There’s been an exciting study making the rounds that actually has positive findings. The study, authored by Ceballos et al. (2021), was published in the journal PLoS ONE in October. It found that jaguar populations may actually be growing in Mexico.
I have just read a study that was published last year in PLOS ONE. It examined the effects of road development on jaguar conservation in Ecuador, and found, not surprisingly, that more roads equal fewer jaguars.