food chain


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food chain

n.
1. A succession of organisms in an ecological community that are linked to each other through the transfer of energy and nutrients, beginning with an autotrophic organism such as a plant and continuing with each organism being consumed by one higher in the chain.
2. Informal A competitive hierarchy: works high up in the corporate food chain.
Food chainclick for a larger image
Fig. 164 Food chain . A complex food web of producer (P), herbivore (H) and carnivore (C).
Food chainclick for a larger image
Fig. 163 Food chain . A simple food chain.

food chain

a sequence of organisms arranged in such a way that the second grouping, e.g. HERBIVORES, feeds on the first, e.g. PRIMARY PRODUCERS, and the third, e.g. CARNIVORES, feeds on the second. See Fig. 163 . Each organism in the chain feeds and derives energy from its predecessor in the chain, the relative energy value at each TROPHIC LEVEL often being assessed by the construction of ECOLOGICAL PYRAMIDS. In practice, such simple systems rarely exist and the nutritional relationships between organisms normally constitute a , food web. See Fig. 164 .
References in periodicals archive ?
Good Food Chain owner and founder Martyn Corfield said: "I was absolutely devastated to hear that people had died after contracting listeriosis and have been thinking constantly about all those affected and their families over the last few weeks.
A spokesman for the Good Food Chain said: "We welcome the Food Standards Agency's announcement that the Good Food Chain is no longer part of the ongoing investigation into the recent listeria outbreak." "While this means we can now resume production, we have not yet taken any decision about whether it is viable to do so.
The new Food Markets Act creates good conditions for stopping prohibited commercial practices from the food chain. For the first time in Finland, there is now an authority with sufficient resources and means to address inappropriate food chain practices.
In the video, Maravilla points at the pictures in the fast-food chain, saying, 'There are literally no Asians on these walls.' He then shared how they planned the whole thing, how they made the poster, and him pretending to be an employee of the fast food chain just to sneak in the photo.
It's analogous to a shark cruising the ocean, giving no thought to the zooplankton at the bottom of the food chain. However, without those microscopic organisms the tiny baitfish don't survive, and without the baitfish the larger fish disappear and the shark has nothing to eat.
"Improving the cold food chain has huge benefits in reducing food waste and costs, minimizing logistics inefficiencies and greenhouse gas emissions, while shrinking social infrastructure costs."
In corn, I think I've found the key to the American food chain. If you look at a fast-food meal, a McDonald's meal, virtually all the carbon in it - and what we eat is mostly carbon - comes from corn.
He noted that the law applies in all stages of the food chain from primary production through processing until it reaches to the consumer.
Essentially, the metabolic explanation for constraints on food chain lengths contends higher trophic levels are simply energy starved, and at some point, cannot support an additional level of consumers (predators).
Critique: An impressively researched, profusely documented, and articulate expose of one of the major and pervasive health hazards to the health and well-being of virtually everyone, "Our Daily Poison: From Pesticides to Packaging, How Chemicals Have Contaminated the Food Chain and Are Making Us Sick" is ably translated into English by Allison Schein and lara Vergnaud, should be considered a critically important addition to both community and academic library collections.
Private equity firms, TPG Capital and Abraaj Group are in talks to purchase food chain Saudi fast food chain, Kudu.
To this end, they called on the member states to streamline their control procedures and clearly indentify the responsibilities of the various supervisory authorities along the food chain. The current traceability regimes, according to MEPs, should be extended to all products and to the entire food chain so that all stages of production, processing, sales and distribution become transparent and fully open to scrutiny.