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First global atlas of marine plankton reveals remarkable underwater world
Date:7/19/2013

Under the microscope, they look like they could be from another planet, but these microscopic organisms inhabit the depths of our oceans in nearly infinite numbers.

To begin to identify where, when, and how much oceanic plankton can be found around the globe, a group of international researchers have compiled the first ever global atlas cataloguing marine plankton ranging in size from bacteria to jellyfish. The atlas was published today in a special issue of the journal Earth System Science Data.

The atlas, known as the Marine Ecosystem Biomass Data (MAREDAT), is the first step towards a comprehensive inventory of the marine biota based on counts of individual cells or organisms. It will help researchers better understand marine biodiversity for conservation and monitoring and is the result of collaborations between scientists at the Woods Hole Oceanographic Institution (WHOI), the University of East Anglia, ETH Zurich, University of Manchester, Universit d'Angers and CNRS, the US National Oceanic and Atmospheric Administration (NOAA), together with many other scientific institutions around the world.

"One of the more surprising findings from the study is that phytoplankton and zooplankton biomass are roughly the same size in the upper ocean. Compare that to more familiar land ecosystems where the biomass of plants greatly exceeds that of animals and it's pretty illuminating," says WHOI Senior Scientist and Marine Chemist Scott Doney, a collaborator on the project.

The MAREDAT database is open-source and available through a public website.

Thus far, it has catalogued about half a million measurements of plankton biomass, which are subdivided into 12 broad plankton groups. Each group has a separate database.

"The data and documentation can be downloaded by any researcher so that they can explore their own scientific questions," Doney says. "Over time we hope to grow the database by adding other histori
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Contact: Press Office
media@whoi.edu
508-289-3340
Woods Hole Oceanographic Institution
Source:Eurekalert

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