Publications by authors named "Joanna Elmore"
Predation is an important species interaction to monitor when assessing an invasive species' impact on a particular ecosystem, but it can be difficult to observe and thus, fully understand. On Kaua'i island, invasive Barn Owls (Tyto alba) predate native seabirds, but difficult terrain in this region and the cryptic nature of owl predation make traditional monitoring of predation quite challenging. Using Barn Owls collected as part of removal efforts on Kaua'i and Lehua islands, we conducted DNA metabarcoding of owl digestive tracts to detect and determine seabird species they predate.
View Article and Find Full Text PDFTranscriptomic evidence indicates that montane leaf beetles prioritize digestion and reproduction in a sex-specific manner during emergence from dormancy.
Kevin T Roberts Jonathon H Stillman Nathan E Rank Elizabeth P Dahlhoff Ryan R Bracewell Joanna Elmore
Comp Biochem Physiol Part D Genomics Proteomics
September 2023
Article Synopsis
- Many organisms, like montane leaf beetles, enter dormancy during winter to conserve energy and resources by lowering their metabolic rates.
- Spring emergence from dormancy involves a quick shift in gene expression, where beetles increase digestion and nutrient processing while reducing reliance on stored fats, with females prioritizing reproductive processes earlier than males.
- Experimental manipulation of snow cover shows that winter conditions significantly influence the timing of these processes, possibly exacerbating the negative impacts of reduced snow cover in mountainous regions like the Sierra Nevada.