POULTRY SCIENCE
(2023)
Article
Agriculture, Dairy & Animal Science
A. A. G. Silva, F. Silva, M. P. Maciel, F. Ferreira, L. L. S. Oliveira, P. H. A. Oliveira, M. E. O. Dornelas, K. D. S. Lopes
Summary: The effects of sunflower kernel peptides produced by enzymatic digestion, fermentation, or both on broiler growth performance, nutrient digestibility, and health status were investigated. Results showed that the peptide groups significantly improved feed intake, body weight gain, and ileal apparent digestibility of nutrients and amino acids. Additionally, they enhanced the health status by increasing serum immunoglobulins and glutathione peroxidase. Dual-degradation by enzymolysis and fermentation, especially DSM, showed better improvement in the nutrition and application of sunflower kernel meal in broilers.
BRAZILIAN JOURNAL OF POULTRY SCIENCE
(2023)
Article
Multidisciplinary Sciences
Edilson F. Da Silva, Karen S. Lopes, Ronnie Alves, Lea Maria M. Carreira, Delmo F. Da Silva, Luiza A. Romeiro, Wilson F. Batista Jr, Tarcisio M. Rodrigues, Ricardo S. Secco, Jose Tasso F. Guimaraes
Summary: This study presents an integrated approach to refine paleoclimate and paleohydrological changes based on upland lake sediments in southeastern Amazonia. The results suggest a transition from lower temperatures and increased marshy conditions in the Early Pleistocene to higher temperatures and lower humidity in the Late and Middle Holocene. The pollen records indicate increased humidity in the Early Holocene.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2023)