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While many chimpanzees are naturally hydrophobic, Sakamaki (1998) found that those in Mahale have been observed to submerge themselves into freshwater and eat algae. [7] This observation is the first documentation of a primate using algae in the wild as a food source and is an important marker of possible adaptation in the species.
Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to other organisms, or by other means.
Some predatory algae have evolved extreme survival strategies. For example, Oxyrrhis marina can turn cannibalistic on its own species when no suitable non-self prey is available, [ 11 ] and Pfiesteria and related species have been discovered to kill and feed on fish, and since have been (mistakenly) referred to as carnivorous "algae" by the media.
Florida's southwest coast experienced a flare-up of the toxic red tide algae this week, setting off concerns that it could continue to stick around for a while. Dead fish have washed up on beaches.
Cloudy water can be a warning that there are more germs in the water than normal. Discolored or smelly water could mean there is a harmful algal bloom in the water.
Home composting can limit landfill waste and therefore, methane emissions as well. [7] When food waste is thrown out and ends up in waterways, it can contribute to algae blooms. [25] Algae blooms can produce toxic emissions that have harmful health effects on mammals and organisms, including humans. [30]
Schizochytrium-based omega-3 supplements for human consumption. Certain species produce large amounts of docosahexaenoic acid (DHA) [4] and are grown commercially for production of algae oil for animal feeds, biomass, biofuels and direct human consumption in supplements and additives. [5]
The exact LD 50 for humans is unknown; for mice the LD 50 is 3.6 mg/kg. [ 6 ] New research has found that domoic acid is a heat-resistant and very stable toxin, which can damage kidneys at concentrations that are 100 times lower than what causes neurological effects.