MAINE PUBLIC • November 9, 2022
Friends of Casco Bay released a report Wednesday showing that the waters of the bay are warming at roughly one degree per decade, which the group says will have significant ecological impacts. Casco Baykeeper Ivy Frignoca says the rate of temperature change is alarming. In some recent winters, the bay hasn't dipped below 32 degrees, which creates a comfortable environment for invasive green crabs. And in summer, the nearshore waters can be as warm as 80 degrees. Frignoca says the warmer water — which holds less dissolved oxygen — combined with algae blooms, can cause problems like the die off of softshell clams in Maquoit Bay over the summer.