Phenology Survey
Record seasonal life cycle events and timing.
Overview
Phenology surveys track the timing of seasonal biological events - when plants flower, when birds migrate, when insects emerge. This data is crucial for understanding climate change impacts.
When to Use Phenology
- Flowering and fruiting timing
- Leaf emergence and senescence
- Bird migration patterns
- Insect emergence
- Breeding activity
- Long-term climate monitoring
Applications
- Climate change research
- Agricultural timing
- Conservation planning
- Ecosystem services assessment
Setting Up Phenology Surveys
Basic Configuration
| Field | Required | Description |
|---|---|---|
| Site Name | Yes | Location identifier |
| Target Species | Yes | Species being monitored |
| Individual Tag | Recommended | Unique ID for repeat observations |
| Location | Yes | GPS coordinates |
Individual Tagging
For repeat observations:
- Assign unique ID to individual
- Mark physically if appropriate
- Record GPS waypoint
- Note identifying features
- Take reference photo
Data Collection
Phenophase Categories
FieldEco supports 33 phenophase categories spanning angiosperms, conifers, ferns, and mosses, based on USA National Phenology Network standards:
Leaves (5):
- Breaking leaf buds
- Unfolded leaves
- Full-size leaves
- Colored leaves
- Falling leaves
Flowers (5):
- Flower buds
- Open flowers
- Full bloom
- End of bloom
- Pollen release
Fruits (3):
- Unripe fruits
- Ripe fruits
- Recent fruit/seed drop
Conifers (4):
- Breaking needle buds
- Young needles
- Pollen cones
- Seed cones
Ferns — Vegetative (4):
- Crozier (tightly coiled fiddlehead)
- Unfolding frond
- Expanded frond
- Senescent frond
Ferns — Reproductive (4):
- Sori developing
- Sori mature
- Spore release
- Post-dispersal
Mosses — Vegetative (2):
- New growth
- Mature cushion
Mosses — Reproductive (6):
- Seta emerging
- Seta elongated
- Capsule developing
- Capsule mature
- Spore release
- Post-dispersal
Recording Phenophase Status
For each phenophase observed, record presence as Yes or No, optionally with an intensity scale below.
Intensity Scales
Quantify the magnitude of phenophases using percentage-based scales:
Flower/Fruit Intensity:
- Less than 5%
- 5-24%
- 25-49%
- 50-74%
- 75-94%
- 95% or more
Canopy Fullness:
- 0% (no leaves)
- 1-24%
- 25-49%
- 50-74%
- 75-94%
- 95-100%
Session-Based Monitoring
FieldEco’s phenology surveys are designed for long-term, repeated observations of the same individuals.
Creating a Monitoring Site
- Set up a phenology survey location
- Mark the site as permanent for long-term monitoring
- Record GPS coordinates of site center
- Take site photos for relocation
- Add tagged individuals
Individual Tagging System
Each monitored individual gets a unique tag:
| Field | Purpose |
|---|---|
| Tag ID | Unique identifier (e.g., QUEALB-001) |
| Species | Scientific name |
| GPS | Individual’s precise location |
| Reference Photo | Visual ID for relocation |
| Notes | Distinguishing features, landmarks |
Session Workflow
Each monitoring visit is recorded as a session:
- Open Site: Navigate to your phenology site
- Start Session: Record date, time, observer
- Visit Individuals: Go to each tagged plant/animal
- Record Phenophases: Document current status
- Add Photos: Visual documentation of phenophases
- Complete Session: Save all data
Viewing Historical Data
For each individual, you can:
- View all previous sessions
- Compare phenophase status over time
- See photo timeline
- Track intensity changes
- Export session history
Session Comparison
Compare phenology across:
- Time: Same individual across visits
- Years: Same date range, different years
- Individuals: Same species, same session
- Sites: Different locations, same period
Repeat Observations
For best results:
- Visit same individuals regularly (weekly ideal)
- Maintain consistent timing (morning preferred)
- Use same observers when possible
- Record any disturbance or damage
- Note phenological anomalies
Best Practices
Individual Selection
- Choose healthy, accessible individuals
- Mark clearly but non-destructively
- Select representative specimens
- Document initial condition
Observation Consistency
- Observe same parts of plant
- Use consistent definitions
- Time observations similarly
- Note any changes in protocol
Data Quality
- Train observers thoroughly
- Use photo documentation
- Record weather conditions
- Note any phenological anomalies
Analysis Integration
Phenology data supports:
- Timing analysis - First/peak/last dates
- Duration metrics - Length of phenophases
- Synchrony analysis - Population-level patterns
- Climate correlation - Temperature/date relationships
Related Documentation
- Checklist Survey - General observation
- Photo Documentation - Visual records
- Weather Tool - Climate data