ecological pyramid


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ecological pyramid

[ek·ə′läj·ə·kəl ′pir·ə·mid]
(ecology)
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).
References in periodicals archive ?
The standard textbook description of an ecological pyramid (or trophic pyramid) displays high-level predators at the top, occupying the smallest part of the pyramid, and phytoplankton at the bottom, occupying the largest part of the pyramid.
In 2006, marine biologist Jeremy Jackson published a chapter in a book titled When ecological pyramids were upside down," (1) making the case for an era when perhaps marine trophic pyramids were inverted.
With its position at the top of the ecological pyramid, the tiger is the symbol of India's wealth of wildlife.

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