Details and Metadata

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Methods

The methods followed in the creation of the dataset, including description of field, laboratory and processing steps, and quality control procedures

Past Methods (No longer in use)

  • Aerial surveys
    Started: 1985-07-01
    Ended: 2000-12-31

    360 acre aerial photo blocks taken on a grid of 170 statewide points. Aerial surveys flown in 1985, 1995 and 2000

  • Ground surveys
    Started: 1986-07-01
    Ended: 2006-12-31

    Ground surveys on 84 plots to assess dieback and mortality, conducted the year following the aerial surveys. Surveys conducted in 1986, 1991, 1996, 2001 and 2006

  • Images for stereoscope
    Started: 1985-07-01
    Ended: 2000-12-31

    Bursts of 5 photos taken at each point for use with stereoscope

Dataset Fields

Detailed documentation of the fields comprising the dataset, including the type of measurement, units where applicable, and any controlled vocabularies or code lists present in the data


Field Name Caption Description Additional Information
photo_ptPhoto Point ID

Photo point ID code

Measurement type: Nominal
cellPhoto Cell ID

ID of cell within photo plot point

Measurement type: Nominal
plotPlot ID

Plot ID number

Measurement type: Nominal
treeTree ID

Tree ID number

Measurement type: Nominal
new_histTree History

Tree History Code

Measurement type: Nominal
Hardwood Health Survey Tree History Codes
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Appears in data asMeaning of code
0Surviving
1Ingrowth
2Stump
3Recent dead
4Old dead
5Snag
6Down dead
7Living-missed last survey
vigorTree Vigor

Tree vigor

Measurement type: Ordinal
Hardwood Health Survey Tree Vigor Codes
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Appears in data asMeaning of code
1Healthy
2Light decline
3Moderate decline
4Severe decline
sppSpecies

Tree species

Measurement type: Nominal
Hardwood Health Survey Species Codes
+ show
Appears in data asMeaning
1sugar maple (Acer saccharum) - View ITIS Record
2red maple (Acer rubrum) - View ITIS Record
3striped maple (Acer pensylvanicum) - View ITIS Record
4yellow birch (Betula alleghaniensis) - View ITIS Record
5paper birch (Betula papyrifera) - View ITIS Record
6gray birch (Betula populifolia) - View ITIS Record
7cottonwood (Populus sp.) - View ITIS Record
8white ash (Fraxinus americana) - View ITIS Record
9American beech (Fagus grandifolia) - View ITIS Record
10black cherry (Prunus serotina) - View ITIS Record
11American basswood (Tilia americana) - View ITIS Record
12American elm (Ulmus americana) - View ITIS Record
13hickory spp (Carya sp.) - View ITIS Record
14northern red oak (Quercus rubra) - View ITIS Record
15white oak (Quercus alba) - View ITIS Record
16butternut (Juglans cinerea) - View ITIS Record
17eastern hophornbeam; hophornbeam (Ostrya virginiana) - View ITIS Record
18Canada hemlock; hemlock spruce (Tsuga canadensis) - View ITIS Record
19eastern white pine (Pinus strobus) - View ITIS Record
20red pine (Pinus resinosa) - View ITIS Record
21balsam fir (Abies balsamea) - View ITIS Record
22red spruce (Picea rubens) - View ITIS Record
23white spruce (Picea glauca) - View ITIS Record
24Custom Species Code
25Custom Species Code
dbhDiameter at Breast Height

Diameter of tree at breast height

Measurement type: Ratio
Unit: unavailable
Precision: 0.1
cr_classCrown Class

Crown class ranking

Measurement type: Nominal
Hardwood Health Survey Crown Class Codes
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Appears in data asMeaning of code
1Dominant
2Codominant
3Intermediate
4Overtopped
sawlogsSawlogs

Sawlogs (Unknown)

Measurement type: Interval
Unit: unavailable
Precision: 1
pulpPulp Logs

Pulp Logs (Unknown)

Measurement type: Interval
Unit: unavailable
Precision: 1
crn_compUnknown

Unknown

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Measurement type:
Agent_1Damage-Causing Agent 1

Damage-causing agent 1

Measurement type: Nominal
Hardwood Health Survey Causal Agent Codes
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Appears in data asMeaning of code
1Logging
2Bird/animal
3Other wounds or mechanical
4Stem rot
5Canker
6Sugar maple borer
7Beech bark disease
8Dutch elm disease
9White pine blister rust
10Leaf discoloration
11Other disturbance
12Ice/snow
13Wind
14Wet feet
15Lightning
16Tapping
17Oystershell scale
18Birch leaf miner
19Maple leaf cutter
20Thrips
21Frost
22Other insects
23Unknown
24Weather
25Butternut canker
Agent_2Damage-Causing Agent 2

Damage-causing agent 2

Measurement type: Nominal
Hardwood Health Survey Causal Agent Codes
+ show
Appears in data asMeaning of code
1Logging
2Bird/animal
3Other wounds or mechanical
4Stem rot
5Canker
6Sugar maple borer
7Beech bark disease
8Dutch elm disease
9White pine blister rust
10Leaf discoloration
11Other disturbance
12Ice/snow
13Wind
14Wet feet
15Lightning
16Tapping
17Oystershell scale
18Birch leaf miner
19Maple leaf cutter
20Thrips
21Frost
22Other insects
23Unknown
24Weather
25Butternut canker
Agent_3Damage-Causing Agent 3

Damage-causing agent 3

Measurement type: Nominal
Hardwood Health Survey Causal Agent Codes
+ show
Appears in data asMeaning of code
1Logging
2Bird/animal
3Other wounds or mechanical
4Stem rot
5Canker
6Sugar maple borer
7Beech bark disease
8Dutch elm disease
9White pine blister rust
10Leaf discoloration
11Other disturbance
12Ice/snow
13Wind
14Wet feet
15Lightning
16Tapping
17Oystershell scale
18Birch leaf miner
19Maple leaf cutter
20Thrips
21Frost
22Other insects
23Unknown
24Weather
25Butternut canker
diebackDieback

Crown dieback ranking

Measurement type: Ordinal
Hardwood Health Survey Dieback Codes
+ show
Appears in data asMeaning of code
00%
51 to 5%
106 to 10%
1511 to 15%
2016 to 20%
2521 to 25%
3026 to 30%
3531 to 35%
4036 to 40%
4541 to 45%
5046 to 50%
5551 to 55%
6056 to 60%
6561 to 65%
7066 to 70%
7571 to 75%
8076 to 80%
8581 to 85%
9086 to 90%
9591 to 95%
9996 to 100%
transTransparency

Crown transparency ranking

Measurement type: Ordinal
Hardwood Health Survey Transparency Codes
+ show
Appears in data asMeaning of code
00%
51 to 5%
106 to 10%
1511 to 15%
2016 to 20%
2521 to 25%
3026 to 30%
3531 to 35%
4036 to 40%
4541 to 45%
5046 to 50%
5551 to 55%
6056 to 60%
6561 to 65%
7066 to 70%
7571 to 75%
8076 to 80%
8581 to 85%
9086 to 90%
9591 to 95%
9996 to 100%
Symp_1Symptom 1

First type of symptom

Measurement type: Nominal
Hardwood Health Survey Symptom Codes
+ show
Appears in data asMeaning of code
1Scorch
2Chlorosis
3Small leaves
4Tattering
5Defoliation
6Offcolor leaves
7Dead areas in leaves
8Dead leaves
9Fine twigs dead
10Branches dead
11Flagging
12Broken branches
Loc_1Symptom 1 Location

Location of first symptom

Measurement type: Nominal
Hardwood Health Survey Symptom Location Codes
+ show
Appears in data asMeaning of code
1Upper 1/2
2Lower 1/2
3Side
4Whole tree
percentage_crn_loc1Symptom 1 Crown Percentage

Percentage of crown displaying first symptom

Measurement type: Ordinal
Hardwood Health Survey Precent Crown Affected Codes
+ show
Appears in data asMeaning of code
11-10%
211-25%
326-50%
451-75%
5>75%
causal_ag1Symptom Causal Agent 1

Agent causing first symptom

Measurement type: Nominal
Hardwood Health Survey Causal Agent Codes
+ show
Appears in data asMeaning of code
1Logging
2Bird/animal
3Other wounds or mechanical
4Stem rot
5Canker
6Sugar maple borer
7Beech bark disease
8Dutch elm disease
9White pine blister rust
10Leaf discoloration
11Other disturbance
12Ice/snow
13Wind
14Wet feet
15Lightning
16Tapping
17Oystershell scale
18Birch leaf miner
19Maple leaf cutter
20Thrips
21Frost
22Other insects
23Unknown
24Weather
25Butternut canker
Symp_2Symptom 2

Second type of symptom

Measurement type: Nominal
Hardwood Health Survey Symptom Codes
+ show
Appears in data asMeaning of code
1Scorch
2Chlorosis
3Small leaves
4Tattering
5Defoliation
6Offcolor leaves
7Dead areas in leaves
8Dead leaves
9Fine twigs dead
10Branches dead
11Flagging
12Broken branches
Loc_2Symptom 2 Location

Location of second symptom

Measurement type: Nominal
Hardwood Health Survey Symptom Location Codes
+ show
Appears in data asMeaning of code
1Upper 1/2
2Lower 1/2
3Side
4Whole tree
percentage_crn_loc2Symptom 2 Crown Percentage

Percentage of crown displaying second symptom

Measurement type: Ordinal
Hardwood Health Survey Precent Crown Affected Codes
+ show
Appears in data asMeaning of code
11-10%
211-25%
326-50%
451-75%
5>75%
causal_ag2Symptom Causal Agent 2

Agent causing second symptom

Measurement type: Nominal
Hardwood Health Survey Causal Agent Codes
+ show
Appears in data asMeaning of code
1Logging
2Bird/animal
3Other wounds or mechanical
4Stem rot
5Canker
6Sugar maple borer
7Beech bark disease
8Dutch elm disease
9White pine blister rust
10Leaf discoloration
11Other disturbance
12Ice/snow
13Wind
14Wet feet
15Lightning
16Tapping
17Oystershell scale
18Birch leaf miner
19Maple leaf cutter
20Thrips
21Frost
22Other insects
23Unknown
24Weather
25Butternut canker

Sampling Equipment

Equipment and software used to collect data, including how that equipment was used.

No sampling equipment recorded for this dataset

Site Characteristics

The spatial extent of the dataset site coverage, and descriptions of the spatial extent and context for the data collection

  • Site Description

    Vermont hardwood forests