Xenarthrans—anteaters, sloths, and armadillos—have essential functions for ecosystem maintenance, such as insect control and nutrient cycling, playing key roles as ecosystem engineers. Because of habitat loss and fragmentation, hunting pressure, and conflicts with domestic dogs, these species have been threatened locally, regionally, or even across their full distribution ranges. The Neotropics harbor 21 species of armadillos, 10 anteaters, and 6 sloths. Our data set includes the families Chlamyphoridae (13), Dasypodidae (7), Myrmecophagidae (3), Bradypodidae (4), and Megalonychidae (2). We have no occurrence data on Dasypus pilosus (Dasypodidae). Regarding Cyclopedidae, until recently, only one species was recognized, but new genetic studies have revealed that the group is represented by seven species. In this data paper, we compiled a total of 42,528 records of 31 species, represented by occurrence and quantitative data, totaling 24,847 unique georeferenced records. The geographic range is from the southern United States, Mexico, and Caribbean countries at the northern portion of the Neotropics, to the austral distribution in Argentina, Paraguay, Chile, and Uruguay. Regarding anteaters, Myrmecophaga tridactyla has the most records (n = 5,941), and Cyclopes sp. have the fewest (n = 240). The armadillo species with the most data is Dasypus novemcinctus (n = 11,588), and the fewest data are recorded for Calyptophractus retusus (n = 33). With regard to sloth species, Bradypus variegatus has the most records (n = 962), and Bradypus pygmaeus has the fewest (n = 12). Our main objective with Neotropical Xenarthrans is to make occurrence and quantitative data available to facilitate more ecological research, particularly if we integrate the xenarthran data with other data sets of Neotropical Series that will become available very soon (i.e., Neotropical Carnivores, Neotropical Invasive Mammals, and Neotropical Hunters and Dogs). Therefore, studies on trophic cascades, hunting pressure, habitat loss, fragmentation effects, species invasion, and climate change effects will be possible with the Neotropical Xenarthrans data set. Please cite this data paper when using its data in publications. We also request that researchers and teachers inform us of how they are using these data.
Resumo -O objetivo deste trabalho foi determinar a densidade de estocagem mais adequada na fase de recria de matrinxã (Brycon amazonicus) em tanque-rede. Os peixes foram distribuídos em 12 tanques-rede de 1 m 3 , nas densidades de 200, 300, 400 e 500 peixes m -3 , sendo alimentados com ração comercial contendo 34% de proteína bruta durante 60 dias. Foram analisados parâmetros de crescimento e produtividade. Não houve diferença no peso e comprimento. A produção por área foi significativamente maior na densidade de 500 peixes m -3, considerada, portanto, a mais adequada para recria em tanque-rede.Termos para indexação: piscicultura, produção, densidade de estocagem. Stocking density of matrinxã (Brycon amazonicus) during second growth phase in cagesAbstract -The objective of this work was to determine the adequate stocking density to second growth phase of matrinxã (Brycon amazonicus) in cage. Fish has been stocked in 12 cages with 1 m 3 each in four different densities 200, 300, 400 and 500 fish m . Fish were fed on commercial diets with 34% of crude protein during 60 days. Growth and productivity parameters were evaluated. There were no differences in weight and length. The production per area was significantly higher in the density of 500 fish m -3 , considered then the most adequate to the second growth phase in cage.
ResumoO presente trabalho teve como objetivo analisar as melhores práticas de aplicação e desenvolvimento de inovações, visando o desempenho e a durabilidade dos pavimentos. O elemento principal do trabalho é o uso do asfalto-borracha, como matéria prima na pavimentação das estradas. No decorrer do trabalho buscou perceber a viabilidade e por qual razão a prática é pouco aplicada. A opção pelo uso do asfalto borracha é uma aposta num material mais resistente que exija menos intervenções para manutenção. Apesar do asfalto-borracha ser mais caro que o convencional, é ecologicamente correto, pois, colabora com a diminuição de resíduos ambientais. O investimento inicial embora seja mais alto, é perceptível a vantagem dessa aplicação, uma delas é o conforto e durabilidade do pavimento. Palavras-chave:Pavimentação. Asfalto-borracha. Custo beneficio.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.