... the giraffes are happy |
Want an example?
The wildebeest population is booming! |
- Giraffes on the Serengeti are flourishing in greater numbers these days.
- That's because the acacia trees they feed on are spreading in greater numbers.
- That's because the fires that would normally consume the acacia seedlings have declined.
- That's because the grasslands that would burn have been kept short by grazing.
- That's because the wildebeest population has increased from 200k to 1.4m.
- That's because the rinderpest (cattle-plague) virus has been ended worldwide.
- That's because it was killing our cows, so we developed a vaccine and spent decades on eradication.
Human intervention. We were just tending to our cows; we didn't know the broader impact it would have.
Another example?
- Along the 1200 mile coastline for Africa's Gulf of Guinea, folks have a hard time getting enough to eat; a balanced diet is difficult, but it used to be easier.
- That's because there used to be plenty of fish in the coastal waters, and fishermen could do well close to home, but not now.
- That's because fish populations are down about 90% in recent decades, and fishermen now have to go far offshore to catch anything worth the effort involved.
- That's because of pollution from the Niger Delta oil fields and pipelines. Most of the fish worth eating are gone and the indigenous fisherman are going hungry along with their families.
- That's because the oil industry in Nigeria is corrupt enough and poorly managed enough to spill as much oil as the Exxon Valdez into the gulf. Every year. For fifty years.
- That's because folks care more about oil and money than about people starving to death, apparently. BP Shell and their customers and partners are doing that still today. Nuts.
- Illegal overfishing (IUU) by boats from China, Japan, and others is devastating as well. If both problems were resolved, recovery would still take a century or more. About 40% of the region's families depend on fishing for survival.
Annobón Island at the gulf's southern extreme |
Everything affects everything. In case there was any question.
And the glaciers are melting.
More science insights that will probably have worldwide impact are available in The Serengeti Rules: The Quest to Discover How Life Works and Why It Matters by Sean Carroll