A small trade and research base exists, which trades various items of goods with the aquatic population.

Hallam T.G., Lassiter R.R. and Kooijman S.A.L.M. (1989) - Effects of toxicants on aquatic populations.

Unlike fishing, aquaculture, also known as aquafarming, is the cultivation of aquatic populations under controlled conditions.

Wild fisheries - A fishery is an area with an associated fish or aquatic population which is harvested for its commercial value.

Fish kills may also occur due to the presence of disease, agricultural and sewage runoff, oil or hazardous waste spills, hydraulic fracturing wastewater, sea-quakes, inappropriate re-stocking of fish, poaching with chemicals, underwater explosions, and other catastrophic events that upset a normally stable aquatic population.

Where once hundreds of fishing boats and dozens of canneries were kept busy by the dense aquatic population of the Barents Sea, the local industry is now down to one forlorn factory and a handful of battered vessels.

Rhizophydiales are parasites of a range of organisms, including invertebrates, other chytrids and algae, and they may have a role in natural control of aquatic populations, especially phytoplankton.

In Commercial chicken houses, for example, they seemed to be ubiquitous but the species found vary widely from one location to the next, suggesting that these populations represent local soil and aquatic populations which migrated into the new habitat.

Pollution may result from mine sludge and affect the functioning of the river system at a time when soils are blown away due to exposure and have a significant impact on aquatic populations further implicated by dam building in the region.

It is suspected that the four species of introduced caddisflies Trichoptera are adversely impacting native aquatic invertebrate populations either through competition for space and resources, or because of its large body size and sheer abundance in Hawaiian streams.