Can
genetic engineering be used to preserve ecosystems?
I don't think eradicating an intrusive species from an area with a
gene drive is significantly ethically different from doing so with
traps. For safety, there must be multiple levels of safety systems to
prevent the gene drive from spreading off the target area.
However, I think any scheme that involves modifying large numbers of
species will not be feasible for a long time. For instance, the idea
of genetically modifying coral to cope with heat and acidity is far
fetched, because preserving the ecosystem would require modifying
all the coral species and varieties there. How many coral
species are found in any given reef? Can we be sure we have
identified them all? It doesn't seem feasible.