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The gap analysis process itself was conceived in the 1980s, by J. Michael Scott, at the University of Idaho. He developed methods to assess endangered birds in Hawaii and began by mapping the distribution of each species individually. Then he combined data on individual species to create a map of species richness throughout the island.
Species distribution modelling (SDM), also known as environmental (or ecological) niche modelling (ENM), habitat modelling, predictive habitat distribution modelling, and range mapping [1] uses ecological models to predict the distribution of a species across geographic space and time using environmental data. The environmental data are most ...
This strict form of ecological fitting can also be expressed either as colonization of new habitat or the formation of new species interactions. [ 2 ] [ 5 ] Since ecological fitting presupposes the agency of organisms and the choices they make, and therefore the meaning-making, the concept has been generalised as semiotic fitting.
Functional equivalence of the animal species consuming and dispersing the seeds can account for the ability for these plants to continue to survive without genetic changes to their fruit/seed morphology. [3] As with the Hormathophylla example above, the plant species are not subjected to selective pressures the same way that animals are.
Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.. Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population.
Biotic homogenization is the process by which two or more spatially distributed ecological communities become increasingly similar over time. This process may be genetic, taxonomic, or functional, and it leads to a loss of beta (β) diversity. [1]
Most of the time, a book with an HEA is thought of as something that happens in romance novels: the guy and the girl go through some hard times, but everything comes together flawlessly by the end ...
Species naturally migrate and expand their ranges, utilising new habitats and resources, e.g. the cattle egret.These natural invasions, an incursion in the absence of anthropogenic influences, occur "when an intervening barrier is removed, or through the development of biotic or abiotic transportation mechanisms, able to overcome the barrier in question". [3]