What do you think about variations or responses of diffrent plant forms( such as annuals, chryptophytes, phanerophytes, herbaceous, shrubs) at future climate changes? Which of them are more vulnerable?
Ecosystems are distributed according to their tolerance to thermal and pluriometric extremes. If these extremes change, the distribution of ecosystems will change. So it would be logical to expect a decrease in total biomass in those places where warming leads to an increase in temperature and a decrease in rainfall, and an increase in total biomass in places where warming implies a increase in precipitation. I believe that the question is not so much which plants or associations are more threatened, but how their distribution areas will move and whether the total biomass will increase or decrease.
It depends on the type of species and the resilience of ecosystems to bear the climate change impacts. However, there are indications that annual herbs are more likely to invade native species ecosystems in a climate change scenario because of their greater reproductive potential and nutrient use efficiency. Please refer the link " Article Assessing distributions of two invasive species of contrasti...
In fact one cannot generalize that one or another particular form of plants such as annual, biennial, perennial will be more vulnerable to climate change. Survival in a climate change scenario depends on specific adaptations of individual species as well as that of the communities. Whenever a major change occurs in a community, even the climate resilient species may be affected. For example, even when a species is individually resilient, if its pollinator or its microbial associate in the soil is sensitive to the change, naturally the climate resilient species also may disappear. That is why we should consider climate change as a catastrophic event the impact of which would be quite unpredictable!
but generally diffrent plant forms have diffrent capacity to challenge adverse situations and if assumed some parameters constant , we can predict diffrent plant response to climate change, as we do in SDM models.
All agricultural production will be negatively affected by climatic changes. So, evaluating productivity of plants at different regions is required after every period of time to choose best of them.
Maybe it is not easy to find generalizable patterns. In mountains of the Italian Alps and Apennines, researchers found an expansion of thermophilic species which resulted to be mainly hemicryptophytes and suffruticose chamaephytes.