|
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
| |
