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  2. 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 ...

  3. 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.

  4. Environmental gradient - Wikipedia

    en.wikipedia.org/wiki/Environmental_gradient

    Although environmental gradients are comprised gradually changing and predictable patterns of an abiotic factor, there is strong interplay between both biotic-biotic factors as well as biotic-abiotic factors. For example, species abundance usually changes along environmental gradients in a more or less predictable way.

  5. Lake ecosystem - Wikipedia

    en.wikipedia.org/wiki/Lake_ecosystem

    Temperature is an important abiotic factor in lentic ecosystems because most of the biota are poikilothermic, where internal body temperatures are defined by the surrounding system. Water can be heated or cooled through radiation at the surface and conduction to or from the air and surrounding substrate. [ 6 ]

  6. Aquatic ecosystem - Wikipedia

    en.wikipedia.org/wiki/Aquatic_ecosystem

    An ecosystem is composed of biotic communities that are structured by biological interactions and abiotic environmental factors. Some of the important abiotic environmental factors of aquatic ecosystems include substrate type, water depth, nutrient levels, temperature, salinity, and flow.

  7. Environmental factor - Wikipedia

    en.wikipedia.org/wiki/Environmental_factor

    An environmental factor, ecological factor or eco factor is any factor, abiotic or biotic, that influences living organisms. [1] Abiotic factors include ambient temperature , amount of sunlight , air, soil, water and pH of the water soil in which an organism lives.

  8. 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).

  9. River ecosystem - Wikipedia

    en.wikipedia.org/wiki/River_ecosystem

    This stream operating together with its environment can be thought of as forming a river ecosystem. River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.