Maui’s Molokini Crater has been ‘overused’ by vacationers, research finds
Spanning solely 18 acres and located proper off of Maui’s southwestern shores and teeming with marine wildlife, Molokini Island is usually considered one of many world’s hottest snorkeling and diving spots. A new research discovered that the excessive quantity of holiday makers has left the tiny, crescent-shaped island “overused,” and extra administration is required to guard it.
Over 40,000 vacationers visited Molokini in 2019 for ocean excursions. When the pandemic shut down tourism to Hawaii in Spring of 2020, the island received some reprieve. Nonetheless, a 2011 survey of 712 folks taking diving and snorkeling journeys to Molokini, 67% mentioned the island felt crowded.
“The COVID-related tourism freeze supplied a singular pure experiment to measure the results of decreased tourism on fish conduct in a high-use, no-take marine protected space,” mentioned Kevin Weng of William & Mary’s Virginia Institute of Marine Science and lead creator of the research in a press release.
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Environmental influence
Over 250 species of tropical fish name Molokini’s reefs residence. “Molokini is being overused, and that administration is required to enhance not solely ecosystem well being however the customer expertise,” Russell Sparks, Hawaii’s State Division of Land and Pure Assets, mentioned.
Between March 2020 and Could 2021, researchers did 5 SCUBA surveys within the waters round Molokini to file “the species, abundance, dimension and site of predatory and herbivorous fishes inside Molokini’s submerged crater,” a press release mentioned.
Researchers additionally checked out information about human presence by log books from the 40 constitution boat firms that conduct tour excursions round Molokini. They discovered that fish species and huge predators that have been displaced by the excessive quantity of people moved again to Molokini inside months.
Displacement of those creatures is regarding as a result of it impacts their spawning and “sends ripples all through the native meals net,” which might stress the whole ecosystem.
Human presence can alter the ecosyst
Since 1979, Molokini has been a “no-take” marine protected space and lots of tour operators work carefully with the state to guard the reef.
Hanauma Bay on Oahu, one other marine protected space in Hawaii, noticed elevated fish, clearer water and extra coral development inside months when it closed to guests throughout COVID. A reservation system now limits the variety of guests to the bay.
By June 2021, customer numbers to Molokini returned to pre-pandemic ranges, in accordance with the research.
“Our analysis demonstrates that human presence alone can alter the neighborhood construction and probably the functioning of an ecosystem,” Weng mentioned in a press release. “This implies we will enhance how tourism is configured in Hawaii and around the globe to cut back the impacts of human presence.”
Kathleen Wong is a journey reporter for USA TODAY primarily based in Hawaii. You’ll be able to attain her at kwong@usatoday.com
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