Evolution in an Urbanizing World
Urbanization is happening all over the world. Everywhere you look, you can see that cities are expanding and new cities are being built. This is often at the expense of nature. There is not a lot of room for vegetation in cities and more and more existing vegetation and farmlands are being turned into urban... Continue Reading →
With the rapid expansion of the city, the degradation of the natural environment has gradually aroused widespread concern in society. In recent years, the saguaro cactus (Carnegiea gigantea), one of the most iconic plants in the Sonoran Desert, has attracted the attention of ecologists because of its declining population and wildfires. They began to think... Continue Reading →
Did you know that we are currently witnessing the largest extinction event on Earth in 250 million years? In this context, let’s delve into the crucial role of insects, even in our bustling cities. Contrary to what their small sizes might suggest, insects play a crucial role in our ecosystems. Without them, terrestrial and freshwater... Continue Reading →
Urban tolerance is phylogenetically constrained and mediated by pre-adaptations in African bats G.E. Marsden, D Vosloo, M.C. Schoeman Abstract With increasing urbanization, particularly in developing countries, it is important to understand how local biota will respond to such landscape changes. Bats comprise one of the most diverse groups of mammals in urban areas, and many... Continue Reading →
A variety of species – animals, plants, fungi, microbes – share our cities with us. Some we love, some we hate, and some we hardly notice. Some of these species existed naturally before we built cities. Some were obliterated during urban construction but have since re-entered the city. And others have been purposefully or accidentally... Continue Reading →
Heavy metal pollution is a widespread threat to urban ecosystems. Although many types of heavy metals are required by organisms at trace levels, the environmental availability of heavy metals is increasing to potentially toxic levels due to human activities such as mining, industrial combustion, and automobile use. A key goal for ecotoxicologists, evolutionary biologists, and... Continue Reading →
Many organisms seem to do poorly in urban areas, and it is unclear which organisms will become extirpated in cities. Typically, organisms that are experiencing population declines are ones that we would think are negatively impacted by urbanization. However, this may not always be the case. Recently, Ziege and co-authors studied populations of the European... Continue Reading →
Most of the time we expect pigeons or other common birds to be spotted on the power lines and poles. Sometimes, we get a rare gem, the bald eagle! We have shown you a number of birds in these "Urban Observation" posts. This one is super majestic for sure. But sadly, many birds have... Continue Reading →
For most of us, our interest in urban ecology is rooted in the desire to better understand and conserve biodiversity. Once researchers better understand the science behind issues facing our urban species, the next step is engaging the wider public on how to beset conserve these species. This theme was present almost every talk I... Continue Reading →
For those of you who follow us and live in the Greater Toronto Area (GTA), I'm giving a talk at the Riverwood Conservancy this Saturday, April 20th at 9:30 am. You can register for the event here. I will be talking about how urbanization can influence evolution for a lot of different organisms, including plants... Continue Reading →
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