A new-to-science carnation species from Hawaii is likely the first plant to be identified and collected using drone technology.
Check out the video below to see how it happened!
Published in the open-access journal PhytoKeys, the discovery was facilitated by the National Tropical Botanical Garden‘s (NTBG) botanical drone program, which deploys unmanned aircraft to explore remote cliff environments.
Via drone photography, researchers spotted Schiedea waiahuluensis growing on steep, inaccessible cliffs in the Waiahulu region of the island of Kauai. To gather samples, they suspended ‘the Mamba’ – a remote plant collection device – from a drone and used it to grab, cut, and collect the plant for study.
The new species belongs to a well-studied Hawaiian lineage in the carnation family. Its genus, Schiedea, consists of 36 species spread across the Hawaiian Islands, with 12 species found only on Kauai.
Schiedea waiahuluensis grows only on the dry cliffs of Waiahulu, with an estimated population of around 345 individuals, primarily growing on bare rock surfaces in small pockets of soil.
Their fragile habitat is under threat from invasive plant species and feral goats, making conservation efforts crucial. Researchers are planning further studies to assess the full distribution and conservation needs of the species.
“S. waiahuluensis has a combination of traits that would have been very difficult to predict, and upended our notions about diversity in Schiedea, even after decades of research on this genus.”
Authors Stephen Weller and Ann Sakai from the University of California
Following more than 40 years of research on Schiedea on Kauai, this finding demonstrates the potential for future discoveries of native plants across the Hawaiian Islands through drone technology, and highlights the burgeoning role of drones in advancing conservation efforts and preventing plant extinctions.
“The new development of the NTBG drone program provides a major new tool in biodiversity research that has allowed for better assessment of species distribution and status as shown by drone missions on the inaccessible cliffs of the major canyons on Kauai.
It has revealed populations of species presumed extinct such as the recent rediscovery of Hibiscadelphus woodii, a relative of Hibiscus, mapped populations of Schiedea waiahuluensis, and collected seeds via drone for establishment of a conservation collection of this species.”
Lead author Warren Wagner, a research botanist at the Smithsonian Institution
While drone-technology innovators were not likely thinking about botany, Schiedea waiahuluensis serves as a reminder that science can benefit from technologic advancements from seemingly unrelated fields.
For another ‘miraculous’ discovery, read our blog on Amalophyllon miraculum, an incredible little plant from Ecuador!
Original study:
Wagner WL, Weller SG, Sakai AK, Nyberg B, Wood KR (2024) Schiedea waiahuluensis (Caryophyllaceae), an enigmatic new species from Kaua’i, Hawaiian Islands and the first species discovered by a drone collection system. PhytoKeys 247: 111-121. https://doi.org/10.3897/phytokeys.247.130241
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