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Latest David Karl Stories

Pacific Carbon Pump Speeds Up In Summer
2012-02-09 04:44:07

An international team of scientists led by University of Hawaiʻi at Mānoa oceanographer David Karl 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. They suspect the previously undocumented phenomenon may be a response to day length, a general phenomenon known as photoperiodism. Measuring the biological carbon pump Using 13 years of...

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2010-06-23 14:24:49

Algae obtain nitrate from deep waters 250 meters beneath the surface For almost three decades, oceanographers have been puzzled by the ability of microscopic algae ("microalgae") to grow in open-ocean areas where there is very little nitrate, an essential nutrient for the algae. In this week's issue of the journal Nature, Monterey Bay Aquarium Research Institute (MBARI) chemical oceanographer Ken Johnson, along with co-authors Stephen Riser at the University of Washington and David Karl at...


Word of the Day
endocarp
  • The hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed.
This word comes from the Greek 'endon,' in, within, plus the Greek 'kardia,' heart.
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