Distribuição espacial e estrutura populacional de Pilosocereus pachycladus F. Ritter subsp. pernambucoensis (F. Ritter) Zappi e Cereus jamacaru DC. subsp. jamacaru

Oliveira, Ivan Sérgio da Silva; Souza, Vênia Camelo de; Quirino, Zelma Glebya Maciel; Costa, Paulo Marks de Araújo; Barbosa, Alex da Silva; Gomes, Daniel da Silva

doi:10.33448/rsd-v9i10.8466

Cited by 2 publications

(2 citation statements)

References 28 publications

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“…Although Cactaceae species are an important component of the Caatinga flora (BARBOSA et al, 2020a), populations of many species have been subjected to predatory exploitation and degradation of their habitats (MEIADO; ALMEIDA, 2022), making Cactaceae one of the ten most threatened botanical families in the Brazilian flora (GOMES et al, 2020). Natural Cactaceae populations are subjected to strong anthropogenic pressures, which considerably increases risks of extinction (OLIVEIRA et al, 2020). Natural disturbances by herbivory or anthropogenic causes, environmental conditions, and availability of resources affect the populational structure and distribution of P. pachycladus subsp.…”

Section: Introductionmentioning

confidence: 99%

“…Natural disturbances by herbivory or anthropogenic causes, environmental conditions, and availability of resources affect the populational structure and distribution of P. pachycladus subsp. pernambucoensis and T. inamoena (BARBOSA et al, 2020b;OLIVEIRA et al, 2020). Despite the current conservation status of these two species are "little worrisome", recent studies indicate a significant decrease in the distribution of these and other cactus species in their original sites of occurrence, mainly for the future scenario of climate changes (CARVALHO et al, 2021;CAVALCANTE;SAMPAIO, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Conservation of seeds of cactaceae species endemic to the caatinga biome: Pilosocereus pachycladus and Tacinga inamoena

2023

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Ecosystems with dry soils are particularly sensitive to climate changes and anthropogenic actions, which represents a threat to the survival of many cactus species. Ex situ seed conservation strategies should be adopted to support in situ conservation. This study evaluated the effect of conservation conditions on germination and vigor of seeds of Pilosocereus pachycladus subsp. pernambucoensis and Tacinga inamoena. The seeds were packaged in paper bags and glass containers and stored under controlled (8 ± 1 °C; 56 ± 2% relative humidity) and non-controlled (24 ± 2 °C; 75 ± 5% relative humidity) environmental conditions for 0 (control), 12, 16, and 20 months. The experiment was conducted in a completely randomized design, in a 2 × 2 × 4 factorial arrangement (conservation environment × packaging × storage period) for each species. The variables evaluated were: water content (%), germination (%), germination speed index (GSI), and mean germination time (MGT). The physiological quality of seeds of both species were preserved when seeds were maintained under controlled environment, regardless of the packaging. However, when stored under non-controlled environment, the packaging in paper bags was more efficient for the conservation of seeds of P. pachycladus subsp. pernambucoensis, and the glass container was more efficient for T. inamoena. This information may be needed for ex situ conservation of these species and to support the recovery of degraded areas susceptible to desertification in the Caatinga biome.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Conservation of seeds of cactaceae species endemic to the caatinga biome: Pilosocereus pachycladus and Tacinga inamoena

2023

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Análise populacional de Tacinga inamoena (K. Schum.) N. P. Taylor & Stuppy numa Caatinga Hiperxerófila

Barbosa

Andrade

Silva

et al. 2020

RSD

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Estudos acerca da análise estrutural e arranjo espacial de Cactaceae são importantes para compreender a dinâmica populacional em ecossistemas naturais, bem como podem auxiliar programas futuros de uso e conservação. Assim sendo, o objetivo desse estudo foi avaliar a distribuição espacial de Tacinga inamoena numa área de caatinga preservada na microrregião do Cariri Paraibano. Foram plotadas 100 parcelas com dimensões de 10 m x 10 m em cada área. Dentro das parcelas, todos os indivíduos foram etiquetados e a altura total e a circunferência foram auferidas ao nível da base do caule com auxílio de uma fita métrica. A estrutura espacial das populações foi obtida pela coleta da coordenada geográfica de cada indivíduo em cada área e expressa por meio de mapas de distribuição espacial. Foram amostrados 34 espécimes na área amostral, apresentando área basal (AB) de 0,02 m2, densidade absoluta (DA) de 34 ind.ha-1 e frequência absoluta (FA) de 6%, estando dispostos em agregados (IGA=5,49). Os indivíduos de Tacinga inamoena possuem hábito de crescimento agregado e estrutura populacional em fase de estabelecimento em caatinga preservada.

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Distribuição espacial e estrutura populacional de Pilosocereus pachycladus F. Ritter subsp. pernambucoensis (F. Ritter) Zappi e Cereus jamacaru DC. subsp. jamacaru

Cited by 2 publications

References 28 publications

Conservation of seeds of cactaceae species endemic to the caatinga biome: Pilosocereus pachycladus and Tacinga inamoena

Conservation of seeds of cactaceae species endemic to the caatinga biome: Pilosocereus pachycladus and Tacinga inamoena

Análise populacional de Tacinga inamoena (K. Schum.) N. P. Taylor & Stuppy numa Caatinga Hiperxerófila

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