Displaying items by tag: crayfish
Alabama is home to remarkably diverse ecosystems:
They face dire threats.
This story was originally published by The Revelator.
When longtime environmental journalist Ben Raines started writing a book about the biodiversity in Alabama, the state had 354 fish species known to science. When he finished writing 10 years later, that number had jumped to 450 thanks to a bounty of new discoveries. Crawfish species leaped from 84 to 97 during the same time.
It’s indicative of a larger trend: Alabama is one of the most biodiverse states in the country, but few people know it. And even scientists are still discovering the rich diversity of life that exists there, particularly in the Mobile River basin.
All this newly discovered biodiversity is also gravely at risk from centuries of exploitation, which is what prompted Raines to write his new book, “Saving America’s Amazon.”
The Revelator talked with Raines about why this region is so biodiverse, why it’s been overlooked, and what efforts are being made to protect it.
Question: What makes Alabama, and particularly the Mobile River system, so biodiverse?
Answer: The past kind of defines the present in Alabama.
During the ice ages, when much of the nation was frozen under these giant glaciers, Alabama wasn’t. The glaciers petered out by the time they hit Tennessee. It was much colder but things here didn’t die.
Everything that had evolved in Alabama over successive ice ages is still here. We have a salamander, the Red Hills salamander, that branched off from all other salamander trees 50 million years ago. So this is an ancient salamander, but it’s still here because it never died out.
The other thing you have here, in addition to not freezing, is that it’s really warm. Where I am in Mobile, we’re on the same latitude as Cairo. So the same sun that bakes the Sahara Desert is baking here.
But we also have the rainiest climate in the United States along Alabama’s coast. It actually rains about 70 inches a year here. By comparison, Seattle gets about 55 inches. It makes for a sort of greenhouse effect where we have this intense sun and then plenty of water. Alabama has more miles of rivers and streams than any other state.
Things just grow here.
The pitcher plant bogs of Alabama, for example, are literally among the most diverse places on the planet. In the 1960s a scientist went out and counted every species of flowering plant in an Alabama pitcher plant bog. He came up with 63. That was the highest total found on Earth in a square meter for a decade or more.
For a long time the Great Smoky Mountains National Park was thought to be the center of oak tree diversity in the world because they have about 15 species of oaks in the confines of the park. Well, two years ago scientists working in this area called the Red Hills along the Alabama River found 20 species of oak trees on a single hillside. It’s just staggering.
Why is Alabama’s rich biodiversity not well known or studied?
The state was never known for being a biodiverse place until the early 2000s, when NatureServe came out with this big survey of all the states. It surprised everyone because it showed Alabama leading in aquatic diversity in all the categories — more species of fish, turtles, salamanders, mussels, snails.
This blew everybody away because Alabama in everybody’s mind is the civil rights protests of the 1960s, the KKK, steel mills and cotton fields. But that’s not what’s in Alabama, that’s what we’ve done to Alabama since we’ve been here.
I think part of it also has to do with being a long way from Harvard and Yale and Stanford and the great research institutions that were sending biologists all over the world. Alabama just wasn’t really studied or explored.
Again and again, the story in Alabama is that nobody has ever looked.
That’s one of E.O. Wilson’s big messages about Alabama. He is our most famous living scientist, I would say, or certainly biologist. He grew up here, and now in his twilight years his big mission has become trying to save Alabama. And he describes it as less explored than Borneo and says we have no idea what miracle cures and things we may find in the Mobile River system, which is what I call “America’s Amazon.”