Traits | Categories | Expected Mechanisms |
---|---|---|
Maximal size (cm) | 0.25-0.5 | Disturbance due to frequent discharge fluctuation and siltation will favor small size invertebrates having a higher resilience capacity |
 | 0.5-1 |  |
 | 1-2 |  |
 | 2-4 |  |
 | 4-8 |  |
Dispersal | Aquatic passive | Passive dispersal is expected to be more common when stream physical connectivity is high |
 | Aquatic active |  |
 | Aerial passive |  |
 | Aerial active |  |
Lifecycle duration | ≤ 1 year | Taxa having a short development cycle have a higher resilience capacity and therefore are more able to maintain populations in frequently disturbed environments |
 | > 1 year |  |
Potential number of life cycles per year | < 1 | Populations having more than one cycle per year have a higher resilience capacity adapted to frequently disturbed environments |
 | 1 |  |
 | > 1 |  |
Current velocity (cm.s-1) | Null | An increase in water discharge will favor organisms preferring medium to fast current velocities |
 | Slow (<25) |  |
 | Medium (25-50) |  |
 | Fast (>50) |  |
Trophic status | Oligotrophic | An increase of nutrient release by permafrost thaw will favor mesotrophic and eutrophic taxa |
 | Mesotrophic |  |
 | Eutrophic |  |
Temperature preferendum | Cold (< 15°C) | Climate change will negatively affect the cold stenothermic taxa |
 | Warm (> 15°C) |  |
 | Eurythermic |  |
Saprobity | Xenosaprobic | In a eutrophic ecosystem, meso- and polysaprobic taxa are more likely to occur |
 | Oligosaprobic |  |
 | α-mesosaprobic |  |
 | β-mesosaprobic |  |
 | Polysaprobic |  |
Substrate preferendum | Cobble | An increase of suspended particles and substrate siltation will increase the percentage of taxa adapted to fine-grain substrates |
 | Gravel |  |
 | Sand |  |
 | Silt |  |
 | Macrophytes |  |
 | Microphytes |  |
 | Roots |  |
 | Detritus |  |
 | Mud |  |
Feeding habits | Deposit-feeder | Eutrophication of the stream system will increase the percentage of deposit-feeder and filter-feeder taxa |
 | Shredder |  |
 | Scraper |  |
 | Filter-feeder |  |
 | Predator |  |