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Clumped distribution, also called aggregated distribution, clumped dispersion or patchiness, is the most common type of dispersion found in nature. In clumped distribution, the distance between neighboring individuals is minimized. This type of distribution is found in environments that are characterized by patchy resources.
A group of clumped mussels on rocks Clumping is a behavior in an organism , usually sessile , in which individuals of a particular species group close to one another for beneficial purposes. Clumping can be caused by the abiotic environment surrounding an organism.
An aggregated distribution, commonly found among predators, parasites, and plants is a highly uneven statistical distribution pattern in which they collect or aggregate in regions. These regions may be widely separated, particularly within animal distributions that are influenced by prey or host densities.
An isotopologue with a doubly substituted bond is therefore slightly more thermodynamically stable, which will tend to produce a higher abundance of the doubly substituted (or “clumped”) species than predicted by the statistical abundance of each heavy isotope (known as a stochastic distribution of isotopes).
Frank Preston advocated the power function based on his investigation of the lognormal species-abundance distribution. [1] If S {\displaystyle S} is the number of species, A {\displaystyle A} is the habitat area, and z {\displaystyle z} is the slope of the species area relationship in log-log space, then the power function species–area ...
Clumping (biology), an organic behavior; Wittenham Clumps, a small group of hills; Clumped isotopes (chemistry), heavy isotopes that are bonded to other heavy isotopes "clump", an iamamiwhoami song; Transit vehicle clumping, when one public transport vehicle falls behind schedule, and another scheduled behind it meets it in the same location
Under a random (Poisson) distribution ICS is expected to equal 0. Positive values indicate a clumped distribution; negative values indicate a uniform distribution. = where s 2 is the variance and m is the mean. If the population obeys Taylor's law
The advantage of hydrogen isotopes over carbon is higher resolution because of larger fractionation. Studying the clumped isotopes of methane provides a new dimension of mixing-constraints. The mixing line in the clumped isotope notation space is a curve rather than a straight line. Fingerprinting pollutant/oil spills.