A broad term which encompasses elements and compounds that are required by plants and animals for growth and survival. In the area of water quality the term is generally used with only phosphorus and nitrogen in mind, though there are many other elements that living organisms require for survival.
These are components of food that help nourish the body: that is, theyprovide energy or serve as "building materials." These nutrients include carbohydrates, fats, proteins,vitamins, minerals, water, etc.
Any chemical element or compound essential to life, including carbon, oxygen, nitrogen, phosphorus. When available in excess quantities, these function as pollutants by fueling abnormally high organic growth in waterbodies.
substances such as nitrogen and phosphorus compounds necessary for growth and survival. Elevated levels can cause unwanted growth of algae, and can result in the lowering of the amount of oxygen in the water when the algae die and decay.
Mineral elements in the forest ecosystem such as nitrogen, phosphorus, or potassium usually in soluble compounds that are present naturally, or may be added to the forest environment as forest chemicals, such as fertilizer.
Substance obtained from food and utilized by the body to provide energy and promote growth, maintenance and/or repair (for example, carbohydrates, proteins, vitamins, minerals and water). They are necessary for all bodily functions.
Compounds of nitrogen and phosphorus dissolved in water which are essential to both plants and animals. Too much nitrogen and phosphorus act as pollutants and can lead to unwanted consequences - primarily algae blooms that cloud the water and rob it of oxygen critical to most forms of aquatic life. Sewage treatment plants, industries, vehicle exhaust, acid rain, and runoff from agricultural, residential and urban areas are sources of nutrients entering the Bay.
Mineral or organic substances (elements or chemical compounds) that plants and animals require for normal growth and activity. Plants and trees obtain nutrients primarily from the soil by absorbing them through their roots.
Chemical compounds or elements required by all living organisms for growth, reproduction, and the maintenance of homeostasis. Most commonly, measurements are taken from water samples to determine the concentration of nutrients required by plants (e.g., primary producers). For plants, inorganic macronutrients (i.e., nutrients required in relatively large amounts) include nitrate, nitrite, ammonium, and phosphates. Inorganic micronutrients (i.e., nutrients required in relatively small amounts) include copper, molybdenum, and magnesium. Organic nutrients include amino acids and vitamins.
Any organic or inorganic element or combination contained in food and that can be used directly by the human organism to be assimilated in the cells without being previously transformed by the digestion. Nutrients are generally classified as: carbohydrates, lipids, proteins, vitamins, mineral salts etc. Back
a group of chemicals present in food that provide energy, cell building and structural materials, and body chemistry regulating agents known to be essential for life. Nutrients are classes into: proteins, fats, carbohydrates (includes energy rich sugars), vitamins, minerals, and water.
The minerals and other materials that provide food for living organisms. Traditionally, nitrogen, phosphorus and potassium are thought of as the most important elemental nutrients for streams and lakes.
Elements required for plant or animal growth, including the macronutrients (nitrogen, phosphorus, and potassium), which are the major nutrients required and micronutrients, which include a number of other elements that are essential but needed in lesser amounts.
Substances that are essential for the growth of marine organisms that perform primary production (algae, bacteria, and plants). Excess nutrients, especially nitrogen and phosphorous, can be major pollutants.
The elements needed by plants for normal growth and health. The major nutrients (MACRONUTRIENTS) are nitrogen (N), phosphorus (P), and potassium (K), but there are numerous MICRONUTRIENTS (also called TRACE ELEMENTS) which also have integral roles in maintaining plant health. A good quality hydroponic nutrient formula will contain all of the major nutrients and micronutrients needed by the vast majority of plants.
the necessary components of food that microbes and all life require to exist and grow. Essential elemental nutrients include such basic molecules as nitrogen, carbon, oxygen, hydrogen, phosphorus, potassium and trace minerals.
Essential chemicals needed by plants and animals for growth. Excessive amounts of nutrients, nitrogen, and phosphorus, for example, can lead to degradation of water quality and growth of excessive amounts of algae. Some nutrients can be toxic at high concentrations.
Essential chemicals needed by plants or animals for growth. If other physical and chemical conditions are optimal, excessive amounts of nutrients can lead to degradation of water quality by promoting excessive growth, accumulation, and subsequent decay of plants, especially algae. Some nutrients can be toxic to animals at high concentrations.
Elements, or compounds, essential as raw materials for organism growth and development, such as carbon, nitrogen, phosphorus, etc. (USEPA, 1993). Perennial plant A plant that has a life span of 3 or more years (USEPA, 1993). Pesticide Any chemical agent used for control of plant or animal pests. Pesticides include insecticides, herbicides, fungicides, nematocides, and rodenticides.
Substances derived from foods that are necessary for the functioning of the human body including proteins, carbohydrates, fats, vitamins, and minerals. The body in three ways uses nutrients: to permit growth and repair of its tissues, to furnish energy and heat and to regulate body processes.
Substances needed for growth by plants and animals. Phosphorus and nitrogen are two examples. To help plants grow, we generally apply fertilizer which contains nutrients like phosphorus and nitrogen. In a lake, too many nutrients can lead to algal blooms.
chemical compounds in a usable form for plants and/or animals. Obligate: refers to the inability to change metabolic pathways, mode of feeding, or ecological relationships; restricted to specific environmental conditions.
Substances which are required to support living plants and organisms. Major nutrients are carbon, hydrogen, oxygen, sulfur, nitrogen and phosphorous. Nitrogen and phosphorous are difficult to remove from wastewater by conventional treatment processes because they are water soluble and tend to recycle.
Mineral elements in the forest ecosystem such as nitrogen, phosphorus, or potassium, that are naturally present or may be added to the forest environment by forest practices such as fertilizer or fire retardant applications. Substances necessary for the growth and reproduction of organisms. In water, those substances that promote growth of algae and bacterial; chiefly nitrates and phosphates.
a variety of chemical compounds that are necessary to promote growth of plants and animals. In the marine environment, the most common nutrient that is limiting for plant growth is nitrogen in the form of nitrate (NO3-).
Nutritional substances. Unnaturally high levels of nutrients, such as in a river below a sewage treatment plant, can encourage abnormally fast and prolific growth of algae in the water, or weed growth in the bush.
Any inorganic or organic substance needed by plants and animals for nutrition and growth (e.g., nitrogen, phosphorus). In water resources, excessive amounts of nutrients can lead to degradation of water quality by promoting excessive growth, accumulation, and subsequent decay of plants, especially algae.
any of a group of elements necessary for growth; about 15 elements are necessary for aquatic plant growth but are usually available in natural waters; low levels of nitrogen or phosphorus may limit plant growth in surface waters; high levels may cause excess plant and phytoplankton growth.