DailyDirt: A Place For Everything, And Everything In Its Place?
from the urls-we-dig-up dept
It’s not easy to be an environmentalist. If you look into anything deeply enough, you’ll find complications that make it tough to paint in black and white without shades of gray. What disruptions of an ecosystem are good or bad? If you think that any disruption is bad, well, too late — people (and nature itself) have been mucking around with local ecosystems since life began. Biology is just a messy field. Invasive species are generally painted as harmful, but it’s not always the case.
- Goats on the Galapagos Islands were introduced in the 16th century, and the goat population grew to over 250,000 — eating just about anything they wanted, including endangered tortoises. The goats were killed off completely using Judas goats to help hunters find the last few goats in hiding. Radiolab has a fascinating podcast on the story of shooting every single goat (except for the Judas goats). [url]
- Not all invasive species are destructive, and people have been moving around plants and animals for centuries. Arguably, preventing invasive species is a futile task because ecosystems are meant to change and adapt — and species are going to go extinct. Globalization isn’t a recent phenomenon for biology. [url]
- If you’ve ever had a pet goldfish, maybe you’ve thought about setting it free in a local pond or lake — but you really shouldn’t do that. Canada is warning its citizens about enormous (former pet) goldfish that are crowding out native fish species and threatening the ecosystem, but hardy goldfish are also invading US fresh water, too. [url]
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Filed Under: biology, ecology, evolution, extinction, galapagos islands, goldfish, invasive species, judas goats, native species, project isabela
Comments on “DailyDirt: A Place For Everything, And Everything In Its Place?”
I welcome the judas humans who will help the superAI robots exterminate us. Head shots only please.
Forget gold fish
Canada only has about 21,929 oz of gold. http://www.cbc.ca/news/business/gold-canada-reserves-1.3443700
Watch out for the Royal Canadian Migrating Lobsters! http://www.cbc.ca/news/canada/nova-scotia/lobster-ban-europe-1.3497657
Goldfish
Our goldfish never lived long enough for the thought of setting them free to even occur to us. The most common cause of death was them jumping out of the tank. Yes, the tank had a top on it that was latched and we would even weight it down, but somehow they would manage to dislodge it and jump out.
Re: Goldfish
The solution is very simple – get a cat. The goldfish very quickly learn to stay exactly one cat leg length under the surface. 😉
Not Just Centuries, Millennia
There are no more wild citrus fruits.
Garlic cannot propagate without a human to dig it up and plant it again.
Wheat originated from a three-way hybrid between species of grass. Its big seeds are nutritious to humans, but are too big to spread on the wind the way the original species could. So it needs humans to spread it.
And now it turns out that grafting parts of different plants together—a very old agricultural technique—can cause genetic modification to take place!