Search results
Results From The WOW.Com Content Network
Facilitation Model. Based on the assumption that only particular species with qualities ideal for "early succession" can colonize the newly exposed landforms after an ecological disturbance. These "colonizing" qualities include: highly effective methods of dispersal, the ability to remain dormant for long periods of time, and a rapid growth rate.
[2] [3] On the other hand, secondary succession happens after disturbance of a community, such as from a fire, severe windthrow, or logging. Succession was among the first theories advanced in ecology. Ecological succession was first documented in the Indiana Dunes of Northwest Indiana and remains an important ecological topic of study. [4]
The Leslie matrix is a discrete, age-structured model of population growth that is very popular in population ecology named after Patrick H. Leslie. [1] [2] The Leslie matrix (also called the Leslie model) is one of the most well-known ways to describe the growth of populations (and their projected age distribution), in which a population is closed to migration, growing in an unlimited ...
The cyclic model of succession can be displayed in terms of a transition matrix. Based on the Markov chain, the matrix describes the likelihood of future states based on the milieu of present states. [5] The three states in the simplest cyclic model are open substrate (usually a bare patch of land), Species A dominance, and Species B dominance.
One example of primary succession takes place after a volcano has erupted. The lava flows into the ocean and hardens into new land. The resulting barren land is first colonized by pioneer organisms, like algae, which pave the way for later, less hardy plants, such as hardwood trees, by facilitating pedogenesis, especially through the biotic acceleration of weathering and the addition of ...
[3] Mechanistic models: model the underlying processes directly, with functions and distributions that are based on theoretical reasoning about ecological processes of interest. [3] Ecological models can be deterministic or stochastic. [3] Deterministic models always evolve in the same way from a given starting point. [4]
SDMs are used in several research areas in conservation biology, ecology and evolution. These models can be used to understand how environmental conditions influence the occurrence or abundance of a species, and for predictive purposes (ecological forecasting). Predictions from an SDM may be of a species’ future distribution under climate ...
He concluded that r/K theory was a once useful heuristic that no longer serves a purpose in life history theory. [ 43 ] More recently, the panarchy theories of adaptive capacity and resilience promoted by C. S. Holling and Lance Gunderson have revived interest in the theory, and use it as a way of integrating social systems, economics, and ecology.