[MAIPC] MAIPC Digest, Vol 73, Issue 12

[Kathryn Lambert]

Dear Marc, I am seeing a lot of posts beginning with ‘Get over it’. It is in my analysis - part of a political campaign for current administrative policies. IMO, the truth or facts do not really matter to the writers and they really have no concern with the real issues- I would go ahead and have several people write responses that are factually based anyway - after awhile the sheer weight of the truth sinks in. 
> On Nov 27, 2017, at 4:16 PM, maipc-request at lists.maipc.org wrote:
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>   1. Re: Species die. Get over it with a few revisions (Marc Imlay)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Mon, 27 Nov 2017 07:44:13 -0500
> From: "Marc Imlay" <ialm at erols.com>
> To: "'Southern Maryland Executive Committee'"
> 	<MD-SMD-EXCOM at LISTS.SIERRACLUB.ORG>,  "'MD Chapter - Excom Extended
> 	List'" <MD-EXCOM-EXTENDED at LISTS.SIERRACLUB.ORG>,  "Sierra Club
> 	Maryland Chapter, Alien Invasive"
> 	<MD-CONS-INVASIVES at LISTS.SIERRACLUB.ORG>,  "'MD Cons Committee'"
> 	<MD-CONS-COMM at LISTS.SIERRACLUB.ORG>, "'Maryland Chapter Outings
> 	Committee'" <MD-OUTINGS-COMM at LISTS.SIERRACLUB.ORG>,  "'MNPS Board'"
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> 	<INVASIVES at LISTSERV.UMD.EDU>, <NativePlantseast at yahoogroups.com>,
> 	<aliens-l at list.auckland.ac.nz>
> Subject: Re: [MAIPC] Species die. Get over it with a few revisions
> Message-ID: <001901d3677d$6ded7d90$49c878b0$@erols.com>
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> 
> 
> In the Washington Post today in Outlook, Mr. only humans count, made many
> mistakes of course. I would like to start with his summary of mass
> extinctions  that "come every 50 million to 100 million years, and
> scientists agree that we are now in the middle of the sixth extinction, this
> one caused primarily by humans. the sixth extinction will be followed by a
> recovery, and later a seventh extinction, and so on." We should read the
> scientific literature on mass extinctions. The first mass extinction
> eliminated two thirds of the fundamental basic forms of life forever. Over
> all there is a threshold level of degree of damage from mass extinction so
> that for some there is recovery, although it takes millions of years, and
> above that threshold there is not recovery. Studies have shown that with our
> current conservation efforts we can keep the sixth extinction below that
> threshold, but only if we continue that effort. So set aside natural areas
> making sure that keystone species are kept there. For example, the keystone
> crayfish burrows in wetlands that freeze over, support about a dozen aquatic
> species about a foot or two below ground level because the temperature is
> about 50 degrees (symbiosis). When the endangered species Act of 1973 was
> passed studies showed that new species evolved at less than 1 percent of the
> rate they were becoming extinct, because of us. Responses to that Act has
> helped a lot.  Host specific, effective, biological controls of non-native
> species has helped a lot. Japanese Knotweed is no longer as bad a problem
> that it was in Great Britain as a result. Cheers 
> 
> Marc Imlay, PhD
> 
> MD Chapter, Sierra Club, Natural Places Working Group Chair 
> 
> 
> 
> 
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> End of MAIPC Digest, Vol 73, Issue 12
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