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isa 2022 > Glossary E > Flashcards

Glossary E Flashcards

1
Q

plant communities that first develop followinfg disturbance. Succession is the replacement of one plant community by another

A

early-successional plant communities

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2
Q

portion of an annual ring formed during the spring, characterized by large cells and thin walls, often lighter in color. Also called springwood. Contrast with latewood.

A

earlywood

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3
Q

drill bit with a wide, threaded shank used for drilling holes in the ground. See soil auger

A

earth auger

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4
Q

legal interest in real property that conveys use or partial use, but not ownership, of a portion of an owner’s property

A

easement

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5
Q

the study of the relationships between organisms and other living and non-living elements of their environment..

A

ecology

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6
Q

pest population or plant damage level at which the cost of inaction is less than the cost of action (see action threshold).

A

economic threshold

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7
Q

complex system of living organisms and their abiotic environment

A

ecosystem

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8
Q

the benefits people obtain from ecosystems

A

ecosystem services

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9
Q

type of mycorrhizae that grow between the cortical or epidermal cells of absorbing roots, forming an outer sheath around the root. See mycorrhizae. Contrast with endomycorrhizae

A

ectomycorrhizae

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10
Q

watery swelling in plant tissue

A

edema

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11
Q

EHS cable

A

extra-high-strength cable

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12
Q

conductors used to transmit electric energy and their necessary supporting or containing structures.

A

electric supply lines

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13
Q

corporation, person, agency, authority, or other legal entity or instrumentality aligned with distribution facilities for delivery of electric energy for use primarily by the public

A

electric utility

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14
Q

any object, material, or medium through which an electrical current can flow. Electric supply lines are designed as electrical conductors; however, guy wires, communication cables, tools, equipment, vehicles, humans, animals, and other items can function as electrical conductors.

A

electrical conductor

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15
Q

amount of electricity passing through an electrical conductor. Measured in amps

A

electrical current

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16
Q

difference in electric charge between an energized conductor and the ground or other object. Measured in volts.

A

electrical potential

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17
Q

relative opposition of an object, material, or medium to the flow of electrical current. Measured in ohms. Material such as copper has low resistance and is therefore a good conductor; material such as glass has high resistance and is therefore a good insulator.

A

electrical resistance

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18
Q

unintended redirection of electrical current to ground, interrupting the flow of electricity. If the path of an electrical short runs through a person, severe injury or death may result

A

electrical short

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19
Q

aerial platforms used on work sites in place of ladders and tower scaffolds

A

elevating work platform (EWP)

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20
Q

air bubbles in the xylem typically entering during periods of drought or injury.

A

embolism

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21
Q

rudimentary plant in the seed before it starts a period of rapid growth….

A

embryo

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22
Q

holes in the bark created by insects leaving the plant to complete their life-cycle. Also called exit holes.

A

emergence holes

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23
Q

emergency response predetermined set of procedures by which emergency situations are assessed and handled

A

emergency response

24
Q

knots tied at the end of a line (such as a bowline or clove hitch).

A

endline knots

25
Q

loop created in the end of a rope by forming any of numerous knots.

A

endline loop

26
Q

type of mycorrhizae that grow within root cells. See mycorrhizae. Contrast with ectomycorrhizae

A

endomycorrhizae

27
Q

electrical conductor through which electrical current is flowing and is thus energized. This may be intended and expected or the unintended and unexpected result of an electrical short

A

energized conductor

28
Q

potential to do work

A

energy

29
Q

material used as a construction base that is different from the surrounding soil profile and has a known compaction rate or load-bearing capacity.

A

engineered fill

30
Q

term describing a leaf margin without teeth

A

entire

31
Q

shoot arising from a latent or adventitious bud (growth point)

A

epicormic shoot

32
Q

outer tissue of leaves, stems, roots, flowers, and seeds

A

epidermis

33
Q

downward curling of the leaf blade resulting from more rapid cell growth on the upper side of the petiole than on the lower side. Often a symptom of plant disease. Distortion of growth, often caused by certain types of herbicides.

A

epinasty

34
Q

nonparasitic plant that uses another plant as a host for mechanical support only but does not derive nutrients or water from it. Contrast with parasite and saprophyte.

A

epiphyte

35
Q

total removal of a species from a particular area. May refer to pathogens or insect pests or to unwanted plants.

A

eradication

36
Q

mites in the family Eriophyidae. Often even smaller than other mites and requiring higher magnification to see. Often associated with leaf galls (see mites).

A

eriophyid mites

37
Q

the wearing away of the land by the movement of water, wind, or ice

A

erosion

38
Q

in felling operations, direction for chain saw operator to move while tree is falling. Generally 45 degrees on either side of a line drawn opposite the intended direction of fall.

A

escape route

39
Q

(1) (noun) specialized technique of pruning and training plants to grow within a plane, such as along a wall or a fence. (2) (noun) a plant trained in that manner. (3) (verb) to train plants in that manner.

A

espalier

40
Q

17 minerals essential to the growth and development of trees. These minerals are essential because plants cannot complete their life cycle without them. See macronutrient, micronutrient, and primary elements.

A

essential elements

41
Q

to grow, or cause a plant ot grow, successfully in a new place. In forestry, may refer to initial planting and care; in landscaping, may refer to care after planting until the plant is growing successfully.

A

establish

42
Q

plant growth regulator used to promote fruit ripening. Also stimulates latex flow in rubber trees.

A

ethephon

43
Q

gaseous plant hormone that triggers fruit ripening and plant senescence

A

ethylene

44
Q

loss of water by evaporation from the soil surface and transpiration by plants.

A

evapotranspiration (ET)

45
Q

tree or other plant that does not shed all of its foliage annually. Contrast with deciduous..

A

evergreen

46
Q

growth habit characterized by a central leader and a pyramidal crown. Contrast with decurrent

A

excurrent tree

47
Q

peeling off in shreds or layers. Usually refers to bark.

A

exfoliating

48
Q

not native or indigenous to a region. May be invasive. Contrast with introduced species, native species, and naturalized species.

A

exotic species

49
Q

ability of a root to resume its original direction of growth after being deflected by an object

A

exotropy

50
Q

type of 7-strand steel cable, often used to cable trees. Stronger but less flexible than common-grade cable. Must be terminated with dead-end tree grips.

A

extra-high-strength (EHS) cable

51
Q

oozing from pores or breaks in cell membranes.

A

exudation

52
Q

cable anchor with a closed eye, usually machine threaded. Only drop-forged eye bolts are accepted and approved for tree support systems in the United States

A

eye bolt

53
Q

(1) in cabling, a closed termination loop, hand formed in common-grade cable by wrapping the successive strands back upon the standing part to attach the cable to anchor hardware. (2) a splice that forms a closed eye or loop.

A

eye splice

54
Q

length of rope that has been spliced back upon itself to form an eye in the end

A

eye-spliced rope

55
Q

sling (usually a length of spliced rope) with an eye at each end. Also called eye-and-eye sling

A

eye-to-eye sling

isa 2022 (13 decks)

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