Term
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Definition
| Organic matter is generated w/in the community. on site production by self. |
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Term
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Definition
| Organic matter is generated outside ecosystem and transported to it as dead organic matter. off-site production, by diff. organism. |
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Term
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Definition
| The gradual disintegration of dead organic matter. involves the release of energy and the mineralization of nutrients (I.E., the conversion from organic to inorganic form) |
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Term
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Definition
| all grazing pathways are linked to a detritus pathway. upon death, an organism is attacked by decomposers. ex. bacteria & fungi involved in detritus pathways. penicillium, mucor, rhizopus: fungi's that decompose carbohydrates only "sugar fungi" common on moldy bread. |
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Term
| Order of resistance to breakdown for plant tissue |
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Definition
| look on first page of notes |
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Term
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Definition
| Animal consumers of dead organic material. both invertebrates and vertebrates. Invertebrates involved w/ decomp: microfauna-protozoans, nematodes and rotifers. mesofauna (100micro meters -2mm)-mites and springtails. Macrofauna (2mm- 20mm) Megafauna(>20mm)-wood lice, millipedes, earthworms, snails, slugs, beetles. capable of major turnover of D.O.M. Microbial decomposers and detritus act in synergy |
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Term
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Definition
| a monosaccharide, ex. glucose, a straight chain |
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Term
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Definition
| chains of alpha-d-glucose units, coil into a helix |
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Term
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Definition
| Branch-chained polysaccharides |
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Term
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Definition
| polysacharide (exceptionally long chains of d-glucose units) |
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Term
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Definition
| polymers of aromatic alcohols; little understood |
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Term
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Definition
| polysaccharide-like cpds.; primarily galacturonic acid |
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Term
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Definition
| heterogeneous polymer groups of fatty acids waxy material in epidermis of plant leaves |
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Term
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Definition
| fungi that decompose cellulose but leave lignin-based brown residue |
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Term
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Definition
| fungi that decompose lignin, leave a white cellulose residue |
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Term
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Definition
| digest cellulose, lignin and hemicellulose. they refecate (eat their own feces). protozoans in gut digest cellulose; gut bacteria can fix nitrogen, can be 60% of termite body wt. |
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Term
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Definition
| decomp. of cellulose by the shipworm (shellfish). it rasps at wood, maintains a colony of bacteria that perform cellulolysis. the bacteria obtain N from dissolved N in seawater that flows over the shellfish's gills |
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Term
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Definition
| refers to a reservoir for any element (or compound), abiotic or biotic. |
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Term
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Definition
| the route along which any element (or compound) travels, biotic or abiotic |
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Term
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Definition
| the flux rate into or out of a pool divided by the quantity of element in the pool, ex. the rate at which the pool is filled or emptied of the element |
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Term
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Definition
| the quantity of the element in the pool divided by the flux rate into or out of the pool. ex. the time for the pool to be filled or emptied at a given flux rate |
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Term
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Definition
| genetically related individuals living in same place at same time |
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Term
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Definition
| pop's do not change in size via linear manner. chang in pop. is proportional to size of pop. |
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Term
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Definition
| # of individuals per unit area. used because u often can't count all individuals in a pop. |
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Term
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Definition
| the ability to reproduce once and only once in the life-cycle ex. single-broodes |
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Term
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Definition
| the ability to have more than on reproductive event. ex. to be multiple brooded |
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Term
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Definition
| summary of the age (or stage) specific survivorship and fecundity of individuals in a pop. |
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