Invasive Plants: Turning Enemies into Value

Máximo, Patrícia; Ferreira, Luı́sa M.; Branco, Paula S.; Lourenço, Ana

doi:10.3390/molecules25153529

Cited by 20 publications

(19 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This fact, associated with the high number of endemic species, led the WWF (Word Wide Fund for Nature) to consider the Mediterranean Basin one of the great biodiversity hotspots worldwide [3]. However, several threats are destroying this genetic heritage, such as the fires that occurred in recent decades in mainland Portugal [4][5][6][7]. In addition to occurring more frequently, there has also been an increase in the burnt area, accumulating to hundreds of thousands of hectares.…”

Section: Introductionmentioning

confidence: 99%

Selective Shrub Management to Preserve Mediterranean Forests and Reduce the Risk of Fire: The Case of Mainland Portugal

Raposo

Gomes

Nunes

2020

Fire

View full text Add to dashboard Cite

The recurrent rural fires that occur annually in Portugal have reached great proportions due to a lack of effective landscape management. Attempts to solve this problem led to the legal imposition to cut back the vegetation in the fuel management areas, which has had a negative effect on biodiversity. National legislation protects three native plant species (Quercus suber, Q. rotundifolia and Ilex aquifolium). European legislation, through the Habitats Directive, also identifies some plant species that require strict protection, although it leaves out several endemic and rare plants. In this work we aim to differentiate the types of shrub plant material and their pyrophilic behavior, since the physical and chemical characteristics of vegetation can enhance or inhibit the progression of fire. Thus, based on phytosociological science, specifically at the class level, the dynamics of potential climatophilous vegetation in Portugal are presented and the classes that should be prioritized for control are identified. Based on ecology, it was possible to identify morphological patterns of vegetation. In short, the genera targeted for control under the National Forest Fire Protection Plan belong to the furthest states from the mature potential of a forest, generally consisting of heliophile shrubs and typically growing in degraded soils. The shrub species to be valued belong to dynamic states closer to the mature potential, consisting mainly of broad-leaved shrubs and those growing in better-preserved soils.

show abstract

Section: Introductionmentioning

confidence: 99%

Selective Shrub Management to Preserve Mediterranean Forests and Reduce the Risk of Fire: The Case of Mainland Portugal

Raposo

Gomes

Nunes

2020

Fire

View full text Add to dashboard Cite

show abstract

“…1a) pode se deve aos seus caracteres morfológicos e fisiológicos. Essa fitoinvasora Espécies invasoras possuem atributos funcionais (Alelopatia e relações simbióticas com fungos arbusculares) que contribuem para colonização de novos ambientes (Souza et al, 2016a;Araújo et al, 2017;Máximo et al, 2020). Além disso, a sua dispersão por anemocoria é outro fator que potencializa sua proliferação e permite sua distribuição em outros ambientes (Silva et al, 2018).…”

Section: Resultsunclassified

“…Espécies invasoras possuem atributos funcionais (Alelopatia e relações simbióticas) que ajudam na adaptação em novos ambientes com diferentes composições do solo, climáticas, e muitas vezes ainda têm a capacidade desenvolver estratégias reprodutivas que são importantes na competição com outras espécies (Máximo et al, 2020).…”

Section: Introductionunclassified

Fitossociologia de Dois Bosques de Caatinga Utilizados para Extração Foliar da Copernicia prunifera (Mill.) H.E.Moore e Infestados por Cryptostegia madagascariensis Bojer

Filho

Pinheiro

Bonilla

et al. 2021

Rev. Bras. Geog. Fis.

View full text Add to dashboard Cite

A Copernicia prunifera (Mill.) H.E.Moore é uma palmeira nativa do Brasil que é alvo do extrativismo anual da sua folha para retirada do pó e produção da cera, um produto muito comercializado nacional e internacionalmente. Essa palmeira vem sofrendo com a ameaça da Cryptostegia madagascariensis Bojer, espécie nativa da ilha de Madagascar, África. Essa planta, é considerada invasora no semiárido brasileiro, principalmente no bioma Caatinga, devido a sua facilidade de formar densas populações. O objetivo desse trabalho é comparar a estrutura fitossociológica de duas áreas de Caatinga com atividade extrativista da folha da Copernicia prunifera (Mill.) H.E.Moore e com a presença de Cryptostegia madagascariensis Bojer. Assim, foram selecionadas duas áreas, Área I – atividade extrativista intensiva das folhas da Copernicia prunifera (Mill.) H.E.Moore, Área II – não possui atividade extrativista intensiva. Para análise fitossociológica utilizou-se o método de parcelas, e catalogados os indivíduos com circunferência a altura do peito maior ou igual a 5 cm e altura maior ou igual a 1 m. Para a avaliação das comunidades vegetais, foram analisados os parâmetros fitossociológicos convencionais, e os índices de Similaridade, Diversidade, Equabilidade e Impacto Ambiental de Exóticas. Como resultado, foram inventariados 2.567 indivíduos pertencentes a 21 famílias, 28 gêneros e 39 espécies, das quais 21 são nativas, 17 endêmicas, 1 cultivada e 1 naturalizada, percebeu-se também que a diversidade na Área I foi menor quando comparada ao Área II. Assim, conclui-se que a presença da Cryptostegia madagascariensis Bojer associada à atividade extrativista intensiva reduz número de gêneros, espécies e famílias na Caatinga.Palavras-chave: Extrativismo, Semiárido, Fitodiversidade, Impacto Ambiental de Exóticas. Phytosociology of Two Caatinga Woods Used for Leaf Extraction of Copernicia prunifera (Mill.) H.E.Moore and Infested by Cryptostegia madagascariensis Bojer A B S T R A C TThe Copernicia prunifera (Mill.) H.E.Moore is a palm tree native to Brazil that is the target of the annual extractivism of its leaf for dust removal and wax production, a product very commercialized nationally and internationally. This palm has been suffering from the threat of Cryptostegia madagascariensis Bojer, a species native to the island of Madagascar, Africa. This plant is considered invasive in the Brazilian semiarid, mainly in the Caatinga biome, due to its ease of forming dense populations. The objective of this work is to compare the phytosociological structure of two areas of Caatinga with different degrees of extractive activity, leaves of Copernicia prunifera (Mill.) H.E.Moore and infestation by Cryptostegia madagascariensis Bojer in the municipality of Pacatuba - Ceará, Brazil. Thus, two areas were selected, Area I - intensive extractive activity of the leaves of Copernicia prunifera (Mill.) H.E.Moore, Area II - does not have intensive extractive activity. For phytosociological analysis, the plots method was used, and individuals with circumference greater than or equal to 5 cm and height greater than or equal to 1 m were cataloged. For the evaluation of plant communities, conventional phytosociological parameters were analyzed, along with the Similarity, Diversity, Equability and Environmental Impact of Exotics. As a result, 2,567 individuals belonging to 21 families, 28 genera and 39 species were inventoried, of which 21 are native, 17 endemic, 1 cultivated and 1 naturalized, it was also noticed that the diversity in Area I was lower when compared to Area II. Thus, it is concluded that the presence of Cryptostegia madagascariensis Bojer associated with intensive extractive activity reduces the number of genera, species and families in the Caatinga.Keywords: Extractivism, Semiarid, Phytodiversity, Environmental Impact of Exotics.

show abstract

“…allow them to take advantage of native species with the consequence of their disappearance and radical landscape modifications [ 2 ]. However, the chemistry of invasive species must vary, and with enormous biological activity potential that remains to be explored [ 3 ]. Invasive plants may serve as inexpensive and renewable sources of bioactive compounds.…”

Section: Introductionmentioning

confidence: 99%

Guaianolide Derivatives from the Invasive Xanthium spinosum L.: Evaluation of Their Allelopathic Potential

2022

View full text Add to dashboard Cite

Ziniolide, xantholide B (11α-dihydroziniolide), and 11β-dihydroziniolide, three sesquiterpene lactones with 12,8-guaianolide skeletons, were identified as volatile metabolites from the roots of Xanthium spinosum L., an invasive plant harvested in Corsica. Essential oil, as well as hydrosol and hexane extracts, showed the presence of guaianolide analogues. The study highlights an analytical strategy involving column chromatography, GC-FID, GC-MS, NMR (1D and 2D), and the hemi-synthesis approach, to identify compounds with incomplete or even missing spectral data from the literature. Among them, we reported the 1H- and 13C-NMR data of 11β-dihydroziniolide, which was observed as a natural product for the first time. As secondary metabolites were frequently involved in the dynamic of the dispersion of weed species, the allelopathic effects of X. spinosum root’s volatile metabolites were assessed on seed germination and seedling growth (leek and radish). Essential oil, as well as hydrosol- and microwave-assisted extracts inhibited germination and seedling growth; root metabolite phytotoxicity was demonstrated. Nevertheless, the phytotoxicity of root metabolites was demonstrated with a more marked selectivity to the benefit of the monocotyledonous species compared to the dicotyledonous species. Ziniolide derivatives seem to be strongly involved in allelopathic interactions and could be the key to understanding the invasive mechanisms of weed.

show abstract

Invasive Plants: Turning Enemies into Value

Cited by 20 publications

References 43 publications

Selective Shrub Management to Preserve Mediterranean Forests and Reduce the Risk of Fire: The Case of Mainland Portugal

Selective Shrub Management to Preserve Mediterranean Forests and Reduce the Risk of Fire: The Case of Mainland Portugal

Fitossociologia de Dois Bosques de Caatinga Utilizados para Extração Foliar da Copernicia prunifera (Mill.) H.E.Moore e Infestados por Cryptostegia madagascariensis Bojer

Guaianolide Derivatives from the Invasive Xanthium spinosum L.: Evaluation of Their Allelopathic Potential

Contact Info

Product

Resources

About