Factors that affect biodiversity in an ecosystem include area, climate, and diversity of niches. Which human activities threaten biodiversity?
What factor represents an ecosystem’s biodiversity?
Several factors contribute to species diversity, including habitat diversity, competition among species, and genetic diversity. Genetic diversity within a species not only is necessary to maintain diversity among species,6 but also contributes to the diversity of food, fiber, and medicines available from nature.
What two factors affect biodiversity?
Biological diversity can be quantified in many different ways. The two main factors taken into account when measuring diversity are richness and evenness. Richness is a measure of the number of different kinds of organisms present in a particular area.
How can you determine an ecosystem’s biodiversity?
One way to measure biodiversity is to assess species richness of an ecosystem, which is the total number of distinct species within a local community. While having many species generally coincides with having a diverse and healthy ecosystem, the evenness also needs to be considered.
What factors go into measuring biodiversity?
Biodiversity is defined and measured as an attribute that has two components — richness and evenness.
What two factors influence the biodiversity of an island?
Terms in this set (29) The number of species found on an island is determined by a balance between two factors: the immigration rate (of species new to the island) from other inhabited areas and the extinction rate (of species established on the island).
What are the 3 factors that make up biodiversity?
Levels of biodiversity
- Biodiversity is usually explored at three levels – genetic diversity, species diversity and ecosystem diversity. These three levels work together to create the complexity of life on Earth. …
- Species diversity. …
- Ecosystem diversity.
What are the two components of species diversity?
Species diversity has two primary components: species richness (the number of species in a local community) and species composition (the identity of the species present in a community).
What are two ways you can measure biodiversity?
Species diversity can be measured using the Simpson Index or the Shannon-Wiener Diversity Index. There’s also genetic diversity, which is the genetic variability within a species. This can be measured by looking at phenotypic traits or using molecular methods.
What is Alpha Beta and Gamma biodiversity?
Alpha diversity the diversity within a particular area or ecosystem; usually expressed by the number of species (i.e., species richness) in that ecosystem Beta diversity a comparison of of diversity between ecosystems, usually measured as the amount of species change between the ecosystems Gamma diversity a measure of …
What are the possible factors that causes decline in the biodiversity in an ecosystem?
CAUSES OF BIODIVERSITY LOSS
- Climate change.
- Destruction of habitats.
- Invasive alien species.
- Overexploitation of the natural environment.
- Extinction of species.
- Threat to human beings.
- Proliferation of pests.
What is the 1 cause of biodiversity loss?
Biodiversity loss is caused by five primary drivers: habitat loss, invasive species, overexploitation (extreme hunting and fishing pressure), pollution, climate change associated with global warming.
Which of the following are biotic factors in an ecosystem?
Biotic factors are living or once-living organisms in the ecosystem. These are obtained from the biosphere and are capable of reproduction. Examples of biotic factors are animals, birds, plants, fungi, and other similar organisms.