GESTÃO TERRITORIAL DAS ÁGUAS NA AMAZÔNIA: degradação da bacia do Igarapé Altamira – Altamira (PA) e as transformações pós Belo Monte

TERRITORIAL MANAGEMENT OF WATER IN THE AMAZON: degradation of the Igarapé Altamira Basin – Altamira (PA) and the transformations after Belo MonteGESTIÓN TERRITORIAL DE LAS AGUAS EN LA AMAZONIA: degradación de la bacia del Igarapé Altamira – Altamira (PA) y las transformaciones postales Belo MonteRESUMOEste artigo fornece uma análise das mudanças do uso e cobertura do solo na sub-bacia (SBH) do Igarapé Altamira, dentro da Bacia Hidrográfica do Xingu, correlacionando com algumas políticas de ordenamento territorial provenientes do Estado Brasileiro, em especial, a construção da Rodovia Transamazônica (BR-230) e da UHE Belo Monte. A análise do uso e da cobertura do solo foi realizada por meio de dados do projeto TerraClass. Os resultados obtidos apontam que a SBH do Igarapé Altamira está dentro de uma zona consolidada pelo uso agropecuário, sendo a abertura da Rodovia Transamazônica o principal vetor de transformação destas paisagens.Palavras-chave: Gestão Ambiental; Gestão Territorial; Bacias Hidrográficas; UHE Belo Monte. ABSTRACTThis article provides an analysis of changes in land use and land cover in the sub-basin (SBH) of Igarapé Altamira, within the Xingu Hydrographic Basin, correlating with some territorial planning policies from the Brazilian State, in particular, the construction of the Highway Transamazônica (BR-230) and the Belo Monte HPP. The analysis of land use and cover was carried out using data from the TerraClass project. The results obtained indicate that the SBH of Igarapé Altamira is within a zone consolidated by agricultural use, with the opening of the Transamazon Highway being the main vector of transformation of these landscapes.use, which has undergone many changes in recent years. Using data from the TerraClass project to analyze inappropriate land use and resulting in the use of the spring for agriculture and livestock.Keywords: Environmental Management; Territorial Management; Watersheds; UHE Belo MonteRESUMENEste artículo presenta un análisis de los cambios en el uso y cobertura del suelo en la subcuenca (SBH) de Igarapé Altamira, dentro de la Cuenca Hidrográfica del Xingu, correlacionados con algunas políticas de ordenamiento territorial del Estado brasileño, en particular, la construcción de la Carretera. Transamazônica (BR-230) y la UHE de Belo Monte. El análisis de uso y cobertura del suelo se realizó a partir de datos del proyecto TerraClass. Los resultados obtenidos indican que el SBH de Igarapé Altamira se encuentra dentro de una zona consolidada por uso agrícola, siendo la apertura de la Carretera Transamazónica el principal vector de transformación de estos paisajes.Palabras clave: Gestión Ambiental; Gestión Territorial; Cuencas Hidrográficas; UHE Belo Monte

Use of crushing residue as nutrients source in the cocoa seedlings development in Medicilândia – PA

The use of milled rocks has been postulated as an efficient way to provide nutrients to the plants. The objective of this work was to evaluate the cocoa seedlings agronomic performance in different Diabase Penatecaua powder treatments. The study comprehends the following phases: i) involved waste characterization, ii) treatments definition and sampling; iii) monitoring and evaluation; iv) systematization and results discussion. The experiment was realized with cocoa seedlings germinated in commercial organic substrate in the period from July to September 2019. The used rock dust was extracted at Km 85, Transamazônica highway, Medicilândia municipality – Pa. The extraction area lithology is formed by igneous rocks of Diabase Penatecaua. The experimental delineation was entirely randomized, with four repetitions per treatment, being them respectively in the dosages 0, 25, 50 and 75 (g / plant), being 16 plants per block, totaling 64 plants, and their irrigation done manually in the first hours of the day. Therefore, the results showed that the dosages were absorbed by the cocoa seedlings according to the plant\u27s need allied to pH balance, which was caused by good nutritional cycling with the organic matter high rate present in the commercial substrate when in contact with the Diabase Penatecaua powder worked granulometry. However, the experiment time wasn’t enough to obtain statistically a significant difference. Thus, it is necessary that new studies be done aiming the temporal deepening of the studied doses for the culture

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio

Pervasive gaps in Amazonian ecological research

Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost

A influência da bacia hidrográfica no clima urbano da Amazônia: análise do clima na bacia do Igarapé Ambé no perímetro urbano de Altamira - PA, no período de implantação da UHE Belo Monte, 2011 à 2015.

O presente trabalho tem como objetivo analisar a temperatura (°C) da superfície do perímetro urbano de Altamira - Pará e suas relação com a bacia do igarapé Ambé, neste o uso de geotecnologias, especialmente o sensoriamento remoto, na região do infravermelho termal dos sensores Landsat-5/TM e Landsat-8/OLI permitiu a espacialização da temperatura, bem como, sua relação com nova dinâmica espacial oriunda dos processos de implementação da Usina da Hidrelétrica de Belo Monte (UHEBM) no Rio Xingu.

Neotropical freshwater fisheries : A dataset of occurrence and abundance of freshwater fishes in the Neotropics

The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for freshwater fishes. Our NEOTROPICAL FRESHWATER FISHES data set is the first to produce a large-scale Neotropical freshwater fish inventory, covering the entire Neotropical region from Mexico and the Caribbean in the north to the southern limits in Argentina, Paraguay, Chile, and Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, for the 4225 species, represented by occurrence and abundance data. The number of species for the most numerous orders are as follows: Characiformes (1289), Siluriformes (1384), Cichliformes (354), Cyprinodontiformes (245), and Gymnotiformes (135). The most recorded species was the characid Astyanax fasciatus (4696 records). We registered 116,802 distribution records for native species, compared to 1802 distribution records for nonnative species. The main aim of the NEOTROPICAL FRESHWATER FISHES data set was to make these occurrence and abundance data accessible for international researchers to develop ecological and macroecological studies, from local to regional scales, with focal fish species, families, or orders. We anticipate that the NEOTROPICAL FRESHWATER FISHES data set will be valuable for studies on a wide range of ecological processes, such as trophic cascades, fishery pressure, the effects of habitat loss and fragmentation, and the impacts of species invasion and climate change. There are no copyright restrictions on the data, and please cite this data paper when using the data in publications

Characterisation of microbial attack on archaeological bone

As part of an EU funded project to investigate the factors influencing bone preservation in the archaeological record, more than 250 bones from 41 archaeological sites in five countries spanning four climatic regions were studied for diagenetic alteration. Sites were selected to cover a range of environmental conditions and archaeological contexts. Microscopic and physical (mercury intrusion porosimetry) analyses of these bones revealed that the majority (68%) had suffered microbial attack. Furthermore, significant differences were found between animal and human bone in both the state of preservation and the type of microbial attack present. These differences in preservation might result from differences in early taphonomy of the bones. © 2003 Elsevier Science Ltd. All rights reserved