It's really the primary problem of climate change.
Let me repeat myself: it is not obvious to me that this is such a huge problem.
There is little need for metaphors here, the situation is easy to visualize directly. Some ecosystems will adjust, some will not and will be replaced by other ecosystems. Unless you are very attached to the particulars of the status quo why is this horrible?
Some forest will be replaced by grasslands, some grasslands will be replaced by forests. In some places the rainforest or the taiga will shrink and in others it will expand. The areals of plants and animals will shift. What's the big deal?
If you are concerned about farming, the same reasoning applies. Some farms will get better harvests, some -- worse. Some farms might have to switch crops. Some might go out of business as land becomes not arable, but others will spring up on newly arable land.
There is little need for metaphors here, the situation is easy to visualize directly. Some ecosystems will adjust, some will not and will be replaced by other ecosystems. Unless you are very attached to the particulars of the status quo why is this horrible?
Some ecosystems will be replaced by other ecosystems, but total biological and ecosystem diversity is likely not to rebound for millions of years (judging by comparable past climactic changes and mass extinction events.)
Some ecosystems are liable to collapse and be replaced by dramatically impoveris...
Note: Please see this post of mine for more on the project, my sources, and potential sources for bias.
I have written a couple of blog posts on my understanding of climate forecasting, climate change, and the Anthropogenic Global Warming (AGW) hypothesis (here and here). I also laid down the sources I was using to inform myself here.
I think one question that a number of readers may have had is: given my lack of knowledge (and unwillingness to undertake extensive study) of the subject, why am I investigating it at all, rather than relying on the expert consensus, as documented by the IPCC that, even if we're not sure is correct, is still the best bet humanity has for getting things right? I intend to elaborate on the reasons for taking a closer look at the matter, while still refraining from making the study of atmospheric science a full-time goal, in a future post.
Right now, I'm curious to hear how you formed your views on climate change. In particular, I'm interested in answers to questions such as these (not necessarily answers to all of them, or even to only these questions).