TERMIUM Plus®

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BOTTOM LEVEL [6 records]

Record 1 2023-06-27

English

Subject field(s)
  • Ecosystems
  • Nutritive Elements (Biological Sciences)
CONT

One significant knowledge gap necessary for assessing ecosystem-wide impacts of restoration in ... estuaries is a characterization of baseline lower trophic levels. These lower tropic levels are the lowest part of the food web where organisms such as plant-like phytoplankton serve as food to animals such as zooplankton in the water column. Other organisms of lower trophic levels include plant-like microphytobenthos and marine worms living within the sediments. These organisms form an important part of the estuary ecosystem [and] provide energy at the base of the food chain [that] support the growth of larger predators at the top[,] such as speckled trout or red fish[. These] organisms also help to break down debris, put oxygen back into sediments, and can provide a biological window into the health of an estuary.

French

Domaine(s)
  • Écosystèmes
  • Éléments nutritifs (Sciences biologiques)

Spanish

Save record 1

Record 2 2023-06-27

English

Subject field(s)
  • Ecosystems
  • Nutritive Elements (Biological Sciences)
CONT

The importance of oceans and the life within them is often understated. Oceans make up 71% of the Earth's surface, and produce 50-80% of the oxygen in the atmosphere ... A majority of this oxygen is produced by microscopic free-floating plants, also known as phytoplankton, which account for the majority of bottom trophic level production in most marine ecosystems. A large number of marine food webs are under "bottom-up" control, in which the quantity of primary production controls the abundance of individuals within trophic levels and their biomass. The Arctic marine ecosystem is thought to be under bottom-up control, where primary production is largely limited by advective nutrient supply from adjacent oceans ...

French

Domaine(s)
  • Écosystèmes
  • Éléments nutritifs (Sciences biologiques)

Spanish

Save record 2

Record 3 2003-05-27

English

Subject field(s)
  • Hydrology and Hydrography

French

Domaine(s)
  • Hydrologie et hydrographie

Spanish

Save record 3

Record 4 2000-07-17

English

Subject field(s)
  • Hydrology and Hydrography
CONT

At such sites, surge solids concentrations beyond a 30-m radius of the point of impact represented 5 to 10% of the original material, compared to 20% typically measured by Gordon (1974) at a site with a level bottom.

French

Domaine(s)
  • Hydrologie et hydrographie
CONT

[...] au-delà de 30 m du point d'impact, les concentrations du courant de densité représentent de 5 à 10 p. 100 du matériel original, alors que Gordon (1974) avait mesuré des valeurs équivalentes à 20 p. 100 sur un fond uniforme.

Spanish

Save record 4

Record 5 1993-01-01

English

Subject field(s)
  • Commercial Fishing

French

Domaine(s)
  • Pêche commerciale

Spanish

Save record 5

Record 6 1989-05-04

English

Subject field(s)
  • Stock Exchange
CONT

On the downside, as discussed earlier, more than anything else it is the yield that will ultimately produce a bottom level for a seasoned stock.

French

Domaine(s)
  • Bourse
CONT

A la baisse, comme nous l'avons déjà vu, plus que toute autre chose c'est le rendement qui finalement produira un niveau inférieur pour un titre de qualité.

Spanish

Save record 6

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