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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, sometimes called a red tide in marine environments, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to ...
Anatoxin-a is a neurotoxin produced by multiple genera of freshwater cyanobacteria that are found in water bodies globally. [3] Some freshwater cyanobacteria are known to be salt tolerant and thus it is possible for anatoxin-a to be found in estuarine or other saline environments. [4]
A ten day Health Advisory was calculated for different ages which is considered protective of non-carcinogenic adverse health effects over a ten-day exposure to microcystins in drinking water: 0.3 μg/L for bottle-fed infants and young children of pre-school age and 1.6 μg/L for children of school age through adults. [50]: 28–29
[218] [220] Recent chromium isotope data point to low levels of atmospheric oxygen in the Earth's surface during the mid-Proterozoic, [216] which is consistent with the late evolution of marine planktonic cyanobacteria during the Cryogenian; [221] both types of evidence help explain the late emergence and diversification of animals.
The sighting was of a female crayfish walking with her young at Lake Balboa in Los Angeles, according to the U.S. Fish and Wildlife Service. More: 6 animals that mate for life: See the enduring ...
The jellyfish live off a diet of phytoplankton or zooplankton as well as the eggs and larvae of other aquatic animals such as fish. [4] Cyanea lamarkii use their tentacles containing nematocysts to not only catch their prey, but to protect from predators.
JEREMY: "This is the biggest fish of my South American fishing career. A river monster as deadly as any beast of folklore." Like always, Jeremy tossed the fish back in the water.
Some animals can act as sentinels because they may be more susceptible or have greater exposure to a particular hazard than humans in the same environment. [1] People have long observed animals for signs of impending hazards or evidence of environmental threats. Plants and other living organisms have also been used for these purposes.