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  2. Dominance (ecology) - Wikipedia

    en.wikipedia.org/wiki/Dominance_(ecology)

    Ecological dominance is the degree to which one or several species have a major influence controlling the other species in their ecological community (because of their large size, population, productivity, or related factors) [1] or make up more of the biomass. Both the composition and abundance of species within an ecosystem can be affected by ...

  3. Dominance (genetics) - Wikipedia

    en.wikipedia.org/wiki/Dominance_(genetics)

    Autosomal dominant and autosomal recessive inheritance, the two most common Mendelian inheritance patterns. An autosome is any chromosome other than a sex chromosome.. In genetics, dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome.

  4. Habitat - Wikipedia

    en.wikipedia.org/wiki/Habitat

    The physical factors may include (for example): soil, moisture, range of temperature, and light intensity. Biotic factors include the availability of food and the presence or absence of predators. Every species has particular habitat requirements, habitat generalist species are able to thrive in a wide array of environmental conditions while ...

  5. Ecosystem - Wikipedia

    en.wikipedia.org/wiki/Ecosystem

    For example, ecosystems can be quite different if situated in a small depression on the landscape, versus one present on an adjacent steep hillside. [ 9 ] : 39 [ 10 ] : 66 Other external factors that play an important role in ecosystem functioning include time and potential biota , the organisms that are present in a region and could ...

  6. Ecological niche - Wikipedia

    en.wikipedia.org/wiki/Ecological_niche

    The ecological meaning of niche comes from the meaning of niche as a recess in a wall for a statue, [7] which itself is probably derived from the Middle French word nicher, meaning to nest. [ 8 ] [ 7 ] The term was coined by the naturalist Roswell Hill Johnson [ 9 ] but Joseph Grinnell was probably the first to use it in a research program in ...

  7. Biological rules - Wikipedia

    en.wikipedia.org/wiki/Biological_rules

    The pygmy mammoth is an example of insular dwarfism, a case of Foster's rule, its unusually small body size an adaptation to the limited resources of its island home.. A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms.

  8. Biome - Wikipedia

    en.wikipedia.org/wiki/Biome

    For example, the human microbiome is the collection of bacteria, viruses, and other microorganisms that are present on or in a human body. [ 3 ] A biota is the total collection of organisms of a geographic region or a time period, from local geographic scales and instantaneous temporal scales all the way up to whole-planet and whole-timescale ...

  9. Marine coastal ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_coastal_ecosystem

    A marine coastal ecosystem is a marine ecosystem which occurs where the land meets the ocean. Worldwide there is about 620,000 kilometres (390,000 mi) of coastline. Coastal habitats extend to the margins of the continental shelves, occupying about 7 percent of the ocean surface area.