“Population.”, Biologydictionary.net Editors. A population is the number of organisms of the same species that live in a particular geographic area at the same time, with the capability of interbreeding. Population means the number of people in a geographic area. However, populations contain genetic variation within themselves, and not all individuals are equally able to survive and reproduce. Are You Learning English? Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Democratic and Popular Republic of Algeria, Popular Front for the Liberation of Palestine-General Command, Population & Community Development Association, Population Analysis and Duplicate Removal, Population and Community Development Association, Population and Environmental Psychology Bulletin, Population and Habitat Viability Assessment, Population and Health Materials Working Group, Population and Human Resources Development, Population and Natural Resources Programme, Population and Public Health Approaches to HIV/Aids, Population and Reproductive Health Integrated Project, Population and Social Integration Section. It can also be used for subgroups of people or animals. In der Biologie ist eine Population die Gesamtheit aller Organismen einer … If an extreme event occurs, in which a large number of individuals within the population are unable to survive, the remaining individuals with the favored genes will reproduce, thereby increasing the frequency of these genes in the population by genetic drift. , residents, people, citizens, citizenry, public, community, populace, society, natives, occupants, occupiers. Amphibians such as toads may spawn in the lake, and use several nearby lakes within a valley for feeding. Most populations are not stable, fluctuating in size over time (the letter ‘N’ often denotes the number of individuals in a population). C. They cannot keep each other warm. Because most spawning sites are separated by land or deep water, each group of salmon that are born in a certain spawning site makes up the local population within that site; although the conditions within the routes available for dispersal to other sites are not impossible for the salmon to withstand, they are rarely found to move between sites. Uebersetzung von Population uebersetzen. Conversely, when predation is strong, populations may become depleted. 2.

A community of animals, plants, or humans among whose members interbreeding occurs. The effects that density-dependent factors may have on a population are determined by its size; for example, a larger, denser population will be decimated more quickly by the spread of disease than a widely dispersed population. Population Definition A population is the number of organisms of the same species that live in a particular geographic area at the same time, with the capability of interbreeding. If environmental conditions within the valley differ from other surrounding valleys, and the toads are isolated from other populations of the same species for long enough, the behavior or morphology of the toad may change sufficiently enough so that it cannot mate with toads outside of the valley.
Population ecology is the study of how these populations interact with the environment. All of the sharks swimming off the west coast of Australia.

Population definition: The population of a country or area is all the people who live in it. 2Biology A community of animals, plants, or humans among whose members interbreeding occurs.

This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. Elephant group structure is formed of family units of around 10 individuals, although when elephant families come into contact, they may bond to form larger groups – called ‘herds’ – of up to 100. Nonetheless, some individuals do stray from the expected route, either by choice or in error, resulting in some gene flow between populations. An event causes a significant loss of individuals in a population. However, because they cannot get across mountains, their local population is restricted to the inside of the valley. Die Populationsökologie (von lateinisch populus ‚Volk‘) ist ein Teilgebiet der Ökologie und damit der Biologie, das sich mit den Wechselwirkungen der Population einer Art mit anderen Populationen derselben oder einer anderen Art beschäftigt. A population bottleneck occurs when: A. Salmon tend to return to the same river that they were born in, in order to themselves spawn.

Without any way of leaving, an entire population of trout may exist solely within the lake and nowhere else.

A local population can be confined to a spatially small area, i.e., the fish in one pond. The characteristics which are studied include the migratory patterns, the population density, the demographics (the birth and death rates, sex ratio and age distribution), the population genetics, the life history traits and the group dynamics (the interactions within and between populations). This is called a population bottleneck. The city's population has passed 8 million––who knows what that means for the rat population living off their garbage? < Population , Populationen > die Population SUBST biol. That part of the world used to be populated by wandering tribes. Retrieved from https://biologydictionary.net/population/. Many species of Salmon are anadromous, which means they are born in fresh water before migrating to the ocean to feed and mature, and return to fresh water to breed. von lateinisch: populus - Volk Englisch: population. Populations of African elephants are believed to have existed on a continental-wide scale, numbering up to 5 million individuals in the early 1900s. The characteristics of the population can influence how it is affected by certain factors. Aussprache von Population Übersetzungen von Population Synonyme, Population Antonyme. A particular group or type of people living in a place. For interbreeding to occur, individuals must be able to mate with any other member of a … The fluctuations are usually in response to changes in the abiotic and biotic factors, which act as limiting factors against indefinite exponential growth of populations. All the inhabitants of a particular place. D. The birds, bats and monkeys, which live in the rainforest of Ecuador. Ugh. There are two traditionally recognized species of elephant, African elephants (Loxodonta Africana) and Asian Elephants (Elephas maximus), although recent research has divided the African elephants into two species: the African bush elephants (Loxodonta africana) and the African forest elephants (Loxodonta cyclotis). Dictionary Term of the Day Articles Subjects BusinessDictionary Business Dictionary Dictionary Toggle navigation. | Meaning, pronunciation, translations and examples These Foreign Words And Phrases Are Now Used In English. Late 16th century (denoting an inhabited place): from late Latin populatio(n-), from the verb populare, from populus ‘people’. For example, when food resources are plentiful and environmental conditions are favorable, populations may grow. If individuals of local populations are able to disperse between other local populations, this is called a metapopulation.

They are vulnerable to change because they have a smaller gene pool. However, any individual from each species could reproduce with another species member, so the full population of each African species includes all the individuals on the continent. During their time spent at sea, salmon come into contact with salmon from other local populations, even very distant ones. 4Astronomy Each of three groups (designated I, II, and III) into which stars can be approximately divided on the basis of their manner of formation. Although there are no barriers to mating between local populations of the same species, the tendency of salmon to return to their natal river greatly reduces gene flow between them. Because of this strong desire to ‘home’, salmon usually do not stray far away from their native spawning site, although the dispersal distance depends largely on the particular species. Each of these herds forms a local population. They are more likely to be predated on. 1. This means that the new population is highly vulnerable to further changes to the environment or availability of resources, as well as suffering the consequences of inbreeding such as disease and deformity in offspring. Migrating birds may visit the lake seasonally in order to winter; for part of the year, these birds form a local population. Populations can occur on various different scales. noun inhabitants, people, community, society, residents, natives, folk, occupants, populace, denizens, citizenry Bangladesh now has a population of about 100 million. Definition of population: All elements, individuals, or units that meet the selection criteria for a group to be studied, and from which a representative sample is taken for detailed examination. Due to their life history cycle, salmon can be categorized within the metapopulation structure. For interbreeding to occur, individuals must be able to mate with any other member of a population and produce fertile offspring. This is because there is a higher chance that a genetic mutation within the gene pool is better adapted to survive in the new situation. Definitionnoun, plural: (genetics, ecology) A group of organismsof one speciesthat interbreedand live in the same place at the same time (e.g. If a bottleneck results in too few individuals (under the minimum viable population size(MVP), there is a considerable risk of extinction after a few generations. Biologydictionary.net Editors. There are now believed to be around 400,000 remaining African elephants. https://www.thefreedictionary.com/population. Small populations are more vulnerable than large ones because: A. A. This isolation would drive the process of speciation and thus the formation of new species.