Check
out the research summary below by Amie MacDonald, an Honour’s student at Mount
Allison University. Amie’s work is supervised by Drs. Diana Hamilton (MTA) and
David Drolet (DFO/MTA) and is also in collaboration with others at DFO and UNB.
The European Green Crab (Carcinus maenas) is an invasive species
that has recently been observed on the upper mudflats of the Bay of Fundy. We
are conducting a survey on three mudflats and three nearby rocky intertidal
areas to assess the current status of the green crab population in this region
in such ecosystems, and to determine whether it is an established breeding
population. To conduct the surveys, we set out crab-specific traps for 24 hours
every two weeks at all six sites (one of which is Joggins). At the end of the
24-hour period, we collect the traps and identify, sex, and measure all
captured crabs. We also check females for eggs. Since the green crab is a
relatively new arrival to the mudflats, we do not know what effects it will
have on the ecosystem, but the potential for serious impact exists because
green crabs have negatively affected soft-substrate habitats elsewhere. Through
this research, we aim to gain a better understanding of the local green crab population, and to gather data that will aid in
the development of management strategies, should they become necessary.