Stories tagged Urban Ecosystems

Nov
04
2010

You think you’re safe from the dangers of the wild just because you live in a city? This video will change your view. It was shot by a guy named Craig Kuberski, who lives within the city limits of St. Paul, MN. I know some of you were hoping you'd get to see a rogue cougar or bear mauling innocent urbanites or eating their pets, but that’s not the case here. It’s just a couple of bucks on the town and in a rut trying to catch some city girls' attention.

Rutting period is the mating season for many ruminants, (i.e. mammals like moose, caribou, bison, and deer). The rut is set-off by the shortening of daylight hours during autumn and in the case of white-tail deer (Odocoileus virginianus - which I’m pretty sure these are) can last for one to three months. During that time, male deer get all goofy and twitterpated, rubbing their antlers against trees, rolling in the dirt or mud, or battling each other – as seen in this video. Rutting season is the best time to hunt for them, and the easiest time to hit them with your car, although I don’t advise you do the latter.

As you may notice, Mr. Kubinski posted two buck fever videos on YouTube. I’ve only used the second here because it’s the better of the two, focus-wise, But if you’d also like to watch Part I, there you have it. KARE 11 also ran a story on it.

Apr
16
2010

Is this house a biogeochemical hotspot?
Is this house a biogeochemical hotspot?Courtesy monkeyc.net
To ecologists who study the environment, cities and suburbs are fascinating places. For one thing, they're full of people, and people take-up space, consume materials and energy, and create waste every single day. When people do this together in concentrated areas like cities and suburbs, they create what scientists call "biogeochemical hotspots" - places where chemical and energy reaction rates are much faster than in surrounding areas.

Individual houses are also hotspots. A group of scientists at the University of Minnesota, led by researchers Sarah Hobbie and Kristen Nelson, are trying to understand more about urban ecosystems and how chemicals and energy cycle through different people's homes.

They've begun to study a small group of people whose homes are here in Minnesota - asking them questions about their behavior and taking surveys and samples on their property.

What they've found might surprise a few people. It turns out that not everyone uses energy and chemicals the same way. Small numbers of individuals and families consume and waste much more than others - creating a bigger footprint in their ecosystem.

So who are these disproportionate polluters? There is a lot that scientists still don't know, especially about why people make the choices they do, but one thing seems to be clear - generally speaking, the more money that a family makes, the bigger their ecological footprint.

These bigger impacts come from a few behaviors that wealthier Americans tend to exhibit more than their less-wealthy counterparts. Flying in airplanes, buying a much larger home, having more pets and driving a car more often all contribute to a family's impact on their ecosystem.

While studying the role individuals play in urban ecosystems, another thing these scientists found to be true was that small individual actions - for example, turning down the thermostat in the winter just a few degrees, or using less chemicals on lawns, did have a significant impact on the environment.

You can see a recording of two of the researchers involved this study .