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- Freshwater_ecosystem abstract "Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes and ponds, rivers, streams and springs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content. Freshwater habitats can be classified by different factors, including temperature, light penetration, and vegetation.Freshwater ecosystems can be divided into lentic ecosystems (still water) and lotic ecosystems (flowing water).Limnology (and its branch freshwater biology) is a study about freshwater ecosystems. It is a part of hydrobiology.Original efforts to understand and monitor freshwater ecosystems were spurred on by threats to human health (ex. Cholera outbreaks due to sewage contamination). Early monitoring focussed on chemical indicators, then bacteria, and finally algae, fungi and protozoa. A new type of monitoring involves differing groups of organisms (macroinvertebrates, macrophytes and fish) and the stream conditions associated with them. Current biomonitering techniques focus mainly on community structure or biochemical oxygen demand. Responses are measured by behavioural changes, altered rates of growth, reproduction or mortality. Macroinvertebrates are most often used in these models because of well known taxonomy, ease of collection, sensitivity to a range of stressors, and their overall value to the ecosystem. Most of these measurements are difficult to extrapolate on a large scale however.The use of reference sites is common when assessing what a healthy freshwater ecosystem should “look like”. Reference sites are easier to reconstruct in standing water than moving water. Preserved indicators such as diatom valves, macrophyte pollen, insect chitin and fish scales can be used to establish a reference ecosystem representative of a time before large scale human disturbance.Common chemical stresses on freshwater ecosystem health include acidification, eutrophication and copper and pesticide contamination.".
- Freshwater_ecosystem thumbnail Freshwater_angelfish_biodome.jpg?width=300.
- Freshwater_ecosystem wikiPageExternalLink %28ISSN%291365-2427.
- Freshwater_ecosystem wikiPageExternalLink sfc274.pdf.
- Freshwater_ecosystem wikiPageID "762047".
- Freshwater_ecosystem wikiPageRevisionID "593055051".
- Freshwater_ecosystem hasPhotoCollection Freshwater_ecosystem.
- Freshwater_ecosystem subject Category:Aquatic_ecology.
- Freshwater_ecosystem subject Category:Aquatic_plants.
- Freshwater_ecosystem subject Category:Ecosystems.
- Freshwater_ecosystem subject Category:Fisheries_science.
- Freshwater_ecosystem subject Category:Freshwater_ecology.
- Freshwater_ecosystem subject Category:Freshwater_ecoregions.
- Freshwater_ecosystem subject Category:Limnology.
- Freshwater_ecosystem subject Category:Systems_ecology.
- Freshwater_ecosystem subject Category:Water.
- Freshwater_ecosystem type Fisheries.
- Freshwater_ecosystem type Fishery103350880.
- Freshwater_ecosystem type GeographicPoint108578706.
- Freshwater_ecosystem type Location100027167.
- Freshwater_ecosystem type Object100002684.
- Freshwater_ecosystem type PhysicalEntity100001930.
- Freshwater_ecosystem type Point108620061.
- Freshwater_ecosystem type Workplace104602044.
- Freshwater_ecosystem type YagoGeoEntity.
- Freshwater_ecosystem type YagoLegalActorGeo.
- Freshwater_ecosystem type YagoPermanentlyLocatedEntity.
- Freshwater_ecosystem comment "Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes and ponds, rivers, streams and springs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content.".
- Freshwater_ecosystem label "Ecosistema de agua dulce".
- Freshwater_ecosystem label "Freshwater ecosystem".
- Freshwater_ecosystem label "النظام البيئي للمياه العذبة".
- Freshwater_ecosystem label "陸水生物学".
- Freshwater_ecosystem sameAs Ecosistema_de_agua_dulce.
- Freshwater_ecosystem sameAs 陸水生物学.
- Freshwater_ecosystem sameAs m.0398bb.
- Freshwater_ecosystem sameAs Q2890135.
- Freshwater_ecosystem sameAs Q2890135.
- Freshwater_ecosystem sameAs Freshwater_ecosystem.
- Freshwater_ecosystem wasDerivedFrom Freshwater_ecosystem?oldid=593055051.
- Freshwater_ecosystem depiction Freshwater_angelfish_biodome.jpg.
- Freshwater_ecosystem isPrimaryTopicOf Freshwater_ecosystem.