https://ri.ufs.br/jspui/handle/riufs/22547 2026-05-04T02:24:35Z 2026-05-04T02:24:35Z Oliveira, Josevânia de Manso, Cynthia Lara de Castro Andrade, Edilma de Jesus https://ri.ufs.br/jspui/handle/riufs/24303 2026-01-19T19:44:30Z 2014-12-01T00:00:00Z

Título: Distribuição dos equinoides na Formação Jandaíra Autor(es): Oliveira, Josevânia de; Manso, Cynthia Lara de Castro; Andrade, Edilma de Jesus Abstract: This paper discuss the occurrence of the regular echinoid species Goniopygus durandi, Rosadosoma riograndensis (Maury 1924), Phymosoma major (Coquand 1862), and the irregular echinoids Petalobrissus setifensis (Cotteau 1866), P. cubensis (Weisbord 1934), Mecaster fourneli (Agassiz & Desor 1847), M. texanus (Roemer 1852) and Mecaster sp in Camurim-01, Gangorrinha-2, Gov. Dix-Sept Rosado-2, Gov. Dix-Sept Rosado-6, Estreito-1 and Frei Antonio-3, which are fossiliferous localities of Jandaíra Formation, Potiguar Basin. The sample comprises 228 specimens that were collected in 2003 and 2011. Regarding the relative abundance of the echinoid species present in Jandaíra Formation limestones, it was observed that irregular echinoids appear in a large number compared to the regular ones. Camurim-1 and Gangorrinha-2 localities stood out for having the largest abundance of species, both endocyclic and exocyclic. In Gov. Dix-Sept Rosado-2 and Gov. Dix-Sept Rosado-6 the specimens of genus Mecaster were the only ones observed. Estreito-1 and Frei Antonio-3 had the smallest occurrence, where in the former the occurrence of regular species was observed and in the latter the occurrence of irregular ones. This occurrence pattern could be related to paleoenvironmental conditions and the species’ lifestyle, because the localities with the largest biodiversity and abundance are deposited near the edge of the basin, such as Camurim-1 and Gangorrinha-2.

2014-12-01T00:00:00Z Aragão, Ricardo de Almeida, José Antonio Pacheco de Figueiredo, Eduardo Eneas de Srinivasan, Vajapeyam Srirangachar https://ri.ufs.br/jspui/handle/riufs/22920 2025-08-15T18:13:17Z 2011-07-01T00:00:00Z

Título: Mapeamento do potencial de erosão laminar na Bacia do Rio Japaratuba, SE, via SIG Autor(es): Aragão, Ricardo de; Almeida, José Antonio Pacheco de; Figueiredo, Eduardo Eneas de; Srinivasan, Vajapeyam Srirangachar Abstract: Soil erosion is a natural phenomenon that reduces soil fertility and causes a great impact on agricultural areas. Laminar erosion is characterized by the removal of the top soil fairly uniformly as well as its nutrients, which is accelerated by human activities. To minimize the impacts it is necessary to adopt an adequate soil management that takes into account the type of the soil, relief, and vegetation cover. The soil management can be aided by mapping the erosive potential of a region using GIS tools. In this work, the technique that was used for mapping the erosive potential in the Japaratuba River Basin (1685 km2 ) located in the State of Sergipe is presented. The results show that 48.71% of the basin area lie within medium and high erosive potentials zones, suggesting the inadequate land use for the soil types and relief within the basin.

2011-07-01T00:00:00Z