WorksheetsPaper 8
Total questions: 9
Worksheet time: 5mins
Aquatic graminoid plants have ______ rates of CH4 flux compared to drier plant communities
Higher
Similar
Lower
We are still trying to find this out
T/F: Stepwise regressions were created to relate variables to biomass. Plant height for C. aquatilis and Sum of leaf length for A. fulva best explained this
True
False
CH4 flux for A. fulva was best strongly associated and best explained by _____
thaw depth+water depth
soil temperature
biomass
nothing, science is hard
The summed fluxes of CH4 for both aquatic graminoids has _____ in the past 40 years
not changed
increased slightly
tripled
doubled
Both plant species have a combined land surface of less than __% but are responsible for 2/3 of total CH4 flux in the region
67%
5%
3%
10%
Correlations and Regressions are synonymous and can both be used to predict future trends
true
false
Did both species show similar rates of CH4 flux?
yes, no differences between the two
no, A. fulva flux was higher
I miss the lemmings, plant interactions are hard
no, C. aquatilis was higher
Temperature had no direct effect on aquatic plant biomass change, so the 2 main attributing factors in last 40 years were
longer growing season+ increased nutrients
temperature + hotter days
water depth + thaw depth
other plants + solid permafrost
You don't need to worry about any assumptions in regression analysis like normality, residuals or linearity
true
false
:)
