"But humans didn't put it there - an aggressive fungal invasion did."
I disagree Charlie. It's highly likely that environmental damage from human created chemicals and toxins have caused susceptibility to this syndrome in frogs.
Frogs are kind of the "canary in the coal mine" of nature. Their skin is very permeable and almost sponge-like. They very readily absorb just about anything in the ecosystem and are usually one of the first species to show signs of distress due to environmental insults.
This is why it's very important to never pick up frogs you might find (however cute they are). They will absorb whatever is on your hands right through their skin.
"The recent surge in amphibian extinctions and the discovery of chytridiomycosis follows a recent and unprecedented increase in the human-derived movement of amphibians across the globe. Species are transported beyond their natural range to meet the needs of research laboratories, food supplies, captive collections and pest control. The three most commonly introduced species are the North American Bullfrog, Rana catesbiana, the African-clawed frog, Xenopus laevis and the Cane toad, Bufo marinus. All three species are known to be asymptomatic carriers of B. dendrobatidis-infection."
We took amphibians that have a defense against the infection and put them in contact with amphibians all over the world that were utterly vulnerable to it. #ecology
@twophrasebark: @gunnalastair: Yeah sorry about that... actually my original opening paragraph got tweaked before it went up, and I didn't mean to suggest that the fungal infestation was not humans' fault. I had a strong suspicion it would turn out to be our doing, one way or another.... #ecology
@Klebert L. Hall:
It all depends on what sort of future Earth you prefer. We have more say over it every day. As a consequence, one day we'll be living on exactly the Earth we deserve, whatever that may be. #ecology
Environmental preservation (while pleasant) is a hugely more "unnatural" process than extinction.
The set of species existing on Earth at any one time is no more perfect than the set of species existing in some other era. Trying to "freeze frame" the global environment is it's state as of some given baseline year is probably impossible, and sort of perverse.
-Kle. #ecology
@Klebert L. Hall:
I don't personally know of anyone advocating the arbitrary "freeze frame" of the global environment. I suppose they're out there, but usually this is just one of those well-worn environmental strawmen.
I merely advocate that given the vast array of services the natural world provides us with (billions if not trillions of dollars worth, for free), a gradual rate of global extinctions has perhaps more short-term utility to us than a rapid rate. Those who are "freeze framing" are only acting as a counterweight. It just makes good business sense not to imperil such a good deal so long as we still depend on it, and it's hard to determine exactly what will and won't imperil it so it's prudent to err on the side of caution.
And I frequently hear the argument that it's "natural" for human beings to drive other animals into extinction, yet it's "unnatural" for human beings to protect species (or networks of species) that provide us with a benefit, either directly or indirectly. The asymmetry always struck me as strange, especially since one would have to include something as fundamental as agriculture in the latter category. Perhaps that is unnatural; it still seems to be a good idea, regardless. #ecology
I read a couple fantasy novels set in the previous ice age a while back. It was interesting because the author had done his research and explained in his notes that ice age did not equate to global perma winter. There were lots of variances like Beringa. Alas, don't remember the name of the books, I never did get the third book in the trilogy either. #evolution
brentbent: C.O.C.K.R.O.A.C.H. )for all the queer super villians out there( was starred
brentbent: C.O.C.K.R.O.A.C.H. )for all the queer super villians out there( was unstarred
@brentbent: C.O.C.K.R.O.A.C.H. )for all the queer super villians out there(: Okay, I laughed. Cthulhu didn't leave though; he's hiding in the forests lying in wait for unsuspecting tourists. #evolution
Wait, so you're saying that during the ice age, Alaska and Russia were a couple, but post-melt they are taking time off from one another?
Alaska never told me. I mean, I'd ask about her previous relationships, but she'd quickly change the subject by dumping a snow storm on me, or a 2 week long -20 F cold snap. Should have known there was something she wasn't telling me, but I guess I didn't really want to know, ya know?
I suspect it was an experiment in alien terraforming... or xenoforming? They probably made the pyramids and dropped off dinosaur bones at the same time, just to mess with us.
i have read about these little bitty creatures and how they find stuff like them in caves where humans can never live.
i think in mexico or s.america there is a cave system that has sulfur dioxide and acidic water and can not support our life yet it has millions of these little bitty microbes eating away on acid water and smelly sulfur stuff. #science
11/04/09
11/04/09
11/04/09
I disagree Charlie. It's highly likely that environmental damage from human created chemicals and toxins have caused susceptibility to this syndrome in frogs.
Frogs are kind of the "canary in the coal mine" of nature. Their skin is very permeable and almost sponge-like. They very readily absorb just about anything in the ecosystem and are usually one of the first species to show signs of distress due to environmental insults.
This is why it's very important to never pick up frogs you might find (however cute they are). They will absorb whatever is on your hands right through their skin.
Just FYI...
11/04/09
11/04/09
Not only that, we're the reason chytrid is now everywhere.
[www.edgeofexistence.org]
"The recent surge in amphibian extinctions and the discovery of chytridiomycosis follows a recent and unprecedented increase in the human-derived movement of amphibians across the globe. Species are transported beyond their natural range to meet the needs of research laboratories, food supplies, captive collections and pest control. The three most commonly introduced species are the North American Bullfrog, Rana catesbiana, the African-clawed frog, Xenopus laevis and the Cane toad, Bufo marinus. All three species are known to be asymptomatic carriers of B. dendrobatidis-infection."
We took amphibians that have a defense against the infection and put them in contact with amphibians all over the world that were utterly vulnerable to it. #ecology
11/04/09
11/04/09
11/04/09
11/05/09
So what? It's still plain old natural selection whether the fungus was distributed by humans or birds.
Extinction and survival are what the environment are made of.
-Kle. #ecology
11/05/09
It all depends on what sort of future Earth you prefer. We have more say over it every day. As a consequence, one day we'll be living on exactly the Earth we deserve, whatever that may be. #ecology
11/06/09
"Deserve" is a rather silly term.
Environmental preservation (while pleasant) is a hugely more "unnatural" process than extinction.
The set of species existing on Earth at any one time is no more perfect than the set of species existing in some other era. Trying to "freeze frame" the global environment is it's state as of some given baseline year is probably impossible, and sort of perverse.
-Kle. #ecology
11/06/09
I don't personally know of anyone advocating the arbitrary "freeze frame" of the global environment. I suppose they're out there, but usually this is just one of those well-worn environmental strawmen.
I merely advocate that given the vast array of services the natural world provides us with (billions if not trillions of dollars worth, for free), a gradual rate of global extinctions has perhaps more short-term utility to us than a rapid rate. Those who are "freeze framing" are only acting as a counterweight. It just makes good business sense not to imperil such a good deal so long as we still depend on it, and it's hard to determine exactly what will and won't imperil it so it's prudent to err on the side of caution.
And I frequently hear the argument that it's "natural" for human beings to drive other animals into extinction, yet it's "unnatural" for human beings to protect species (or networks of species) that provide us with a benefit, either directly or indirectly. The asymmetry always struck me as strange, especially since one would have to include something as fundamental as agriculture in the latter category. Perhaps that is unnatural; it still seems to be a good idea, regardless. #ecology
12:32 PM
Sure.
Still no real reason to get all worked up about a frog.
-Kle. #ecology
11/04/09
11/04/09
tough actin tinactin #ecology
11/04/09
11/04/09
11/04/09
11/02/09
10/30/09
10/30/09
10/30/09
Alaska never told me. I mean, I'd ask about her previous relationships, but she'd quickly change the subject by dumping a snow storm on me, or a 2 week long -20 F cold snap. Should have known there was something she wasn't telling me, but I guess I didn't really want to know, ya know?
10/30/09
10/30/09
10/31/09
10/30/09
10/30/09
10/30/09
*ahem*
I love how one of the photo captions in the original article states:
Ice-rich loessal deposits, or "muck," in the Klondike goldfields.
Muck is, like, "goop" and "spew" and like, stuff.
10/30/09
10/22/09
"They remove sulfides from the water, fix carbon dioxide, and in turn produce nitrous oxide, a very potent greenhouse gas."
Which in turn helps produce more dead zones. Which produces more SUPO5.
Anyone see where this is going?
10/22/09
Republicans?
I kid. I kid. #science
10/22/09
i think in mexico or s.america there is a cave system that has sulfur dioxide and acidic water and can not support our life yet it has millions of these little bitty microbes eating away on acid water and smelly sulfur stuff. #science
10/22/09
#@! #science
10/22/09
I blame you for the consequences. #science
10/23/09