Weber pushes natural resource funding in letter


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The Natural Resources and Outdoor Recreation Trust Fund would help protect Iowa’s natural resources (via Creative Commons). 

Julia Poska | January 3, 2020

Iowa Flood Center co-creator and research engineer Larry Weber began the new year with a letter to the editor in the Cedar Rapids Gazette urging Iowans to permanently fund the Natural Resources and Outdoor Recreation Trust Fund in 2020.

In 2010, Iowans voted to create the fund, officially amending the state constitution to create a source of permanent funding for protecting and improving the state’s natural resources and their associated benefits . The proposed 3/8 sales tax increase to create revenue for the fund, though, has still not been implemented.

“This funding would allow us to accelerate our conservation efforts to make meaningful improvements to address flooding and improve water quality,” wrote Weber, who has dedicated his career to Iowa’s water quality and quantity challenges.

“Together, we can maintain a strong agricultural economy while protecting our water and natural resources, and at the same time creating an environment where people are drawn to live, work, and recreate,” he concluded.

 

 

 

New UI research could help fight pollution with microorganisms


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Concrete and other surfaces are often covered in a thin film of pollution and pollution fighting bacteria and fungi (via Creative Commons). 

Julia Poska | December 20, 2019

As pollutants like particulates, PCB and pesticides filter out of the air, they often accumulate on surfaces like asphalt or building exteriors. When it rains, the pollutants can run off into water sources.

University of Iowa researchers recently published findings in Earth and Space Chemistry, revealing that a variety of bacteria and fungi live within the film of pollution on such surfaces. Some of those microorganisms are able to digest and break down the pollutants.

Researchers Scott Shaw (chemistry) and Timothy Mattes (civil and environmental engineering) intend to sequence the DNA of these organisms in the future. They will then be able to determine which could potentially be cultivated for fighting pollution in other areas, according to Iowa Now.

CGRER, the UI Center of Health Effects of Environmental Contamination,  the U.S. Department of Defense Army Research Office and the Nuclear Regulatory Commission funded this research.

2019 Iowa Climate Statement Video


Kasey Dresser| December 16, 2019

The Iowa Climate Statement video has officially been uploaded to our website. You can watch the video again here, or access it at any time under the Iowa Climate Statement tab.

The statement, released on September 18, warns Iowans and Midwesterners of sobering extreme heat projections for the region. Based on the most up‐to‐date scientific sources, the statement makes clear the urgency of preparing for dangerously hot summers in the coming decades.

Betsy Stone, Associate Professor in the Department of Chemistry at the University of Iowa, reads this year’s statement in the video above. Access the full written statement here.

ISU research complicates cover crops


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Cover crops hold onto soil and carbon during the off-season (via Creative Commons).

Julia Poska| November 13, 2019

Though cover cropping has proven advantageous for soil and water conservation in Iowa, the practice’s benefits to atmospheric quality may be negligible, new research from Iowa State University found.

When farm fields are left bare during the winter and spring, wind and water transport soil and nutrients off the land and into streams and rivers, degrading both the field and water quality. Exposed soil typically releases carbon into the atmosphere at increased rates compared to planted areas, contributing significantly to climate change.

Cover cropping involves planting alternative crops like rye or clover to cover and nourish the land throughout the off-season. The conservation practice holds soil in place, pulls atmospheric carbon into plant material and adds carbon back into soil upon decomposition. Sequestering carbon in plants and soil is key to combatting climate change.

That carbon may not remain in the soil for long, however. The new study, published in Global Change Biology Bioenergy,  found that the added soil carbon stimulates microbes in the soil that emit carbon dioxide back into the atmosphere as they digest the organic matter.

The research — conducted by ISU assistant professor of ecology, evolution and organismal biology Steven Hall and grad student Chenglong Ye —  highlights the need for a variety of solutions for the planet’s numerous natural resource problems. While cover crops are a proven protectors against water pollution, we will need to implement other strategies to make farming carbon neutral, too.

UI offers free lead testing kits to state residents


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Faucet from Creative Commons. 

Julia Poska | October 16, 2019

Iowa residents can improve their drinking water and support environmental research by participating in the University of Iowa’s “Get the Lead Out” initiative through Oct. 26.

The program offers free lead testing kits to Iowa residents outside of Johnson County. The UI Department of Civil and Environmental Engineering; IIHR—Hydroscience and Engineering; and Center for Health Effects and Environmental Contamination are leading the initiative to collect information for a new database of lead levels in drinking water across Iowa.

Because lead, especially toxic to children, was once used commonly in household products, it may still be present in aging household plumbing across the state.

Interested households can email get-the-lead-out@uiowa.edu  to request and receive three bottles (and instructions) for collecting tap water samples.  After sending samples back to the university for testing, they will receive their results, an explanation and suggestions for improvement (such as adding a filter to the faucet).

Johnson County residents can contact any DNR-certified testing lab, such as the State Hygienic Laboratory, to acquire testing kits.

 

 

EPA announced a ​new proposal to update the Lead and Copper Rule


 

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Irrigation (flickr/UTDNR)

 

Kasey Dresser| October 14, 2019

After nearly 30 years of a stagnant Lead and Copper Rule, the Environmental Protection Agency announced a new proposal to update the regulation. The new regulations are aimed to increase lead identification, sampling, and strengthen treatment by increasing the number of hours a service provider needs to notify a customer that their water is contaminated with lead.

The Natural Resources Defense Council and other environmental activists have expressed concern that the new regulation allows communities more to time to replace the lead service lines, indicating these regulations may be weaker than the previous. The new proposal also establishes a lower “trigger level” of lead to 10 parts per billion from 15 parts per billion. The main counterargument is health experts have never established that any level of lead can be sustainable. “Even low levels of lead can cause harm to developing brains and nervous systems, fertility issues, cardiovascular and kidney problems, and elevated blood pressure. Pregnant women and children are particularly vulnerable,” the NRDC said in a statement.

The last major lead pipe exposure in Iowa outbreak was December 2016. More than 6,000 Iowans were exposed to contaminated water for over six months. The issue brought up major incongruency in the method to solve the problem between University of Iowa engineers or Iowa Departments of Public Health and Natural Resources.

Iowa State research proposes ‘sustainable intensification’ of Iowa drainage network


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Drainage tile helps keep farm fields dry, but Iowa’s system needs a more sustainable upgrade (via Creative Commons).

Julia Poska | October 9, 2019

Agronomy researchers at Iowa State University have proposed ideas for an ambitious and much-needed update to Iowa’s agricultural drainage system. Their study makes suggestions for mitigating the effects of altered precipitation patterns due to climate change while reducing pollution to air and water.

The concept of “sustainable intensification” (the authors define this as “producing more food from the same amount of land with fewer environmental costs”) is at the core of the research. ISU agronomist Michael Castellano led the study in partnership with University of Kentucky and the Swiss Federal Institute of Technology ETH-Zurich.

Artificial drainage systems are comprised of underground pipes, tiles and drains that move water off farmland, discharging it into ditches that flow into natural surface waterbodies. Without this network, most of Iowa’s land would be too waterlogged to farm, but drainage systems increase runoff of nutrient and bacterial pollution from fields into waterways.

The increasing frequency of both intense rain events and draught in Iowa due to climate change is also putting extra pressure on those systems, which were designed before Iowa agriculture became so intense.  The study, published in Nature Sustainability, describes several solutions. “Controlled drainage,” or installing gates that can temporarily open/close at the ends of drains, could allow farmers to increase drainage during wet springs and retain more water during dry summers.

Installing narrower, shallower drains could further reduce nutrient concentration in drainage water, the authors claim. They say it could also reduce needed fertilizer inputs and decrease greenhouse gas emissions from the soil.

The study also describes the need to increase on-farm conservation practices, like returning some farmed land to wetland, in conjunction with updating infrastructure.