Cryptic speciation in the Chinese white pine (Pinus armandii): Implications for the high species diversity of conifers in the Hengduan Mountains, a global biodiversity hotspot

Neopanorpa van der Weele, 1909 is the second largest genus of Panorpidae, and is endemic to the Oriental Region. Yunnan, a province in the southwestern region of China, is well-known as a biodiversity hotspot and abundant in Neopanorpa species. However, only sixteen species of Neopanorpa have been described from Yunnan hitherto and the taxonomic study of Neopanorpa in Yunnan has lagged far behind as compared with studies performed in neighboring regions. In the present study, notably high diversity of Neopanorpa species is found in the Hengduan Mountains of Yunnan. Seven species of Neopanorpa are described as new: N. semiorbiculata, N. tincta, N. triangulata, N. diancangshanensis, N. magnatitilana, N. longistipitata, and N. quadristigma spp. n. Neopanorpa spatulata Byers, 1965, originally described from Thailand, is recorded from China for the first time. Neopanorpa dimidiata Navás, 1930 is a synonym of N. brisi (Navás, 1930). Keys to species of Neopanorpa in Yunnan are provided. The phylogenetic relationships of Neopanorpa species from the Hengduan Mountains, the Indochinese Peninsula, and the eastern Himalayas are briefly discussed.

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Meta-analysis reveals severe pollen limitation for the flowering plants growing in East Himalaya-Hengduan Mountains region

BMC Ecology ◽

10.1186/s12898-020-00322-6 ◽

2020 ◽

Vol 20 (1) ◽

Author(s):

Xianfeng Jiang ◽

Yanping Xie

Keyword(s):

Confidence Interval ◽

Pollen Limitation ◽

Meta Analysis ◽

Flowering Plants ◽

Biodiversity Hotspot ◽

Clear Relationship ◽

Hengduan Mountains ◽

Independent Data ◽

The World ◽

Global Biodiversity

Abstract Background Pollen limitation occurs widely and has an important effect on flowering plants. The East Himalaya-Hengduan Mountains region is a global biodiversity hotspot. However, to our knowledge, no study has synthetically assessed the degree of pollen limitation in this area. The present study aims to reveal the degree of pollen limitation for the flowering plants growing on East Himalaya-Hengduan Mountains and to test whether the reproductive features or the elevation is closely correlated with the degree of pollen limitation in this area. Results We complied data from 76 studies, which included 96 species and 108 independent data records. We found that the flowering plants in this area undergo severe pollen limitation [overall Hedges’ d = 2.004, with a 95% confidence interval (1.3264, 2.6743)] that is much higher than that of the flowering plants growing in many other regions around the world. The degree of pollen limitation was tested to determine the correlation with the capacity for autonomous self-reproduction and with the pollination pattern (generalized vs. specialized pollination) of plants. In addition, we found a clear relationship between elevation and the degree of pollen limitation, which indicates that plants might undergo more severe pollen limitation in relatively high places. Conclusions This paper is the first to address the severe pollen limitation of the flowering plants growing in East Himalaya-Hengduan Mountains region. Moreover, we reveal the positive correlation between elevation and the degree of pollen limitation.

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Lectotypification of fifteen names of Rubus L. (Rosaceae) mainly from the Hengduan Mountains, China

Phytotaxa ◽

10.11646/phytotaxa.391.2.10 ◽

2019 ◽

Vol 391 (2) ◽

pp. 150

Author(s):

XIANHUA XIONG ◽

MENG LI ◽

TONGJUN LIANG ◽

WENBING JU ◽

BO XU ◽

...

Keyword(s):

Taxonomic Revision ◽

Biodiversity Hotspot ◽

Hengduan Mountains ◽

The World ◽

Global Biodiversity

Rubus Linnaeus (1753: 492), one of the most taxonomically challenging genera in Rosaceae (Lu 1983, Alice & Campbell 1999, Alice et al. 2008), comprises more than 700 species (Lu & Boufford 2003) and is distributed across the world except Antarctica (Alice & Campbell 1999). The Hengduan Mountains, the mountains at the eastern end of the Himalayas, are widely regarded as a global biodiversity hotspot. During a taxonomic revision of Rubus L. in the Hengduan Mountains and its neighbouring regions, we found that fifteen names have never been typified. Lectotypification of these names are designated here after examination of previous works (Zandee & Kalkman 1981, Kalkman 1984 & 1987, Monasterio-Huelin & Castroviejol 1993, Monasterio-Huelin 1996, Monasterio-Huelin & Webert 1996, Bean 1997a & b, Allen 1998, Widrlechner 1998, Matzke-Hajek 2001a & b, Sennikov & Weber 2010, Deng 2015, Weber 2015a & b, Gupta et al. 2016, Yang et al. 2016, Beek et al. 2017, Dash & Gupta 2017, Király 2017, Király et al. 2017).

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Meta-analysis reveals severe pollen limitation for the flowering plants growing in the East Himalaya-Hengduan Mountains region.

10.21203/rs.2.16294/v2 ◽

2020 ◽

Author(s):

xianfeng jiang ◽

Yanping Xie

Keyword(s):

Confidence Interval ◽

Pollen Limitation ◽

Meta Analysis ◽

Flowering Plants ◽

Biodiversity Hotspot ◽

Clear Relationship ◽

Hengduan Mountains ◽

Independent Data ◽

The World ◽

Global Biodiversity

Abstract Background: Pollen limitation occurs widely and has an important effect on flowering plants. The East Himalaya-Hengduan Mountains region is a global biodiversity hotspot. However, to our knowledge, no study has synthetically assessed the degree of pollen limitation in this area. The present study aims to reveal the degree of pollen limitation for the flowering plants growing on the East Himalaya-Hengduan Mountains and to test whether the reproductive features or the elevation is closely correlated with the degree of pollen limitation in this area.Results: We complied data from 76 studies, which included 96 species and 108 independent data records. We found that the flowering plants in this area undergo severe pollen limitation (overall Hedges’ d=2.004, with a 95% confidence interval [1.3264, 2.6743]) that is much higher than that of the flowering plants growing in many other regions around the world. The degree of pollen limitation was tested to determine the correlation with the capacity for autonomous self-reproduction and with the pollination pattern (generalized vs. specialized pollination) of plants. In addition, we found a clear relationship between elevation and the degree of pollen limitation, which indicates that plants might undergo more severe pollen limitation in relatively high places.Conclusions: This paper is the first to address the severe pollen limitation of the flowering plants growing in the East Himalaya-Hengduan Mountains region. Moreover, we reveal the positive correlation between elevation and the degree of pollen limitation.

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Meta-analysis reveals severe pollen limitation for the flowering plants growing in the East Himalaya-Hengduan Mountains region.

10.21203/rs.2.16294/v3 ◽

2020 ◽

Author(s):

Xianfeng Jiang ◽

Yanping Xie

Keyword(s):

Confidence Interval ◽

Pollen Limitation ◽

Meta Analysis ◽

Flowering Plants ◽

Biodiversity Hotspot ◽

Clear Relationship ◽

Hengduan Mountains ◽

Independent Data ◽

The World ◽

Global Biodiversity

Abstract Background: Pollen limitation occurs widely and has an important effect on flowering plants. The East Himalaya-Hengduan Mountains region is a global biodiversity hotspot. However, to our knowledge, no study has synthetically assessed the degree of pollen limitation in this area. The present study aims to reveal the degree of pollen limitation for the flowering plants growing on East Himalaya-Hengduan Mountains and to test whether the reproductive features or the elevation is closely correlated with the degree of pollen limitation in this area. Results: We complied data from 76 studies, which included 96 species and 108 independent data records. We found that the flowering plants in this area undergo severe pollen limitation (overall Hedges’ d=2.004, with a 95% confidence interval [1.3264, 2.6743]) that is much higher than that of the flowering plants growing in many other regions around the world. The degree of pollen limitation was tested to determine the correlation with the capacity for autonomous self-reproduction and with the pollination pattern (generalized vs. specialized pollination) of plants. In addition, we found a clear relationship between elevation and the degree of pollen limitation, which indicates that plants might undergo more severe pollen limitation in relatively high places.Conclusions: This paper is the first to address the severe pollen limitation of the flowering plants growing in East Himalaya-Hengduan Mountains region. Moreover, we reveal the positive correlation between elevation and the degree of pollen limitation.

Download Full-text