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  2. Biotic material - Wikipedia

    en.wikipedia.org/wiki/Biotic_material

    Biotic materials in soil include humic substances such as humic acids, fulvic acids and humin. Some biotic material may not be considered to be organic matter if it is low in organic compounds , such as a clam 's shell, which is an essential component of the exoskeleton of bivalve mollusks made of calcium carbonate ( CaCO 3 ), but contains ...

  3. Resource (biology) - Wikipedia

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

    In biology and ecology, a resource is a substance or object in the environment required by an organism for normal growth, maintenance, and reproduction. Resources can be consumed by one organism and, as a result, become unavailable to another organism. [1] [2] [3] For plants key resources are light, nutrients, water, and space to

  4. Natural resource - Wikipedia

    en.wikipedia.org/wiki/Natural_resource

    Natural resources can be a substantial part of a country's wealth; [7] however, a sudden inflow of money caused by a resource extraction boom can create social problems including inflation harming other industries ("Dutch disease") and corruption, leading to inequality and underdevelopment, this is known as the "resource curse".

  5. Ecological niche - Wikipedia

    en.wikipedia.org/wiki/Ecological_niche

    A vague answer to this question is that the more similar two species are, the more finely balanced the suitability of their environment must be in order to allow coexistence. There are limits to the amount of niche differentiation required for coexistence, and this can vary with the type of resource, the nature of the environment, and the ...

  6. Abiotic component - Wikipedia

    en.wikipedia.org/wiki/Abiotic_component

    Abiotic components include physical conditions and non-living resources that affect living organisms in terms of growth, maintenance, and reproduction. Resources are distinguished as substances or objects in the environment required by one organism and consumed or otherwise made unavailable for use by other organisms.

  7. Ecosystem - Wikipedia

    en.wikipedia.org/wiki/Ecosystem

    From one year to another, ecosystems experience variation in their biotic and abiotic environments. A drought, a colder than usual winter, and a pest outbreak all are short-term variability in environmental conditions. Animal populations vary from year to year, building up during resource-rich periods and crashing as they overshoot their food ...

  8. Realized niche width - Wikipedia

    en.wikipedia.org/wiki/Realized_niche_width

    Realized niche width is a phrase relating to ecology, is defined by the actual space that an organism inhabits and the resources it can access as a result of limiting pressures from other species (e.g. superior competitors).

  9. Biodiversity - Wikipedia

    en.wikipedia.org/wiki/Biodiversity

    The existence of a global carrying capacity, limiting the amount of life that can live at once, is debated, as is the question of whether such a limit would also cap the number of species. While records of life in the sea show a logistic pattern of growth, life on land (insects, plants and tetrapods) shows an exponential rise in diversity. [ 10 ]