^^^ Given your timeframe of 1,000 years, who knows?
In the meanwhile, looking at shorter timeframes:
"This Might Be The Year Of Famine For Us": Declining Catch Worries Fishers In Southern Karnataka
(The Logical Indian)
· Declining fish catch since August 2019 has triggered a wave of worry amongst fishers across the economic spectrum in southern Karnataka.
· Climate change, unsustainable and unregulated fishing methods have both been blamed for this decline.
· Small-scale fishers are the most affected, and are now seeking support from the government.
January 18th, 2020. It is a hot Saturday afternoon in Sasihithlu, a small fishing village in southern Karnataka. At 12:30 PM, the sun is directly above us, glaring through a largely cloudless sky. Surya Salian, 62, gathers his cast net for a final throw. He enters the still blue water until it is waist-high. He swings his arm and throws the circular net. It forms a shimmering translucent circle in the air for a few seconds, then drops into the water. After a few minutes, he pulls it out. It has one small fish, a silver biddy, wriggling. He throws it on the white sand, next to three other fish caught a short while ago.
January 19th, 2020. It is balmy and breezy at 4 AM in the Arabian Sea. A purse seiner, a big boat that goes out about 15 nautical miles into the ocean to catch Indian oil sardines, is ready to head out. Most of the crew on the ship is from Odisha, Jharkhand and Andhra Pradesh. They left because their land did not offer them a living, and they arrived here, on the west coast, in south Karnataka, working on big fishing boats, hoping for a better life. After six hours, the ship returns, empty-handed. The crew members earn nothing for the day.
Since August 2019, fishers across the spectrum, from the small-scale ones to owners of giant trawlers, echo a similar lament. There are no fish in the ocean. Although the official fish catch data for 2019-2020 will be released only after March 2020, officials from Central Marine Fisheries of India (CMFRI) have confirmed that there has been a significant decline in fish catch since the post-monsoon season.