Habitat loss in the Great Lakes has removed or degraded coastal wetlands, tributary connections, shallow reefs, beaches, dunes, forests and other places that native species use. Filling and draining converted large areas outright. Dams, hardened shorelines, polluted sediment, invasive species and altered water or sediment movement have reduced the ecological function of habitat that remains.…
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Great Bear Lake reaches a recorded maximum depth of 446 meters, or about 1,463 feet. That deepest known water lies in McTavish Arm near Port Radium, on the lake’s eastern side. The figure describes a measured maximum, not a typical depth across the enormous lake. Canada’s official sailing directions say Great Bear Lake has not…
Ocean floor sediment is made of mineral grains eroded from land, microscopic remains of marine organisms, minerals that form in seawater or within sediment, volcanic material and tiny amounts of extraterrestrial dust. The mixture changes dramatically with distance from shore, water depth, biological productivity, currents, climate and the age of the seafloor. There is no…
Saltwater lakes, more precisely called saline lakes, are inland bodies of water containing elevated concentrations of dissolved salts. Most form in closed drainage basins where streams carry dissolved minerals into a lake but no river carries them onward to the ocean. Water leaves mainly through evaporation, while salts remain and become concentrated. Yes, saltwater lakes…
