Suitability of lichens to monitor climate change

Abstract

The lichens are one of the most sensitive organism in nature among the different elements of
biodiversity and can be affected more due to climate change. Lichens fulfil their water need from
rain, fog and dew present in the atmosphere. The change in atmospheric temperature influence,
to a greater extent, the thallus temperature and physiology of lichens which leads to emergence of
new ecotype and finally the shift in a species. The impact of climatic factors on lichens
ecophysiology, is different from higher plantsis due to the poikilohydric nature. The lichen
bioindicator communities have been shown to exhibit correlation with climatic factors of an area.
The changes in lichen biomass, frequency, diversity and indicatorcommunity indices, indicate
changes in environmental gradients (temperature, humidity and UV radiation). A number of
techniques regarding study the environmental and climatic change are available. However, the
present correspondence hypothesized about some easy and low cost techniques to monitor
climate change utilizing lichens. The overview will also leads to assess patterns of lichens responses
with species representation and towards its understanding the current and future changes in
climate of an area.