Artigos Científicos - ICB
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Item Acesso aberto (Open Access) Effects of changes in the riparian forest on the butterfly community (Insecta: Lepidoptera) in Cerrado areas(Universidade Federal do Pará, 2017-03) CABETTE, Helena Soares Ramos; SOUZA, Jaqueline Rodrigues; FEITOZA, Yulie Shimano; JUEN, LeandroPreserved riparian vegetation usually has greater environmental complexity than the riparian vegetation modified by human actions. These systems may have a greater availability and diversity of food resources for the species. Our objective was to evaluate the effect of changes on the structure of the riparian forest on species richness, beta diversity and composition of butterfly species in the Cerrado of Mato Grosso. We tested the hypotheses that: (i) higher species richness and (ii) beta diversity would be recorded in more preserved environments; and (iii) species composition would be more homogeneous in disturbed habitats. For hypothesis testing, the riparian vegetation of eight streams were sampled in four periods of the year in a fixed transect of 100 m along the shores. The richness of butterfly species is lower in disturbed than in preserved areas. However, species richness is not affected by habitat integrity. Beta diversity differed among sites, such that preserved sites have greater beta diversity, showing greater variation in species composition. In addition, beta diversity was positively affected by environmental heterogeneity. A total of 23 of the 84 species sampled occurred only in the changed environment, 42 were exclusive to preserved sites and 19 occurred in both environments. The environmental change caused by riparian forest removal drastically affects the butterfly community. Therefore, riparian vegetation is extremely important for butterfly preservation in the Cerrado and may be a true biodiversity oasis, especially during the dry periods, when the biome undergoes water stress and resource supply is more limited.Item Acesso aberto (Open Access) Flora do Ceará, Brasil: polygalaceae(Universidade Federal do Pará, 2018-06) LIMA, Igor Gonçalves; ALBUQUERQUE, Alex Melo Lins de; DIAS, Ana Cristina Andrade de Aguiar; LOIOLA, Maria Iracema BezerraThis study aimed carry out the floristic inventory of Polygalaceae species, as part of Flora of Ceará project. The study was based in the analysis of morphological characters of specimens obtained in field or in herborized collections from herbaria EAC, BHCB, HST, HVASF, RB and UFP. The field expeditions were realized between September/2015 and March/2016.. The identifications were based on specialized bibliography, confirmed by analysis of collections-types. In the Ceará State, 20 species and seven genera were registered: Acanthocladus (1) Asemeia (3), Bredemeyera (2), Caamembeca (1), Monnina (1), Polygala (9) and Securidaca (3). The species were registered in distincts vegetation types, but occurs, preferably, in stepic savannah (caatinga) and savannah (cerrado) and 13 (62%) were recorded in five Conservations Units. Monnina insignis and Polygala celosioides are new records for Ceará state.