Theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms.- Source–sink dynamics
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A metapopulation consists of a group of spatially separated populations of the same species which interact at some level.
The development of metapopulation theory, in conjunction with the development of source–sink dynamics, emphasised the importance of connectivity between seemingly isolated populations.
Set of interacting communities which are linked by the dispersal of multiple, potentially interacting species.
These are the patch dynamics, species sorting, source–sink dynamics (or mass effect) and neutral model frameworks.
Plant disorder that is most common on light, sandy soils, because potassium ions are highly soluble and will easily leach from soils without colloids.
Potassium also functions in other physiological processes such as photosynthesis, protein synthesis, activation of some enzymes, phloem solute transport of photoassimilates into source organs, and maintenance of cation:anion balance in the cytosol and vacuole.
Oxygen cycle refers to the movement of oxygen through the atmosphere (air), Biosphere (plants and animals) and the Lithosphere (the earth’s crust).
Processes within the oxygen cycle are considered to be biological or geological and are evaluated as either a source (O2 production) or sink (O2 consumption).
Subfield of genetics that deals with genetic differences within and between populations, and is a part of evolutionary biology.
It can be used to infer the relationships between species (phylogenetics), as well as the population structure, demographic history (e.g. population bottlenecks, population growth), biological dispersal, source–sink dynamics and introgression within a species.
Use of native plants, including trees, shrubs, groundcover, and grasses which are indigenous to the geographic area of the garden.
Plants in a garden or maintained landscape often form a source population from which plants can colonize new areas.
Cross-boundary subsidies are caused by organisms or materials that cross or traverse habitat patch boundaries, subsidizing the resident populations.
The idea of a subsidy of materials or organisms across a patch boundary affecting resident populations has clear parallels with source-sink dynamics (Fagan et al. 1999).
Species of plant pathogenic nematodes.
Xiphinema americanum is a plant parasite that lives entirely in the soil and is attracted to young, growing roots due to source–sink dynamics.
Relationship between the abundance of species and the size of their ranges within a region.
For species exhibiting this pattern, dispersal into what would otherwise be sub-optimal habitats can occur when local abundances are high in high quality habitats (see Source–sink dynamics), thus increasing the size of the species geographic range.
Concept in ecology, in which an organism obtains protection from predation by hiding in an area where it is inaccessible or cannot easily be found.
In human-managed systems like these, heavily hunted areas act as a sink in which animals die faster than they reproduce, but are replaced by animals migrating from the protected nature reserve area.