Transcript
towards a functional taxonomy of the niche and facilitation
@cjlortie
main concepts defined and challenges
Sotomayor and Filazzola
niche range
extentexpansionfacilitation
fundamental
realized
Sotomayor et al 2017
Korner 1995
alpine ecosystems unique
high-altitude
> natural tree line
described by incredible variation
zonation
global scale
~10,000 plant species @1/3-1/4 all species represented
global extent of species
extent within a mountain region
the alpine niche changing rapidly
climate envelopes of alpine species
positive interactions
look up,not down
for treasure
niche theoryvalidation
andapplication
niche range
extentexpansionfacilitation
fundamental
realized
foundation species shortcut
synthesis of primary data on facilitation
limited to no reciprocity tested (bidirectionality unexamined)
rgbif & dismo
scrape %>% Maxent test
3 foundation species and 174 subordinate plant species
Niche area is the predicted area of occurrence for the plant species over the specified region.
AUC is the area under the curve is an estimate of model fit based on specificity vs sensitivity.
inferred reciprocity from positiveinteractions can have negative
implications for niche
species specificity critical
predicted occurrences are important
for bidirectionality
top related