When spring arrives and the chorus of the spring peeper and wood frog fills the air to welcome the season, small pools in depressions in the land may also appear, teeming with life. Whether a seasoned expert on these seasonal sanctuaries or encountering them for the first time, their presence is undeniably fascinating.
These unique places, known as vernal pools, form when melting snow, spring rain, runoff, and rising groundwater fill natural depressions in the ground during specific times of the year. In springtime, they provide critical breeding habitats for several amphibian and invertebrate species whose life cycles rely on these temporary spaces.
Vernal pools are regarded as a distinct and increasingly vulnerable type of wetland. Some well-known species that rely on these pools include wood frogs, spring peepers, and spotted salamanders, along with multiple species listed as threatened or of special concern on the Massachusetts Endangered Species list. However, vernal pools are highly susceptible to development, as they are often overlooked when wetlands are being identified on development sites—since, for much of the year, these pools are not present or visible.
Collecting specimens
Examining specimens
Egg masses
Tadpole
One of the best ways to protect these vital habitats for egg-laying species is to get them certified through the MA Natural Heritage & Endangered Species Program. Proceeding with the certification of these habitats is crucial, as only then will they receive the highest level of protection under the Massachusetts Wetland Protection Act.
With the ongoing habitat restoration project taking place at Ebenezer Keyes Conservation Area, efforts are also underway to get a second vernal pool on the property certified, adding an additional layer of protection to these critical habitats.
The certification process for the second vernal pool at Ebenezer Keyes Conservation Area is a team effort, with volunteers joining Emily Merlino, Director of Land Programs, in the field. Armed with rubber boots and waders, they worked alongside wetlands scientist Greg Russo to collect specimen samples. The group was excited to find egg masses and tadpoles—clear indicators of a vernal pool. Their findings, along with images, are being submitted to the state of Massachusetts for certification.
An update on the status of this certification is eagerly awaited, as each new designation strengthens the protection of these fragile ecosystems. Vernal pools are vital for biodiversity, supporting a rich variety of amphibians and invertebrates that depend on them for breeding. Protecting these wetlands is essential for maintaining biodiversity and ecological stability.