Mapping the spatial distribution of the invasive Mexican Sunflower Tithonia diversifolia (Asteraceae) in South East Asia

Boral, Debasruti; Moktan, Saurav

doi:10.1016/j.japb.2022.03.006

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…It is feared that it will invade local species and threaten areas, including Indonesia. Due to its high adaptation potential to the environment, causing the species' population to increase rapidly, an in-depth study is needed regarding other prospects of this species so that its existence is not threatening [35]. It was reported that the ethanol extract of T. diversifolia leaves has the potential to reduce blood glucose levels in mice, which makes this species a candidate as a raw material for medicines for Type 2 Diabetes Mellitus (T2DM) sufferers [36].…”

Section: Resultsmentioning

confidence: 99%

Ornamental plant potential of Asteraceae from the Gayo Highlands, Bener Meriah Regency

Puspa,

Zumaidar,

Nurdin

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Asteraceae have many species and beautiful flowers that became an attraction for cultivation and were used as ornamental or cut flowers. Asteraceae grow fertile in the high plains, as seen from the diversity of livable species and their phenetic flowers. The purpose of this research was inventory of the Asteraceae ornamental plants of the Gayo’s Highland. Analysis with explorative survey methods was conducted at eight districts in Bener Meriah Regency by conducting direct observations at the location of the statement’s object. The study found 19 species of Asteraceae belonging to 14 genera, including Dahlia, Tagetes, Cosmos, Zinnia, Chrysanthemum, Helianthus, Coreopsis, Tithonia, Melapodium, Tanacetum, Symphyotrichum, Callistephus, Centratherum, and Gerbera. The most commonly found genus is Dahlia, with three species with different color varieties, followed by Tateges, Cosmos, and Tithonia, with two species. This suggests that Dahlia is a favorite species and a potential plant to be chosen as an ornamental plant in the planning of the development of the Asteraceae flower garden as well as a cut flower and increasing its economic value.

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Section: Resultsmentioning

confidence: 99%

Ornamental plant potential of Asteraceae from the Gayo Highlands, Bener Meriah Regency

Puspa,

Zumaidar,

Nurdin

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Additionally, extreme weather events that are projected to get accentuated are slated to affect crop yields (Roy et al 2018). The situation Manipur is faced with is not dissimilar to that faced in other parts of highland SEA (Boral and Moktan 2022).…”

Section: Resultsmentioning

confidence: 99%

Agricultural land suitability analysis in Manipur, India using GIS and AHP

Baite,

Bhattacharjee,

Debbarma

et al. 2024

Auc Geographica

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This article aims to identify potential sites for agricultural use in the state of Manipur of north east India by employing the analytic hierarchy process in a geographic information system environment in conjunction with the use of remote sensing and soil data. Within the analytic hierarchy process, each terrain variable underwent a pairwise comparison and criteria weights were assigned according to their relative importance. Eight variables were selected and used in land suitability analysis for agriculture. It was found that Manipur had 57% (12,660 km2) of its total geographical area suitable for agriculture. However, 8126 km2 (37%) and 1374 km2 (6%) of the total geographical area was currently and permanently unsuitable land respectively. The distribution of suitable land varied greatly, with highly, moderately and marginally suitable land covering only 8%, 16% and 33% respectively of the total geographical area. The highly suitable agricultural land is predominantly concentrated in the Imphal valley (70%), though 90% of moderately suitable and 96% of marginally suitable land also exist in the hills. The hilly areas constitute 96% and 97% respectively of currently unsuitable and permanently unsuitable land in the state. Suitable land comprises of land with low to medium altitude, gentle to moderate slopes, soil of fine or acceptable quality, and with minimal flood risk. Unsuitable lands tend to be diametrically opposite to these attributes with steep hill slopes. The nature of distribution of land suitability types influences the agricultural pattern in Manipur. Agriculture in the hill areas comprises mainly of shifting cultivation on hill slopes, whereas in the valley region it is irrigated and permanent. This analysis of Manipur has a wider applicability since the shifting cultivation-irrigated agriculture combination is similar to that which exists across much of the highlands of South East Asia.

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“…The Jackknife test is a tool used to ensure consistent and accurate prediction of the model even in the absence of certain variables, thereby enhancing the overall validity of the model. It identifies the environmental variables influencing the distribution of species [ 51 , 52 , 53 ]. On the other hand, the response curve indicates species responses to specific environmental variables and helps identify a range of variables where species are more likely to thrive.…”

Section: Methodsmentioning

confidence: 99%

Projected Impacts of Climate Change on the Range Expansion of the Invasive Straggler Daisy (Calyptocarpus vialis) in the Northwestern Indian Himalayan Region

Lal,

Chauhan,

Kaur

et al. 2023

Plants

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Human-induced climate change modifies plant species distribution, reorganizing ecologically suitable habitats for invasive species. In this study, we identified the environmental factors that are important for the spread of Calyptocarpus vialis, an emerging invasive weed in the northwestern Indian Himalayan Region (IHR), along with possible habitats of the weed under current climatic scenarios and potential range expansion under several representative concentration pathways (RCPs) using MaxEnt niche modeling. The prediction had a high AUC (area under the curve) value of 0.894 ± 0.010 and a remarkable correlation between the test and expected omission rates. BIO15 (precipitation seasonality; 38.8%) and BIO1 (annual mean temperature; 35.7%) had the greatest impact on the probable distribution of C. vialis, followed by elevation (11.7%) and landcover (6.3%). The findings show that, unlike the current situation, “high” and “very high” suitability areas would rise while less-suited habitats would disappear. All RCPs (2.6, 4.5, 6.0, and 8.5) indicate the expansion of C. vialis in “high” suitability areas, but RCP 4.5 predicts contraction, and RCPs 2.6, 6.0, and 8.5 predict expansion in “very high” probability areas. The current distribution of C. vialis is 21.59% of the total area of the state, with “medium” to “high” invasion suitability, but under the RCP 8.5 scenario, it might grow by 10% by 2070. The study also reveals that C. vialis may expand its niche at both lower and higher elevations. This study clarifies how bioclimatic and topographic factors affect the dispersion of invasive species in the biodiverse IHR. Policymakers and land-use managers can utilize the data to monitor C. vialis hotspots and develop scientifically sound management methods.

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Mapping the spatial distribution of the invasive Mexican Sunflower Tithonia diversifolia (Asteraceae) in South East Asia

Cited by 5 publications

References 33 publications

Ornamental plant potential of Asteraceae from the Gayo Highlands, Bener Meriah Regency

Ornamental plant potential of Asteraceae from the Gayo Highlands, Bener Meriah Regency

Agricultural land suitability analysis in Manipur, India using GIS and AHP

Projected Impacts of Climate Change on the Range Expansion of the Invasive Straggler Daisy (Calyptocarpus vialis) in the Northwestern Indian Himalayan Region

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