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Ocean & Earth Sciences

UHM scientists explore the frontiers of coral reef management

Coral polyps comprise a coral colony. (photo credit: Robert Richmond)

In a new study, released in the peer-reviewed journal Frontiers in Marine Science, a team of international researchers explore the frontiers in natural and social science research—recommending actions that have the potential to build stronger support for reef management and improve the efficacy of conservation efforts. The scientists identify ways to more accurately diagnose stressors affecting reef health, approaches to ...

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Parental experience may help coral offspring survive climate change

Adult coral (Pocillopora_damicornis) and larvae (~1 millimeter). (credit: Hollie Putnam and Beth Lenz)

A new study from scientists at the University of Hawaiʻi at Mānoa’s Hawaiʻi Institute of Marine Biology (HIMB) reveals that preconditioning adult corals to increased temperature and ocean acidification resulted in offspring that may be better able to handle those future environmental stressors. This rapid trans-generational acclimatization may be able to “buy time” for corals in the race against climate ...

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Marine debris drift model simulates MH370 crash site and flow paths

IPRC model showing predicted movement of crash debris.

  The International Pacific Research Center (IPRC) within SOEST has used the Marine Debris Drift Model developed by SOEST researchers Nikolai Maximenko and Jan Hafner to simulate the pathways of debris from the likely crash site of MH370 in the Indian Ocean.  Building upon the model the developed to predict the movement of debris from the 2011 tsunami in Japan, Maximenko and ...

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Bacteria affects sand more than seawater

manoa-engineering-shoreline

Sewage-contaminated coastal waters can lead to stomach aches, diarrhea and rashes for those who accidentally swallow harmful microbes or come into contact with them. New research recently published in the American Chemical Society (ACS) journal Environmental Science and Technology sheds light on why fecal contamination affects sand more than water. University of Hawaiʻi at Mānoa Associate Professor of Civil and ...

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Ritidian Point wave buoy redeployed to serve Guam communities

manoa-pacioos-ritidian-point-buoy

On July 17, 2015, the Pacific Islands Ocean Observing System (PacIOOS) redeployed its wave buoy outside ofRitidian Point with the support of the U.S. Coast Guard. The yellow buoy is located about 4 miles offshore and will now continue to send information on wave height, direction, period, and sea surface temperature. The reinstalled buoy off Ritidian Point joins the existing ...

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New tool forecasts high sea levels and potential flooding on Kwajalein Atoll

manoa-pacioos-kwajalein-atoll

A new Pacific Islands Ocean Observing System (PacIOOS) tool is now available that forecasts the potential occurrence of high sea levels and wave inundation for the most populated segments of Kwajalein Atoll. The forecast is updated hourly and accessible to the public on the PacIOOS website. “Due to the low elevation of the Marshall Islands, communities are vulnerable to flooding ...

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Protecting the deep sea: a call for balancing mining and ecosystem sustainability

A new species from a new order of Cnidaria collected at 4,100 meters in the Clarion-Clipperton Fracture Zone (CCZ) that lives on sponge stalks attached to nodules. Photo credit: Craig Smith and Diva Amon, ABYSSLINE Project.

Thousands of feet below the ocean’s surface lies a hidden world of undiscovered species and unique seabed habitats—as well as a vast untapped store of natural resources including valuable metals and rare-earth minerals. Technology and infrastructure development worldwide is dramatically increasing demand for these resources, which are key components in everything from cars and modern buildings to computers and smartphones. ...

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Timing is critical for the success of some spawning fish

Timing is critical for the snapper and other reef fish that aggregate to spawn each year. Photo credit: National Oceanic and Atmospheric Administration

The larvae of some species of reef fish appear to survive better depending on the timing of when they were spawned, according to new research from the University of Hawaiʻi at Mānoa Hawaiʻi Institute of Marine Biology(HIMB) and the National Institute for Mathematical and Biological Synthesis (NIMBioS). The findings advance earlier research that suggested only spawning location is critical and ...

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[VIDEO] Hōkūleʻa crew and UH researchers explore Great Barrier Reef

Hokulea Great Barrier Reef

Three key University of Hawaiʻi staff contributed to Hawaiian voyaging canoe Hōkūleʻa’s exploration and research at Australia’s Great Barrier Reef in June. Chad Kalepa Baybayan is a master navigator and serves as astronomer in residence at UH’s ʻImiloa Astronomy Center on the Big Island. UH graduate assistant Haunani Kane is serving as Hōkūleʻa’s assistant navigator. UH researcher Ruth Gates, an ...

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Deep sea sharks are buoyant

Shark with tag

Scientists from the University of Hawaiʻi at Mānoa and University of Tokyo revealed that two species of deep-sea sharks, sixgill and prickly sharks, are positively buoyant—they have to work harder to swim downward than up and they can glide uphill for minutes at a time without using their tails. Their results were published in a recent study,“Unexpected Positive Buoyancy in ...

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