Clumping is a behavior in an organism, usually sessile, in which individuals of a particular species group close to one another for beneficial purposes.
[1] Usually, clumping in sessile animals starts when one organism binds to a hard substrate, such as rock, and other members of the same species attach themselves afterwards.
[3] Clumping and increased locomotion has been found to occur with organisms such as blue mussels (Mytilus edulis) due to risks from predators such as the European lobster (Homarus gammarus).
[4] Clumping has been practiced by bivalve organisms from the times of the fossil record, and the trade-offs between living quite an aggregated lifestyle.
Quadrat sampling, a favored method by ecologists to study the density of populations, is not as effective with criteria such as those groups that are clumped.
Firstly, these types of spiders prefer environments with the ability to attract insect prey and have favorable thermal properties.
In addition, just small changes in genetic similarity can cause major shifts the outcome of evolution for organisms, such as increased output of vital materials for survival and growth.