Can species richness be used as an indicator of ecosystem productivity?
The huge amount of work on the effects of species richness on ecosystem function have generally shown that with greater plant species richness, you tend to have increased primary productivity, nutrient uptake and greater stability to disturbances.
Abstract Recent overviews have suggested that the relationship between species richness and productivity (rate of conversion of resources to biomass per unit area per unit time) is unimodal (hump-shaped).
What effect does species richness have on the productivity and stability of an ecosystem?
Increasing species diversity can influence ecosystem functions — such as productivity — by increasing the likelihood that species will use complementary resources and can also increase the likelihood that a particularly productive or efficient species is present in the community.
Why does species richness increase productivity?
Using data from more than 400 published experiments, an international research team has found overwhelming evidence that biodiversity in the plant kingdom is very efficient in assimilating nutrients and solar energy, resulting in greater production of biomass. …
Why do species rich ecosystem tend to be productive and sustainable?
Explain why species-rich ecosystems tend to be productive and sustainable. The more diverse an ecosystem is the more productive it will be along with more stable/sustainable. A place with different species provides more food options and better ways to respond to stressful environmental changes.
How does species richness affect the ecosystem?
Increased alpha diversity (the number of species present) generally leads to greater stability, meaning an ecosystem that has a greater number of species is more likely to withstand a disturbance than an ecosystem of the same size with a lower number of species.
What is productivity in an ecosystem?
In ecology, productivity is the rate at which energy is added to the bodies of organisms in the form of biomass. … Productivity can be defined for any trophic level or other group, and it may take units of either energy or biomass. There are two basic types of productivity: gross and net.
Does a community with high species richness have greater sustainability and productivity?
The study “increased the [species] richness… such that the feeding success of individuals [was] enhanced.” A greater species richness and diversity may cause ecosystems to function more efficiently and productively by making more resources available for other species within the ecosystem.
How is productivity of an ecosystem measured?
The total amount of biological productivity in a region or ecosystem is called the gross primary productivity. … Primary productivity is usually determined by measuring the uptake of carbon dioxide or the output of oxygen. Production rates are usually expressed as grams of organic carbon per unit area per unit time.
How do species impact the stability of an ecosystem?
Greater biodiversity in ecosystems, species, and individuals leads to greater stability. For example, species with high genetic diversity and many populations that are adapted to a wide variety of conditions are more likely to be able to weather disturbances, disease, and climate change.
What impacts do invasive species have on an ecosystem?
Invasive species can harm both the natural resources in an ecosystem as well as threaten human use of these resources. … Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats.
What are the three key factors that influence species richness in an ecosystem?
The factors related to these patterns of small- scale species richness include (1) geographic factors such as scale of observation, available species pool and dispersal patterns, (2) biotic factors such as competition or predation and (3) abiotic environmental factors such as site resource availability, disturbance and …