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Hawaii Ocean Time-series Hawaii Ocean Time-series

Scientists working on the Hawaii Ocean Time-series (HOT) program have been making repeated observations of the hydrography, chemistry and biology of the water column at a station north of Oahu, Hawaii since October 1988. The objective of this research is to provide a comprehensive description of the ocean at a site representative of the North Pacific subtropical gyre. Cruises are made approximately once per month to the deep-water Station ALOHA (A Long-Term Oligotrophic Habitat Assessment; 22° 45'N, 158° 00'W) located 100 km north of Oahu, Hawaii. Measurements of the thermohaline structure, water column chemistry, currents, optical properties, primary production, plankton community structure, and rates of particle export are made on each cruise.
C-MORE Center for Microbial Oceanography: Research and Education

C-MORE is a recently established (August 2006) NSF-sponsored Science and Technology Center designed to facilitate a more comprehensive understanding of the diverse assemblages of microorganisms in the sea, ranging from the genetic basis of marine microbial biogeochemistry including the metabolic regulation and environmental controls of gene expression, to the processes that underpin the fluxes of carbon, related bioelements and energy in the marine environment. Stated holistically, C-MORE's primary mission is: Linking Genomes to Biomes
SCOPE 2015 SCOPE Transect

In March, 2015 SCOPE scientists participated in a transect cruise from Portand, Oregon to Honolulu, Hawaii on the R/V Kilo Moana. The science plan centered around the measurement of the diel cycle of growth, mortality and metabolite production across a gradient from the productive coastal ocean to the oligotrophic North Pacific Subtropical Gyre. Cruise participants worked collaboratively to (1) conduct real time cell-size based measurements of Prochlorococcus growth and mortality and pair these with proxies for net productivity based on the diel cycle of particulate carbon; (2) determine the presence/abundance of Prochlorococcus phages as a causal mechanism for observed patterns of Prochlorococcus mortality, (3) measure the dawn/dusk inventory of distinct dissolved and particulate metabolites (4) carry out metaproteomic analyses and targeted peptide analysis on the microbial community. All samples were collected from the ship's underway system.
SCOPE Hawaii Ocean Experiment - Legacy   (HOE-Legacy)

The major integrated science objective for the 2015 expeditions are to investigate biological variability over diel timescales in a coherent body of water. More specifically we will be measuring production and loss processes over the day-night cycle related to productivity/respiration, growth/grazing, and more. These rate measurements will be related to community composition, microorganism physiology, and also microbe-microbe interaction via production and exchange of metabolites. The shipboard work will be in the stable, low-variable oligotrophic open ocean at Stn ALOHA to connect this expedition with the long-term times-series monitoring program. The sampling strategy will pursue a Lagrangian approach whereby the research vessel will deploy and track a drifter during the period of diel-orientated measurements.