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Cladium mariscus subsp. jamaicense. A. Habit. B. Inflorescence. C. Plant base, longitudinal section. D. Detail of leaf. E. Nutlet and upper unisexual floret with 2 filaments and rudimentary gynoecium. F. Spikelet. All from Ward 9082. Scale bars: A = 25 cm; B, C = 5 cm; D = 1 cm; E, F = 2 mm. Drawn by Jane Browning, reproduced with permission from the artist, originally published in Gordon-Gray (1995).
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Background and aims – The rise of DNA sequencing in systematics has brought more understanding of the Cyperaceae family worldwide. Through these studies, it has been possible to delineate major clades and classify its species into subfamilies, tribes, and genera. Today, we have a good understanding of the species diversity and geographic distributi...
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Lowland ecotype Cyperus rotundus L. (LE-CYPRO) has tubers that can grow and survive under flooded conditions. However, information on the responses of its tubers to the combination of soil depth or shoot clipping with flooding is unavailable. Two experiments were conducted to determine the germination and regrowth of LE-CYPRO tubers in response to...
Citations
... Comparing the two ranking methods, of the 30 genera selected by TFFA method (Table S4-2), only eleven had a VFFP score greater than 34% (Table S4- 2,No. 3,4,6,9,[11][12]14,16,22,28,30 and 37). The ranking results based on the VFFP score (Table 5) were significantly different from those obtained using the TFFA method (Table S4-2). ...
... The ranking results based on the VFFP score (Table 5) were significantly different from those obtained using the TFFA method (Table S4-2). Thirteen of the 57 VFFP-selected genera were monotypic ( Table 4, No. [4][5][6][7][8][9][10][11][12][13][14][15][16]. Of the 57 genera selected using VFFP as being representative of the Irrawaddy fish fauna, 28 were included in 15 families (subfamilies) out of the 32 families (subfamilies) selected by the VFFP method, as shown in column "Number of genera included in Table 5" in Table 3. ...
... In total, there were 21 monotypic genera in the two basins, and their VFFP values were all 100% ( Table 4, No. 3-14; Table 5, No. [4][5][6][7][8][9][10][11][12][13][14][15][16]. Of these monotypic genera, only four, Apocryptes, Chanda, Sillaginopsis, and Chonerhinos, were shared by the two basins, with the other monotypic genera being endemic to one of other basin. ...
Species diversity indices provide quantitative data for understanding the variations and trends in fish species diversity, as well as information on species richness and evenness. However, these diversity indices do not reflect differences in specific taxa, which can be of importance as key conservation targets, especially during the planning and construction of protected areas. In this study, simultaneously combining our improved traditional fish fauna analysis (TFFA) with the value of fish fauna presence (VFFP) methods, we studied fish diversity in the Salween and Irrawaddy basins. The results of the TFFA reflected the families (subfamilies) and genera that constitute the main body of fish diversity in the river basins. The results of the VFFP assessment showed which families (subfamilies) and genera were representative of certain characteristics in the basins. The VFFP scores of genera could be used as indicator indices and as priority taxa in the planning and construction of fish resource reserves. In this paper, we propose for the first time that the role and status of monotypic genera (genera comprising only a single species) in the conservation of fish diversity should not be ignored, and they should rather be a priority for protection.
