The first map tracking Connecticut’s increasing beaver population was part of a research project in the University of Connecticut’s Department of Natural Resources and the Environment. Evan Zocco, the research assistant who conducted the project, says the map can help solve both property management and climate mitigation issues.
One reason the map has such wide applicability is because beavers are categorized as a “keystone species” with profound influence on the ecosystem, according to the project’s website.
“Beavers are considered keystone species because of their unique ability to create more diverse habitats than those that previously existed,” the website stated. The creation of this diversity was analyzed in the research project by distinguishing the “stages of sites” in beaver habitats.
The first stage in the website’s breakdown was the construction of a dam to block flowing water. Beavers stop streams because they need to redistribute that water to create their habitat. Dams create ponds where beavers build lodges in the middle to protect against predators, according to the project’s introduction.
Connecticut’s landscape is abundant with optimal areas for beavers looking to build dams, but that becomes a problem in close proximity to human structures, according to the study. The security that dams grant beavers is not extended to humans because dams flood the surrounding area. This increases the likelihood of water damage in residential areas close to active beaver sites, according to Zocco’s research.
Zocco gave some examples behind the map’s practicality by highlighting at-risk residential areas that he found using the resource he created. The website highlights 15 houses that are particularly close to beaver structures in the towns of New Milford, Sherman, Ashford, Colchester and Killingworth.
Connecticut home flood repair costs are some of the highest in the country, according to a report published earlier this year by the National Resources Defense Council (NRDC). A contributing factor to these costs is the lack of required disclosure about flooding in the real estate industry. In Connecticut, sellers are only required to warn buyers when a home is in a flood hazard area, not if there was any previous flood damage, according to NRDC lawyer Joel Scata.
“This difference in flood costs highlights the importance of flood disclosure laws so that home buyers have a clear picture of the potential burden from flooding,” the NRDC report stated. While mapping beaver activity won’t tell buyers whether there were any previous floods, the information in the map can help homeowners avoid some financial burden, according to Zocco.
“While having a stream on a property can enhance its aesthetic appeal, it also brings the potential for unintended destruction if beavers choose to build there,” according to Zucco’s website. “Awareness of these risks is crucial for property owners to implement preventative or mitigative measures effectively.” The beaver site map used Zocco’s research to ensure the public has accessible resources informing about the risks.
Not all beaver activity was found to be financially destructive, according to Zocco’s study. While the first stage of a beaver site raises concern in human-beaver relationships with flooding, later stages of beaver activity compel our co-existence through carbon dioxide mitigation, according to the project’s website.
The excess water in beaver dam floods alters the plant life in a pre-existing area to be more suitable for smaller aquatic life and nutrient rich soils. As beavers move and respond to changes in biodiversity, the initial beaver pond evolves into a wetland, according to the project website.
Wetlands act as carbon sinks, which absorb more carbon in the atmosphere than they release, according to Client Earth. The climate is warming in accordance with rising atmospheric carbon dioxide levels, which places importance on carbon sinks like wetlands, according to the National Oceanic and Atmospheric Administration.
“Beavers naturally generate these ecosystems as a byproduct of their activities,” the website stated. “In contrast, man-made wetlands often fail to replicate the effectiveness of their naturally occurring counterparts.” Research by the State of Washington’s Department of Ecology reassures Zocco’s claim.
“Younger freshwater wetlands and disturbed wetlands can emit carbon until they develop sufficiently to sequester carbon,” Washington’s Department of Ecology reported. “The turnover time from a wetland being a carbon emitter to a carbon sink can take 61 to 14,000 year.”
It took Evan Zocco and advisor Dr. Chandi Withrana months to compare different images and monitor changes instigated by beaver colonies. The long period of research reflects the number of images the pair analyzed, with the dates going back as far as 1930, according to The Hartford Courant.