| dbo:abstract |
While algae growth is a normal part of a lake's ecosystem, excessive blue-green algae blooms are toxic and a hazard to both human and animal ecosystems. They are most often caused by fertilizer run off and sewage, resulting in high concentrations of nitrogen and phosphorus draining into the lake via rivers and surface runoff. In Lake Winnipeg this has been a problem for some time. Very high levels of the algae toxin microcystin closed Victoria Beach off from the public in the summer of 2003. Grand Beach and other settlements along the lake are often closed during summer months due to E. coli and algae-toxin related threats. Immense algae blooms have appeared in the northern part of Lake Winnipeg in the last decade covering hundreds of square kilometers. In 2006, Lake Winnipeg's algae blooms were considered to be the worst algae problem of any large freshwater lake in the world, according to Canadian Geographic. In 2013, Lake Winnipeg was declared the most threatened lake in the world by the Global Nature Fund, due to excessive level of phosphorus. In 2017, it was reported that less than 1% had been removed. (en) |
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wiki-commons:Special:FilePath/AlgaeLW.jpg?width=300 |
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http://www.ec.gc.ca/inre-nwri/default.asp%3Flang=En&n=235D11EB-1&offset=7&toc=show http://home.cc.umanitoba.ca/~gmccullo/LWsat.htm |
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dbt:Original_research dbt:Reflist |
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dbc:Lake_Winnipeg dbc:Algal_blooms dbc:Environment_of_Canada |
| rdfs:comment |
While algae growth is a normal part of a lake's ecosystem, excessive blue-green algae blooms are toxic and a hazard to both human and animal ecosystems. They are most often caused by fertilizer run off and sewage, resulting in high concentrations of nitrogen and phosphorus draining into the lake via rivers and surface runoff. In Lake Winnipeg this has been a problem for some time. (en) |
| rdfs:label |
Lake Winnipeg algae threat (en) |
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freebase:Lake Winnipeg algae threat wikidata:Lake Winnipeg algae threat https://global.dbpedia.org/id/4pz3P |
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wikipedia-en:Lake_Winnipeg_algae_threat?oldid=1117702039&ns=0 |
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