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1. Despite the importance of Llangorse Lake as the largest natural body of fresh water in South Wales, no long‐term limnological project has ever been planned for the lake. 2. A mass of data is available from sampling carried out at intervals since 1961, but these visits were for various reasons...
1. The deterioration in biodiversity of Llangorse Lake has been attributed to eutrophication, power‐boating or a combination of the two. 2. Nutrient input responsible for the eutrophication of Llangorse Lake has been attributed to sewage effluent. This study examines potential contributions from...
1. The first recorded effects of human activity on the aquatic flora of Llangorse Lake, South Wales, were the result of introductions of Elodea canadensis in the early 1900s and of Nymphoides peltata in 1936, altering the species balance of both submerged and floating plant communities. 2. The...
1. Foveaux Strait, a narrow seaway that is exposed to heavy wave action and strong tidal currents, has been the subject of an oyster fishery for over 130 years. Before the oyster fishery commenced the seafloor was extensively covered by epifaunal reefs that were tidally‐oriented, linear...
1. Some Mediterranean sponge species belonging to the genera Spongia and Hippospongia, have been harvested for commercial purposes since ancient times. Recently, a widespread epidemic has greatly reduced the density of sponge populations which has had serious repercussions in the commercial...
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