What is the difference between a population and a community?

Difference Between Population and Community:

First, the concept is different.

1. Population refers to the sum of individuals of the same species in a certain space and time.

2. Community refers to the sum of various biological populations that have direct or indirect relationships with each other in a certain natural area, also known as biological community.

Second, the characteristics are different.

1. The population has statistical characteristics such as population density, birth and death rates, age composition, and sex ratio.

2. The characteristics of a community are not included by the individual populations that compose it, but can only be manifested at the overall level of the community. The characteristics of the community mainly include richness, dominant species, interspecific relationships, community structure, ecological niche, range and boundary.

Population density refers to the number of individuals per unit area or volume, and "population density" is different from "density", the former is the "number" of individuals, and the latter is the proportion, and population density is the most basic quantitative characteristic of a population.

Forecasting agricultural and forestry pests and determining fishing intensity in fisheries require population density surveys. The population density of a population in its natural state tends to fluctuate greatly, but not indefinitely.

Birth rates, mortality rates, and migration and emigration rates all have an impact on population density. There is an upper and lower limit to the size of the population. The upper limit of population density is determined by the energy flow of the ecosystem where the population is located, and the lower limit is difficult to determine, and the homeostatic regulation of the ecosystem can keep the population density of dominant organisms within a limited range.

A population is a specific type of organism in a certain place. A community refers to all living things in a place.

A community is a species, and there are communities in many places, even if the community disappears in one place, there are communities in other places, such as wild horses, wolves, elk, lions, wild dogs, elephants.

A pond of carp, population.

A pond of all living organisms, communities.

All the fish in a pond. Neither a population nor a community.

The population is a single species, clustered into a community, not elsewhere, the population expansion is the expansion of the entire species, and the population shrinkage is the shrinkage of the entire species, such as the Chinese giant panda.

For example: population, to give a slightly more figurative example, all the students in your class can be seen as a population. It is defined as a collection of organisms of the same species in an area. Another example: carp in a pond is also a population, etc.

Community, of course, is the sum of all living things in a certain area, and it has a certain composition, structure, and function. For example, all living organisms (including plants, animals, and microorganisms) in the school playground are a community.

The boundaries of this community are sometimes not particularly obvious, as most of the time the boundaries are artificially demarcated.

How to distinguish between populations and communities? For example... How to distinguish between populations and communities? Here's an example.

Answer The population is in a certain natural area, and all the individuals of the same species of organisms are a population example: all the individual communities of the same species of turtle in the area are in a certain natural area, and all the populations form a community Example: The population of turtles and all other organisms in the area.

1. Population refers to all individuals of the same species that occupy a certain space within a certain period of time. Individuals in a population are not mechanically grouped together, but can mate with each other and pass on their genes to their offspring through reproduction. Population is the basic unit of evolution, and all organisms in the same population share a gene pool.

The study of populations mainly focuses on their quantitative changes and intraspecific relationships, and the content of interspecific relationships has belonged to the study of biological communities.

2. Community is also known as biological community. Biome refers to the collection of populations of various species distributed in a certain space within a certain period of time, including the populations of various species such as animals, plants, and microorganisms, which together form a living part of the ecosystem.

The various populations of organisms that make up a community are not arbitrarily put together, but are regularly combined to form a stable community. For example, the various biological populations in the farmland ecosystem are grouped together according to people's needs, rather than due to their complex nutritional relationships, so the farmland ecosystem is extremely unstable, and it is easy to be replaced by the grassland ecosystem without the human factor.