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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.
The common source of these disturbances became most dramatically apparent in the populations of our first series of three experiments, in which we observed the development of what we called a behavioral sink. The animals would crowd together in greatest number in one of the four interconnecting pens in which the colony was maintained.
"as a population of populations which go extinct locally and recolonize." [30]: 105 Metapopulation ecology is a simplified model of the landscape into patches of varying levels of quality. [31] Patches are either occupied or they are not. Migrants moving among the patches are structured into metapopulations either as sources or sinks.
From left to right: a field with a source, a field with a sink, a field without either. In the physical sciences, engineering and mathematics, sources and sinks is an analogy used to describe properties of vector fields. It generalizes the idea of fluid sources and sinks (like the faucet and drain of a bathtub) across different scientific ...
Polarized light pollution is perhaps the most compelling and well-documented cue triggering ecological traps. [10] Orientation to polarized sources of light is the most important mechanism that guides at least 300 species of dragonflies, mayflies, caddisflies, tabanid flies, diving beetles, water bugs, and other aquatic insects in their search for the water bodies they require for suitable ...
Population genetics is a subfield of genetics that deals with genetic differences within and among populations, ... source–sink dynamics [76] ...
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If the correlation is high, all populations decline simultaneously reducing recolonization rates of empty patches. [12] This means that if an environmental phenomena diminishes the distributions or abundances of many populations over a large geographical area at the same time, the probabilities of a rescue effect are very low.