Evolution in an Urbanizing World
A painted lady (Vanessa cardui), a species of butterfly common in urban habitats (Photo credit: Jean-Pol GRANDMONT) The urban heat island effect is a well-known consequence of urbanization whereby temperatures in cities are higher than those in surrounding natural areas. One wrinkle in the heat island effect is that the increase in temperatures is not... Continue Reading →
Urbanization has repeatedly been shown to negatively impact wild animals and is a particular concern for wild birds. Fortunately, some species are able to flexibly alter their behavioral phenotypes and adapt to the busy life in the city. Resource competition may be higher in urban environments, thereby selecting for more aggressive behaviors in city-slicking birds.... Continue Reading →
Have you ever stopped to look at the city lights at night? Have you ever wondered what impact these lights have on wildlife? Chris Thawley, Zach Forsburg, and Krystie Miner all asked this question in their research on artificial light at night, or ALAN. After exploring how ALAN, affected anoles in a laboratory setting,... Continue Reading →
With this gorgeous Tampa weather, the last thing anyone at SICB 2019 wants to think about is snow and ice. Everyone except for Megan Kobiela, a PhD candidate from University of Minnesota, who studies the effects of deicing salt on monarch butterflies. By using salt to keep roads safe in the winter, humans have dramatically... Continue Reading →
What consequences does the urban heat island effect have for animals that live in cities? How might increased heat interact with other environmental factors, such as water availability, to affect survival or fitness of animals exposed to these higher temperatures? Dustin Johnson, a masters student in Zach Stahlschmidt’s lab at University of the Pacific chose... Continue Reading →
Thanks for following Life in the City in our first year. On this last day of 2018 we (the editors: Elizabeth, Kristin, Lindsay) figured we would take a moment to reflect on the first few months of the blog and urban evolution research over the past year. The Blog Since launching on September 28, we've... Continue Reading →
From the Natural History Museum in London to the Muséum National d'Histoire Naturelle in Paris to the American Museum of Natural History in New York City, pretty much every major city has a science museum that houses collections of animals, plants, and fossils from around the world. The tragedy of the fire that devastated the... Continue Reading →
The Smithsonian Channel and Day's Edge Productions have put together a fantastic mini-series and a full-length documentary on anole evolutionary research. Episode 7 of the miniseries and part of the full-length movie feature urban lizards and urban evolution research by myself and my collaborators, Shane Campbell-Staton (UCLA) and Jason Kolbe / the Kolbe lab (U. Rhode Island). Check out... Continue Reading →
The annual meeting of the Society for Integrative and Comparative Biology (SICB) is almost here! From January 3-7 biologists will convene in Tampa, Florida to share the latest and greatest from a broad range of research areas. Urban evolution talks have a strong showing at the meeting this year, and we would like to hear... Continue Reading →
Urbanization impacts species in many different ways, including behavior, morphology, and physiology. Although many of the documented phenotypic shifts show evidence of a genetic basis, the actual genetic differences and the genes they occur in are unknown for most urban adaptations. In fact, it seems we know very little at the genetic level regarding which... Continue Reading →
No matter what career stage you are in- maybe you just stumbled upon this blog, or maybe your works are being cited in it- vision is arguably the most critical sense for anyone intent on becoming a scientist. We are constantly reading, writing, attending seminars, peering through microscopes, and using our eyes in countless other... Continue Reading →
Darwin's finches in the Galapagos are the poster children of adaptive radiation. These birds have formed many species that differ in their beaks. The size and shape of beaks make them uniquely suited to take advantage of different food resources. Hard big beaks are great for eating large hard seeds, small beaks for small seeds.... Continue Reading →
One way that animals may adapt to urban environments is by expanding their diet to include anthropogenic food, as discussed in the earlier post “Is Anthropogenic Food Waste Driving the Evolution of Urban Animals?”. But how can we tell if urban animals are actually consuming enough anthropogenic food to change physiology and drive evolution? We... Continue Reading →
As the field of urban ecology and evolution advances, one major issue consistently jumps out at me: the lack of information on basic ecology and natural history of many species in urban environments. Such information provides a background for hypothesis driven research, a context for interpreting results, and a comparative baseline. Evolutionary studies, particularly those framed... Continue Reading →
Above: Fig. 2 from Rivkin et al: many species have been shown to adapt to cities. Thompson et al. ask whether or not this could lead to speciation. Organisms that persist in urban environments are subject to novel selective pressures as they exploit this novel niche space. We now know that this ecological shift can lead to... Continue Reading →
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