Movement of dioxins through the food web has resulted in bioconcentration and biomagnification.

** Ecosystems: biodiversity — biome — habitat — plankton — thermocline — carbon cycle — water cycle — nitrogen cycle — food web — trophic level — saprobe — decomposition

DDT and its breakdown products are transported from warmer regions of the world to the Arctic by the phenomenon of global distillation, where they then accumulate in the region's food web.

Elton's ' food cycle ' was replaced by ' food web ' in a subsequent ecological text.

A food web is the archetypal ecological network.

The larger interlocking pattern of food chains in an ecological community creates a complex food web.

Generalized food web of waterbirds from Chesapeake Bay

Complete empirical measurements are generally restricted to a specific habitat, such as a cave or a pond, and principles gleaned from food web microcosm studies are extrapolated to larger systems.

Feeding relations require extensive investigations into the gut contents of organisms, which can be difficult to decipher, or stable isotopes can be used to trace the flow of nutrient diets and energy through a food web.

This increases food web stability.

The frog represents a node in an extended food web.

The fish community of this lake has remained stable over a long period until a number of introduced species | introductions in the 1970s restructured its food web.

Algae are the basis of the open water food web, and the source of primary production that ends up as Lake Trout and Walleye at the top of the open water food web.

Lake Ontario food web

Insects play a critical role as pollinators, decomposers, and as a part of the food web.

< center > Fishing down the food web </ center >

Frogs are a keystone group in the food web dynamics of many of the world's ecosystems.

Measurements of ratios of one naturally occurring stable isotope to another play an important role in radiometric dating and isotope geochemistry, and also helpful for determining patterns of rainfall and movements of elements through living organisms, helping sort out food web dynamics in ecosystems.

They are generally herbivorous, entangling planktonic food through a mucous web that can be up to 5 cm wide, many times larger than themselves.

Radiopasteurization, which produces fewer adverse sensory changes in food products, has potential usefulness in prolonging the keeping qualities of fresh and refrigerated food items.

Steak House has such a run on beer to wash down that Mexican food `` Tex '' Burgess had to call the draft man twice in one day.

For the first time in history, the U.S. has produced a society in which less than one-tenth of the people turn out so much food that the Government's most embarrassing problem is how to dispose inconspicuously of 100 million tons of surplus farm produce.

Throughout much of the world, food is still so scarce that half of the earth's population has trouble getting the 1,600 calories a day necessary to sustain life.

The aftermath of the crisis has started to shift the structure in the retail sector in favor of food products.

However, the connection that has derived ambrosia from the Greek prefix a-(" not ") and the word brotos (" mortal "), hence the food or drink of the immortals, has been questioned as coincidental by some modern linguists.

Amaranth seed flour has been evaluated as an additive to wheat flour by food specialists.

A traditional food plant in Africa, amaranth has the potential to improve nutrition, boost food security, foster rural development and support sustainable land care.

The food also has a reputation for high levels of MSG to enhance the flavor.

This substance has also been used historically as a flavouring for food, and some people consider it an aphrodisiac.

Driven by consumer demand, the ethnic food market reached record sales in 2002, and has emerged as the fastest growing category in the food and beverage product sector, according to USBX Advisory Services.

Excess calcium from supplements, fortified food and high-calcium diets, can cause milk-alkali syndrome, which has serious toxicity and can be fatal.

While these plants are not sold anywhere for culinary use, their visual similarity to bay leaves has led to the oft-repeated belief that bay leaves should be removed from food after cooking because they are poisonous.

U. S. leadership in building food security in the Sahel after the 1968-74 drought has been successful in virtually eliminating famine, despite recurrent drought years.

The importance of this family for food crops has led to its selective breeding throughout history.

:* Minneapolis has a celebration in Uptown with wine, French food, pastries, a flea market, circus performers and bands.

Agriculture has been theorized to have become the dominant way of producing food since the Neolithic Revolution.

Biotechnology has applications in four major industrial areas, including health care ( medical ), crop production and agriculture, non food ( industrial ) uses of crops and other products ( e. g. biodegradable plastics, vegetable oil, biofuels ), and environmental uses.

" Though she claims thousands of followers, mostly in Germany, there has been no verification that any have lived for extended periods without food.

Brooks's institute has charged varying fees to prospective clients who wished to learn how to live without food, which have ranged from US $ 100, 000 with an initial deposit of $ 10, 000 to one billion dollars, to be paid via bank wire transfer with a preliminary deposit of $ 100, 000, for a session called " Immortality workshop ".

`` They wouldn't have sold me in the first place if there'd been food enough to go around ''.

A volunteer food brigade had been arranged, they told me, which would supply me with the necessities as long as I remained at the bridge.

And once medicine, food, clothing and shelter had been provided for the flood's victims, communications and the mail were the next top problems.

Abalone have long been a valuable food source for humans in every area of the world where a species is abundant.

It may have been at the top of the food chain in its local ecosystem.

The two terms may not have originally been distinguished ; though in Homer's poems nectar is usually the drink and ambrosia the food of the gods ; it was with ambrosia Hera " cleansed all defilement from her lovely flesh ", and with ambrosia Athena prepared Penelope in her sleep, so that when she appeared for the final time before her suitors, the effects of years had been stripped away and they were inflamed with passion at the sight of her.

The symptoms of a so-called Chinese restaurant syndrome or " Chinese food syndrome " have been attributed to a glutamate sensitivity, but carefully controlled scientific studies have not demonstrated such negative effects of glutamate.

American chefs have been influential both in the food industry and in popular culture.

Its function is to control the expulsion of feces, unwanted semi-solid matter produced during digestion, which, depending on the type of animal, may be one or more of: matter which the animal cannot digest, such as bones ; food material after all the nutrients have been extracted, for example cellulose or lignin ; ingested matter which would be toxic if it remained in the digestive tract ; and dead or excess gut bacteria and other endosymbionts.

They later discovered nearly all of the food they had been destroying was not being produced for guerrillas ; it was, in reality, only being grown to support the local civilian population.

The products of oak trees were once an important food for swine and a farmstead may have been named for such produce.

Large numbers of internally displaced persons have been unable to produce their own food and are largely dependent on international humanitarian assistance.

Hops had been used for medicinal and food flavouring purposes since Roman times ; by the 7th century in Carolingian monasteries in what is now Germany, beer was being made with hops, though it isn't until the thirteenth century that widespread cultivation of hops for use in beer is recorded.

The research team reported that he did not consume any food or water during the testing periods, although they could not comment on his claim of having been able to survive in this way for 70 years.

Some Christians, such as Catholicism and Eastern Orthodoxy, also have traditions of fasting, in which saints, as well as Jesus, are claimed to have been able to go for a period of time ( without any food, or with no food but the Eucharist ).

Along with changes in food, there have also been several changes in nutritional guidelines as well.

Since 1916, there have been several different nutrition guidelines issued by the United States government, eventually leading up to the food pyramid.