if humans are animals, why is it a bad thing that we carry “invasive” species to different places? and why are they considered to be invasive things we need to get rid of?


NOTE: i am in no way saying carrying invasive species around isn’t bad/harmful! it very much is a big issue. i am just a bit lost on how humans (being animals) are doing “incorrect” unnatural things since we are natural(compared to other living things who don’t necessarily harm their environment)

okay, so i don’t really understand the whole invasive species thing. when humans carry plants/animals to different regions and they start rapidly growing there, why do we need to get rid of them? humans are animals as well (great apes), and a way that seeds/eggs spread is by grabbing onto other animals as they travel. so why is it different when people do it? i’m just confused

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An invasive species is typically something that is not native to an area. It can grow and take over local foliage, which in turn depletes the food for local animals.

We don’t naturally carry them the way seeds spread on plant fur. We straight up yoink them!

Its also bad because it upsets the local environment, can potentially kill off a vital food source causing chain reactions down the food chain.

Let’s say I introduce some new fish to a lake, fish A,, these fish reproduce and grow much faster than the native fish, fish B, as a result they eat a lot of the food and most of fish B die out, the local predator fish, Fish C, expand in numbers due to the abundance of Fish A to eat.

Then Fish A start to die out as they’ve eaten to much of the food supply, this is sped up by Fish C who also eat the last of fish B.

Now we have a lack with no fish left.

That’s the danger of invasive species.

It’s not so much about the spread of certain species, it’s about the potential harm that they can cause to other wildlife. It’s more like how humans are typically prohibited from hunting endangered animals to protect their existence, not so much about them reproducing in certain areas. Invasive species can cause unexpected damage to other wildlife that previously did not have to experience it.

In nature, animals (not humans) have a limited range they can spread seeds to n their droppings and from fur. It generally will only spread a species within an area it is “ok” to exist as their are natural predators or other factors such as weather that will keep it in check.

Humans, on the other hand, have none of these limitations. A tropical plant can be brought to Alaska and a wild snake from Asia to Florida.

I will use the pythons as an example. Humans brought pythons to the US for “pets”. Once they were too big or there were reasons to not ditch them, irresponsible humans released them into the wild. The Florida Everglades is a great match to their habitat- but there are several things missing. There are no apex predators to the snakes. The only animals big enough and capable enough to eat them are humans, some gators, and the near extinct panthers. So the snakes reproduce at breakneck speed and eat everything that fits in their gullet. Small rodents, raccoons (nearly wiped out now), birds, deer, and even the apex predators once though able to keep the pythons in check.

Because they have no predators able to control the population, they are eating the available supply of food faster than it can reproduce. This steals food from other animals which also need to eat. So it is a twofold strain. No predators means more snakes, and more snakes means less food for every animal.

With plants, it works in the same way, except with plants, it is a “who can grow faster and choke out a native plant”. Dirt and square feet are food sources that are competed for. Wild Mustard is a horrid invasive species in my area. It is more resilient, faster growing, and it’s roots choke out those of other native plants. There are no animals (besides some livestock) that eat it naturally and no weed killer to selectively kill only wild mustard. The main way of killing it is by ripping it out manually, one plant at a time.

Once the balance of the food chain is disrupted, every living thing in it is affected.