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SP012 – Simplified metadata
Dataset
- Database Code
- SP012
- Title
- The relationship between early succession rates and soil properties in the Andrews Experimental Forest, 1999-2000
- Abstract
- This study represents only one portion of a much larger study involving a wide range of disciplines and several H.J. Andrews Forest researchers. This dataset represents all the soils data collected up through the summer of 1999. In addition, Steve Acker conducted surveys of vegetation and measuring tree growth using cores. Mark Harmon has conducted a survey of coarse woody debris. Future studies could include hydrology and species diversity. When we compared the soil characteristics between slow and expected recovery sites, the only variables showing significant differences were soil moisture, litter depth and substrate induced respiration (SIR) rates at low glucose concentrations. The litter depth was slightly less, soil moisture lower, and SIR rates higher in the slow sites. When we compared soils in adjacent uncut forests, we found that field respiration rates were lower in forests adjacent to slow recovery sites than to normal sites suggesting that these sites may have inherently lower productivities. We concluded that slow recovery after clear-cutting is most likely related to physical site characteristics; i.e. steepness of slope and aspect. There did not appear to be any difference in soil depth.
- Keywords
- succession; primary production; recovery; inorganic nutrients; soil; forests; Long-Term Ecological Research (LTER); primary production; inorganic nutrients
- Date begin
- 1999-06-06
- Date end
- 2000-07-07
- Principal Investigator
- Robert P. Griffiths
Entities
- SP01201
1. SP01201 - Attribute list
| Attribute | Type | Domain | Minimum | Maximum | Unit |
|---|---|---|---|---|---|
| DBCODE | varchar | enum | |||
| ENTITY | numeric(1.000000) | range | 1.0000 | 1.0000 | number |
| SITE | numeric(1.000000) | range | 207.0000 | 739.0000 | number |
| TREATSET | numeric(1.000000) | range | 1.0000 | 6.0000 | number |
| TREATMENT | varchar | enum | |||
| CCRATE | varchar | enum | |||
| ELEVATION | varchar | enum | |||
| HYSTER | numeric(1.000000) | range | 0.0000 | 100.0000 | percent |
| GAUT | numeric(1.000000) | range | 0.0000 | 100.0000 | percent |
| DEPTH | numeric(0.100000) | range | 25.0000 | 70.0000 | centimeters |
| COEFVAR | numeric(0.100000) | range | 30.0000 | 70.0000 | percent |
| LITTER | numeric(1.000000) | range | 0.0000 | 10.0000 | centimeters |
| BULKDENS | numeric(0.001000) | range | 0.1260 | 1.1360 | grams per cubic centimeter |
| MOIST | numeric(0.100000) | range | 0.0000 | 110.0000 | percent |
| SOILTEMP | numeric(0.100000) | range | 9.0000 | 20.0000 | degrees Celsius |
| LIGHT | numeric(0.100000) | range | 0.0000 | 500.0000 | micromoles per square meter per second |
| SOM | numeric(0.010000) | range | 10.0000 | 40.0000 | percent |
| PH | numeric(0.010000) | range | 4.0000 | 6.0000 | pH units |
| EXAMM | numeric(0.010000) | range | 0.0000 | 1.0000 | micromoles per gram per day |
| MINN | numeric(0.010000) | range | 0.0000 | 10.0000 | micromoles per gram per day |
| DENIT | numeric(0.100000) | range | 0.0000 | 10.0000 | nanograms per gram per hour |
| B_GLUC | numeric(0.001000) | range | 0.0000 | 1.0000 | micromoles per gram per hour |
| LTR | numeric(0.100000) | range | 0.0000 | 40.0000 | micrograms per gram per week |
| LABRESP | numeric(0.010000) | range | 0.0000 | 5.0000 | micrograms per gram per hour |
| FLDRESP | numeric(0.010000) | range | 0.0000 | 30.0000 | grams per square meter per day |
| SIR_1NM | numeric(0.001000) | range | 0.0000 | 1.0000 | micrograms per gram per hour |
| SIR_1M | numeric(0.001000) | range | 0.0000 | 2.0000 | micrograms per gram per hour |
Attribute definitions
- BULKDENS
- Bulkdensity
- B_GLUC
- Beta-glucosidase activity
- CCRATE
- Rate of recovery (canopy closure)
- COEFVAR
- Coefficient of variability for soil depth measurements
- DBCODE
- Database code
- DENIT
- Denitrification potential (as N)
- DEPTH
- Soil depth
- ELEVATION
- High and low elevation sites (explicit)
- ENTITY
- Entity number
- EXAMM
- Extractable ammonium
- FLDRESP
- Field respiration rates
- GAUT
- Percentage of core containing mycorrhizal mats like those of the genus Gautieria
- HYSTER
- Percentage of core containing mycorrhizal mats like those of the genus Hysterangium
- LABRESP
- Laboratory respiration rates; two h (as C)
- LIGHT
- Amount of light measured with LiCor
- LITTER
- Litter depth
- LTR
- Long-term laboratory respiration; one week (as C)
- MINN
- Mineralizable nitrogen
- MOIST
- Percent moisture
- PH
- pH
- SIR_1M
- Substrate-induced respiration with 1 M glucose added (as C)
- SIR_1NM
- Substrate-induced respiration with 1 nM glucose added (as C)
- SITE
- Site designator used for all segments of this study
- SOILTEMP
- Soil temperature measured with LiCor
- SOM
- Soil organic matter
- TREATMENT
- Treatments: controls were adjacent oldgrowth controls; exper were the experimental plots
- TREATSET
- Treatment set pairing expected sites with slow sites
Enumerated domains
Enumerated domain for attribute: DBCODE
| Code | Description |
|---|---|
| SP012 | FSDB dataset code SP012 |
Enumerated domain for attribute: TREATMENT
| Code | Description |
|---|---|
| control | Control treatment in adjacent old-growth forest |
| exper | Experimental plot treatment |
Enumerated domain for attribute: CCRATE
| Code | Description |
|---|---|
| slow | slow canopy closure 40 years post-harvest |
| expected | normal or expected rates of canopy closure |
Enumerated domain for attribute: ELEVATION
| Code | Description |
|---|---|
| low | low elevation site |
| high | high elevation site |