Iowa Learning Farms hosted webinar on Wednesday, September 16 about monarch butterfly conservation efforts in Iowa. During the webinar, Steve Bradbury, professor in the Departments of Natural Resource Ecology and Management and Entomology at Iowa State University explained monarch life cycles, migration and population decline. Up to 50% of the population that overwinters in Mexico comes from the corn belt of the US, making it critical to conserve and establish additional monarch habitat in Iowa.
Although year-to-year variability of the the monarch population is to be expected, the overall trend is declining. The concerning decline has been caused by extreme weather, deforestation in Mexico (which has been stabilized), and habitat loss (milkweed and other nectar resources) in the upper Midwest. In order for the population to be sustainable and able to withstand extreme weather events, it needs to occupy six hectares of the forest in Mexico. In order to achieve this, 1.6 billion additional stems (of milkweed and nectar resources) need to be established in the upper Midwest.
The Iowa Monarch Conservation Consortium was formed in 2015 to determine Iowa’s part in the establishment of habitat in the upper Midwest. Significant habitat needs to be established in Iowa and the conservation strategy for Iowa breaks out how many acres of habitat need to be established and opportunities to do so without taking acres out of crop production. Grass dominated sites are areas where there is opportunity to establish monarch/pollinator habitat and research is being done on the best way to transform these sites. Bradbury shared lessons learned from the demonstration sites during the webinar.
To learn more about monarchs and monarch conservation efforts in Iowa, watch the full webinar here!
Join us on Wednesday, September 23, for a webinar titled “Iowa Flood Center Floodplain Mapping Programs” presented by Witold (Witek) Krajewski, Director of the Iowa Flood Center.