The impact of invasive Hyptis suaveolens on the floristic composition of the periurban ecosystems of Chandigarh, northwestern India

Sharma, Anita; Batish, Daizy R.; Singh, Harminder Pal; Jaryan, Vikrant; Kohli, R. K.

doi:10.1016/j.flora.2017.04.008

Cited by 30 publications

(15 citation statements)

References 34 publications

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“…The NL/P, NC/P, and NF/P were counted manually at the study sites. Following Sharma et al, 2017 , various functional parts of the sampled plants, namely NL, above and below‐ground biomasses, NC and NF, were oven‐dried for 72 hours at a temperature of 60°C and then weighted by electronic balances to determine LDBM/P, ADBM/P, BDBM/PP, IDBM/P, and FDBM/P with a precision of = .0101 g. The NC/P and NF/P of the sampled plants were dried. In the AGDB/P measurement FDBM/P was omitted.…”

Section: Methodsmentioning

confidence: 99%

Which factor explains the life‐history of Xanthium strumarium L., an aggressive alien invasive plant species, along its altitudinal gradient?

2022

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Invasive biology acknowledges the concept of better performance by invasive plants in the introduced range. Xanthium strumarium L. is one of the successful invasive species in Khyber Pakhtunkhwa, Pakistan. The phenological pattern, vegetative and reproductive traits plasticity analysis of the species was explored to explain the invasive success across the altitudinal gradient in the current invaded habitats. Phenological patterns and timing (seedling, vegetative growth, flowering and fruiting, drying, and seed bank) were observed during a full year for two seasons. We also examine plant functional traits at altitudes of 500, 1000, and 1500 m a.s.l. to assess traits and biomass variations. The X. strumarium exhibits late vegetative and reproductive phenology at higher altitudes, enabling them to occupy an empty niche and benefit from decreased competition for resource acquisition. The lower altitude plants show a higher growth rate (stem size increase, number of leaves, and leaf area) due to the higher nutrient availability. Higher altitude plants have the highest reproductive biomass and biomass ratio revealing plant abilities to be reproductively adapted in the higher altitudes. Among climatic variables, mean yearly temperature, mean annual yearly humidity, and mean day length in hours, while in soil variables, organic matter and nitrogen percentage significantly affect the phenological and morphological stages. Therefore, we conclude that X. strumarium can invade higher altitudes with a shift in its phenological and morphological changes making the invasion process successful.

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Section: Methodsmentioning

confidence: 99%

Which factor explains the life‐history of Xanthium strumarium L., an aggressive alien invasive plant species, along its altitudinal gradient?

2022

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“…These species, during the drought periods lose their leaves, the site of essential oil synthesis, and therefore, the soil where they fall will contain several allelochemicals (Li, Wang, Ruan, Pan, & Jiang, 2010). In the study by Sharma, Batish, Singh, Jaryan and Kohli (1995), it has been shown that Mesosphaerum suaveolens adversely impacts the number of species, diversity, richness and plant uniformity, so that infestation of this plant may compromise the succession of other plants in the community.…”

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confidence: 99%

Allelopathy of Aromatic Species on the Germination of Cereus jamacaru DC. subsp. jamacaru (Cactaceae)

Bezerra¹,

Santos²,

Meiado³

et al. 2018

JAS

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Cereus jamacaru DC subsp. jamacaru, has been suffering from severe anthropic pressure, in addition, when their seeds are dispersed, some end up not germinating due to the action of allelochemicals. Therefore, the present study was to evaluate the allelopathic effect of the essential oil (EO) from four species over C. jamacaru germination, as well as to identify their constituents. Four plants were selected for EO extraction (Mesospherum suaveolens (L.) Kuntze, Lantana montevidensis (Spreng.) Briq., Lantana camara L., and Tarenaya spinosa (Jacq.) Raf.) and the chemical analysis was performed by GC-MS. In order to evaluate the allelopathic activity of the EO's, the C. jamacaru seeds were treated with the EO's. The results showed that the EO's presented heterogeneity in their composition, with M. suaveolens presenting the highest number of constituents (44), followed by L. camara (26), T. spinosa (23) and L. montevidensis (22). All the oils negatively affected the C. jamacaru germination percentage in a concentration-dependent manner. Regarding the GVI, the M. suaveolens, L. montevidensis and L. camara OEs significantly decreased this index at all analyzed concentrations. Based on the results obtained, it is suggested that C. jamacaru should not be sown close to the aforementioned aromatic species in reforestation programs.

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“…Hyptis suaveolens in areas already invaded is abundant and spreading rapidly, resulting in the homogeneity of floras, reduced biodiversity and a reduction in the ecolog- ical integrity of the native habitats and ecosystems functioning (Hulme et al 2003;Borokini and Babalola 2012). It has caused a 46-52% decrease in species evenness in the periurban ecosystems in Chandigarh, north-western India (Sharma et al 2017). There are invasive potential hotspots of Hyptis suaveolens in Abia, Adamawa, Bayelsa, Cross River, Nasarawa, Plateau, Rivers, Taraba and Rivers States, especially between latitude 8°52΄N and 12°07΄E in areas with derived savannah, which have suitable climatic conditions.…”

Section: Discussionmentioning

confidence: 99%

Predicting the distribution of the invasive species Hyptis suaveolens in Nigeria

David

Akomolafe

Onwusiri³

et al. 2021

European Journal of Environmental Sciences

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The impact of invasive Hyptis suaveolens on the floristic composition of the periurban ecosystems of Chandigarh, northwestern India

Cited by 30 publications

References 34 publications

Which factor explains the life‐history of Xanthium strumarium L., an aggressive alien invasive plant species, along its altitudinal gradient?

Which factor explains the life‐history of Xanthium strumarium L., an aggressive alien invasive plant species, along its altitudinal gradient?

Allelopathy of Aromatic Species on the Germination of Cereus jamacaru DC. subsp. jamacaru (Cactaceae)

Predicting the distribution of the invasive species Hyptis suaveolens in Nigeria

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