Figure 1 describes the photosynthetic light response between Beech and Oak plantations grown in patch harvest and shelterwood habitats, more clearly the comparison of photosynthetic rates v.s. light intensity response. As shown, Oak in patch harvest and Beech in shelterwood are having more photosynthetic efficiency in contrast to the remaining two, Beech in patch harvest, and Oak in shelterwood, having low effiency. Further proven by the slopes of the curves, the slope is greater in Oak in patch harvest and Beech in shelterwood. Additionally, as light intensity increases, the photosynthetic rates begin to level off.
2) Based on beech and oak responses in Figure 1, would you classify this beech as shade or light tolerant? What about the oak species? Why? (10 points) …show more content…
Oak on the other hand is light tolerant, with the rate of photosynthesis greater in patch harvest habitat. Whereas, when Beech is under patch harvest habit, and Oak is under shelterwood habitat, produces a low to no effect in the photosynthetic rate of either species.
3) Why would photosynthetic rates of beech grown under shelterwood be higher than those of oak grown under patch harvest? (Read the background information carefully to answer this!) 10 points.
The use of a shelterwood system is favorable, as it has the added benefits to reduce understory competition on newly established regeneration, minimize the risk of frost damage to young seedlings, and provide for nutrient retention in a given site, creating a higher survival capability, hence a higher photosynthetic rate. In comparison to Oak grown in patch harvest, if under direct frost, it would be unsuitable, as it is lacking these benefits, making its survival capability much lower in comparison to Beech grown under