Earthworms Found to Contribute to Agricultural Greenhouse Gas Emissions

Feb 08, 2013

California study finds earthworms increase greenhouse gas emissions

Often we hear about livestock agriculture contributing to greenhouse gas emissions and being bad for the environment. However, according to a California based study, there is a new culprit contributing to greenhouse gas emissions – earthworms.

The study was recently published in the scientific journal Nature; it demonstrates that worms may be a major contributor to greenhouse gas emissions by releasing carbon dioxide from the soil into the atmosphere.

According to the researchers, earthworms through the process of breaking down organic matter, may be responsible for contributing to up to one-third of carbon-dioxide emissions from the soil.

The study goes a step further and raises the question about “no-till” farming, which is an agriculture technique of growing crops without disturbing the soil through tillage. This increasingly popular agriculture technique is in essence preserving earthworm habitats and with the increase use of organic fertilizer may be exacerbating the greenhouse gas emissions process rather than mitigating it.

Video: Evolution of Beef Cattle Farming

The Clear Conversations podcast took to the road for a special episode recorded in Nashville during CattleCon, bringing listeners straight into the heart of the cattle industry. Host Tracy Sellers welcomed rancher Steve Wooten of Beatty Canyon Ranch in Colorado for a wide-ranging discussion that blended family history and sustainability, particularly as it relates to the future of beef production.

Sustainability emerged as a central theme of the conversation, a word that Wooten acknowledges can mean very different things depending on who you ask. For him, sustainability starts with the soil. Healthy soil produces healthy grass, which supports efficient cattle capable of producing year after year with minimal external inputs. It’s an approach that equally considers vegetation, animal efficiency, and long-term profitability.

That philosophy aligned naturally with Wooten’s involvement in the U.S. Roundtable for Sustainable Beef, where he served as a representative for the Colorado Cattlemen’s Association. The roundtable brings together the entire beef supply chain—from producers to retailers—along with universities, NGOs, and allied industries. Its goal is not regulation, Wooten emphasized, but collaboration, shared learning, and continuous improvement.