Ecologists use these simplifications in quantitative ( or mathematical ) models of trophic or consumer-resource systems dynamics.

Ecologists use simplified three trophic position food chain models ( producer, carnivore, decomposer ).

Ecologists seek to explain:

Ecologists have identified non-random properties in the topographic structure of food webs.

Ecologists consider this rodent to be a keystone species.

Ecologists refer to parapatric and peripatric speciation in terms of ecological niches.

" Ecologists have pointed to The Limits to Growth, and presented the alternative of a " steady state economy " in order to address environmental concerns.

Ecologists are teaming up with economists to measure the wealth of ecosystems and to express their value as a way of finding solutions to the biodiversity crisis.

He went on to found the Movement of Independent Ecologists.

* Behavioural Ecologists Elucidated How Peahens Choose Their Mates, And Why, an article at Science Daily.

Ecologists might investigate the relationship between a population of organisms and some physical characteristic of their environment, such as concentration of a chemical ; or they might investigate the interaction between two populations of different organisms through some symbiotic or competitive relationship.

Ecologists can broadly lump all life forms into one of two categories called trophic levels: 1 ) the autotrophs, and 2 ) the heterotrophs.

Ecologists can broadly lump all life forms into one of two trophic layers, the autotrophs and the heterotrophs.

Ecologists identify feeding relations and organize species into trophic species through extensive gut content analysis of different species.

Ecologists collect data on trophic levels and food webs to statistically model and mathematically calculate parameters, such as those used in other kinds of network analysis ( e. g., graph theory ), to study emergent patterns and properties shared among ecosystems.

Ecologists have identified some 2, 900 plant species, 70 types of mammals and 320 kinds of birds within the narrow buffer zone.

Ecologists frequently study and assess various organisms ' susceptibility to desiccation.

On 7 – 8 December 2002, the Eco Forum called for a conference that convened in the building of the Athens Lawyer Association, and it decided to establish the Green Ecologists and elected a 18 member council to coordinate the establishment of a new political entity.

The basic principles of the Ecologists Greens, as determined by their constitution are: sustainability, social justice, nonviolence, direct and participatory democracy, respect for diversity, decentralization and subsidiarity, protect and restore natural ecosystems, the quality of life, personal and social responsibility and equity.

According to Greenpeace: How a Group of Ecologists, Journalists, and Visionaries Changed the World by Rex Wyler, the Don't Make a Wave Committee was formed in January 1970 by Dorothy and Irving Stowe, Ben Metcalfe, Marie and Jim Bohlen, Paul Cote, and Bob Hunter and incorporated in October 1970.

* Wyler, Rex ( 2004 ) Greenpeace: How a Group of Ecologists, Journalists, and Visionaries Changed the World.

Ecologists are calling for a return to the lacustrine marsh that existed in Ashbridges Bay prior to extensive land filling done from the late 19th century on.

However, Francescato, De Petris and Cento continued to support SL as Ecologists for Left Ecology Freedom and finally left the Greens.

In November 2011 the Ecologists and Civic Networks ( Ecologisti e Reti Civiche, ERC ) coalition was officially launched.

Ecologists have discovered that normally vegetarian water voles living in Wiltshire, England have started eating frogs ' legs and discarding the bodies.

They noted a glycerin-bile-potato mixture grew bacilli that seemed less virulent, and changed the course of their research to see if repeated subculturing would produce a strain that was attenuated enough to be considered for use as a vaccine.

The device in use today safely burns a continuous stream of a flammable gas such as natural gas ( which is principally methane ) or a liquefied petroleum gas such as propane, butane, or a mixture of both.

Even though Rome abandoned its Britannic provinces around 400 AD, the Germanic mercenarieswho had largely become instrumental in enforcing Roman rule in Britanniaacquired ownership of land there and continued to use a mixture of Roman and Teutonic Law, with much written down under the early Anglo-Saxon Kings.

The French finally acquired the islands through a cunning mixture of strategies, including the policy of ' divide and conquer ', chequebook politics and a serendipitous affair between a sultana and a French trader that was put to good use by the French, who kept control of the islands, quelling unrest and the occasional uprising.

The purpose of preparative chromatography is to separate the components of a mixture for more advanced use ( and is thus a form of purification ).

Multi-frequency signaling ( see also MF ) is a group of signaling methods that use a mixture of two pure tone ( pure sine wave ) sounds.

Although this mixture is used in restaurant cooking, many Chinese households do not use it in day-to-day cooking.

File systems and software often list file sizes or free space in some mixture of SI units and binary units ; they sometimes use SI prefixes to refer to binary interpretation – that is using a label of gigabyte or GB for a number computed in terms of gibibytes ( GiB ), continuing the confusion.

Many islands in the West Indies, most notably Jamaica, also use hominy to make a sort of porridge with corn starch or flour to harden the mixture and condensed milk, vanilla and nutmeg to taste.

Gasoline engines take in a mixture of air and gasoline and compress it to not more than 12. 8 bar ( 1. 28 MPa ), then use a spark plug to ignite the mixture when it is compressed by the piston head in each cylinder.

* Carbon arc lamps use a mixture of rare earth elements to improve the light quality.

A helium-neon ( HeNe ) laser uses an electrical discharge in the helium-neon gas mixture, a Nd: YAG laser uses either light focused from a xenon flash lamp or diode lasers, and excimer lasers use a chemical reaction.

The best-known is probably fresco, which uses water-soluble paints with a damp lime wash, a rapid use of the resulting mixture over a large surface, and often in parts ( but with a sense of the whole ).

NEC and Bull both use a mixture of Xeon and Itanium processors for their mainframes.

At first, the term was used to describe only the burning mixture itself, but in practical use the term was soon applied to the combination of both the bottle and its contents.

Before use, one or both of the matches was lit ; when the bottle broke on impact, the mixture ignited.

The Neapolitan Ice Spoon has a double use ; ice bowl is for putting the mixture into the mold, and the handle is for leveling it.

Often a reactor of this type would use a lead-bismuth eutectic mixture.

Another factor in the demise of the rotary was the fundamentally inefficient use of fuel and lubricating oil caused in part by the need for the fuel / air mixture to be aspirated through the hollow crankshaft and crankcase, as in a two-stroke engine.

Some bacteria use conjugation to transfer genetic material between cells ; while not the same as sexual reproduction, this also results in the mixture of genetic traits.

" Single grain " does not mean that only a single type of grain was used to produce the whisky — rather, the adjective " single " refers only to the use of a single distillery ( and making a " single grain " requires using a mixture of grains, as barley is a type of grain and some malted barley must be used in all Scotch whisky ).

Modern receivers typically use a mixture of ceramic resonator or SAW ( surface-acoustic wave ) resonators as well as traditional tuned-inductor IF transformers.

Most steam turbines use a mixture of the reaction and impulse designs: each stage behaves as either one or the other, but the overall turbine uses both.