The passage of energy (in the form of food) from producers to the organisms that feed upon them. The number of links in a food chain varies (from producer to top predator), but seldom exceeds five. Most communities contain food webs, i.e., food chains that are interlinked. Trees are producers. Their seeds, fallen leaves, live leaves, bark, and so on are consumed by insects and animals.
A succession of organisms starting with algae or other plants, followed by the animals that feed on them. Next come the animals that feed on the animals that feed on plants, and so forth. A simplified example would be algae followed by tiny floating animals that eat the algae; larger floating animals (still small) that eat the tiny animals; small fish that eat the larger animals; big fish that eat the little fish; and humans who eat the big fish.
A sequence of species in which each species serves as a food source for the next species. Food chains usually begin with species which consume detritus or plant material (herbivores) and proceed to larger and larger carnivores. Ex: grasshopper eaten by snake eaten by owl.
is the sequence in which each organism is the food of the next member in the chain. Green plants are at the beginning of the chain, followed by herbivores, smaller carnivores, and finally larger carnivores.
a specific nutrient and energy pathway in ecosystems proceeding from producer to consumers; along the pathway, organisms in higher trophic levels gain energy and nutrients by consuming organisms at lower trophic levels
The feeding relationships among organisms. A hierarchy or pecking order of different living things, each of which feeds on the one below. For instance, a jaguar eats a bird which eats an ant which eats a berry from a tree. Eating lower on the food chain (i.e. eating a plant-based diet versus an animal based diet) is good for our health and the environment. fossil fuels Another name for the gasoline and fuel oils that come from petroleum. So named because they came from the fossils of dinosaurs and plants that lived on Earth millions of years ago.
A food chain shows how each living thing gets its food. A food chain always starts with plant life and ends with an animal. (e.g. grasshopper eats plants like corn, shrews eat grasshoppers, hawks eat shrews.)
The sequence of algae being eaten by small aquatic animals (zooplankton) which in turn are eaten by small fish which are then eaten by larger fish and eventually by people or predators. Certain chemicals, such as PCBS, mercury, and some pesticides, can be concentrated from very low levels in the water to toxic levels in animals through this process. Page - 19
The order or organisms that feed upon each other, from lowest plant life forms, to fish and animals, to humans. Toxins present in lower forms tend to become more concentrated as they climb the food chain.
Interrelations of organisms that feed upon each other, transferring energy and nutrients. Typically solar energy is processed by plants who are eaten by herbivores which in turn are eaten by carnivores: sun - grass - mouse - owl
The transfer of food energy through a series of organisms, beginning with the consumption of green plants (producers) by herbivores (plant eaters), and later consumption of the herbivores by carnivores (meat eaters)
food chain is a simple way of thinking about energy moves through a community of living things. The sun's energy is transferred from plants (producers) through animals (consumers) and finally returned to the soil by decomposers that feed on the dead and waste products. An example from Sabino Canyon is: grass, cottontail rabbit, coyote, dead coyote eaten by maggots (fly larvae).
A number of organisms forming a series through which energy is passed. At the base of the chain (the producer, or first trophic level) there is always a green plant or other autotrophy that traps energy, almost always from light, and produces food substances, thereby making energy available for the other (consumer) levels. Any natural community will have many interlinked food chains that make up a food web or food cycle.
the transfer of food energy from the source in plants through a series of animals, with repeated eating and being eaten. For example, a green plant, a leaf-eating insect, and an insect-eating bird would form a simple food chain.
A series of plants and animals linked together by their food relationships. Grass eaten by a rabbit which is then eaten by a fox is a three-part food chain. In nature, food chains rarely exceed four or five members.
The transfer of food energy from plants through herbivores to carnivores. An example: the sequence of algae being eaten by zooplankton (grazers; herbivores) which in turn are eaten by small fish (planktivores; predators) which in turn are eaten by larger fish (piscivores; fish eating predators) and eventually by people or other predators (fish-eating birds, mammals, and reptiles).
A chain of organisms, linked together because each is food for the next in line. Energy passes from one level to the next. All the food chains in an ecosystem are connected together in a complex food web.
linear scheme of feeding relationships, which unites members of a biological community. The number of stages in a chain does not usually exceed five, and usually involve plants, herbivores and one or two successive sets of predators.
A series of plants and animals linked by their food relationships; the passage of energy and materials from producer through a succession of consumers. Green plants, plant-eating insects, and an insect-eating bat would form a simple food chain. See also Food web.
The way each living creature depends on another living thing as a source of food. Humans eat animals, bigger animals eat smaller animals, smaller animals eat even smaller ones, and so on, down to the tiniest living creatures. See 'Web of life' term this list.
The simplest representation of energy þow in a community. At the base is energy stored in plants, which are eaten by small organisms, which in turn are eaten by progressively larger organisms; the food chain is an oversimpliÞcation in that most animals do not eat only one type of organism.
A 'chain' of organisms through which energy is transferred. Each organism in this chain feeds on and obtains energy from another organism preceding it, and in turn is eaten by, and provides energy for, the one following it (e.g. plant eaten by herbivore, then herbivore eaten by carnivore).
A food chain is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition. A food chain starts with plants or other autotrophs (organisms that make their own food from light and/or chemical energy) that are eaten by herbivores (plant-eaters). The herbivores are eaten by carnivores (meat-eaters). These are eaten by other carnivores. When any organism dies, it is eaten by dettrivores and then broken down by tiny microbes (detrivores) and the exchange of energy continues.
The transfer of energy that occurs when a series of organisms eat (or decompose) the following one. An example: insect-fish-bear or the sequence of algae being eaten by zooplankton (grazers; herbivores) which in turn are eaten by small fish (planktivores; predators) which are then eaten by larger fish (piscivores; fish eating predators) and eventually by people or other predators (fish-eating birds, mammals, and reptiles).
Plants and animals can be linked together in feeding relationships called food chains. At the bottom of food chains are green plants that convert sunlight into food energy for the rest of the chain. Animals that eat the plants are then eaten by another animal, and so on up the chain. The number of animals involved can vary. For example, in the North, the lichen-caribou-human food chain has fewer feeding links, and is much shorter than the algae (a small plant that lives in water but needs sunlight)-fish- seal-polar bear-human food chain. In nature, food chains overlap to form food webs.
A diagram that shows the flow of food and energy from producers to consumers. The original food source for all organisms in a food chain can be traced to plants. "Food chain" and "food web" are often used interchangeably, but a food chain shows just one thing that each animal eats and is eaten by; while a food web shows all the things an animal eats and is eaten by.
Includes all businesses involved in the transformation of raw materials into food. It can be short e.g eggs purchased straight from the farm, or long and complex. eg transport/slaughterhouse/transport/processor/cannery/transport/retailer/consumer chain which beef destined for tinned casseroles may follow
A metaphor for the hierarchical interrelationship among organisms in an ecosystem that describes the uptake and transfer of mass and energy (nutrients) from primary producers, to herbivores, to carnivores, omnivores, and scavengers/carrion eaters, to decomposers which close the nutrient cycle.
The plants and animals through which energy flows. Plants make up the base of the chain, by converting energy from the sun into food. Animals make up the next steps in the chain, by eating plants or other animals to get energy.
An arrangement of the organisms of an ecological community according to the order in which they eat each other, with each organism using the next lower organism in the food chain as prey. Green plants are usually at the bottom of the food chain.
the transfer of food energy from plants through herbivores to carnivores. An example: insect-fish-bear or the sequence of algae being eaten by small aquatic animals (zooplankton) which in turn are eaten by small fish which are then eaten by larger fish and eventually by people or predators.
n: Figure of speech describing the dependence of heterotrophs on other organisms for food, progressing in a series beginning with primary producers (plants) and ending with the largest carnivores. The food chain is used as a figurative image for educational purposes only... real trophic systems resemble webs rather than chains. See food web .
Food chains, food webs and/or food networks describe the feeding relationships between species in a biotic community. Food webs graphically represent the transfer of material and energy from one species to another within an ecosystem. Typically a food web refers to a graph where only connections are recorded, and a food network or ecosystem network refers to a network where the connections are given weights representing the quantity of nutrients or energy being transferred.