Saguaros require a specific sequence of monsoons and dry spells to blossom and reproduce. Due to climate change-related shifts in weather conditions, the mature individuals are no longer reproducing. They are dying without being replaced.
The IUCN currently lists them as “least concern” but also “declining” with the most recent assessment from 2017. I wonder if this will be changing soon?
When I teach my invertebrate zoology course, we talk only very briefly about glass sponges, despite the fact that they’re super cool.
In this new paper the authors describe some incredible glass sponge #biodiversity off the coast of New Zealand. They used standard methods (morphology, genetics). But they also used phylometabolomics – that is, they successfully classified specimens based on metabolites in their tissues. That’s new to me!
All of the detected bats (some rather rare) are known from previous work in the area. The authors also note non-target eDNA that likely drifted into some roosts (e.g. cow eDNA). However in some cases the non-target eDNA detections likely were from species actually associating with bats.
eDNA is a great method for detecting hard-to-access species, and this is a good demonstration of its utility.