Institution
Universidade Federal de Lavras
Education•Lavras, Brazil•
About: Universidade Federal de Lavras is a education organization based out in Lavras, Brazil. It is known for research contribution in the topics: Population & Species richness. The organization has 7895 authors who have published 11815 publications receiving 136268 citations.
Topics: Population, Species richness, Germination, Soil water, Biodiversity
Papers published on a yearly basis
Papers
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TL;DR: Sisvar gained acceptance by the scientific community because it provides reliable, accurate, precise, simple and robust results, and allows users a greater degree of interactivity.
Abstract: Sisvar is a statistical analysis system, first released in 1996 although its development began in 1994. The first version was done in the programming language Pascal and compiled with Borland Turbo Pascal 3. Sisvar was developed to achieve some specific goals. The first objective was to obtain software that could be used directly on the statistical experimental course of the Department of Exact Science at the Federal University of Lavras. The second objective was to initiate the development of a genuinely Brazilian free software program that met the demands and peculiarities of research conducted in the country. The third goal was to present statistical analysis software for the Brazilian scientific community that would allow research results to be analyzed efficiently and reliably. All of the initial goals were achieved. Sisvar gained acceptance by the scientific community because it provides reliable, accurate, precise, simple and robust results, and allows users a greater degree of interactivity.
4,840 citations
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TL;DR: In this article, the variations in floristic composition of both rain and semi-deciduous forests were analyzed in terms of geographic and climatic variables by performing multivariate analyses on 125 existing checklists.
Abstract: The tree flora of southeastern Brazilian Atlantic forests was investigated according to two main aspects: (a) the variations in floristic composition of both rain and semi-deciduous forests were analyzed in terms of geographic and climatic variables by performing multivariate analyses on 125 existing floristic checklists; and (b) the links of both rain and semi-deciduous forests to Amazonian forests and Cerrados (woody savanna) were assessed. All analyses were performed at the species, genus, and family levels. The information obtained for the 125 forest areas was organized into an environmental database containing geographic and climatic records, and a floristic database containing binary presence records for 2532 species, 520 genera, and 106 families. Canonical correspondence analyses (CCA) were utilized to assess the relationship between geographic and climatic variables, and tree flora composition. Venn diagrams and cluster analyses were used to assess the floristic links to Amazonian forests...
1,204 citations
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TL;DR: This paper aims to show some advantages of using Sisvar to perform such analysis to compare treatments means and to show greater power and better controls of experimentwise type I error rates under non-normal, asymmetric, platykurtic or leptokurtic distributions.
Abstract: Sisvar is a statistical analysis system with a large usage by the scientific community to produce statistical analyses and to produce scientific results and conclusions. The large use of the statistical procedures of Sisvar by the scientific community is due to it being accurate, precise, simple and robust. With many options of analysis, Sisvar has a not so largely used analysis that is the multiple comparison procedures using bootstrap approaches. This paper aims to review this subject and to show some advantages of using Sisvar to perform such analysis to compare treatments means. Tests like Dunnett, Tukey, Student-Newman-Keuls and Scott-Knott are performed alternatively by bootstrap methods and show greater power and better controls of experimentwise type I error rates under non-normal, asymmetric, platykurtic or leptokurtic distributions.
1,162 citations
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TL;DR: Prediction of the functional consequences of dung beetle decline demands functional studies conducted with naturally assembled beetle communities, which broaden the geographic scope of existing work, assess the spatio-temporal distribution of multiple functions, and link these ecosystem processes more clearly to ecosystem services.
881 citations
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Museu Paraense Emílio Goeldi1, Lancaster University2, Universidade Federal de Lavras3, Empresa Brasileira de Pesquisa Agropecuária4, Cornell University5, University of Canberra6, Arthur Rylah Institute for Environmental Research7, Escola Superior de Agricultura Luiz de Queiroz8, Federal University of Pará9, Universidade Federal de Viçosa10, National Institute for Space Research11, University of Exeter12, University of São Paulo13, Universidade Federal de Mato Grosso14, Stockholm Environment Institute15, International Institute of Minnesota16
TL;DR: In this article, the authors used a large data set of plants, birds and dung beetles (1,538, 460 and 156 species, respectively) sampled in 36 catchments in the Brazilian state of Para.
Abstract: Concerted political attention has focused on reducing deforestation, and this remains the cornerstone of most biodiversity conservation strategies. However, maintaining forest cover may not reduce anthropogenic forest disturbances, which are rarely considered in conservation programmes. These disturbances occur both within forests, including selective logging and wildfires, and at the landscape level, through edge, area and isolation effects. Until now, the combined effect of anthropogenic disturbance on the conservation value of remnant primary forests has remained unknown, making it impossible to assess the relative importance of forest disturbance and forest loss. Here we address these knowledge gaps using a large data set of plants, birds and dung beetles (1,538, 460 and 156 species, respectively) sampled in 36 catchments in the Brazilian state of Para. Catchments retaining more than 69–80% forest cover lost more conservation value from disturbance than from forest loss. For example, a 20% loss of primary forest, the maximum level of deforestation allowed on Amazonian properties under Brazil’s Forest Code, resulted in a 39–54% loss of conservation value: 96–171% more than expected without considering disturbance effects. We extrapolated the disturbance-mediated loss of conservation value throughout Para, which covers 25% of the Brazilian Amazon. Although disturbed forests retained considerable conservation value compared with deforested areas, the toll of disturbance outside Para’s strictly protected areas is equivalent to the loss of 92,000–139,000 km2 of primary forest. Even this lowest estimate is greater than the area deforested across the entire Brazilian Amazon between 2006 and 2015 (ref. 10). Species distribution models showed that both landscape and within-forest disturbances contributed to biodiversity loss, with the greatest negative effects on species of high conservation and functional value. These results demonstrate an urgent need for policy interventions that go beyond the maintenance of forest cover to safeguard the hyper-diversity of tropical forest ecosystems.
698 citations
Authors
Showing all 7995 results
Name | H-index | Papers | Citations |
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Serge Rambal | 72 | 196 | 20291 |
Giovanna Lombardi | 72 | 298 | 16502 |
Jos Barlow | 64 | 245 | 15975 |
Toby A. Gardner | 56 | 141 | 15640 |
Edgar Dutra Zanotto | 54 | 374 | 10456 |
Matías A. Avila | 53 | 208 | 8887 |
Edward A. Fox | 53 | 522 | 13862 |
Robert M. Hughes | 52 | 190 | 9037 |
P. Silva | 48 | 185 | 7144 |
Rosane Freitas Schwan | 47 | 268 | 7782 |
Ary Teixeira de Oliveira-Filho | 46 | 135 | 7847 |
Nelson Lima | 44 | 273 | 6802 |
Luiz C.A. Oliveira | 43 | 207 | 7208 |
Nilton Curi | 40 | 448 | 7108 |
Luiz Roberto Guimarães Guilherme | 39 | 256 | 5719 |