Synchronous fruiting and common seed dispersers of two endemic columnar cacti in the Caatinga, a dry forest in Brazil

Gomes, Vanessa Gabrielle Nóbrega; Meiado, Marcos Vinícius; Quirino, Zelma Glebya Maciel; Araújo, Helder Farias Pereira de; Machado, Isabel Cristina

doi:10.1007/s11258-017-0771-5

Cited by 17 publications

(19 citation statements)

References 38 publications

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“…The families Anacardiaceae, Burseraceae, Capparaceae and Celastraceae were registered only in this area, due to their representatives having an arboreal habit, thus composing the physiognomy of the Caatinga tree, which according to Fernandes[23]; Andrade, et al[24];Souza, et al[7]; Batista, et al[25] in their studies corroborate this information. The families that presented the highest number of species were: Euphorbiaceae, Fabaceae and Cactaceae, this was also confirmed by several authors when studying the richness and diversity of the Caatinga[8,26,27].Lima, et al[27] studying the semi-arid region of Paraíba, found that the species Myracrodruon urundeuva and Commiphora leptophloeos are more frequent, found in more protected areas, and are rarely recorded in heavily anthropized areas, such as areas with mineral exploration. In the 20-year mineral impact regeneration area, 1.109 individuals belonging to 10 species were registered.…”

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Temporal Rhythms of Dry Tropical Forest Regeneration under Exploration of Granite-Gnaisse Mining in a Semi-Arid Area

Alves¹,

Gomes

Moura

et al. 2021

Journal of Forests

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This research aims to identify and analyze the level of regeneration of Caatinga vegetation in different stages, under the impact of granite-gneiss mining in a semi-arid region in Northeast Brazil. To carry out the floristic and phytosociological survey, four areas of vegetation cover were selected in different stages of regeneration: 20 years (closed bush shrubland); 15 years (open bush shrub); 10 years (sub-shrub Caatinga); 50 years (reference area with shrubby Caatinga). The species records of the four sampled areas were compared using the Jaccard and Sorensen similarity index. For the phytosociological analysis, the parameters of Basal Area, Absolute and Relative Density, Absolute and Relative Dominance and Coverage Value of the species were calculated. The floristic survey registered 5,494 individuals belonging to 14 families and 34 species. It was found that Euphorbiaceae and Fabaceae were the families that contributed with the largest number of species in the tree and shrub components. The species in the areas where there was exploitation 20 and 15 years ago showed a regeneration process close to that registered in the preservation area for 50 years. However, with respect to wealth, the 20-year area showed the greatest abundance. From the results it was possible to know the process of regeneration of the pioneer and secondary successional species in the Caatinga, contributing to the preservation of the species and the recovery of degraded areas in the semi-arid region of Paraíba. Contribution/Originality: The exploitation of granites and gneisses has a high economic impact in the state of Paraiba. There are extensive areas under environmental impact and biological loss due to the removal of vegetation. We characterize the rate of regeneration of Caatinga vegetation with a history of exploitation of these rocks.

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“…This vegetation presents degradation processes, such as deforestation, which alter floristics and natural regeneration. However, the elimination of vegetation cover causes serious environmental problems in the Northeastern Semi-arid, among which the reduction of biodiversity and soil degradation, mainly by mining, stand out [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Temporal Rhythms of Dry Tropical Forest Regeneration under Exploration of Granite-Gnaisse Mining in a Semi-Arid Area

Alves¹,

Gomes

Moura

et al. 2021

Journal of Forests

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“…We opened the fruits manually and placed the seeds to dry in plastic trays at room temperature until the funicular pulp was completely dehydrated. After this procedure, we manually removed the dehydrated funicular pulp from the seeds, washed them in running water and dried them at room temperature (Gomes et al 2017). Germination tests and parameters evaluated.…”

Section: Methodsmentioning

confidence: 99%

Gibberellic acid provides greater tolerance to saline stress in cactus seed germination

Lima¹,

Oliveira²,

Meiado³

2020

Commun. Plant Sci.

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It is important to understand the ecophysiological behavior and develop techniques applicable to conservation measures of species that inhabit arid and semi-arid ecosystem and are exposed to adverse environmental conditions. The objective of this study was to evaluate the effects of gibberellic acid (GA3) application during seed germination under saline stress conditions of a cactus. Pilosocereus gounellei susbp gounellei seeds were submitted to NaCl saline solutions at osmotic potentials of 0.0,-0.3,-0.6 and-0.9 MPa. For each osmotic potential, GA3 concentrations of 0, 100, 200 and 300 ppm were used. The results indicated that salt stress reduces germination percentage and synchronization as seeds are submitted to more negative osmotic potentials, as well as delaying germination time. However, this negative effect of NaCl was reversed when the seeds were subjected to the specific concentration of 100 ppm of gibberellic acid. Therefore, our study demonstrated that the application of GA3 at specific concentration improves the germinative metabolism of cactus seeds and promotes the acquisition of tolerance to saline stress conditions by increasing germinability, reducing germination time and increasing synchronization, thus representing a viable technique for seed germination and seedlings production under adverse environmental conditions. Highlighted Conclusions 1. The application of GA3 at specific concentration improves the germinative metabolism of cactus seeds and promotes the acquisition of tolerance to saline stress conditions. 2. The application of GA3 represents a viable technique for seed germination and seedlings production under adverse environmental conditions.

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“…These plants rarely reach 0.50 m in height (Taylor and Zappi 2004), which facilitates access to fr its and o ers on t e cep a i m structure by the lizards (Figueira et al 1994, Gomes et al 2014. However, other studies have shown that interactions between lizards and (Gomes et al 2016(Gomes et al , 2017 was recorded, whereas, on rock outcrops in the Atlantic Forest, individuals of T. torquatus (Wied-Neuwiedi, 1820) consume fruits of Coleocephalocereus fluminensis (Miq.) Backeb.…”

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Frugivory by Tropidurus hispidus (Squamata: Tropiduridae) on the cactus Pilosocereus pachycladus in the Brazilian Caatinga

2021

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Synchronous fruiting and common seed dispersers of two endemic columnar cacti in the Caatinga, a dry forest in Brazil

Cited by 17 publications

References 38 publications

Temporal Rhythms of Dry Tropical Forest Regeneration under Exploration of Granite-Gnaisse Mining in a Semi-Arid Area

Temporal Rhythms of Dry Tropical Forest Regeneration under Exploration of Granite-Gnaisse Mining in a Semi-Arid Area

Gibberellic acid provides greater tolerance to saline stress in cactus seed germination

Frugivory by Tropidurus hispidus (Squamata: Tropiduridae) on the cactus Pilosocereus pachycladus in the Brazilian Caatinga

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