Insects have some tricks to prevent getting too hot or too cold, but, like a sweater in a blizzard, they only work up to a point. These tricks contribute to what scientists call the thermal tolerance of an insect species.
Outside of cities, in natural environments, it has long been noted that herbivore abundance and feeding increases near the equator where the climate is warmer. But does this latitudinal-herbivory pattern observed in natural areas apply to cities?
Does it have to be one or the other? Conservation or pest management? People or birds? I don’t think so, and a new paper from our lab in PeerJ supports this perspective.
False oleander scale feeds on the leaves of hundreds of plant species. In areas where it is abundant, it's a major pest of ornamental plants in nurseries and landscapes.
Like we observed in Raleigh, we found that impervious surface was a robust predictor of tree condition, and that one set of thresholds could be used for red maples across the Southeast.
We are not the only scientists using cities as surrogates for climate change. However, this line of research is in its infancy. We conducted a literature review, led by postdoc Nora Lahr, to compile all the research we could find in which cities were used to predict the effects of climate change.
White peach scale (Pseudaulacaspis pentagona) is an armored scale common on many landscape plants and fruit trees. It has a wide host range including over a hundred plant genera such as Buddleia, Camellia, Clematis, Cornus, [...]
This is a guest post from our former student (now postdoc at Harvard) Emily Meineke. Through years of studying urban trees and the insects that eat them, we, the Frank lab, have discovered that warming [...]
A couple years ago I began warning about a new pest that was spreading throughout crape myrtle country. Now, the crape myrtle bark scale has arrived. From the severity of the infestation it looks like [...]
This is a guest post by PhD student Emily Meineke Coccophagus lycimnia freshly emerged from a gloomy scale. Photo: Emily Meineke If I’ve learned anything during my graduate career, it’s how to count scale [...]