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| Colado,Maria Luciana Zequim; Reis,Letícia Koutchin; Guerra,Angélica; Ferreira,Bruno Henrique dos Santos; Fonseca,Diego Rezende; Timóteo,Amanda; Gondim,Evânia Xavier; Guerin,Natalia; Garcia,Letícia Couto. |
| ABSTRACT Ecological restoration by direct seeding in the Cerrado biome still lacks information about native species germination, the need for dormancy overcoming and seed bank formation. This study aims to verify the effects of dormancy overcoming on germination of four tree species and the ability of 12 tree species to form seed banks for restoration use. Our results showed wide variation of species’ germination rates. Overcoming dormancy enhanced germination for Dimorphandra mollis, Hymenaea stigonocarpa, and Peltophorum dubium and decreased it for Copaifera langsdorffii, but was only cost-effective for H. stigonocarpa. Regarding the ability to form seed banks, only H. stigonocarpa and Cecropia pachystachya germinated and live seedlings of Terminalia... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Direct sowing; Ecophysiology; Neotropical savanna; Restoration ecology; Seed photoblastism. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400694 |
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| Ferreira,Bruno Henrique dos Santos; Souza,Camila Silveira; Fachardo,André Luiz Silva; Gomes,Aline Conceição; Sigrist,Maria Rosângela. |
| ABSTRACT Cleistocactus baumannii is the only ornithophilous cactus species in the Brazilian Chaco. In addition, this species of Cactaceae invests heavily in flowering in the ecoregion. Such characteristics motivated us to evaluate the temporal availability of flowers in the context of its floral visitors. The reproductive system of C. baumannii, the number of individuals in flowering, flower abundance and the frequency and richness of floral visitors were evaluated and quantified. Nectar robbery was a frequent phenomenon in the studied population; therefore, we compared the pollen load deposited on the stigma of damaged (robbery) and undamaged flowers. In the Brazilian Chaco, C. baumannii is self-incompatible and has a continuous flowering pattern,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arid environments; Chlorostilbon lucidus; Floral damage; Nectar robbery; Ornitophily; Xylocopa splendidula. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100167 |
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