On The Radio- Chimpanzees feel anxiety too


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(flickr/Aaron Logan)

Kasey Dresser| July 14, 2019

This weeks segment looks at how social stress manifests in chimpanzees. 

Transcript: 

Chimpanzees react to social stress, just like humans.

This is the Iowa Environmental Focus.

Behavioral dominance is the hierarchical relationship between members of a community established through force, aggression or even submission. In many animal species, dominant individuals have health and fitness benefits, more than their peers. However, a new study from the Max Planck Institute for Evolutionary Anthropology uses chimpanzees to study some costs of behavioral dominance. 

In a community of chimpanzees, there are periods where the social dominance hierarchy shifts and there is competition among the males. Surprisingly, a majority of chimpanzees become less aggressive during that time due to stress. The senior author for the study, Roman Wittig, explained that chimpanzees are territorial but employ conflict management to diminish the risk of injuries. 

This reaction is not only behavioral. The authors collected urine samples and discovered high cortisol levels, indicating high stress, during such periods. The study showed that aggression alone is not a good indicator of competition between chimps.

For more information, visit iowa-environmental-focus-dot-org.

From the UI Center for Global and Regional Environmental Research, I’m Sara E. Mason.

 

 

 

 

On The Radio- Carbon dioxide’s effect on record high temperatures


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Sunrise (flickr/uditha wickramanayaka)

Kasey Dresser| July 8, 2019

This week’s segment looks at the influence of carbon dioxide on the record high-temperature levels this year. 

Transcript: 

Ocean carbon dioxide levels hit a new record early this month, as it was 84 degrees near the Arctic Ocean.

This is the Iowa Environmental Focus. 

Temperatures rose to 84 degrees in the northwest of Russian near the entrance of the Arctic Ocean, a rural area in eastern Russia where the average high temperature is around 54 degrees this time of year. 

Many locations around Russia set record high temperatures. This particular heat wave, a manifestation of the arrangement of weather systems and fluctuations in the jet stream, fits into what has been an unusually warm year across the Arctic and most of the mid-latitudes.

In the meantime, the carbon dioxide concentration in the atmosphere surpassed 415 parts per million for the first time in recorded history — the highest in at least 800,000 years, and possibly the highest levels in over 3 million years. Carbon dioxide levels have risen by nearly 50 percent since the Industrial Revolution.

These numbers altogether serve as indicators of the damages done by modern civilization to the environment and the contributions humans have made towards climate change.

For more information, visit Iowa-environmental-focus-dot-org. 

From the UI Center for Global and Regional Environmental Research, I’m Sara E. Mason. 

Farms no longer have to report air emissions caused by animal waste


Photo from Pexels.com

By Julia Shanahan | July 5th, 2019

The Environmental Protection Agency finalized a rule that will exempt farms from reporting air emissions caused by animal waste. 

Reporting will still be required for the release of animal waste into water. This exemption is in the form of an amendment to EPCRA section 304, where its main purpose is to alert emergency responders of dangerous emissions, like chemical leaks, so they can potentially evacuate a community or alert locals to seek shelter. In a news release, the EPA said this final rule will ensure that “emergency planners and local responders receive reports that focus on these kinds of emergencies.”

This new rule also applies to decomposing animal waste. All other hazardous emissions above a recommended threshold will still need to be reported. 

Animal waste emissions into the air can increase the risk for respiratory health issues like asthma, and also contribute to climate change. A 2013 report from the UN Food and Agriculture Association said that 7.1 gigatons of CO2 emissions can be attributed to the global livestock sector annually.

Iowa is the country’s leading producer of animal and human waste. The Iowa Environmental Focus reported on research engineer Chris Jones’ March study that calculated how many people each livestock group accounted for in terms of the amount of waste it produces, and called it Iowa’s “real population.”

While Iowa has a population of just over 3 million people, this is what Jones found in his March study and lists in his blog:

  • Iowa hogs: equivalent to 83.7 million people
  • Dairy cattle: 8.6 million people
  • Beef cattle: 25 million people
  • Laying chickens: 15 million people
  • Turkeys: 900,000 people

On The Radio- Increasing Mass Extinctions


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The Iberian Lynx: a cat species from Spain. There are only a few hundred left in the world. (flickr/Mario Nonaka)

Kasey Dresser| June 24, 2019

This weeks segment looks at how human beings are causing mass extinction of over one million species

Transcript: 

Earths landscapes are changing and about one million species are in danger.

This is the Iowa Environmental Focus.

With the human population passing seven billion, homo sapiens are pushing animals out of the picture in need for more space.

The sharp decline in species is likely to occur by 2050, and it will affect biodiversity. Humans are not the only problem that animals have to face, but global warming as well, a natural result of human treatment towards the environment. 

Nature provides trillions in non-monetized saving that benefits human beings every year. If wildlife and tropical rain forests cease to exist, our medicine would change drastically. Over 23 percent of the planets land area is being harmed because humans are producing more food than ever, causing land degradation. 

Our previous miniscule efforts of creating wild life refuges and efforts to protect individual species will no longer be sufficient.  Scientists have stated that nations need to step up in their efforts to protect natural habitats.  

For more information, visit Iowa environmental focus dot org.

From the UI Center for Global and Regional Environmental Research, I’m Sara E. Mason.