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TROPHIC PYRAMID [4 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2014-11-04

English

Subject field(s)
  • Ecosystems
DEF

An association of plants and animals living in equilibrium in a given biological environment (i.e. a group of species adapted to a specific type of habitat, such as rocky bottom, sand, deep waters, etc.).

CONT

A typical ecological community in fresh water habitat might be considered a pyramid, with the more complex forms of life at the top trophic level and the nutritional sources at the bottom.

OBS

Compare with "ecological association" and "assemblage."

OBS

biocenosis; biotic community; community: terms used by Parks Canada.

Key term(s)
  • ecologic community

French

Domaine(s)
  • Écosystèmes
DEF

Association d'animaux et de végétaux qui vivent en équilibre dans un milieu biologique donné; groupe d'espèces adapté à un type particulier d'habitat, comme un fond rocheux, sablonneux, des eaux profondes, etc.

CONT

Par communauté on entend l'ensemble de toutes les «populations» d'organismes d'une région donnée. Le terme peut être restreint à des populations d'espèces animales : une communauté animale, ou encore à des populations d'espèces végétales : une communauté végétale.

OBS

Selon les acceptions, la notion de communauté va de l'équivalent d'une biocénose, groupement très cohérent fortement lié par de nombreuses interdépendances, jusqu'à l'assemblage, notion récente désignant tout groupement spécifique.

OBS

biocénose; communauté biotique : termes en usage à Parcs Canada.

Key term(s)
  • écocommunauté

Spanish

Campo(s) temático(s)
  • Ecosistemas
DEF

Conjunto de organismos vegetales y animales que viven en un mismo biotopo.

Save record 1

Record 2 2009-08-04

English

Subject field(s)
  • Ecology (General)
  • Ecosystems
DEF

A pyramid-shaped diagram representing quantitatively the numbers of organisms, energy relationships, and biomass of an ecosystem; numbers are high for the lowest trophic levels(plants) and low for the highest trophic level(carnivores).

OBS

A typical ecological community in fresh water habitat might be considered a pyramid, with the more complex forms of life at the top trophic level and the nutritional sources at the bottom.

French

Domaine(s)
  • Écologie (Généralités)
  • Écosystèmes
DEF

Représentation graphique, sous forme de bandes horizontales, qui exprime numériquement les relations entre les divers constituants d'une chaîne trophique du point de vue des effectifs (pyramides des nombres), de la biomasse (pyramide des biomasses) ou du rendement énergétique (pyramide des énergies).

Spanish

Campo(s) temático(s)
  • Ecología (Generalidades)
  • Ecosistemas
DEF

Representación gráfica de las relaciones cuantitativas del número de organismos, biomasa o flujo energético entre los niveles tróficos de una cadena alimenticia.

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Record 3 2009-03-09

English

Subject field(s)
  • Ecology (General)
CONT

A glance at the entry, ecological community, will reflect the ecological pyramid, made up of trophic levels. The ecological law involved in such a pyramid is that the higher one goes the lower are the number of individuals in the population, and the larger their specimen size.

French

Domaine(s)
  • Écologie (Généralités)
OBS

Ne pas confondre cette notion avec celle de loi portant sur l'environnement, loi promulguée par une autorité afin de lutter contre la pollution de l'environnement. Il s'agit plutôt ici des lois qu'on observe dans la nature non touchée par la pollution.

Spanish

Campo(s) temático(s)
  • Ecología (Generalidades)
Save record 3

Record 4 2001-07-09

English

Subject field(s)
  • Wastewater Treatment
CONT

Process of treatment provides rapid sorption and adsorption of pollutants working in high load regime. After sludge moves for the regeneration in the special unit. Sludge separation is done in the clarifier equipped with thin film modules. Portion of sludge circulates between biosorber and sludge blanket into clarifier. Mostly sludge with the special equipment is removed from clarifier and pumped to regenerator. Biosorber and regenerator is equipped with plastic media. Fixed biocenosis is characterised by lot of microorganisms with the predator and bacteriofaque type of feeding(much more than in suspended sludge)... Mineralizator. Vertical cylinder-shaped reservoir equipped with aerators, plastic media thin film modules, pumps, electric equipment and automation. Reservoir is divided by semi-submersed partition walls forming clarifier. Mineralization of sludge takes place in aerobic conditions. Excessive sludge supply to mineralizator is continuous due to clarifier. Sludge water by gravity enters reactor. Due to plastic media using in the sludge mineralization trophic conditions for upper level of food pyramid is completed. Thus considerable part(90-95%) of excessive sludge is reduced due to complete trophic relations. Mineralized sludge mainly consists of zooglea, protozoa, metazoa and bacteriophagus which are perfect food for fishes fry. If sludge has not accumulated toxic substances, it can be discharged into any water bodies.

French

Domaine(s)
  • Traitement des eaux usées
DEF

Éléments sédimentés en cours de minéralisation dans un milieu naturel, qui ne sont plus susceptibles d'évolution rapide.

OBS

La biocénose des boues stabilisées tend vers la biocénose des sols humides et des vases stabilisées (L'analyse écologique des boues activées, 1976, p. 57).

OBS

vases stabilisées; vases minéralisées : termes le plus souvent utilisés au pluriel.

Key term(s)
  • vase stabilisée
  • vase minéralisée

Spanish

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