Heaton
What type of plants are most dominant and in many areas are the only form of vegetation.
What is usually considered to be the key limiting facto for growth of desert plants?
Water
For this experiment was it more beneficial to collect mature canopy leaves from the exposed parts of the trees or the younger fresher leaves close to the trunk and why?
Mature canopy leaves, they were properly exposed to the conditions being tested.
CAM
If environmental factors cause the plant to increase its stomatal conductance and/or decrease its carboxylation rate, then the resulting increase in pi will produce a _____ 13C.
Lower
As per general observation, primary productivity and rainfall are ____ correlated.
Positively
Land use, specifically ___, is a lead contributor in "edge effects" in tropical forests caused by human activities.
The plant material used for analysis was endemic to___.
Madagascar
If its is otherwise limiting, an increase in light will tend to _____ carboxylation and ___ 13Cp.
Increase
There is a tendency for trees to have __ Ci values than shrubs?
Lower
The authors analysed the 13C data using the ___ (ANOVA) arcsin square root transformed data.
Analysis of Variance
Why can we see that the 13C values in the samples driving from the different environments but practically the same climate show a considerable diversity?
Plants close their what in response to decreased water availability?
Stomata.
In the results of the study there was an overall __ in intercellular carbon dioxide levels (Ci) as soil moisture become less available.
decrease
That likely was responsible for the pattern that was observed in the results.
The complex environmental variability caused by the increase in frequency gaps near the forest edge.
13C values more negative than -22%o, indicating substantial CO2 fixation by the C3 pathway, are observed mainly in species from the humid regions where long-lasting drought is rare, what does this ultimately cause?
The stomata can be kept open largely during the day.
Overall lower 13C values for forest plants, and the vertical gradients in forest trees, are ascribed to what effect?
Canopy effect
A positive correlation between plant longevity and its water-use efficiency suggests a physiological mechanism that may provide insight into what about plants?
Competitive interactions, community dynamics and plant establishment.
What were the 5 microenvrioments leaves were collected from during this research?
Understorey, Gap, Gap Edge, Old Gap, and Secondary Vegetation.
K. porphurocalyx was found to have the lowest 13C of -__%.
30.06