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.
It is nice to be reminded of why I am an ecologist, why I study trees, and why I care about helping trees grow in cities. Photosynthesis is cool!
Cities are hot and often dry. This makes the plants dry and unhealthy. But what about the animals? They can gain water by ‘drinking’ from moist soil or dew, or by eating plants that are mostly water. But what if they can’t find enough to drink?
A mystery began to nag at me. Some trees in the hottest areas within cities were covered in insect pests and still looked vigorous, while other trees with the same pest densities withered.
Urban yards can be tough for bees. There are often not enough flowers, or the wrong kinds of flowers, so people compensate with pollinator gardens. However, cities are also hot, due to impervious surfaces and the urban heat island effect.
Insects experience the environment at much smaller scales than people do. Some insects may not move more than a block in their lives. We figured bees that can't tolerate heat won't be found in hot parts of town and did a study to determine if that's true.
Say you are on a road trip. You fall asleep, head lodged against the (hopefully passenger side) window. The last thing you see before drifting off is a string of stores: Starbucks, Target, Bed Bath [...]
Honey bee. Photo:SDF People have domesticated many different plant and animal species to utilize for food, fiber, or other resources. To domesticate a plant or animal people deliberately breed individuals that have valuable [...]
A spider in the family Anyphaenidae has made its home on a twig infested with scale insects. Photo: Emily Meineke, Harvard University I think by now most people accept that we can’t hope [...]