Sentences with phrase «by calcareous»

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.

Not exact matches

And other fish are aged by measuring calcareous bodies that grow in their ears, but this doesn't work for sharks.

The latter is also supported by the presence of calcareous algae (coccolithophoridae) in the Eemian sediments of Core PS2200 - 5 (Supplementary Fig. 2) 56.

We have investigated the response of a coral reef community dominated by scleractinian corals, but also including other calcifying organisms such as calcareous algae, crustaceans, gastropods and echinoderms, and kept in an open - top mesocosm [note: a «mesocosm» is an aquarium].

We have investigated the response of a coral reef community dominated by scleractinian corals, but also including other calcifying organisms such as calcareous algae, crustaceans, gastropods and echinoderms, and kept in an open - top mesocosm.

The marine biota also redistribute carbon: marine organisms grow organic tissue and calcareous shells in surface waters, which, after their death, sink to deeper waters, where they are returned to the dissolved inorganic carbon reservoir by dissolution and microbial decomposition.

With very inaccurate estimates, how can you be certain that some of the light atmospheric C is not coming from termites, reduced calcareous phytoplankton pull down, increased imbalance between sea and air caused by reduced mixing?

During the early Miocene, calcareous biogenic sediments began to be displaced northward by siliceous biogenic sediments with higher rates of sedimentation reflecting the beginning of circulation related to the development of the Antarctic Convergence.

These and other ecosystems where calcareous organisms (e.g., pteropods, see Glossary) play an important role will become vulnerable this century (reviewed by Raven et al., 2005; Haugan et al., 2006; Table 4.1).