bournes pond 110618-02

A foggy morning at Bournes Pond.

Falmouth Marine and Environmental Services staff are asking the public for assistance with determining the cause of a fish kill last week in Bournes Pond.

“It could be any number of things, said R. Charles Martinsen III, deputy director of MES.

State officials are looking into the cause; Mr. Martinsen said the town will not know for sure until the Massachusetts Division of Marine Fisheries concludes its examination of the carcasses. Mr. Martinsen said he was not sure of the size of the kill.

MES was notified last week by multiple members of the public of dead striped bass throughout the pond, a repeated occurrence, since a one-day kill was also detected last year in the same location. Last year’s cause is unknown, he said.

Anyone who sees “fresh kill,” where the eyes of the fish are still clear, is asked to call MES at 508-457-2550, extension 6. Mr. Martinsen’s staff are assisting the state by collecting samples of dead fish from the pond that will then be examined.

Past die-offs in Falmouth estuaries have taken place during algal blooms that result in depleted oxygen in the water, which suffocates the fish.

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