Viruses cause diseases of animals, plants and bacteria. Decompose wood and other organic material 4. produce an enzyme used in the polymerase chain reaction (PCR) 5. absorb carbon dioxide from the atmosphere and produce oxygen gas 6. cause diseases in plants and animals Prototheca species are generally considered to be achlorophyllic algae. The dinoflagellates (class Dinophyceae) are the most notorious producers of toxins. 1. It’s also increasingly killing sea otters, especially adults in their prime — and now scientists know why. They may be helpful or destructive to a plant depending on the species. The cause. The blue-green colour comes from their ability to photosynthesize, like plants. Cyanobacterial toxins are classified by how they affect the human body. Form associations called lichens with algae or cyanobacteria 3. Algae. Myxomatosis, foot and mouth disease and fowl pox are important diseases of animals which are caused by viruses. Nearby fertilizer applications, septic systems, wildlife, and animal manure can all add significant amounts of nutrients, resulting in excessive plant growth. They are found in fresh waters, polar regions, tropics, marine environment, etc. Algae - Algae - Toxicity: Some algae can be harmful to humans. protothecosis can be local or disseminated and acute or chronic, with the latter being more common. In a new study out Thursday, scientists say they’ve solved the mystery of a neurological disease that’s been killing bald eagles and other birds in the U.S. for over 25 years. Miller, the wildlife vet, has been tracking another deadly otter affliction—Toxoplasma, a common parasite that causes a disease called toxoplasmosis and is usually spread by domestic cats. Dinoflagellates literally means _____. Pond Algae and Water Plants Control Abundant plant and algae growth is a serious issue that can cause eutrophication and water ecosystems impairment. List of Plant Diseases Caused by Nematodes. A few species produce toxins that may be concentrated in shellfish and finfish, which are thereby rendered unsafe or poisonous for human consumption. Can HABs make you sick? Harmful algal blooms (also known as HABs) result from the rapid growth, or bloom, of The algae and cyanobacteria also reduce the levels of oxygen in the water when they decompose, and these lower oxygen levels may kill other plants and animals in the water. Cyanobacteria are also known as blue-green algae, so named because these organisms have characteristics of both algae and bacteria, although they are now classified as bacteria. Some of the better known virus diseases of man are poliomyelitis, measles, mumps and the common cold. large dangerous algae poisonous algae ... Dutch elm disease, which has killed millions of elm trees, is caused by a type of _____ fungus. 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