Evolution in an Urbanizing World
Within cities, the number of trophic levels present in the community can change when animals migrate there. Smaller predators can end up at the top of the trophic chain or a different species, like the domestic cat, becomes the apex predator of the city. How are apex predators like raptors thriving or at least surviving... Continue Reading →
Cities are becoming more and more grey, with less and less living biomass. The consequence is that there is not enough natural nesting material available for the urban birds. These birds adapt to use alternative anthropogenic nesting materials. Examples include synthetic twine, string, and rope or artificial plants made of plastic (Hiemstra et al. 2021).... Continue Reading →
An introduction to the city spider Spiders are the most diverse and abundant terrestrial predators on earth. This group of species is, in turn, a crucial contributor to the earth's ecosystems as we know them: they control insect populations directly, which indirectly changes plant diversity and productivity. Since many of the earths ecosystems are under... Continue Reading →
Cities are a special environment regulated by humans: planted green spaces, paved streets, large buildings, constant light and traffic. Some animals like meadow birds have disappeared from these landscapes, but other animals have not. Trashcans, littering, bird feeders, food laying around restaurants and cafés all attract animals to the cities. This leads to an increase... Continue Reading →
Some fries left on the ground, a half-eaten sandwich, or some breadcrumbs kindly given by someone on a park bench. Pigeons (Columba livia) in the city don’t shy away from eating human-derived foods. Although most pigeons are eager to eat our food scraps, this behaviour has been linked to a likely downside: the urban lifestyle... Continue Reading →
When thinking about a city at night, chances are that you include some twinkling streetlights in your mental image. Billboards, streetlamps, and neon signs are no novel presence to city dwellers. These light sources are in technical terms called artificial lights at night, or ALAN for short. While thinking about a city at night can... Continue Reading →
In the heart of the city, dominated by human-made material, animals face more than cars and concrete—they face humans. And to survive, some of them have developed a surprising skill: reading human behaviour and recognizing people. They learn who feeds them, who ignores them, and most importantly, who poses a threat to them. They need... Continue Reading →
Increasing artificial light In recent decades, the urban population has grown exponentially worldwide, with the expectation that the urban population will continue to increase the next decades. As cities expand, so does the reliance on artificial light sources to illuminate the night. This increases the visibility for humans when it is dark, but it can... Continue Reading →
As urbanization continues to reshape landscapes, its effects on wildlife have become a subject of growing concern. In the unique context of Cuba, a recent study focused on an endemic lizard species, Anolis homolechis, found in both natural and suburban environments. This in-depth study relied on adapted tracking methods deployed over several years and explored... Continue Reading →
[embedyt]https://www.youtube.com/watch?v=obHtOIJrwh8[/embedyt] Our perceptions of wildlife and nature are shaped by the media which highlights. The mold has been set by great figures like David Attenborough, with his memorable narrative voice. However, these documentaries only explored 'pristine' landscapes in far away lands, while ignoring the creatures that must contend with the Urban Jungle. In my first... Continue Reading →
Skyscrapers as Ecological Traps of the Spotted Lanternfly (Lycorma delicatula) (Hemiptera: Fulgoridae): Preliminary Observations Kenneth D. Frank & Gregory W. Cowper Abstract Since its introduction to North America from Asia in 2014, the spotted lanternfly has emerged as a pest in rural and suburban settings. In downtown Philadelphia we found adults of the spotted lanternfly... Continue Reading →
While I was out birding on Governor's Island, My friends and I came across this old traffic cone. It stood out to me as a sore thumb, a bright red monolith in a lawn of green grass. My curiosity led me to peek inside, and lo and behold! There was a Common House Spider (Parasteatoda... Continue Reading →
“There are ecologists in urban areas, and then there are urban ecologists” - Dr. Chris Schell This point made by my advisor (Dr. Christopher Schell) creates a clear distinction that there are urban ecologists who do not fully integrate social processes (nor the full human, e.g., perceptions, culture) in their studies. And there are urban... Continue Reading →
Urban ecology, although a burgeoning field, is becoming massive. In this field, there is much to think about when developing a question investigating the effect of “urbanization” on a particular species. Even within “urbanization” (which most urban ecologists recognize as just semantics and not a clear definition), there are many quantifications for this (see Moll... Continue Reading →
Connectivity in the Urban Landscape (2015–2020): Who? Where? What? When? Why? and How? Todd R. Lookingbill, Emily S. Minor, Charles S. Mullis, Gabriela C. Nunez-Mir & Philip Johnson Abstract Purpose of Review This review uses a combination of narrative and systematic review techniques, including automated content analysis (ACA), to summarize the last 5 years of research... Continue Reading →
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