Climatic variables determining &lt;i&gt;Rhododendron&lt;/i&gt; sister taxa distributions and distributional overlaps in the Himalayas

Suwal, Madan Krishna; Vetaas, Ole R.

doi:10.21425/f59334911

Cited by 3 publications

(4 citation statements)

References 38 publications

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“…We took an average of five downscaled general circulation models, namely ACCESS1-0, BCC-CSM1-1, GISS-E2-R, MIROC-ESM-CHEM and MPI-ESM-LR, to reduce model-wise variations (Beaumont, Hughes, & Pitman, 2008;Suwal & Vetaas, 2017). We predicted for a single worst case scenario (i.e., RCP8.5) and a single future period 2070 (average of 2060 to 2080; Hijmans et al, 2005).…”

Section: Future Climate Scenario Selection For Potential Distributionmentioning

confidence: 99%

“…However, the omission error of both MaxEnt and Random Forest for the eastern population is notably high. This is probably because of the wide geographic distribution that is a challenge for the model-training procedure (Franklin, Wejnert, Hathaway, Rochester, & Fisher, 2009;McPherson & Jetz, 2007;Suwal & Vetaas, 2017).…”

Section: The Potential Distribution Of Both Subspecies In the Currementioning

confidence: 99%

“…Most studies on niche similarity are carried out within species and between species, and between hybridizing parents and their decedent species (Nakazawa et al, 2010;Peterson et al, 1999;Suwal & Vetaas, 2017;Vetaas, 2002). The intraspecies (e.g., subspecies) fundamental niches are expected to overlap to some extent, because fundamental niches are conserved over time (Losos, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Parapatric subspecies of Macaca assamensis show a marginal overlap in their predicted potential distribution: Some elaborations for modern conservation management

Suwal

Huettmann

Regmi³

et al. 2018

Ecology and Evolution

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Phylogenetic niche conservatism implies that sister taxa will have similar niches, although the niches of disjunct subspecies may evolve differently. This study uses Macaca assamensis, subspecies assamensis and pelops, to investigate the similarities of realized climatic niches of two disjunct subspecies (separated by the Brahmaputra River) along with a similarity analysis of their respective regions’ climate. Modeled distributions were used to quantify their potential distribution under current and future climate scenarios. The climatic similarity between regions of each subspecies was tested with principal component analysis (PCA), and the realized climatic niche overlap between two subspecies was tested with a multivariate analysis of variance (MANOVA) on a subset of the least correlated variables out of 24 publicly available topo‐bioclimatic variables. Tukey's honest significance difference (HSD) was used to test the range differences (on all 24 variables) between subspecies. The potential distribution of both taxa in the current climate and projected future climate was model‐predicted using MaxEnt and Random Forest. We found significantly different climatic ranges for 21 predictors (HSD; p < 0.05) for the two subspecies, significantly different climatic conditions for their regions (using PCA; p < 0.001), and significantly different realized climatic niches for the two subspecies (MANOVA; p < 0.001). The distribution models generated a larger potential area than the currently known distributions. Although literature show that the Brahmaputra River is an effective dispersal barrier, we found some of the neighboring geographic range for both subspecies appears to be potentially suitable for the other taxon. The projected future potential areas indicate that some parts of the currently occupied geography, mostly southern parts, may become climatically unsuitable, whereas other new geographical areas may become suitable. Most of these new potential areas will be toward the north where higher and fragmented mountains, which has conservation implications.

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Section: Future Climate Scenario Selection For Potential Distributionmentioning

confidence: 99%

Section: The Potential Distribution Of Both Subspecies In the Currementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parapatric subspecies of Macaca assamensis show a marginal overlap in their predicted potential distribution: Some elaborations for modern conservation management

Suwal

Huettmann

Regmi³

et al. 2018

Ecology and Evolution

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“…Рододендрони в дикому стані найчастіше зустрічаються у районах із помірним та субтропічним кліматом, інколи у субарктичній зоні. Поширені у Північно-Східній Азії, Північній Америці, Південному Китаї, Гімалаях, Японії, Новій Гвінеї, на північному сході Австралії [3,4,5]. В Україні в природних умовах можна зустріти тільки два види: рододендрон жовтий (Rhododendron luteum Sweet) у Поліссі та рододендрон карпатський (Rhododendron myrtifolium Schott & Kotschy) на схилах Карпат.…”

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Research of fatty and organic acids in Rhododendron luteum Sweet leaves

Gaponenko

Mashtaler

Mala

et al. 2021

Farm Zh

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Rhododendron luteum Sweet of the Heath family Ericaceae is found on the territory of Ukraine both in the wild and is widely cultivated in botanical gardens, parks, squares. Leaves and inflorescences are used to treat heart disease, rheumatism, gout, and disorders of the nervous system. The literature data on the chemical composition relate to the presence of aminoacids, organic acids, essential oils, phenolic and triterpene compounds, andromedol derivatives. The aim of the work was to determine the composition and content of fatty and organic acids in the Rhododendron luteum Sweet leaves by gas chromatography-mass spectrometry. The object of the study was the leaves of Rhododendron luteum Sweet, collected on the territory of the botanical garden of H. S. Skovoroda Kharkiv National Pedagogical University in 2019. Gas chromatography - mass spectrometric study of the component composition and content of fatty and organic acids in the leaves of the studied plant on an Agilent Technologies 6890 chromatograph with a 5973 mass spectrometric detector was carried out. In Rhododendron luteum Sweet leaves 37 substances were found and identified. Fatty acids were represented by 17 compounds. Among saturated fatty acids, palmitic acid (3 276.2 mg/kg) was prevailed, among monounsaturated – oleic (736.78 mg/kg), among polyunsaturated – linolenic (1 617.65 mg/kg). The smallest amounts contained heneukocylic (46.33 mg/kg), lauric (58.17 mg/kg) and caproic (68.17 mg/kg) acids, which belong to saturated fatty acids. The presence of 20 organic acids in the raw material was also established: citric (8 680.30 mg/kg) and iso-citric (4 106.85 mg/kg) acids dominated in terms of quantitative content; oxalic (1 685.65 mg/kg) and malic (1 310.82 mg/kg) acids were contained in significant amounts. Among the derivatives of hydroxybenzoic acid, the greatest amount was presented by gentisic (187.76 mg/kg) acid, among the derivatives of hydroxycinnamic acids – p-coumaric (312.62 mg/kg). For the first time, the qualitative composition and quantitative content of fatty and organic acids in Rhododendron luteum Sweet leaves was studied by gas chromatography with a mass spectrometric detector. The obtained results indicate the prospects for further study of raw materials to develop drugs with membrane stabilizing and anti-inflammatory activity.

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A Comprehensive Review on the Taxonomy, Ecology, Reproductive Biology, Economic Importance and Conservation Status of Indian Himalayan Rhododendrons

Basnett

Ganesan

2022

Bot. Rev.

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Climatic variables determining <i>Rhododendron</i> sister taxa distributions and distributional overlaps in the Himalayas

Cited by 3 publications

References 38 publications

Parapatric subspecies of Macaca assamensis show a marginal overlap in their predicted potential distribution: Some elaborations for modern conservation management

Parapatric subspecies of Macaca assamensis show a marginal overlap in their predicted potential distribution: Some elaborations for modern conservation management

Research of fatty and organic acids in Rhododendron luteum Sweet leaves

A Comprehensive Review on the Taxonomy, Ecology, Reproductive Biology, Economic Importance and Conservation Status of Indian Himalayan Rhododendrons

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