Authorities in central Greece said on Thursday that they had dredged more than 100 tons of dead fish from the waters around the port of Volos, a scenic summer destination, after a mass die-off of fish that is believed to be linked to climate change.

As televised images on Thursday showed fishing boats trawling through a silvery blanket of dead fish that formed off the port earlier this week, passers-by snapped photographs of the gruesome scene on their cellphones.

Greek officials traded accusations over the disaster as seafront businesses dependent on tourism said they have seen their revenues slashed by 80 percent since the freshwater fish showed up earlier this week.

And then there was the horrific smell that wafted through the port and its surrounding area.

Scientists said the deaths most likely resulted from a combination of global warming and inadequate water management.

Southern Europe has been grappling with the adverse effects of higher temperatures enveloping the region. This summer’s extreme heat has stoked more frequent wildfires, heat-related deaths and flooding — along with the growing threat of drought.