AC-Ch. 12 Tree Assessment And Risk Management Flashcards Preview

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Flashcards in AC-Ch. 12 Tree Assessment And Risk Management Deck (33)
1

Decay of the lower trunk, trunk flare or butress roots.

Basal rot

2

Fungal wood rot characterized by the breakdown of cellulose

Brown rot

3

In determining legal liability the test of the proximate cause and foreseeability of the consequences.

Causation in fact

4

Open or closed hollow within a tree stem usually associated with decay

Cavity

5

Fruiting body or nonfruiting body (sterile) of a fungus. Often associated with decay

Conk

6

Any device used to assess the presence of hidden internal decay

Decay detection device

7

Legal obligation that requires an individual to use a reasonable standard of care when performing tasks that may potentially harm others.

Duty of care

8

In tree risk assessment the professional assessment of the likelihood for a tree to fail within a defined period of time

Failure potential

9

Reproductive structure of a fungus. The presence of certain species may indicate decay in a tree.

Fruiting body

10

Any of several types of fungal decay of tree heartwood often beginning with infected wounds in the living portions of wood tissue.

Heartwood rot

11

Device used to take core samples from trees to determine age or detect problems such as decay

Increment borer

12

Something for which one is responsible. Legal responsibility

Liability

13

General term used to indicate the magnitude of a force, bending moment, torque, pressure etc. applied to a substance or material.

Load

14

Cargo; weight to be borne or conveyed.

Load

15

In tree risk management, reducing, alleviating or minimizing risk of harm.

Mitigation

16

Failure to exercise due care

Negligence

17

Legal term that describes an act or omission that can be attributed as cause if loss and/or injury.

Proximate cause

18

Wood formed in leaning or crooked stems or on lower or upper sides of branches as a means of counteracting the effects of gravity

Reaction wood

19

Non-destructive means of determining the soundness or structural integrity of an object or material by determining the rate at which sound waves travel through it.

Resonance testing

20

Process of evaluating what unexpected things could happen, how likely they are to happen and what the likely outcomes are. In tree management the systematic process to determine the level of risk posed by a tree tree part or group of trees

Risk assessment

21

Systematic application of management policies, procedures and practices for identifying, evaluating, treating, monitoring and communication risk

Risk management

22

Process of removing soil to expose and assess the root collar of a tree

Root collar excavation

23

Decay located in the sapwood. Bark and/or cambium may be damaged or dead. Signs of this classification of rot are usually numerous, but small, fruiting bodies along the bark's surface are common.

Sapwood rot

24

Decay of plant tissues characterized by the breakdown of tissues within the cell walls.

Soft rot

25

Degree of care that a reasonable person should exercise in performing duty of care; a measurement used to assess whether an individual acted in a reasonable manner

Standard of care

26

Any naturally occurring or secondary conditions such as cavities, poor branch attachments, cracks or decayed wood in the trunk, crown or roots of a tree in that may contribute to structural failure.

Structural defects

27

Change in diameter over the length of trunks, branches and roots

Taper

28

Person, object or structure that could be harmed by a tree or tree part in the event of failure.

Target

29

Location of target pruning

Target

30

Image generated by tomography. Created by sending waves through an object; a computer then produces images of cross sections of the object by using information about how the waves change

Tomogram

31

Method of assessing the structural integrity of trees using external symptoms of mechanical stress and defects.

Visual tree assessment

32

Fungal decay of wood in which both cellulose and lignin are broken down.

White rot

33

Device that directs a jet of highly compressed air to excavate soil. Used within the root zone of trees to avoid or minimize damage to the roots or near underground structures such as pipes and wires.

Air excavator