Branched Bartonia (Bartonia paniculata), a threatened species, is a spindly annual plant that grows to 40 cm tall and has tiny white flowers. Researchers at Trent University compared genetic data from the two geographically distinct populations of this small wetland plant, and found that the Muskoka, Ontario ones are genetically very different from a core population found in New York State, 600 km away.
This discovery suggests that the Branched Bartonia in Ontario is genetically unique, and therefore under a much greater threat – which impacts conservation management decisions. The findings suggest that the genetic diversity, and hence biodiversity, in the Great Lakes region of Ontario may be much greater than previously realized. This research was published today in the journal Botany.
Populations of a species are commonly separated by relatively short distances, yet sometimes there is a leap of several hundred kilometres between a species’ core set of populations and a subset of populations that are known as disjuncts. In Ontario, Canada, numerous species at risk occur as disjunct populations, most commonly around the Great Lakes region.
“Though many of these populations are considered regionally threatened because they harbour a relatively small number of individuals, they may not be considered globally threatened because individuals in the core set of populations (usually further south) are often abundant,” explains Claudia Ciotir, a co-author of the study and researcher in the Department of Environmental and Life Sciences at Trent University in Peterborough, Ontario. “This means that the core populations can downgrade the conservation status of the disjunct populations, but this downgrading assumes that the disjunct and core populations are closely related to one another.”
“Our findings provide evidence that the accumulated genetic novelty between disjuncts and their central populations is important and we recommend that genetic novelty should be factored into future conservation policies of Canadian disjunct populations. We show that comparative genetic assessments of disjunct and central populations can provide information that is critical to decisions about conservation management.”
This divergent evolutionary history may be relevant to a suite of 62 species of disjunct populations residing along the Great Lakes shores. The study “Evolutionary history and conservation value of disjunct Bartonia paniculata subsp. paniculata (Branched Bartonia) populations in Canada” was published today in the journal Botany. >
For more information about this study or to schedule an interview with the authors, please contact:Claudia Ciotir (co-author)
Canadian Science Publishing, an independent not-for-profit company, publishes the NRC Research Press journals but is not affiliated with the National Research Council of Canada. Papers published by Canadian Science Publishing are peer-reviewed by experts in their field. The views of the authors in no way reflect the opinions of Canadian Science Publishing or the National Research Council of Canada. Requests for commentary about the contents of any study should be directed to the authors.
Jenny Ryan | EurekAlert!
New type of photosynthesis discovered
17.06.2018 | Imperial College London
New ID pictures of conducting polymers discover a surprise ABBA fan
17.06.2018 | University of Warwick
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
Light detection and control lies at the heart of many modern device applications, such as smartphone cameras. Using graphene as a light-sensitive material for...
Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
15.06.2018 | Materials Sciences
15.06.2018 | Ecology, The Environment and Conservation
15.06.2018 | Power and Electrical Engineering