Chronicling Sixth Great Extinction

Jan Libourel

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Not strictly an "extinction" topic, but since we talk about a lot of wildlife issues, I thought I would include this here:

The other day some imbecile jumped into the hippopotamus enclosure at the Los Angeles Zoo, slapped one of the hippos on the behind and made his escape! What a total idiot to attempt such a stunt! Hippos are deceptively fast, aggressive and can kill you in a few seconds with one mighty bite! A lucky fool that one was.
 

Pimpernel Smith

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Amazon deforestation up 108% in just one year.

http://imazon.org.br/publicacoes/boletim-do-desmatamento-da-amazonia-legal-junho-2018-sad/

With what's happening in the Arctic this summer McPherson could've been too optimistic, although he's now adjusted to just one year left for most humans. I feel like we have at least six years left just a gut feeling combined with extensive knowledge.
I thought that a lot of the Amazon basin is seasonally flooded so not much use to fell trees to create cattle space? But then again, for hard wood furniture.
 

Jan Libourel

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For all the talk of endangered species, it may be worth noting that a lot of exotics are thriving where they are non-natives. We all know about those dreadful pythons in Florida. Beavers were introduced into the southern tip of South America where they are thriving to the point of becoming pests. I recall they were doing much the same in our local San Bernardino mountains some years back, but I don't know the current situation. What brought this to mind was reading a piece online that nutria (an aquatic South American rodent akin to the porcupine) have established themselves in central California and appear to be multiplying rapidly. They are a major pest in the South, where they established themselves after escaping from fur farms. Tough animals: I shot one on a pond in Texas, and although I hit it perfectly with a heavy .38 Special load right behind the shoulder, it managed to swim away. We found it the next morning. It had made it up to the bank, where it had expired.

I was also recently reading about how some hippopotami from erstwhile drug lord Pablo Escobar's menagerie in Colombia had escaped and established themselves in the wild. Wouldn't it be something if they thrived and became a common animal in the riverine portions of South America?

As a matter of interest, early in the 20th century there was a movement to establish hippos in the swamplands of the Deep South. The idea was they could control the water hyacinth (another exotic) and provide large quantities of good meat. I am not sure they could have survived the occasional cold spells that hit that region, however.
 

Pimpernel Smith

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The danger there is mercury and the local populations are getting high doses in Brazil, Venezuela and likely elsewhere. I've travelled through the wild cat gold mining area of Venezuela in the late 1990s. Not sure what it would be like today, back then it was decent with lots of civilization to be found in small villages with outposts of liveable hotels and bars for a few a English pence. My ties with Venezuela continue and I've been asked to do some work again for them, but sadly, it doesn't look like they can zero the very small aged invoices they owe.
 

Jan Libourel

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An interesting matter is that some species are being "lost" through hybridization. I was recently reading how the rare Cuban crocodile and the Morelet's crocodile (found along the coast of eastern Mexico and Central America) are extensively hybridizing with American crocodiles. If these two species are lost through hybridization, there will be only two species of crocodile in the New Word: the American crocodile and the Orinoco crocodile, which is also very endangered.

American crocs are found fairly far northward in the Pacific, as far as the southern coast of Sonora. Perhaps with all this global warming they'll make their way up to Southern California. Now wouldn't that be something? However, I doubt very much that I shall live long enough to see it.
 

Jan Libourel

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^Fishing nets often wreak a lot of havoc on wildlife. For instance, the vaquita, a very small porpoise (in fact the smallest cetacean in the world) has been pushed to the brink of extinction because of being trapped in fishermen's nets.

On another note, I saw today in the paper that a bowhunter was killed by a black bear he had wounded. This was near Banning, California, in, I presume, the San Jacinto massif. Back in the '80s, when I used to sometimes hike there, there were no bears, but the black bears have been pushing relentlessly southward--across huge freeways and wide tracts of desert--to take over a lot of former grizzly habitat.
 

Jan Libourel

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^Difficult ethical point when animals should be harvested or culled. In general, I am always in favor of letting them breed and multiply until such time as they become pests or public menaces. I really don't like trapping, anyway.
 

Jan Libourel

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"87 elephants were killed for their horns. [sic]" Well that's a new one on me! Here I've lived halfway through my 77th year, and I never knew elephants had horns. I always thought they were killed for their teeth/tusks. I mean, I have teeth, but I don't have horns.
 

Jan Libourel

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^Yeah, conservation of beneficial insects is probably much more important to the planet than creatures like white rhinos. One of the wildlife organizations I support is the Xerces Society, a group dedicated to invertebrate conservation.
 

LelandJ

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Probably only some species of fungi and bacteria will survive this extinction since they'll have to be able to thrive in a highly radioactive environment. 440+ nuclear power plants will end in uncontrolled explosions and melt throughs once we're gone.
 

Jan Libourel

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^I kind of doubt this. Many animals adapt very well and thrive with human presence and alteration of the natural environment. I have cited in the past in this thread how many large animals have increased their numbers in my lifetime,

I'll give a personal example. When I grew up in Los Angeles, three or four miles west of downtown and a couple of miles south of the Hollywood Hills, the only wild mammals I would ever see were the Western gray squirrel and those rarely. Today, the Greater Los Angeles area is overrun with skunks, opossums and raccoons and teeming with (exotic) Eastern Fox Squirrels. We even have a mountain lion living in the Hollywood Hills and another (until recently) in the Verdugos. This would have been inconceivable when I was younger. In many parts of Europe I know that large mammals--deer, wild boar, even wolves--are multiplying rapidly. Another example: When I was a lad, some 60 years ago, the deer population of the USA was estimated at 16 million, as best as I recall. Today, I believe estimates run as high as 40 million. What more can I say?
 
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