Settled weather brings bloom

Warm weather is behind the return of an unsightly algal bloom in Gisborne rivers.

After a resident noted a discoloured patch on the Waimata River, Gisborne District Council investigated.

“It is most likely a planktonic algal bloom,” environmental monitoring team leader Peter Hancock said. “This is fairly typical of this time of year. Nutrients in the river combined with the settled weather (longer gaps between flushing flows; and lower general freshwater flows), warm temperatures and longer days can cause these algal blooms.”

Warm weather is behind the return of an unsightly algal bloom in Gisborne rivers.

After a resident noted a discoloured patch on the Waimata River, Gisborne District Council investigated.

“It is most likely a planktonic algal bloom,” environmental monitoring team leader Peter Hancock said. “This is fairly typical of this time of year. Nutrients in the river combined with the settled weather (longer gaps between flushing flows; and lower general freshwater flows), warm temperatures and longer days can cause these algal blooms.”

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