3. Palynology?
The science concerning the study of pollen and spores is
called ‘Palynology”
Aeropalynology?
When these pollen and spores present in the
atmosphere, constitute Aeropalynology.
Meteorology?
Meteorology is the scientific study of the atmosphere
that focuses on weather processes and forecasting.
4. The air contains an enormous number of particles of
various origins, shapes and sizes found in suspension,
constituting atmosphere aerosol.
The atmosphere concentration of different pollen
types varies enormously from one country to another,
in regions of the same country and even in cities.
Because pollen emissions depend on vegetation and
environmental conditions.
Link b/w Palynology & Meteorology
5. Generally, meteorological factors have an important
influence on this airborne concentration.
According to scientists, small pollen particles can hold
condensation for cloud formation.
“It’s possible that when trees emit pollen, that makes
clouds, which in turn makes rain and that feeds back
into the trees and can influence the whole growth
cycle of the plant,”.
7. Scientists studied about pollen concentration
correlated positively with air pressure,
temperature, wind direction, wind speed, sunshine
hours and negatively correlated with, rainfall,
precipitation, sea level pressure and relative
humidity.
According to another study, weather variables
(wind, humidity, temperature, etc.) are strongly
influenced on pollen and spore behavior and
dispersion in the atmosphere
8. Temperature affects the hygroscopic movement and
water rupture of pollen grains that help to liberate
pollen easily to the atmosphere.
Carbon dioxide is also positively affected on pollen
dispersion, as increasing the rate of photosynthesis.
Pollen grains can scattered light rays with different
angles.
9. Every year around springtime, pollen spores come
out and cause itchy watery eyes, runny noses, and
uncontrollable sneezing.
Pollen has a very important role to trigger allergic
respiratory diseases. Human health is directly
affected due to the presence of their high
concentration in the atmosphere.
A Modern Trend in Palynology
Regarding Meteorology; Pollen Allergy
10. In Pakistan, Islamabad and Lahore have the largest
pollen release plants.
According to a research study, in Islamabad, there is
an excess of vegetation, and a lot of wild plants
which produce their pollens, at different times of the
year, usually from early spring till late autumn. But
there is a peak of pollen allergies in spring season.
The plants which cause allergy are Paper mulberry,
Acacia, Eucalyptus, Pine, Grasses, Cannabis,
Dandelion and Alternaria.
Pollen Allergy in Pakistan
11. The Paper Mulberry tree has been the focus of
attention ever since pollen allergy was first
recognized as a threat to human health in
Islamabad.
From these Pollens estimated 97 percent come
from Paper mulberry. The pollen count in
Islamabad was at its highest peak in previous nine
years.
12. When pollen grains are washed or blown into bodies
of water, their tough outer walls allow them to be
preserved in sediment layers in the bottoms of
ponds, lakes, or oceans.
Because of their unique shapes, scientists can then
take a core sample of the sediment layers and
determine what kinds of plants were growing at the
time the sediment was deposited.
Palynology tells about Past climate
13. Furthermore, it is also possible to illustrate past
plant diversity, stability and dynamics of
ecosystems.
Due to the strong relationship between vegetation
and climate (temperature, precipitation), the
identification of past vegetational changes allow to
reconstruct climate variability in the past.
Thus pollen grains can also be indicators for
climate changes.
