Species diversity is a term used to define the different number of species in an area Species richness and its abundance and the distribution of these species in that ecosystem. You could have high species richness but low abundance and therefore, low species diversity in an ecosystem.
An aquarium with many different species of animals, but very few individuals of each species confined to a small space is an example. Likewise, you could have an ecosystem with high abundance, low species richness and therefore, low species diversity. An Oak forest is an example of this. Most of the trees in the forest are Oak; other tree species are limited in numbers and have poor distribution throughout the forest. Large scale interactions are important, because it ensures that the ecosystem will not collapse after a short while.
For example-. This is an example of a food web which clearly shows high species richness so many different organisms. Now imagine an ecosystem where only a maximum of 5 individuals of each organism is present low abundance : low species diversity. All conservation efforts that focus on species diversity need to improve species richness and abundance and their spatial distribution. Usually found sitting with a good book, nibbling on a piece of dark chocolate.
Always ready for a good story. View all posts by Saurab Babu. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. An interesting product of this classification exercise was that species in these three groups differ in their ability to survive disturbances. For example, fish species with low juvenile survivorship, low number of offspring, and with early maturity tend to be successful in habitats with unpredictable droughts or floods.
Species with a different suite of life history traits such as low juvenile survivorship, high number of offspring, and late maturity cannot survive unpredictable flood or drought disturbances. Gotelli, N. Quantifying biodiversity: procedures and pitfalls in the measurement and comparison of species richness. Ecology Letters 4 , Pyron, M.
Stability of the fish assemblages of the Wabash River from Freshwater Biology 51 , Taylor, C. Regional parapatry of the congeneric cyprinids Lythrurus snelsoni and L. Copeia , Winemiller, K. Patterns of life history diversification in North American fishes: implications for population regulation. Canadian Journal of Fisheries and Aquatic Sciences 49 , Predation, Herbivory, and Parasitism. Characterizing Communities. Species with a Large Impact on Community Structure. Successional Changes in Communities.
Effects of Biogeography on Community Diversity. Community Ecology Introduction. Avian Egg Coloration and Visual Ecology.
Causes and Consequences of Biodiversity Declines. Disease Ecology. The Ecology of Avian Brood Parasitism. Elemental Defenses of Plants by Metals. The Maintenance of Species Diversity. Neutral Theory of Species Diversity.
Abiotically-Mediated Direct and Indirect Effects. Biological Stoichiometry. Sampling Biological Communities. Succession: A Closer Look. Dynamics of Predation. Ecological Consequences of Parasitism. Resource Partitioning and Why It Matters.
Direct and Indirect Interactions. Keystone Species. Citation: Pyron, M. Nature Education Knowledge 3 10 Ecological communities are associations of species that co-occur in the same location at the same time. Community ecology is a field that examines the effects of abiotic and biotic features on community or assemblage structure. Aa Aa Aa. Figure 1: Species evenness and species richness for animalcule communities. Both communities contain five species of animalcules.
Figure 2: Abundances of fish species in the Wabash River. The abundances of fish species that were collected in the Wabash River from References and Recommended Reading Gotelli, N.
Ludwig, J. Statistical Ecology. Hoboken, NY: John Wiley, Pielou, E. Ecological Diversity. New York: John Wiley, Preston, F. The commonness, and rarity, of species. Ecology 29 , Article History Close. Share Cancel. Revoke Cancel. Keywords Keywords for this Article. Save Cancel. Flag Inappropriate The Content is: Objectionable. In the image below, community one would have a greater species diversity because the spread of species is more even.
What is the difference between species diversity and species richness? Kate M. Dec 28, Explanation: Species richness is the number of species found in a community or ecosystem. Related questions What is the Law of Tolerance? Can you explain how evolution and biodiversity are related? What are some examples of an ecological niche?
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