Arctic Council Working Group Prey for vertebrates
- Ecosystem: Terrestrial
- Species group: Invertebrates
- Publications: Arctic Terrestrial Biodiversity Monitoring Plan
Arctic wolf spider and crane fly
Jose Ortega
Jose Ortega
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| FECs Group | Parameter | Attributes | Priority | Extreme Events | Scale | Complexity | Recurrance | Method | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Prey for vertebrates | Diversity | Species richness (estimates) | Recommended | Local | Basic | Annually first; 3-5 years afterwards | Standard grids of pan and/or pitfall traps | Some taxonomy required. Spiders as top predators and as easily sampled taxa should be a priority | |
| Prey for vertebrates | Abundance and productivity | Relative number per trap | Essential | Local |
| Annually if possible where bird studies are conducted; 3-5 years as minimum | Standard grids of pan and/or pitfall traps. Can conduct standardized area sampling to achieve density estimates also (labour intensive) | Possible if standard protocols can be used. This is a key driver for insectivorous birds. | |
| Prey for vertebrates | Spatial structure | Species presence/absence | Recommended |
|
| Annually first; 3-5 years afterwards | Standard grids of pan and/or pitfall traps. Include consultation with experts, historical collections | Possible if standard protocols can be used. This is a key driver for insectivorous birds. | |
| Prey for vertebrates | Phenology | Seasonal activity patterns | Essential | Local | Basic | Annually if possible where bird studies are conducted; 3-5 years as minimum | Same passive sampling approach but done over entire active season, from snowmelt until snow arrival; possible community / local knowledge? ) | Some taxonomy required. | |
| Prey for vertebrates | Health and productivity (spiders only) | Body condition index, body size index, clutch size (wolf spiders) | Recommended | Local |
| Annually first; 3-5 years afterwards | Wolf spiders only: body size index; clutch size of females, parasitism rates | Simple to conduct for some taxa, e.g., wolf spiders |