The high efficiency of this method allows larvaceans to feed on much smaller nanoplankton than most other filter feeders.

The nanoplankton response is negligible.

It feeds primarily on zooplankton and possibly on nanoplankton (such as algae and diatoms).

Examples include marine microfossils, such as calcareous nanoplankton and foraminifera, and terrestrial plant pollen.

Picoplankton are responsible for the most primary productivity in oligotrophic gyres, and are distinguished from nanoplankton and microplankton.

Note that the SI prefix pico- is used quite loosely here, as nanoplankton and microplankton are only 10 and 100 times larger, respectively.

Interestingly, no change in the distribution of calcareous nanoplankton such as the coccolithophores can be attributed to acidification during the PETM.

Recent studies using much fine filters, of mesh size 10-20 um, indicate that a wide range of very small organisms, collectively called nanoplankton, are also present in surface waters.

This house has a coarse mesh to keep out big particles, and a fine mesh that collects the small particles, down to the nanoplankton that includes (pelagic) bacteria.

Fossil assemblages from the classic 'Imperial Formation' include calcareous nanoplankton and dinoflagellates, foraminifera, corals, polychaetes, clams, gastropods, sea urchins, sand dollars, and crabs and shrimp.

The K-Pg boundary represents one of the most dramatic turnovers in the fossil record for various calcareous nanoplankton that formed the calcium deposits that gave the Cretaceous its name.

The formation contains abundant foraminifera, radiolaria and calcareous nanoplankton fossils Locally the varicolored opaline to chalcedonic radiolarite is mined and used as an ornamental stone termed mookaite.

The base is also close to the extinction level of the calcareous nanoplankton species Triquetrorhabdulus rugosus (the base of biozone CN10b) and the first appearance of nannoplankton Ceratolithus acutus.

Mid-ocean ridge activity-or rather, the circulation of seawater through the enlarged ridges-enriched the oceans in calcium; this made the oceans more saturated, as well as increased the bioavailability of the element for calcareous nanoplankton.