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Definition
| Bacteria that respire in the absence of free oxygen |
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Definition
| Bacteria that respire in the absence of oxygen |
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Definition
| Plants and bacteria that synthesize food from inorganic nutrients |
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Definition
| The quantity of living matter expressed as grams per unit area or unit volume |
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Definition
| An organism that feeds on animals |
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Definition
| The production of inorganic compounds from inorganic nutrients |
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Definition
| Green pigments found in plants that are essential for conducting photosynthesis |
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Definition
| The depth in the water column at which masses are balanced and pressures are equal |
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Definition
| Microbes, mainly bacteria that convert nonliving organic matter to inorganic compounds including nutrients |
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Definition
| Organisms that extract food from sediments |
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Term
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Definition
| A trophic relation among a variety of organisms that is sustained at its base by organisms that gather bits of nonliving organic material. |
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Definition
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Definition
| A discrete ecological unit consisting of all of its constituent organisms and its total enviroment. |
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Term
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Definition
| A warm current that appears around Christmas off the coast of Ecuador and Peru. |
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Definition
| Animals that feed by sifting through small organisms or nutrients floating in the water. |
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Term
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Definition
| A simplified trophic relation whereby energy is passed in a stepwise fashion from primary producers to herbivores to carnivores |
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Term
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Definition
| A series of food chains that are interconnected, creating a mosaic of pathways for the transfer of energy through a biological community. |
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Term
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Definition
| Animals that feed on plants |
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Term
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Definition
| A food chain where animals feed directly on plants. |
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Term
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Definition
| An animal that feeds principally on plants. |
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Term
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Definition
| Animals and bacteria that require prefabricated food for sustenance. |
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Term
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Definition
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Term
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Definition
| Nutrients required by plants in relitively large quantities in order to photosynthesize and grow. |
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Term
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Definition
| Nutrients that are required in very small amounts by plants in order to photosynthesize. |
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Term
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Definition
| Animals that consume both plants and animals. |
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Definition
| Chemical reactions conducted in the presence of light by plants using chlorophyll whereby carbon dioxide and water are converted into carbohydrates and oxygen. |
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Term
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Definition
| The sudden rapid multiplication of plankton |
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Term
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Definition
| An animal that prays on other organisms |
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Definition
| A chemical process whereby organic matter is oxidized by organisms, releasing energy and CO2. |
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Term
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Definition
| An animal that feeds on dead organic matter. |
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Term
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Definition
| A distinct period of rapid biological productivity of diatoms that occurs around spring. |
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Term
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Definition
| The complex biological processes whereby energy and matter are passed up to successive levels of food webs. |
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Term
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Definition
| A functional or process category for types of feeding by organisms. |
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Definition
| The slow, upward transport of water. |
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Term
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Definition
| A measure of the cloudiness of water. |
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