Barbour 2007
Cernusak et al. 2003
Sternburg et al. 1989
Implications
General Knowledge
100
The number of stable oxygen isotopes? Name them
What is 3? (18O, 17O, 16O) We know... this software can't handle superscript :(
100
The specific location of the samples collected.
What is southwestern Australia?
100
The location where samples were collected.
What is irrigated and control plots at Barro Colorado Island, Panama?
100
The proper way of writing and saying oxygen isotope values.
What is δ 18 O (delta O 18)? We know ... sorry, the software can't handle superscript
200
Name two of the studies mentioned in the Barbour 2007 interested in oxygen isotope ratios.
What is • Ecophysiological studies of regulation of plant water loss • Breeding for improved water use efficiency and yield in crop sciences • Paleoclimatic reconstruction from tree rings • Identification of the origin of plant tissue
200
Name the one thing that unite almost all parasitic angiosperms and what is its purpose?
What is the presence of haustorium, an organ “that allow the parasite to attach to the host and extracting water and solutes from the host’s vascular system”?​
200
Which oxygen isotope values were significantly lower than the corresponding species? (a) Leaf cellulose at 1 meters (b) Leaf cellulose between 9 and 25 meters
What is (a) leaf cellulose at 1m were significantly lower than the corresponding species at 9m or above for both species in irrigated plots?
200
The country Frida is from.
What is Sweden?
300
What authors did Barbour refer to having a better model of “non-steady state enrichment of water at the sites of evaporation”?
What is Farquhar and Cernusak 2005?
300
The two main classifications of parasitic plants. (Also explain the difference)
What is hemiparasitic and holoparasitic? --- Holoparasite – a plant that is completely parasitic on other plants and has virtually no chlorophyll. --- Hemiparasite – a plant that is parasitic under natural conditions and is also photosynthetic to some degree.
300
Environmental factors that would affect the oxygen isotope values of cellulose.
What is (1) variation in light intensity, (2) humidity?
300
Name an implication of the concurrent analysis of carbon and oxygen isotope ratios of leaf material discussed in Sternberg et al. 1989?
The article suggests... The concurrent analysis can potentially be useful for long term estimation of assimilation and evapotranspiration regimes of plants.
300
What is the name of the standard used for comparing oxygen isotopes? Full name
What is VSMOW (Vienne-Standard Mean Oceanic Water)?
400
Under Point of origin and forensic applications, oxygen isotope rations of local water carry a strong geographic signature due to? (4 possibilities)
What is rain droplet formation, continentality, storm-track trajectories and locality of cloud condensation?
400
Lower oxygen isotope ratios in mistletoe leaf dry matter compared to their host depend on?
What is higher observed transpirations rates?
400
Oxygen isotope ratios of leaf water is the same as that of ground water. True or False?
What is False? There are fractionations associated with evapotranspiration of leaf water. Thus, there will be an accumulation of δ18O in the leaf water compared with that of ground water, depending on the mixture of leaf water undergoing evapotranspiration.
400
Name an implication of the oxygen and carbon isotope composition of parasitic plants discussed in Cernusak 2003?
What is the results provide a context for the formulation of specific hypotheses aimed at elucidating mechanisms underlying isotopic variations among plants.
400
The two effects that will impact oxygen isotope ratios on a wider geological scale
What are rain-out effect and amount effect?
500
The description of the Peclet effect
What is the convection of unenriched water to the evaporating sites opposed by backward diffusion of H2*18 O, and predicts an increasing discrepancy between enrichment predicted by Eqn 2 and that measured in lamina tissue with increasing transpiration rate ?
500
An explanation for why mistletoe and root hemiparasites were more depleted in 18*O compared to their hosts.
What is the differences were interpreted as resulting from higher stomatal conductance in the parasitic plants?
500
For irrigated plots there was a highly significant correlation between oxygen isotope values and carbon isotope values, which was not observed in control. Why?
What is the relationship can be explained by humidity controlling stomatal conductance. Low humidity decreases stomatal conductance, which affects discrimination against carbon-13 by photosynthetic reactions, thus affecting the carbon isotope values of photosynthates.
500
How can oxygen isotopes be used in the food industry?
What is food authenticity in fruit juice by combining sugars, citric acids and water to see if freshly squeezed or reconstructed?
500
The main difference in plant tissue from higher latitudes compared to a plant from the tropics?
What is higher latitude and elevations plant tissue will have more depleted in oxygen-18 values?
M
e
n
u