8/8/2019 5.2 Databased Questions WORD
1/2
Data Based Questions
Nutrient Cycles - page 185
1. Above ground would include plants that absorb the nutrients
from the soil and roots
below ground and are available above ground for consumers to
eat.
2. The biome with the largest above ground compartment is the
equatorial forest.
3. It is hard to grow crops in an area where equatorial forest
has been cleared of its
vegetation because its nutrients are stored mainly above ground
and therefore there would
be a shortage of nutrients for the organisms in the ecosystem to
survive off of.
4. Decomposers and detritus feeders eat dead matter and change
the nutrients back to
their inorganic form and releases the back into the atmosphere
through respiration and
excretion.
5. Most of the nitrogen in a tundra is in the soil because it is
an area with very rich soil with
little vegetation so all nitrogen is stored in the soil.
6. Warming due to climate change might cause a release of CO2
because it warms the soil
and allows the CO2 to move more easily through the soil and be
released into the
atmosphere.
Release of Carbon from Tundra Soils - page 186
1. A) When the soils was kept moist there was more carbon
released from the soil
especially when it was at 15 degrees which was 15% higher than
the 7 degree moist soil.
The soil saturated with water released almost the same amount of
carbon at both
temperatures
B) The heat allows for the carbon to be evaporated easier , the
higher the heat is the
quicker the carbon evaporates allowing more to be released in
the same amount of time.
2. A) There is more carbon released when the soil is kept moist.
When the soil is too wet
there is a significant amount less carbon released
B) This is because carbon is absorbed by the water and if there
is too much it cannot be
released however if the soil is only moist the carbon is still
able to be released back into
the atmosphere
3. The fertilizer generally allows more carbon to be released
than the soil without fertilizer,
especially in the moist soil as those with fertilizer in moist
soil have the most carbon
released.
4. The moistness of the water impacts the release of carbon the
greatest, the soil that is
moist releases the most carbon and the release just raises with
the addition of fertilizer
and temperature. However the most significant difference is
between the water saturated
soil and the moist soil where the moist soil releases much
more.
Phenology - page 188
1. A) The leaves opened the earliest in 1999
B) The mean temperature was at its lowest in 1994
2. A) When the temperature is warmer the leaves open earlier,
when the temperature is
around 0 the leaves open at the mean and when the temperature is
colder the leaves open
later.
B) The graph shows the increase in heat at the same time of
year. In 1970 the temperature
was low at -2 in March and April but it gradually increased to
+2 in 1980 and then got even
