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The "sink function" describes an environment's ability to absorb and render harmless waste and pollution: when waste output exceeds the limit of the sink function, long-term damage occurs. [ 46 ] : 8 Some persistent pollutants, such as some organic pollutants and nuclear waste are absorbed very slowly or not at all; ecological economists ...
The ecology of metapopulations is a dynamic process of extinction and colonization. Small patches of lower quality (i.e., sinks) are maintained or rescued by a seasonal influx of new immigrants. A dynamic metapopulation structure evolves from year to year, where some patches are sinks in dry years and are sources when conditions are more favorable.
A microbial mat is a multi-layered sheet or biofilm of microbial colonies, composed of mainly bacteria and/or archaea. Microbial mats grow at interfaces between different types of material, mostly on submerged or moist surfaces, but a few survive in deserts. [1] A few are found as endosymbionts of animals.
Organisms living at the edge of hydrothermal vent fields, such as pectinid scallops, also carry endosymbionts in their gills, and as a result their bacterial density is low relative to organisms living nearer to the vent. However, the scallop's dependence on the microbial endosymbiont for obtaining their nutrition is therefore also lessened.
Sink web - one or more node(s), all of their prey, all the food that these prey eat, and so on. Community (or connectedness) web - a group of nodes and all the connections of who eats whom. Energy flow web - quantified fluxes of energy between nodes along links between a resource and a consumer.
A mussel bed at the edge of the brine pool During this initial stage, when methane is relatively abundant, dense mussel beds also form near the cold seep. [ 3 ] Mostly composed of species in the genus Bathymodiolus , these mussels do not directly consume food; [ 3 ] Instead, they are nourished by symbiotic bacteria that also produce energy from ...
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