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An example of ecological stability . In ecology, an ecosystem is said to possess ecological stability (or equilibrium) if it is capable of returning to its equilibrium state after a perturbation (a capacity known as resilience) or does not experience unexpected large changes in its characteristics across time. [1]
Eutely has been confirmed to certain degrees in various forms of diversity and sections of the tree of life.Examples include rotifers, many species of nematodes (including ascaris and the organism Caenorhabditis elegans whose male individuals have 1,033 cells [3] [4]), tardigrades, larvaceans and dicyemida.
The probability with which a portion of the niche colonized is dependent on the relative sizes of the established niches, and is scaled by an exponent k. k can take a value between 0 and 1 and if k>0 there is always a slightly higher probability that the larger niche will be colonized.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Bergmann's rule - Penguins on the Earth (mass m, height h) [1] Bergmann's rule is an ecogeographical rule that states that, within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions.
Relative abundance is the percent composition of an organism of a particular kind relative to the total number of organisms in the area. [citation needed] Relative species abundances tend to conform to specific patterns that are among the best-known and most-studied patterns in macroecology. Different populations in a community exist in ...
Competition among plants for light is size-asymmetric because of the directionality of its supply. [2] Higher leaves shade lower leaves but not vice versa. Competition for nutrients appears to be relatively size-symmetric, [9] although it has been hypothesized that a patchy distribution of nutrients in the soil may lead to size asymmetry in competition among roots.
C-value is the amount, in picograms, of DNA contained within a haploid nucleus (e.g. a gamete) or one half the amount in a diploid somatic cell of a eukaryotic organism. In some cases (notably among diploid organisms), the terms C-value and genome size are used interchangeably; however, in polyploids the C-value may represent two or more genomes contained within the same nucleus.