Kari Norman
karinorman.bsky.social
Kari Norman
@karinorman.bsky.social
Ecologist at Rocky Mountain Research Station. Thinking about measuring biodiversity change, monitoring, and tools for making those things easier.
Shameless plug for my recent paper looking at this via functional traits - we found interesting local changes in functional structure but no general trends! onlinelibrary.wiley.com/doi/10.1111/...
No General Trend in Functional Diversity in Bird and Mammal Communities Despite Compositional Change
Aim Despite unprecedented environmental change due to anthropogenic pressure, recent work has found increasing dissimilarity due to turnover but no overall trend in species diversity through time at...
onlinelibrary.wiley.com
February 25, 2025 at 4:46 PM
I'd love to be added!
January 15, 2025 at 4:23 PM
tl;dr: big changes can happen in the functional space even when species-based metrics look otherwise stable through time, and on the flip side, losses/gains of species or changes in species identity can have little to no impact on the functional space

Please dm me for a pdf if you're paywalled!
January 7, 2025 at 10:47 PM
We also found that individual studies fell into four general groups: no change in species or functional metrics, functional diversity change independent of species change, loss of functional redundancy, and increasing species richness.
January 7, 2025 at 10:47 PM
We found no trend across communities in functional richness, evenness, or divergence - in line with other species-based work. This also held true for almost all models of the means of individual trait axes.
January 7, 2025 at 10:47 PM