Article
Plant Sciences
Gustavo Hiroaki Shimizu, Deise Josely Pereira Goncalves
Summary: A new species of Vochysia sobralii, endemic to Serra do Cachimbo in Para, Brazil, is described and illustrated in this study. The newly described species belongs to Vochysia section Pachyantha, which includes species with tomentose ovary and without petals. Additionally, two updated identification keys for V. sect. Pachyantha, including all ten species, are provided.
Article
Plant Sciences
Carlos Martel, Thomas B. Croat
Summary: We describe a new species of Anthurium (Anthurium huaytae) from central Peru, which is also the first record for subsect. Rupicola in Peru. Anthurium huaytae resembles A. amnicola but differs in its habitat, spathe color, cataphyll persistence, and flower shape.
Article
Microbiology
Guo-Jie Li, Tie-Zhi Liu, Shou-Mian Li, Shi-Yi Zhao, Cai-Yun Niu, Zhen-Zhen Liu, Xue-Jiao Xie, Xu Zhang, Lu-Yao Shi, Yao-Bin Guo, Ke Wang, Bin Cao, Rui-Lin Zhao, Ming Li, Chun-Ying Deng, Tie-Zheng Wei
Summary: Four new species, R. begonia, R. photinia, R. rhodochroa, and R. rufa, from northern and southwestern China under coniferous and deciduous trees are proposed. The illustrations and descriptions of R. gracillima, R. leucomarginata, R. roseola, and the above four new species are provided based on morphological characters and phylogenetic analyses. The relationships between these new species and related taxa are discussed.
Article
Zoology
Gianpiero Fiorentino, Maria C. Tocora, Sebastian Ramirez
Summary: This article confirms the presence of the genus Metopiellus in Colombia with the description of the new species Metopiellus guanano from the northern Amazon. It provides major diagnostic characters, distributional map, ecological data, and updates a previous taxonomic key for Metopiellus.
Article
Plant Sciences
Isau Huamantupa-Chuquimaco
Summary: Vochysia pongo-qonecensis is a plant species found in the pre-montane forests of the Andean-Amazonian piedmont in southern Peru. It belongs to the Vochysia genus and shares some morphological similarities with V. citrifolia and V. parviflora.
Article
Environmental Sciences
Marks Melo Moura, Luiz Eduardo Soares de Oliveira, Carlos Roberto Sanquetta, Alexis Bastos, Midhun Mohan, Ana Paula Dalla Corte
Summary: The study aimed to evaluate the use of high-resolution UAV images for identifying forest species in areas of forest regeneration in the Amazon. By training convolutional neural networks with different thresholds, the results showed that CNN can accurately identify species with over 90% accuracy. The study concluded that CNN is an effective tool for classifying species in UAV images.
Article
Multidisciplinary Sciences
Cathrin Manz, Slavomir Adamcik, Brian P. Looney, Adriana Corrales, Clark Ovrebo, Katarina Adamcikova, Tina A. Hofmann, Felix Hampe, Meike Piepenbring
Summary: This study contributes to the knowledge of the diversity of Russula species in subsection Roseinae based on specimens collected in tropical montane rainforests in western Panama. Four new species were described and illustrated, showing closer relation to North American or Asian species. Two of the species were associated with Oreomunnea mexicana, while the other two were associated with Quercus species, all only known from mountains in western Panama.
Article
Environmental Sciences
Ana Caroline Miron, Talita Godinho Bezerra, Rodrigo Geroni Mendes Nascimento, Fabiano Emmert, Reginaldo Sergio Pereira, Niro Higuchi
Summary: The study evaluated the spatial distribution patterns of six tree species and analyzed the relationship between topography and population densities and stem size. Results showed that different species exhibit variations in density and tree size based on topography-related variables, indicating species may be spatially sensitive to habitat variability in the study area. The findings suggest that spatial distribution should be considered for logging planning decisions and that topographic variations have implications for timber yield variations in the area.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biochemistry & Molecular Biology
Kimberly Lozano-Garzon, Luisa L. Orduz-Diaz, Camilo Guerrero-Perilla, Willian Quintero-Mendoza, Marcela P. Carrillo, Juliana E. C. Cardona-Jaramillo
Summary: This study conducted a comprehensive analysis of several traditionally used plants in the Colombian Amazon region and found that Miriti oil is the most commercially promising ingredient. The region is a promising source of high-quality raw materials for pharmaceutical, food, and cosmetic purposes.
Article
Plant Sciences
Oscar Mauricio Lopez-floriano, Thomas B. Croat, Marco A. Correa-Munera
Summary: This paper describes and illustrates a new species of Anthurium sect. Leptanthurium, comparing it with another species endemic to the Colombian Amazonia, A. miritiparanaense, and A. raphaelense from Ecuador.
Article
Ecology
Rodrigo de Souza Barbosa, Gizelia Ferreira Matos Pereira, Sabrina Santos Ribeiro, Andre Luiz Ferreria Hage, Gracialda Ferreira Costa, Rafael Paiva Saloma, Gustavo Schwartz
Summary: Based on forest inventory data from bauxite mining areas in the Eastern Amazon, this study identified 17 key species with high representative value for forest restoration. These key species are distributed among late secondary, climax, initial secondary, and pioneer ecological groups. Ecological knowledge of these selected species is crucial for planning and implementing effective forest restoration projects.
ECOLOGICAL ENGINEERING
(2021)
Article
Forestry
Diego Oliveira Brandao, Lauro Euclides Soares Barata, Carlos Afonso Nobre
Summary: This article reviews the impact of human-induced environmental changes on forest products and forest-dependent communities in the Amazon region. The study finds that populations of species associated with forest products are decreasing due to deforestation and selective logging, leading to changes in species composition and loss of valuable species. Over 1 billion native trees and palms are being lost every two years, resulting in economic losses estimated between US$1-17 billion. This loss of native plant species has long-lasting effects on the economic opportunities of forest-dependent communities. However, investments in science and technology offer potential solutions for recovering deforested and degraded lands and engaging companies that use forest products.
Article
Ecology
Michael A. A. Gerschwitz-Eidt, Markus S. S. Dillenberger, Joachim W. W. Kadereit
Summary: Saxifraga section Saxifraga subsection Arachnoideae is a lineage of 12 species distributed mainly in the European Alps. It is unusual in terms of ecological diversification by containing both high elevation species from exposed alpine habitats and low elevation species from shady habitats such as overhanging rocks and cave entrances. Using a DNA-sequencing approach, the study reconstructed and dated the phylogeny of subsection Arachnoideae and found that diversification started in the late Pliocene. The study hypothesizes that low light requirements evolved when species persisting in cold-stage refugia were forced into marginal habitats by more competitive warm-stage vegetation.
ECOLOGY AND EVOLUTION
(2023)
Article
Environmental Sciences
Oscar V. Bautista-Cespedes, Louise Willemen, Augusto Castro-Nunez, Thomas A. Groen
Summary: The Amazon rainforest in Colombia covers 40% of the territory and has been shaped by internal war. Conflict variables show positive relationships with deforestation but are not among the main variables explaining it.
REGIONAL ENVIRONMENTAL CHANGE
(2021)
Article
Multidisciplinary Sciences
Faver Alvarez, Fernando Casanoves, Juan Carlos Suarez
Summary: This study assessed the influence of dispersed trees in pastures on soil properties in grazing areas for dual-purpose cattle systems in the Piedmont region of the Colombian Amazon. Significant interactions were found between tree species and location for soil properties, with each tree species showing unique effects on soil characteristics in different locations.
