Food Webs

Linear sequence showing which organisms consume which other organisms, making a series of trophic levels

Food chain

More complex diagram showing a feeding relationship among organisms, not restricted to linear hierarchy
Consists of interconnected and interdependent food chains

Food web

Pyramid that shows numbers, biomass, or energy of each trophic level in a system

Eltonian pyramids

An organism that’s grazed quickly may have a lower biomass than if they weren’t grazed, but their _______ remains unchanged

productivity

There is a _____ _____ relationship between organism size and time to double population

positive linear

Surface area is proportional to ________
Small things → higher SA → higher rates of _______

metabolic rate (production)

Volume is directly related to ______ (size of cell)

biomass

SA/V gives a scaling relationship of

3/r (radius)

Specific metabolic rate (metabolism per unit biomass) is ______ ______ to an organisms linear dimension size

inversely proportional

Top-down controls create ______ _____ through a food web

trophic cascades

An _____ number of trophic links results in control of primary producers by _____ (top-down)

odd, grazing

An _____ number of trophic links results in control of primary producers by ____ (bottom-up)

even
resources