Evolution in an Urbanizing World
Urban environments, also known as concrete jungles, are the most rapidly growing type of environment of the current time. They force not only the landscape, but also its inhabitants, to adapt to the completely different rules that come with living in a human-made and human-populated area. The involvement of humans has historically been a very... Continue Reading →
Our typical urban rats, mainly brown rats (Rattus norvegicus), have undergone adaptations that enable them to thrive in urban environments. These adaptations distinguish urban rats from their wild relatives and highlight the impact of urbanization on species evolution. Genetic evolution and neighborhood adaptations In cities like New York City (NYC), with a rat population estimated... Continue Reading →
Pollinator decline is significant problem we are currently facing. Many studies have shown a drastic decrease of insects, including pollinators (Hallmann et al., 2017). Not only is this the loss of unique species and detrimental to ecosystem functioning, but pollination is also an ecosystem service important for production of many crops (Vanbergen et al., 2013).... 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 →
In urban ecology, a lot of attention has been paid to groups such as birds and trees and how they adapt to life in the human hive, but an often-neglected group are the lichens. These easily overlooked species are developing in their own way in the human dominated urban habitat. All lichens are a symbiotic... Continue Reading →
Urbanization has been ever increasing since the start of the industrial revolution and has shown no signs of slowing down. This has lead to cities growing bigger and bigger and thereby imposing new selection pressures on the animals in them. However, quantifying the effects of anthropogenic selection pressures has proven difficult for non-model species due... Continue Reading →
The human population around the world keeps growing. With that growth existing cities are expanding and new ones are being built. The urban landscape is a relatively new environment with different ecological and environmental conditions compared to rural areas. Environmental pressures in cities affect humans and wild animals alike, for example artificial light at night... Continue Reading →
Microorganisms are essential members of soil ecosystems, and they form complex, interactive networks [4] including communications and interactions with each other that are similar to human communities. The soil microbial community contributes to global ecological stabilization by providing various terrestrial ecosystem services, such as nutrient cycling and degradation of pollutants [4]. Moreover, the soil microbial... Continue Reading →
Artificial light at night (ALAN) is one of the most significant environmental changes of the past century.1 In 2020, there were approximately 361 million streetlights globally,2 and ALAN continues to increase at an alarming rate of 7%-10% per year.3 But how does this rapid expansion affect wildlife, particularly nocturnal creatures like bats? Research suggests that... Continue Reading →
In today’s urban environment, the constant presence of traffic noise is undeniable, infiltrating even the most hidden corners of the woods. Previous studies have shown that this anthropogenic noise negatively affects the welfare of both humans and other species. The fact that even unborn organisms experience negative effects is a worrying development, emphasizing the urgent... Continue Reading →
A number of years ago there was quite a lot of media attention regarding a possible case of in situ evolution of Culex pipiens form molestus in the London Underground metro system. This media buzz created speculation that this was a unique species that had risen during the over 160 year long existence of the... Continue Reading →
Have you ever seen a duck, goose, coot or any other waterbird laying long out on the ground or surface of the water? Do these birds look tired to you? If so, they might be suffering from botulism.Avian botulism, also known as Limberneck, is the most significant disease for migratory birds around the globe. Outbreaks... Continue Reading →
Darkness sets over India’s largest city. Of course, a city with a population exceeding 12 million people will never be truly dark. Or silent. Still, in those neighborhoods bordering Sanjay Gandhi National Park the vibrant city center feels far away. In this park the wild part of India is still visible as the densely vegetated... Continue Reading →
“Madrid declares war on plague of raccoon and parrot invaders” The Guardian (2013, July 22) “Toronto wages war on Raccoon Nation”The Canadian Press (2015, May 3) Many places have declared the war on raccoons in recent years. But is this war only making them stronger? Why declare war on racoons? The raccoon (Procyon lotor) originates... Continue Reading →
Proudly powered by WordPress | Theme: Baskerville 2 by Anders Noren.