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Under Roman law, fishing rights in rivers and lakes were royal property; most sovereigns delegated those rights to monasteries or local vassals, who in turn allocated them to local fishermen as they saw fit. The open water in the middle of the lakes was common fishing ground; the shallows near the shore were reserved for the local landowner.
They state that pollution levels in the lakes do not conform to European rulings and the lack of sewage treatment is illegal. Their 2010 measurements [ 11 ] found samples taken at Ponte Tresa , Osteno and Porto Ceresio to be "heavily polluted" (more than 1,000 UFC/100 ml intestinal enterococci and/or greater than 2000 UFC/100 ml E. coli ).
Plastics accounts for 80% of waste dispersed in the marine and coastal environment of the Mediterranean Sea. [24] Recent studies focus on the types of plastics found and primarily on the issue of microplastics, both at a global but also at a regional level, as in the case of the Mediterranean Sea, which was identified as a "target hotspot of the world" due to its amounts of microplastics ...
Lake Geneva is the largest body of water in Switzerland, and greatly exceeds in size all others that are connected with the main valleys of the Alps. It is in the shape of a crescent, with the horns pointing south, the northern shore being 95 km (59 mi) and the southern shore 72 km (45 mi) in length.
Jack mackerel caught by a Chilean purse seiner Fishing down the food web. Overfishing is the removal of a species of fish (i.e. fishing) from a body of water at a rate greater than that the species can replenish its population naturally (i.e. the overexploitation of the fishery's existing fish stock), resulting in the species becoming increasingly underpopulated in that area.
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List of lakes with a dam in Switzerland with a volume of more than 10 million cubic metres (m³): Dammed lakes with their location, volume, area and depth, as well as information on the relevant dam(s)
This article contains a sortable table listing all major lakes of Switzerland. The table includes all still water bodies located either entirely or partly in Switzerland , both natural and artificial, that have a surface area of at least 30 hectares (74 acres), regardless of water volume, maximum depth or other metric.