Algae

Algae
A cluster of primitive, mainly aquatic plants that have chlorophyll-a as their primary photosynthetic pigment. Algae, unlike most other plants, are not made up of a root, stem and leaf system.

Algae: Chiefly aquatic, eucaryotic one-celled or multicellular plants without true stems, roots and leaves, which are typically autotrophic, photosynthetic, and contain chlorophyll. Algae are not typically found in groundwater.

Harmful algae blooms (HAB) are the sudden proliferation of one or more species of microscopic plants (algae or phytoplankton), which live in the ocean and produce neurotoxins that can cause negative and sometimes fatal effects in shellfish, fish, ...

algae
Any of various primitive, chiefly aquatic, one-or multi-celled, nonflowering plants that lack true stems, roots, and leaves, but usually contail chlorophyl.

Algae: Rootless plants that grow in sunlit waters in relative proportion to the amounts of nutrients available. They can affect water quality adversely by lowering the dissolved oxygen in the water.

Algae: an evolutionarily diverse group of non-vascular plants that lack structural complexity, that do not develop as embryos with covering provided by parent; ...

Algae
Simple rootless plants that grow in sunlit waters in proportion to the amount of available nutrients. They can affect water quality adversely by lowering the dissolved oxygen in the water. They are food for fish and small aquatic animals.

Algae
The simplest kind of green plants, usually found growing in damp or wet places.
Aqueduct ...

algae. Microscopic plants which contain chlorophyll and live floating or suspended in water. They also may be attached to structures, rocks or other submerged surfaces. They are food for fish and small aquatic animals.

Algae blooms: Rapid growth of algae on the surface of lakes, streams, or ponds; stimulated by nutrient enrichment.
Aliquot: A measured portion of a sample taken for analysis. One or more aliquots make up a sample.

Algae
Simple rootless plants that grow in sunlit waters, on rocks and in soil, in proportion to the amount of available nutrients. They can affect water quality adversely by lowering the dissolved oxygen in the water.

algae Simple plants, without roots, stems, or leaves, containing chlorophyll. Algae vary in size from less than 1.0 micrometer to brown algae (kelp) over 700 feet long.

Algae
Single- or multi-celled organisms that are commonly found in surface water, such as duckweed. They produce their own food through photosynthesis.

Algae
Microscopic plants usually found in aquatic environments, which are capable of photosynthesis.
Alkali ...

Algae having siliceous ceil walls that persist as a skeleton after death. These microscopic unicellular or colonial algae belong to the class Bacillariophyceae.

algicide algaecide
Substance intended to kill algae.
aliquot (in analytical chemistry)
Known amount of a homogeneous material, assumed to be taken with negligible sampling error.
Note 1: The term is usually applied to fluids.

Some contain compounds which kill useful bacteria and encourage algae growth when they are in wastewater that reaches receiving waters. Disinfectant A chemical or physical process that kills pathogenic organisms in water.

algae Simple rootless plants that grow in bodies of water in relative proportion to the amounts of nutrients available. Algal blooms reduce the amount of dissolved oxygen in lakes and rivers and can result in fish kills.

phytoplankton that portion of the plankton community composed of algae and cyanobacteria
phytotrophy photosynthesis or photoautotrophy in organisms that possess chlorophyll a and that use water as an electron donor in reducing carbon ...

Microbes Microorganisms: any microscopic organism, including bacteria, viruses, unicellular algae and protozoans, and microscopic fungi such as yeasts. Microbivores Animals that feed on microorganisms.

algae and diatoms). planetary albedo The fraction (approximately 30%) of incident solar radiation that is reflected by the earth-atmosphere system and returned to space, mostly by backscatter from clouds in the atmosphere.

A green pigment, present in algae and higher plants, that absorbs light energy and thus plays a vital role in photosynthesis. Except in Cyanophyta (blue-green algae), chlorophyll is confined to chloroplasts.

Bacteria and pathogen levels are usually low, but some bacteria, protozoa or algae will be present. Where uplands are forested or peaty, humic acids can colour the water. Many upland sources have low pH which require adjustment.

Coral bleaching: The process that takes place when corals lose the microscopic organisms called algae that live within their tissues. These algae provide the coral with nutrients, and they’re responsible for the color of the coral.

Eutrophication - Eutrophication is a process whereby water bodies, such as lakes, estuaries, or slow-moving streams receive excess nutrients that stimulate excessive plant growth (algae, periphyton attached algae, and nuisance plants weeds).

hypoxia - the depletion of dissolved oxygen in water, a condition resulting from an overabundance of nutrients of human or natural origin that stimulates the growth of algae, ...

Periphyton: Plants, usually algae, attached to rocks or other instream objects.
pH: Measure of acidity. Stands for Òthe negative logarithm of free hydrogen ionsÓ in water. Water of low pH is acidic; high pH is basic, or alkaline.

significant occurence of insects or other microorganisms, algae, or large-diameter pathogens; 2.

Microorganisms
Bacteria, yeasts, simple fungi, algae, protozoans, and a number of other organisms that are microscopic in size. Most are beneficial but some produce disease. Others are involved in composting and sewage treatment.

Algal Bloom: large, visible masses of algae found in bodies of water during warm water.
Alkalinity: capacity of water to neutralize acids by its content of bicarbonates, carbonates, or hydroxides.

Bloom- A proliferation of algae and/or higher aquatic plants in a body of water; often related to pollution, especially when pollutants accelerate growth.

Algicide - Substance or chemical used specifically to kill or control algae.
Aromatic - A type of hydrocarbon, such as benzene or toluene, added to gasoline in order to increase octane. Some aromatics are toxic.

Microorganisms
microscopic living creatures; bacteria, protozoa, fungi and algae
Microwave disinfection unit
equipment that shreds clinical waste and disinfects it with steam and microwave radiation ...

Shallow, murky bodies of water with concentrations of plant nutrients causing excessive production of algae. (See dystrophic lakes.)
Source: Terms of the Environment
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Renewable material resources include algae, grasses and some fast-growing trees. Substituting renewable resources for nonrenewable resources (e.g., coal, oil, gasoline and other fossil fuels) is the key to sustainability.

third generation biofuels: biofuel (see above) made from fast-growing algae, which could be grown cheaply in oceans.

Microorganisms: Microscopic organisms including bacteria, protozoans, yeast, fungi, mold, viruses, and algae.

Autotrophs A group of organisms capable of obtaining carbon for synthesis from inorganic carbon sources such as carbon dioxide and its dissolved species (the carbonates). This group includes plants and algae.
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Some bacteria, such as cyano bacteria (previously known as blue-green algae), use sunlight (photosynthesis) to combine inorganic chemicals to make the organic nutrient compounds they need to live.

See also: Water, Environment, Waste, Air, Environmental