Samara Davis’s salamander eDNA project is a finalist in 2022 Genius Olympiad. Genius Olympiad is an international high school project competition about environmental issues founded and organized by Terra Science and Education and hosted by the Rochester Institute of Technology. The Olympiad will host projects in five general disciplines with an environmental focus.
The paper ‘Managing existing forests can mitigate climate change‘ published in the journal Forest Ecology and management discusses the advantages of better management of existing global forests to sequester carbon drawing on National Forest Inventory data from Scandinavian forests over the period 1960-2017.
Terry Collins’ press release contains a superb description of the paper as well as snippets of sound from a toadfish, piranha, gurnard fish, sea urchin, crab, and whale and information about 14 sound libraries.
PHE’s marine eDNA expert Mark Stoeckle comments on new papers on airborne eDNA in the video Scientists ID Dozens of Plants, Animals from Free-Floating DNA. In a trio of studies, researchers report capturing and analyzing airborne prepared for the magazine and website The Scientist. The report is spurred by widely reported terrific new papers measuring airborne DNA around zoos.
While presented as a first, this study of airborne DNA began in 2005 under the auspices of the Alfred P. Sloan Foundation. Paula Olsiewski and Jesse Ausubel recruited and managed a series of grants to explore the potential for airborne DNA studies. The largest grant went to the Venter Institute, which pioneered the techniques:
Among resulting publications: A metagenomic framework for the study of airborne microbial communities …, J Glass, MD Adams, R Friedman, JC Venter – PloS one, 2013 – journals.plos.org Understanding the microbial content of the air has important scientific, health, and economic implications. While studies have primarily characterized the taxonomic content of air samples by sequencing the 16S or 18S ribosomal RNA gene, direct analysis of the genomic …
Among other findings, while focusing on microbial aspects, the Venter team found more rat DNA circulating in the air of NY than human DNA.
We test modifications to lab components of an eDNA metabarcoding protocol for marine finfish. Higher-read (more abundant) species were amplified more reproducibly and with less variation in read number than were lower-read (less abundant) species. Our results support the unofficial standard collection volume of one liter for eDNA assessment of commonly encountered marine fish species. We conclude that eDNA rarity poses the main challenge to current methods.
For its 2021 Annual Review, the Andrew W. Marshall Foundation presented an hour-long seminar in which Jesse Ausubel speaks briefly on experimentation, Melissa Flagg on intellectual courage, and Dan Patt on mentorship, followed by Q&A. IGood session. Jesse’s 5 minutes of remarks, titled Don’t Do Anything for the First Time, begin 15 minutes into the session following Jaymie Durnan’s opening review.