If these lasers are used to prevent these species from damaging the ecosystems, then OK. But AFAIK, it was never the intention to discriminate between invasive and non invasive species.
Humans are part of nature and therefore anything we do is natural, I wish people would stop trying to create this dichotomy between humanity and the rest of nature.
I was reading the Wikipedia article about "The road to hell is paved with good intentions", which I found after translating the idiom from my native language. I wanted to make sure you'd understand the quote but guess what?
Here's the first sentence of the first section (Meaning):
>A common interpretation of the saying is that wrongdoings or evil actions are often masked by good intentions; or even that good intentions, when acted upon, may have unintended consequences. A simple example is the introduction of an invasive species, like the Asian carp, which has become a nuisance due to unexpected proliferation and behaviour.
Why do you think we are the only species that feel the need to save others? Have we ever tried to save one that wasn't threatened by the consequences of humans' wrongdoings?
We act like we don't know what we're doing. Perhaps we should calm down and observe before destroying our fragile environment and rush to save it (often destroying it further in the process). Just. Calm. Down.
Yes, we do try to save species we know are threatened by human activities and because we have wiped out many animal species in the past.
Also, as with other kinds of problem-solving, our efforts are indeed going to include missteps and side-effects, despite efforts to minimize these.
However my sense is that many of us are consumed by guilt (existential as well as environmental) and this isn't going to help us to think clearly about environmental matters. Perspective is needed!
For instance, it's worth noting that (1) 99% of all the species that have ever existed were wiped out by purely natural causes, (2) only humans can possibly hope to avert the next major asteroid impact, the next supervolcano eruption, and so on.
