Genomics of the divergence continuum in an African plant biodiversity hotspot, I: drivers of population divergence inRestio capensis(Restionaceae)

2014 ◽  
Vol 23 (17) ◽  
pp. 4373-4386 ◽  
Author(s):  
C. Lexer ◽  
R. O. Wüest ◽  
S. Mangili ◽  
M. Heuertz ◽  
K. N. Stölting ◽  
...  
PLoS Biology ◽  
2011 ◽  
Vol 9 (5) ◽  
pp. e1000620 ◽  
Author(s):  
T. Jonathan Davies ◽  
Gideon F. Smith ◽  
Dirk U. Bellstedt ◽  
James S. Boatwright ◽  
Benny Bytebier ◽  
...  

2017 ◽  
Vol 215 (2) ◽  
pp. 891-905 ◽  
Author(s):  
Oscar Alejandro Pérez-Escobar ◽  
Guillaume Chomicki ◽  
Fabien L. Condamine ◽  
Adam P. Karremans ◽  
Diego Bogarín ◽  
...  

Rodriguésia ◽  
2019 ◽  
Vol 70 ◽  
Author(s):  
Guilherme Medeiros Antar ◽  
Paulo Takeo Sano

Abstract This study provides a checklist of angiosperm species from Jalapão region, Tocantins, Brazil, inserted within the Cerrado biome, a global biodiversity hotspot. The region of Jalapão is still well preserved despite current threats to its biodiversity, however its plant diversity is still poorly understood. To generate the present checklist, fieldwork was carried out and relevant herbarium collections were consulted. Angiosperms distributed in the grassland and savanna physiognomies with dry, non-rocky soils were recorded. We detected 550 species within 85 families. The richest families are Leguminosae, Poaceae, Asteraceae, Lamiaceae, Rubiaceae, Myrtaceae, Malpighiaceae and Euphorbiaceae. Among the plant species, ten are listed as rare, ten are threatened, and twelve were identified as new to science. This study increases the number of angiosperm species occurring in these vegetation types in Jalapão almost 2-fold compared to previous inventories. The Cerrado biome and Jalapão region are under heavy threat due to agricultural expansion, and our study contributes to the knowledge of plant biodiversity as a fundamental step towards designing and carrying out conservation actions.


2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jia-hui Chen ◽  
Yuan Huang ◽  
Benjamin Brachi ◽  
Quan-zheng Yun ◽  
Wei Zhang ◽  
...  

AbstractThe Hengduan Mountains (HDM) biodiversity hotspot exhibits exceptional alpine plant diversity. Here, we investigate factors driving intraspecific divergence within a HDM alpine species Salix brachista (Cushion willow), a common component of subnival assemblages. We produce a high-quality genome assembly for this species and characterize its genetic diversity, population structure and pattern of evolution by resequencing individuals collected across its distribution. We detect population divergence that has been shaped by a landscape of isolated sky island-like habitats displaying strong environmental heterogeneity across elevational gradients, combined with population size fluctuations that have occurred since approximately the late Miocene. These factors are likely important drivers of intraspecific divergence within Cushion willow and possibly other alpine plants with a similar distribution. Since intraspecific divergence is often the first step toward speciation, the same factors can be important contributors to the high alpine species diversity in the HDM.


2020 ◽  
Vol 33 ◽  
pp. 23
Author(s):  
Danilo Malara ◽  
Pietro Battaglia ◽  
Pierpaolo Consoli ◽  
Erika Arcadi ◽  
Simonepietro Canese ◽  
...  

The Strait of Messina is located at the centre of the Mediterranean Sea and is considered a biodiversity hotspot and an obligatory seasonal passage for different pelagic species such as sharks, marine mammals, and billfishes. For the first time, in the Strait of Messina, our research group tagged a Mediterranean spearfish (Tetrapturus belone) using a pop-up satellite archival tag (PSAT). The observation of abiotic parameters (depth, light, and temperature) recorded by the PSAT confirmed that the tagged specimen was predated after about nine hours. The tag was then regurgitated 14 days after the tag deployment date. The analysis of collected data seems to indicate that the predator may be an ectothermic shark, most likely the bluntnose sixgill shark (Hexanchus griseus).


Author(s):  
Natacha Frachon ◽  
Martin Gardner ◽  
David Rae

Botanic gardens, with their large holdings of living plants collected from around the world, are important guardians of plant biodiversity, but acquiring and curating these genetic resources is enormously expensive. For these reasons it is crucial that botanic gardens document and curate their collections in order to gain the greatest benefit from the plants in their care. Great priority is given to making detailed field notes and the process of documentation is often continued during the plants formative years when being propagated. However, for the large majority of plants this process often stops once the material is planted in its final garden location. The Data Capture Project at the Royal Botanic Garden Edinburgh is an attempt to document specific aspects of the plant collections so that the information captured can be of use to the research community even after the plants have died.


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