Sentences with phrase «of coccoliths»

The production of coccoliths requires the uptake of dissolved inorganic carbon and calcium.

The study, which propagated 700 generations of the coccoliths *, pointed out the value of longer - duration experiments.

Over the eons, layer after sedimentary layer of coccoliths created such landmarks as the White Cliffs of Dover.

The specific forms of each coccolith most likely evolved under pressure from zooplankton, the microscopic animal group a notch up the food chain that developed mandibles, claws, and other accoutrements for getting past the hard calcite coccoliths.

Not exact matches

The blue - green water on the right, off the west coast of Alaska, represents a bloom of coccolithophores, a single - celled species known for its white calcium carbonate plates, called coccoliths.

Scanning electron microscope (SEM) images of the three main groups of large phytoplankton — diatoms, dinoflagellates, and coccolithophorids (those with coccolith shells)-- show that they can be arrestingly beautiful.

Only later would scientists learn that coccoliths are calcite plates that surround some species of phytoplankton like armor.

The coccoliths of one species, Emiliania huxleyi — named after Huxley — reflect sunlight, turning thousands of square miles of water white or aqua.

Ph.D. student Markus Geisen of the Natural History Museum in London was to lead a research project on a micropaleontology grant this summer but says he now plans to skip over to Germany for a short - term contract researching coccolith biology.

The response of each species was, however, different, and involved intervals of slowed growth in C. pelagicus and an overall reduction in the size of the skeletal components — coccoliths — in T. pertusus.

coccoliths: Microscopic structures of varying shape and size that are made of calcite, are secreted by calcareous nannoplankton, and are found in marine deposits from the Triassic period to the Recent.

However, genetic analyses show that this calcifying haptophyte colonized the photic zone of the Black Sea shortly after the connection to the Bosporus, and the Unit I — II transition marks the moment that coccoliths began to be preserved in the sediments (Coolen et al., 2009).

But that was the time that the forefathers of the current sea species (mainly planktonic coccoliths) made the white cliffs of Dover and thick carbonate deposits in many places.

But the study also assessed long - term records of changes in the mass of the individual calcium plates, or coccoliths, which accumulate on the sea bed.

This was accompanied by an increased proportion of malformed coccoliths and incomplete coccospheres.

Gunilla Gard; Late Quaternary coccoliths at the North Pole: Evidence of ice - free conditions and rapid sedimentation in the central Arctic Ocean.

The super-sized coccolith will produce massive calcium carbonate plates and if the genetic engineers are sufficiently talented to minimize pore space — density will be maximized and so too the rate of sinking thus maximizing carbon sequestration.

This is especially true for coccoliths because these have tests of calcium carbonate.

OA affects photosynthesis and calcification of marine organisms such as coccolithophores [3 — 5], unicellular microalgae that surround themselves with scales of calcium carbonate (coccoliths).