SRM Glossary

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| K (8)
| L (23)
| M (24)
| N (14)
| O (16)
| P (71)
| Q (1)
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| S (89)
| T (32)
| U (12)
| V (10)
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| X (1)
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| Z (1)
Term Description Source
DBH

Abbr. diameter at breast height of a tree

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Death Loss

The number of animals in a herd that die from various natural and accidental causes. Usually expressed as a percentage.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Debris

Accumulated plant and animal remains.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Deciduous (Plant)

Plant parts, particularly leaves, that are shed at regular intervals, or at a given stage of development, i.e. a deciduous plant regularly loses or sheds its leaves. cf. evergreen

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Decomposer

Heterotrophic organisms, chiefly the microorganisms, that break down the bodies of dead animals or parts of dead plants and absorb some of the decomposition products while releasing similar compounds usable by producers.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Decreaser

For a given plant community, those species that decrease in amount as a result of a specific abiotic/biotic influence or management practice.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Deferment

The delay of grazing to achieve a specific management objective. A strategy aimed at providing time for plant reproduction, establishment of new plants, restoration of plant vigor, a return to environmental conditions appropriate for grazing, or the accumulation of forage for later use. cf. deferred grazing, rotational deferred

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Deferred Grazing

The deferment of grazing in a nonsystematic rotation with other land units. cf. deferment

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Deferred-Rotation

Any grazing system, which provides for a systematic rotation of the deferment among pastures.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Defoliation (rangelands)

The removal of plant leaves, i.e., by grazing or browsing, cutting, chemical defoliant, or natural phenomena such as hail, fire, or frost.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Degree of Use

The proportion of current year's forage production that is consumed and/or destroyed by grazing animals. May refer either to a single species or the vegetation as a whole. Syn. Use

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Density

Numbers of individuals or stems per unit area. Density does not equate to any kind of cover measurement.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dependent Property

Property generally associated with other lands for year-round livestock operation. cf. commensurate property

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Desert

Land on which the vegetation is absent or sparse, often shrubby, and characterized by an arid climate.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Desertification

The process by which an area or region becomes more arid through loss of soil and vegetative cover. The process is often accelerated by excessive continuous overstocking and drought.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Desirable Plant Species

Species which contribute positively to the management objectives.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Desired Plant Community

Of the several plant communities that may occupy a site, the one that has been identified through a management plan to best meet the plan's objectives for the site. It must protect the site as a minimum.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Detritus

Fragmented particulate organic matter derived from the decomposition of debris.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dietary Essentials (Nutrient)

Nutrients that must be orally ingested, in contrast to those which can be manufactured or converted in the animal, such as through microbial symbiosis in the rumen.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dipping

(v.) Immersing animals in specific solutions to control insects or disease.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dipping Vat

A trough made of concrete, wood, or metal for holding solutions in which animals are dipped.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Discounting

The process of determining the present value of a stream of future financial returns.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Diurnal (rangelands)

Active during daylight hours.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Diversity

The distribution and abundance of different plants and animal communities within an area.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Docking

(v.) To surgically shorten an animal's tail

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dogie

Syn. Orphan

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dominant

(1) Plant species or species groups, which by means of their number, coverage, or size, have considerable influence or control upon the conditions of existence of associated species. (2) Those individual animals which, by their aggressive behavior or otherwise, determine the behavior of one or more animals resulting in the establishment of a social hierarchy.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drag

(1) Animals composing the rear of a moving herd. (2) An implement used for control of vegetation, e.g., chain drag.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Draw

A natural watercourse, including the channel and adjacent areas on either side, which may occasionally overflow or receive extra water from higher adjacent areas; generally having intermittent flows associated with higher intensity rainfall.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drenching

(v.) Giving orally a forced dose of a specific solution to an animal, usually to control internal parasites.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drift

(v.) (1) The movement of materials by wind or water. (2) the natural movement of animals. (n.) Vegetative material moved and deposited by wind and water. cf. spray drift

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drift Fence

An open-ended fence used to retard or alter the natural movement of livestock; generally used in connection with natural barriers.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drill Seeding

Planting seed directly into the soil with a drill in rows, usually 6 to 24 inches apart. cf. broadcast seeding

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drip Torch

Portable equipment for applying flammable liquids giving a residual flame upon ignition; primarily used in prescribed burning.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drive

The moving of livestock under human direction. In cowboy parlance, the term drift is often used in lieu of drive when animals are slowly urged in a certain direction.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Driveway

A strip of land specifically designated for the controlled movement of livestock.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drop Band

A band of ewes that is giving birth or is expected to give birth within a few days.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Drouth (Drought)

(1) A prolonged chronic shortage of water, as compared to the norm, often associated with high temperatures and winds during spring, summer and fall. (2) A period without precipitation during which the soil water content is reduced to such an extent that plants suffer from lack of water.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dry Band

A band of ewes without lambs.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dry Meadow

A meadow dominated by grasses which is characterized by soils which become moderately dry by mid-summer. cf. meadow and wet meadow

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dual Use

Grazing the current year's forage production by two species of grazing animals at the same time. cf. common use

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.
Dugout

(1) An artificially constructed depression that collects and stores water and differs from a reservoir in that a dam is not relied upon to impound water. cf. stockpond. (2) A large hole dug in the ground, frequently on the side of a hill, and often covered with logs and sod, used as a dwelling or shelter.

Society for Range Management. 1998. Glossary of terms used in range management, fourth edition. Edited by the Glossary Update Task Group, Thomas E. Bedell, Chairman. Used with permission.