What are source-sink population dynamics?

What are source-sink population dynamics?

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.

What is the source to sink theory?

The “Source and Sink Theory”, simply indicates that “if there is a source, it must be at least one sink (at the same instance), with a flow pattern from source to the sink, and the process must be conserved”.

What do you mean by resource sinks?

A “sink” is defined as a process that receives anthropogenic material flows that have no positive value for present societies.

Who proposed source and sink theory?

Chen et al.
This paper is based on an application of source-sink dynamics to landscapes; this was first proposed by Chen et al. in the context of nonpoint source pollution, and is known as source-sink landscape theory [4, 5].

When would you Reclassify a sink as a pseudo sink?

Moreover, many studies have failed to assess density dependence hence precluding a distinction between a ‘true sink’ and a ‘pseudo-sink’ (Watkinson & Sutherland 1995). A ‘pseudo-sink’ arises when density-dependent immigration into a source causes an increase in total mortality or a depression in fecundity.

What is source and sink in thermodynamics?

A reservoir that supplies energy in the form of heat is called a source and one that absorbs energy in the form of heat is called a sink. For example, atmospheric air is a source for heat pumps and a sink for air conditioners.

What is sinking input?

A sinking input or output circuit provides a path to ground for the electric load. A sourcing input or output provides the voltage source for the electric load.

What is sinking in PLC?

in plc sink means plc accepted voltage from sensor or input side while source means plc cpu output voltage.

What is a sink in a biogeochemical cycle?

In the context of a biogeochemical cycle, a sink is a reservoir that provides storage for a substance. For example, the process of photosynthesis in plants removes carbon dioxide from the atmosphere and the carbohydrates produced by the plants represent a storage reservoir.