Aug 12 (Reuters) – Wildfires and heatwaves pose a growing medium- and long-term fiscal risk for Greece and the wider region, a senior adviser to Prime Minister Kyriakos Mitsotakis said, as the government boosts investment to shore up its tourism-dependent economy. Michael Arghyrou, the prime minister’s chief economic adviser, said Athens was pursuing investments in water and energy infrastructure in tourism hotspots while examining measures to improve insurance coverage against climate-related losses. • “These events are becoming a more significant and, in many respects, more frequent and severe risk phenomenon,” Arghyrou told Reuters. “This is a medium, long-term fiscal risk, not just for Greece, but the whole of the Mediterranean area.” • To address those risks, the government is pursuing an investment strategy aimed at strengthening water and energy infrastructure in tourism hotspots from Mykonos to Santorini, while also seeking to attract private capital, Arghyrou told Reuters. • The strategy also targets Epirus, the North Aegean islands, Thessaloniki, Crete, Rhodes and the Peloponnese, where the release of Christopher Nolan’s film “The Odyssey” has fueled growing …