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Upon a bloom's conclusion, the dead algae sink to the bottom and are broken down until all oxygen is expended. Such a case is the Gulf of Mexico where a seasonal dead zone occurs, which can be disturbed by weather patterns such as hurricanes and tropical convection.
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.
Dead and dying European carp in Lake Albert.Fish kills are often a sign of environmental stress. Oxygen enters the water through diffusion.The amount of oxygen that can be dissolved in water depends on the atmospheric pressure, the water temperature and whether the water is salty. [7]
Satellite photo of an algal bloom in western Lake Erie, July 28, 2015. NASA Earth ObservatoryMidsummer is the time for forecasts of the size of this year’s “dead zones” and algal blooms in ...
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.
Most have an unidentified water-soluble toxin found in all parts of the plant. Extremely poisonous, yet attractive, to cats, causing acute renal failure; as few as two petals of the flowers can kill. [citation needed] Lolium temulentum: darnel, poison ryegrass Poaceae
Orchid blooms drop off eventually from natural causes, of course, but if the flowers are falling off prematurely, there may be a problem. 1. Sudden Temperature Changes
Basil leaves are glossy and ovulate, with smooth or slightly toothed edges that typically cup slightly; the leaves are arranged oppositely along the square stems. [7] Leaves may be green or purple. Its flowers are small and white, and grow from a central inflorescence, or spike, that emerges from the central stem atop the plant.