Hawaii Ocean Time-series (HOT)
in the School of Ocean and Earth Science and Technology at the University of Hawai'i

Headline News


2015, October : Ocean Station ALOHA designated a Milestones in Microbiology site

Ocean Station ALOHA, the University of Hawai'i at Manoa's (UHM) research site 60 miles north of Oahu, Hawai'i, has been designated a Milestones in Microbiology site by the American Society for Microbiology (ASM). ASM Milestones in Microbiology program recognizes institutions and scientists that have made significant contributions toward advancing the microbial sciences.

view UH News


2014, July : Ocean's most abundant organisms have daily cycles

Communities of ocean microbes have their own daily cycles, and they are not all about the sun. Photoautotrophs - bacteria that use solar energy to help them photosynthesize food - have been known to sun themselves on a regular schedule. But in a new study published in the journal Science, researchers working at Station ALOHA, a deep ocean study site 100 km north of O'ahu, observed different species of free-living, heterotrophic bacteria turning on diel cycling genes at slightly different times, suggesting a wave of transcriptional activity that passes through the microbial community each day. Oceanography professor and C-MORE co-PI and co-director Ed DeLong was head of the MIT team that made this discovery.

view NSF's Science360


2014, March : Station ALOHA Habitat for ocean observation

"A circle in the Pacific 12 miles across gives scientists a laboratory for studying the sea."

view Honolulu Star Advertiser


2013, March 13 : Hawai'i Ocean Time-series Program reaches milestone

On March 9, 2013, the UH research vessel Kilo Moana returned from the 250th scientific expedition of the Hawaii Ocean Time-series (HOT) program after nearly 25 years of approximately monthly research cruises to observe and interpret habitat variability and to track climate impacts on Hawaii's marine ecosystem. "It is really satisfying to reach this milestone, and to see the growing importance of the HOT program accomplishment,." said David Karl, Oceanography Professor and Director of (C-MORE). "Each additional year of observations brings us closer to a fundamental understanding of how the ocean functions, and its relationships to climate."

view SOEST press release


2012, February 12 : HOT news: Pacific carbon pump speeds up in summer

Using 13 years of Hawai'i Ocean Time-series (HOT) data from Station ALOHA (about 100 miles north of O'ahu), an international team of scientists led by David Karl, professor of Oceanography and director of C-MORE, has documented a regular, significant, and unexpected increase in the amount of particulate matter exported to the deep sea in the North Pacific Subtropical Gyre. The findings were published in the 07 February 2012 issue of PNAS, the Proceedings of the National Academy of Sciences. Oceanography assistant professor Matthew Church is a co-author.

view UH News


2010, September : Oceanic ecosystem time-series programs: Ten lessons learned

Published as part of a special issue of Oceanography to celebrate 50 years of the Intergovernmental Oceanographic Commission.

view reprint from TOS


2010, June 29 : Nutrients go deep, sunlight stays shallow?

"An ongoing mystery is how marine algae manage to be very productive when the sunshine they need for photosynthesis is only near the surface and the nitrate nutrients they require are in the deep ocean. Ken Johnson (MBARI), Steve Riser (UW), and Dave Karl (director of C-MORE) studied nitrate fluxes at Station ALOHA; their findings were published in 06-24-10 issue of the prestigious journal Nature." (SOEST in the News)

view Honolulu Star Bulletin


2010, March 17 : National Academy of Sciences honors UH-Manoa

"A group of Hawaii Ocean Time-series (HOT) scientists from UH and Montana State will receive the 2009 Cozzarelli Prize from the National Academy of Sciences for the best scientific paper in the Proceedings of the National Academy of Sciences (PNAS) in the areas of physical sciences and mathematics."

view The Honolulu Advertiser


2009, August 16 : Research ship gets Sen. Inouye's praise

"'National interests are well-served', commented U.S. Senator Daniel K. Inouye after his recent tour of the Research Vessel Kilo Moana at the University of Hawaii Marine Center. SOEST's Dean Brian Taylor and some other scientists who have used the ship since 2002 treated Hawaii's senior senator to a sampling of the wide range of cutting-edge science they do from this unique twin-hulled platform." (SOEST in the News)

view Honolulu Star Bulletin


2009, August 7 : Station ALOHA Stands Sentinel

view reprint from Environmental Science & Technology Perspective


2009, July 31 : Station ALOHA data reveal ocean acidification

"Reporting in Proceedings of the National Academy of Sciences, lead author and former SOEST researcher John Dore (now at Montana State University) presents an analysis of the changes of pH at Station ALOHA over time and depth. Dore, along with SOEST co-authors Dave Karl, Roger Lukas, Matt Church, and Dan Sadler, found that the surface ocean grew more acidic at exactly the rate expected from chemical equilibration with increasing atmospheric CO2" (SOEST in the News)

view SOEST press release


2009, Winter : "The Ocean is HOT: 20 years of Hawaii Ocean Time-series Research in the North Pacific Subtropical Gyre"

view reprint from OCB News


2009, March 7 : Surprising phytoplankton body-building technique

"In a paper published in Nature, an international team of scientists, including UH oceanography professor David Karl, director of the Center for Microbial Oceanography: Reasearch and Education (C-MORE), and oceanography assistant researcher Michael Rappe, describe a novel strategy for marine phytoplankton growth in the vast nutrient-poor habitats of tropical and subtropical seas. " (SOEST in the News)

view SOEST press release


2009, 1(1) : Microbial observatories in the sea

All marine habitats support diverse and dynamic assemblages of microorganisms including bacteria, archaea, eukarya and their viral and metazoan predators. These complex communities interact through a variety of genetic, metabolic and ecological processes to sustain life in the sea. Recent discoveries of novel microbes, new metabolic pathways and their intimate interrelations have challenged pre-existing paradigms and have led to a renewed commitment to a comprehensive study of the biology and ecology of marine microorganisms from genomes to biomes.

view excerpt from Crystal ball - 2009 : Environmental Microbiology Reports


2008, February 25 : Oceanography research program reaches milestone

"On February 21, 2008, the SOEST research vessel Kilo Moana departed from the UH Marine Center on the 200th scientific expedition of the Hawaii Ocean Time-series (HOT) after nearly 20 years of approximately monthly research cruises to observe and interprete habitat variability and to track climate impacts on Hawaii's marine ecosystem." (SOEST in the News)

view SOEST press release & UH News


2006, January 26 : Sequencing our Seas

Using data collected at Station ALOHA, scientists have sequenced and compared the genomes of planktonic microbes living throughout the water column in the Pacific Ocean. The pioneering study yielded insight into the specialization of microbial communities at each depth - ranging from 40 to more than 13,000 feet. (SOEST in the News)

view SOEST press release


2006, January 30 : Ocean plants show effects of warming

Phytoplankton can be affected by climate change, according to a study published by Nature. Oceanographer David Karl worked with colleagues in the Netherlands to compare climate models to results from Station ALOHA. (SOEST in the News)

view Honolulu Star Bulletin


2005, June 21 : Tiny ocean species hold big surprises

David Karl and other University of Hawaii oceanographers are part of an international group trying to unravel the secrets of microscopic life in the ocean using observations and data collected at Sation ALOHA. (SOEST in the News)

view Honolulu Star Bulletin


2003, November 30 : UH researchers puzzle over oxygen output from oceans

A new study published in the journal Nature shows that the ocean is a consumer of organic matter, opposing previous views on the oxygen balance of the ocean. (SOEST in the News)

view Honolulu Star Bulletin