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  2. Environmental gradient - Wikipedia

    en.wikipedia.org/wiki/Environmental_gradient

    The abiotic factors that environmental gradients consist of can have a direct ramifications on organismal survival. Generally, organismal distribution is tied to those abiotic factors, but even an environmental gradient of one abiotic factor yields insight into how a species distribution might look.

  3. Realized niche width - Wikipedia

    en.wikipedia.org/wiki/Realized_niche_width

    Again, these changes are important in understanding the effects of invasive species in a new habitat. The ability of a new species to change an environments abiotic and biotic factors can make a previously habitable environment for a species uninhabitable. The extinction of this species can further change the biotic factors of an environment.

  4. Persistent, bioaccumulative and toxic substances - Wikipedia

    en.wikipedia.org/wiki/Persistent,_bio...

    The low degradation rates of PBTs allow these chemicals to be exposed to both biotic and abiotic factors while maintaining a relatively stable concentration. Another factor that makes PBTs especially dangerous are the degradation products which are often relatively as toxic as the parent compound.

  5. Ecosystem - Wikipedia

    en.wikipedia.org/wiki/Ecosystem

    [2]: 458 The biotic and abiotic components are linked together through nutrient cycles and energy flows. Ecosystems are controlled by external and internal factors. External factors such as climate, parent material which forms the soil and topography, control the overall structure of an ecosystem but are not themselves influenced by the ecosystem.

  6. Abiotic component - Wikipedia

    en.wikipedia.org/wiki/Abiotic_component

    Humans can make or change abiotic factors in a species' environment. For instance, fertilizers can affect a snail's habitat, or the greenhouse gases which humans utilize can change marine pH levels. Abiotic components include physical conditions and non-living resources that affect living organisms in terms of growth, maintenance, and ...

  7. Competition (biology) - Wikipedia

    en.wikipedia.org/wiki/Competition_(biology)

    Competition is one of many interacting biotic and abiotic factors that affect community structure, species diversity, and population dynamics (shifts in a population over time). [3] There are three major mechanisms of competition: interference, exploitation, and apparent competition (in order from most direct to least direct).

  8. Invasibility - Wikipedia

    en.wikipedia.org/wiki/Invasibility

    The relative efficiency of invasibility is dependent on the abiotic niche being conserved over time or if the invader is able to adapt rapidly to their newly invaded abiotic niche. [6] For example, the Asian shore crab (Hemigrapsus sanguineus) has almost identical abiotic niches in its native and invaded habitat [7] but the European Green Crab ...

  9. Latitudinal gradients in species diversity - Wikipedia

    en.wikipedia.org/wiki/Latitudinal_gradients_in...

    It differs from most other hypotheses in not postulating an upper limit to species richness set by various abiotic and biotic factors, i.e., it is a nonequilibrium hypothesis assuming a largely non-saturated niche space. It does accept that many other factors may play a role in causing latitudinal gradients in species richness as well.